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1. general description the ntb0101a is a 1-bit, dual supply translat ing transceiver with auto direction sensing, that enables bidirectional voltage level translatio n. it consists of two 1-bit i/o ports (a and b), one output enable input (oe ) and two supply pins (v cc(a) and v cc(b) ). v cc(a) can be supplied at any voltage between 1.2 v and 3.6 v. v cc(b) can be supplied at any voltage between 1.65 v and 5.5 v. this flexibility allows translation between any of the low voltage nodes (1.2 v, 1.5 v, 1.8 v, 2.5 v, 3.3 v and 5.0 v). pins a and oe are referenced to v cc(a) and pin b is referenced to v cc(b) . a high level at pin oe causes the outputs to assume a high-im pedance off-state. this device is fully specified for partial power- down applications using i off . the i off circuitry disables the output, preventing damage of the device due to backflow current, when it is powered down. 2. features and benefits ? wide supply voltage range: ? v cc(a) : 1.2 v to 3.6 v and v cc(b) : 1.65 v to 5.5 v ? i off circuitry provides partial power-down mode operation ? inputs accept voltages up to 5.5 v ? esd protection: ? hbm jesd22-a114e class 2 exceeds 2500 v for port a ? hbm jesd22-a114e class 3b exceeds 15000 v for port b ? mm jesd22-a115-a exceeds 200 v ? cdm jesd22-c101e exceeds 1500 v ? latch-up performance exceeds 100 ma per jesd 78b class ii ? specified from ? 40 ? cto+85 ? c and ? 40 ? cto+125 ? c ntb0101a auto direction sens ing dual supply rev. 1 ? 14 july 2015 product data sheet
ntb0101a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights re served. product data sheet rev. 1 ? 14 july 2015 2 of 19 nxp semiconductors ntb0101a auto direction sensing dual supply 3. ordering information 4. marking [1] the pin 1 indicator is on the lower left corner of the device, below the marking code. 5. functional diagram 6. pinning information 6.1 pinning table 1. ordering information type number package name description version ntb0101agw sc-88 plastic surface -mounted package; 6 leads sot363 table 2. marking codes type number marking code [1] ntb0101agw tl fig 1. logic symbol aaa-017137 5 3 oe a 4 b v cc(a) v cc(b) fig 2. pin configuration sot363 aaa-017138 ntb0101a v cc(b) v cc(a) gnd a 1 2 3 6 oe b 5 4 ntb0101a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights re served. product data sheet rev. 1 ? 14 july 2015 3 of 19 nxp semiconductors ntb0101a auto direction sensing dual supply 6.2 pin description 7. functional description [1] h = high voltage level; l = low voltage level; x = don?t care; z = high-impedance off-state. [2] when either v cc(a) or v cc(b) is at gnd level, the device goes into power-down mode. 8. limiting values [1] if the input and output current ratings are observed, the mi nimum input and minimum output voltage ratings may be exceeded. [2] v cco is the supply voltage associated with the output. [3] v cco + 0.5 v should not exceed 6.5 v. [4] above 87.5 ? c, the value of p tot derates linearly with 4.0 mw/k. table 3. pin description symbol pin description v cc(a) 1 supply voltage a gnd 2 ground (0 v) a 3 data input or output (referenced to v cc(a) ) b 4 data input or output (referenced to v cc(b) ) oe 5 output enable input (active low; referenced to v cc(a) ) v cc(b) 6 supply voltage b table 4. function table [1] supply voltage input input/output v cc(a) v cc(b) oe a b 1.2 v to v cc(b) 1.65 v to 5.5 v h z z 1.2 v to v cc(b) 1.65 v to 5.5 v l input or output output or input gnd [2] gnd [2] xzz table 5. limiting values in accordance with the absolute maximum rating system (iec 60134). voltages are referenced to gnd (ground = 0 v). symbol parameter conditions min max unit v cc(a) supply voltage a ? 0.5 +6.5 v v cc(b) supply voltage b ? 0.5 +6.5 v v i input voltage [1] ? 0.5 +6.5 v v o output voltage active mode [1] [2] [3] ? 0.5 v cco +0.5 v power-down or 3-state mode [1] ? 0.5 +6.5 v i ik input clamping current v i <0v ? 50 - ma i ok output clamping current v o <0v ? 50 - ma i o output current v o =0vtov cco [2] - ? 50 ma i cc supply current i cc(a) or i cc(b) -1 0 0m a i gnd ground current ? 100 - ma t stg storage temperature ? 65 +150 ?c p tot total power dissipation t amb = ? 40 ? c to +125 ?c [4] -2 5 0m w ntb0101a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights re served. product data sheet rev. 1 ? 14 july 2015 4 of 19 nxp semiconductors ntb0101a auto direction sensing dual supply 9. recommended operating conditions [1] the a and b sides of an unused i/o pair must be held in the same state, both at v cci or gnd. [2] v cc(a) must be less than or equal to v cc(b) . 10. static characteristics [1] v cco is the supply voltage associated with the output. table 6. operating conditions [1] [2] symbol parameter conditions min max unit v cc(a) supply voltage a 1.2 3.6 v v cc(b) supply voltage b 1.65 5.5 v v i input voltage 0 5.5 v v o output voltage power-down or 3-state mode; v cc(a) = 1.2 v to 3.6 v; v cc(b) = 1.65 v to 5.5 v port a 0 3.6 v port b 0 5.5 v t amb ambient temperature ? 40 +125 ?c ? t/ ? v input transition rise and fall rate v cc(a) = 1.2 v to 3.6 v; v cc(b) = 1.65 v to 5.5 v - 40 ns/v table 7. typical static characteristics at recommended operating conditions; t amb = 25 ? c; voltages are referenced to gnd (ground = 0 v). symbol parameter conditions min typ max unit v oh high-level output voltage port a; v cc(a) = 1.2 v; i o = ? 20 ? a-1.1-v v ol low-level output voltage port a; v cc(a) = 1.2 v; i o = 20 ? a - 0.09 - v i i input leakage current oe input; v i = 0 v to 3.6 v; v cc(a) = 1.2 v to 3.6 v; v cc(b) =1.65vto5.5v -- ? 1 ? a i oz off-state output current port a or b; v o =0vtov cco ; v cc(a) = 1.2 v to 3.6 v; v cc(b) = 1.65 v to 5.5 v [1] -- ? 1 ? a i off power-off leakage current port a; v i or v o = 0 v to 3.6 v; v cc(a) =0v;v cc(b) =0vto5.5v -- ? 1 ? a port b; v i or v o = 0 v to 5.5 v; v cc(b) =0v;v cc(a) =0vto3.6v -- ? 1 ? a c i input capacitance oe input; v cc(a) = 1.2 v to 3.6 v; v cc(b) =1.65vto5.5v - 1.0 - pf c i/o input/output capacitance port a; v cc(a) = 1.2 v to 3.6 v; v cc(b) =1.65vto5.5v - 4.0 - pf port b; v cc(a) = 1.2 v to 3.6 v; v cc(b) =1.65vto5.5v - 7.5 - pf ntb0101a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights re served. product data sheet rev. 1 ? 14 july 2015 5 of 19 nxp semiconductors ntb0101a auto direction sensing dual supply table 8. typical supply current at recommended operating conditions; t amb = 25 ? c; voltages are referenced to gnd (ground = 0 v). v cc(a) v cc(b) unit 1.8 v 2.5 v 3.3 v 5.0 v i cc(a) i cc(b) i cc(a) i cc(b) i cc(a) i cc(b) i cc(a) i cc(b) 1.2 v101010101020101050na 1.5 v 10 10 10 10 10 10 10 650 na 1.8 v 10 10 10 10 10 10 10 350 na 2.5 v - - 10 10 10 10 10 40 na 3.3 v----10101010na table 9. static characteristics [1] at recommended operating conditions; volt ages are referenced to gnd (ground = 0 v). symbol parameter conditions t amb = ? 40 ? c to +85 ?c t amb = ? 40 ? c to +125 ?c unit min max min max v ih high-level input voltage port a or port b and oe input; v cc(a) = 1.2 v to 3.6 v; v cc(b) = 1.65 v to 5.5 v 0.65v cci - 0.65v cci -v v il low-level input voltage port a or port b and oe input; v cc(a) = 1.2 v to 3.6 v; v cc(b) = 1.65 v to 5.5 v -0.35v cci -0 . 3 5 v cci v v oh high-level output voltage i o = ? 20 ? a port a; v cc(a) = 1.4 v to 3.6 v v cco ? 0.4 - v cco ? 0.4 - v port b; v cc(b) = 1.65 v to 5.5 v v cco ? 0.4 - v cco ? 0.4 - v v ol low-level output voltage i o =20 ? a port a; v cc(a) = 1.4 v to 3.6 v - 0.4 - 0.4 v port b; v cc(b) = 1.65 v to 5.5 v - 0.4 - 0.4 v i i input leakage current oe input; v i = 0 v to 3.6 v; v cc(a) = 1.2 v to 3.6 v; v cc(b) =1.65vto5.5v - ? 2- ? 5 ? a i oz off-state output current port a or port b; v o =0vorv cco ; v cc(a) = 1.2 v to 3.6 v; v cc(b) = 1.65 v to 5.5 v - ? 2- ? 10 ? a i off power-off leakage current port a; v i or v o = 0 v to 3.6 v; v cc(a) =0v; v cc(b) =0vto5.5v - ? 2- ? 10 ? a port b; v i or v o = 0 v to 5.5 v; v cc(b) =0v; v cc(a) =0vto3.6v - ? 2- ? 10 ? a ntb0101a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights re served. product data sheet rev. 1 ? 14 july 2015 6 of 19 nxp semiconductors ntb0101a auto direction sensing dual supply [1] v cci is the supply voltage associated with the input and v cco is the supply voltage associated with the output. 11. dynamic characteristics i cc supply current v i = 0 v or v cci ; i o = 0 a i cc(a) oe = high; v cc(a) = 1.4 v to 3.6 v; v cc(b) = 1.65 v to 5.5 v -3- 15 ? a oe = low; v cc(a) = 1.4 v to 3.6 v; v cc(b) = 1.65 v to 5.5 v -3- 20 ? a v cc(a) = 3.6 v; v cc(b) =0v - 2 - 15 ? a v cc(a) = 0 v; v cc(b) =5.5v - ? 2- ? 15 ? a i cc(b) oe = high; v cc(a) = 1.4 v to 3.6 v; v cc(b) = 1.65 v to 5.5 v -5- 15 ? a oe = low; v cc(a) = 1.4 v to 3.6 v; v cc(b) = 1.65 v to 5.5 v -5- 20 ? a v cc(a) = 3.6 v; v cc(b) =0v - ? 2- ? 15 ? a v cc(a) = 0 v; v cc(b) =5.5v - 2 - 15 ? a i cc(a) + i cc(b) v cc(a) = 1.4 v to 3.6 v; v cc(b) = 1.65 v to 5.5 v -8- 40 ? a table 9. static characteristics [1] ?continued at recommended operating conditions; volt ages are referenced to gnd (ground = 0 v). symbol parameter conditions t amb = ? 40 ? c to +85 ?c t amb = ? 40 ? c to +125 ?c unit min max min max table 10. typical dynamic characteristics [1] voltages are referenced to gnd (ground = 0 v); typical values are measured with v cc(a) = 1.2 v and t amb = 25 ? c; for test circuit, see figure 5 ; for waveforms, see figure 3 and figure 4 . symbol parameter conditions v cc(b) unit 1.8 v 2.5 v 3.3 v 5.0 v t pd propagation delay a to b 5.9 4.8 4.4 4.2 ns b to a 5.6 4.8 4.5 4.4 ns t en enable time oe to a, b 0.5 0.5 0.5 0.5 ? s t dis disable time oe to a; no external load [2] 6.9 6.9 6.9 6.9 ns oe to b; no external load [2] 9.5 8.6 8.5 8.0 ns oe toa 81698368ns oe tob 81698368ns t t transition time port a 4.0 4.0 4.1 4.1 ns port b 2.6 2.0 1.7 1.4 ns t w pulse width data inputs 15 13 13 13 ns f data data rate 70 80 80 80 mbit/s ntb0101a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights re served. product data sheet rev. 1 ? 14 july 2015 7 of 19 nxp semiconductors ntb0101a auto direction sensing dual supply [1] t pd is the same as t plh and t phl . t en is the same as t pzl and t pzh . t dis is the same as t plz and t phz . t t is the same as t thl and t tlh . [2] delay between oe going high and when the outputs are disabled. table 11. dynamic characteristics for temperature range ? 40 ? c to +85 ?c [1] voltages are referenced to gnd (gr ound = 0 v); for test circuit, see figure 5 ; for waveforms, see figure 3 and figure 4 . symbol parameter conditions v cc(b) unit 1.8 v ? 0.15 v 2.5 v ? 0.2 v 3.3 v ? 0.3 v 5.0 v ? 0.5 v min max min max min max min max v cc(a) = 1.5 v ? 0.1 v t pd propagation delay a to b 1.4 12.9 1.2 10.1 1.1 10.0 0.8 9.9 ns b to a 0.9 14.2 0.7 12.0 0.4 11.7 0.3 13.7 ns t en enable time oe to a, b - 1.0 - 1.0 - 1.0 - 1.0 ? s t dis disable time oe to a; no external load [2] 1.0 11.9 1.0 11.9 1.0 11.9 1.0 11.9 ns oe to b; no external load [2] 1.0 16.9 1.0 15.2 1.0 14.1 1.0 13.8 ns oe to a - 320 - 260 - 260 - 280 ns oe to b - 200 - 200 - 200 - 200 ns t t transition time port a 0.9 5.1 0.9 5.1 0.9 5.1 0.9 5.1 ns port b 0.9 4.7 0.6 3.2 0.5 2.5 0.4 2.7 ns t w pulse width data inputs 25 - 25 - 25 - 25 - ns f data data rate - 40 - 40 - 40 - 40 mbit/s v cc(a) = 1.8 v ? 0.15 v t pd propagation delay a to b 1.6 11.0 1.4 7.7 1.3 6.8 1.2 6.5 ns b to a 1.5 12.0 1.3 8.4 1.0 7.6 0.9 7.1 ns t en enable time oe to a, b - 1.0 - 1.0 - 1.0 - 1.0 ? s t dis disable time oe to a; no external load [2] 1.0 11.0 1.0 11.0 1.0 11.0 1.0 11.0 ns oe to b; no external load [2] 1.0 15.4 1.0 13.5 1.0 12.4 1.0 12.1 ns oe to a - 260 - 230 - 230 - 230 ns oe to b - 200 - 200 - 200 - 200 ns t t transition time port a 0.8 4.1 0.8 4.1 0.8 4.1 0.8 4.1 ns port b 0.9 4.7 0.6 3.2 0.5 2.5 0.4 2.7 ns t w pulse width data inputs 20 - 17 - 17 - 17 - ns f data data rate - 49 - 60 - 60 - 60 mbit/s v cc(a) = 2.5 v ? 0.2 v t pd propagation delay a to b - - 1.1 6.3 1.0 5.2 0.9 4.7 ns b to a - - 1.2 6.6 1.1 5.1 0.9 4.4 ns t en enable time oe toa, b ---1.0-1.0-1.0 ? s ntb0101a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights re served. product data sheet rev. 1 ? 14 july 2015 8 of 19 nxp semiconductors ntb0101a auto direction sensing dual supply [1] t pd is the same as t plh and t phl . t en is the same as t pzl and t pzh . t dis is the same as t plz and t phz . t t is the same as t thl and t tlh . [2] delay between oe going high and when the outputs are disabled. t dis disable time oe to a; no external load [2] - - 1.09.21.09.21.09.2ns oe to b; no external load [2] - - 1.0 11.9 1.0 10.7 1.0 10.2 ns oe to a - - - 200 - 200 - 200 ns oe to b - - - 200 - 200 - 200 ns t t transition time port a - - 0.7 3.0 0.7 3.0 0.7 3.0 ns port b - - 0.7 3.2 0.5 2.5 0.4 2.7 ns t w pulse width data inputs - - 12 - 10 - 10 - ns f data data rate - - - 85 - 100 - 100 mbit/s v cc(a) = 3.3 v ? 0.3 v t pd propagation delay a to b - - - - 0.9 4.7 0.8 4.0 ns b to a - - - - 1.0 4.9 0.9 3.8 ns t en enable time oe toa, b -----1.0-1.0 ? s t dis disable time oe to a; no external load [2] - - - - 1.0 9.2 1.0 9.2 ns oe to b; no external load [2] - - - - 1.0 10.1 1.0 9.6 ns oe toa -----260-260ns oe tob -----200-200ns t t transition time port a - - - - 0.7 2.5 0.7 2.5 ns port b - - - - 0.5 2.5 0.4 2.7 ns t w pulse width data inputs - - - - 10 - 10 - ns f data data rate - - - - - 100 - 100 mbit/s table 11. dynamic characteristics for temperature range ? 40 ? c to +85 ?c [1] ?continued voltages are referenced to gnd (gr ound = 0 v); for test circuit, see figure 5 ; for waveforms, see figure 3 and figure 4 . symbol parameter conditions v cc(b) unit 1.8 v ? 0.15 v 2.5 v ? 0.2 v 3.3 v ? 0.3 v 5.0 v ? 0.5 v min max min max min max min max table 12. dynamic characteristics for temperature range ? 40 ? c to +125 ?c [1] voltages are referenced to gnd (gr ound = 0 v); for test circuit, see figure 5 ; for waveforms, see figure 3 and figure 4 . symbol parameter conditions v cc(b) unit 1.8 v ? 0.15 v 2.5 v ? 0.2 v 3.3 v ? 0.3 v 5.0 v ? 0.5 v min max min max min max min max v cc(a) = 1.5 v ? 0.1 v t pd propagation delay a to b 1.4 15.9 1.2 13.1 1.1 13.0 0.8 12.9 ns b to a 0.9 17.2 0.7 15.0 0.4 14.7 0.3 16.7 ns t en enable time oe to a, b - 1.0 - 1.0 - 1.0 - 1.0 ? s ntb0101a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights re served. product data sheet rev. 1 ? 14 july 2015 9 of 19 nxp semiconductors ntb0101a auto direction sensing dual supply t dis disable time oe to a; no external load [2] 1.0 12.5 1.0 12.5 1.0 12.5 1.0 12.5 ns oe to b; no external load [2] 1.0 18.1 1.0 16.2 1.0 14.9 1.0 14.6 ns oe to a - 340 - 280 - 280 - 300 ns oe to b - 220 - 220 - 220 - 220 ns t t transition time port a 0.9 7.1 0.9 7.1 0.9 7.1 0.9 7.1 ns port b 0.9 6.5 0.6 5.2 0.5 4.8 0.4 4.7 ns t w pulse width data inputs 25 - 25 - 25 - 25 - ns f data data rate - 40 - 40 - 40 - 40 mbit/s v cc(a) = 1.8 v ? 0.15 v t pd propagation delay a to b 1.6 14.0 1.4 10.7 1.3 9.8 1.2 9.5 ns b to a 1.5 15.0 1.3 11.4 1.0 10.6 0.9 10.1 ns t en enable time oe to a, b - 1.0 - 1.0 - 1.0 - 1.0 ? s t dis disable time oe to a; no external load [2] 1.0 11.5 1.0 11.5 1.0 11.5 1.0 11.5 ns oe to b; no external load [2] 1.0 16.5 1.0 14.5 1.0 13.3 1.0 12.7 ns oe to a - 280 - 250 - 250 - 250 ns oe to b - 220 - 220 - 220 - 220 ns t t transition time port a 0.8 6.2 0.8 6.1 0.8 6.1 0.8 6.1 ns port b 0.9 5.8 0.6 5.2 0.5 4.8 0.4 4.7 ns t w pulse width data inputs 22 - 19 - 19 - 19 - ns f data data rate - 45 - 55 - 55 - 55 mbit/s v cc(a) = 2.5 v ? 0.2 v t pd propagation delay a to b - - 1.1 9.3 1.0 8.2 0.9 7.7 ns b to a - - 1.2 9.6 1.1 8.1 0.9 7.4 ns t en enable time oe to a, b - - - 1.0 - 1.0 - 1.0 ? s t dis disable time oe to a; no external load [2] - - 1.0 9.6 1.0 9.6 1.0 9.6 ns oe to b; no external load [2] - - 1.0 12.6 1.0 11.4 1.0 10.8 ns oe to a - - - 220 - 220 - 220 ns oe to b - - - 220 - 220 - 220 ns t t transition time port a - - 0.7 5.0 0.7 5.0 0.7 5.0 ns port b - - 0.7 4.6 0.5 4.8 0.4 4.7 ns t w pulse width data inputs - - 14 - 13 - 10 - ns f data data rate - - - 75 - 80 - 100 mbit/s v cc(a) = 3.3 v ? 0.3 v t pd propagation delay a to b - - - - 0.9 7.7 0.8 7.0 ns b to a - - - - 1.0 7.9 0.9 6.8 ns t en enable time oe toa, b - - ---1.0-1.0 ? s table 12. dynamic characteristics for temperature range ? 40 ? c to +125 ?c [1] ?continued voltages are referenced to gnd (gr ound = 0 v); for test circuit, see figure 5 ; for waveforms, see figure 3 and figure 4 . symbol parameter conditions v cc(b) unit 1.8 v ? 0.15 v 2.5 v ? 0.2 v 3.3 v ? 0.3 v 5.0 v ? 0.5 v min max min max min max min max ntb0101a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights re served. product data sheet rev. 1 ? 14 july 2015 10 of 19 nxp semiconductors ntb0101a auto direction sensing dual supply [1] t pd is the same as t plh and t phl . t en is the same as t pzl and t pzh . t dis is the same as t plz and t phz . t t is the same as t thl and t tlh. [2] delay between oe going high and when the outputs are disabled. [1] c pd is used to determine the dynamic power dissipation (p d in ? w). p d =c pd ? v cc 2 ? f i ? n+ ? (c l ? v cc 2 ? f o ) where: f i = input frequency in mhz; f o = output frequency in mhz; c l = load capacitance in pf; v cc = supply voltage in v; n = number of inputs switching; ? (c l ? v cc 2 ? f o ) = sum of the outputs. [2] f i = 10 mhz; v i =gndtov cc ; t r = t f = 1 ns; c l = 0 pf; r l = ? ? . t dis disable time oe to a; no external load [2] - - - - 1.0 9.5 1.0 9.5 ns oe to b; no external load [2] - - - - 1.0 10.7 1.0 9.6 ns oe to a - - - - - 280 - 280 ns oe to b - - - - - 220 - 220 ns t t transition time port a - - - - 0.7 4.5 0.7 4.5 ns port b - - - - 0.5 4.1 0.4 4.7 ns t w pulse width data inputs - - - - 10 - 10 - ns f data data rate - - - - - 100 - 100 mbit/s table 12. dynamic characteristics for temperature range ? 40 ? c to +125 ?c [1] ?continued voltages are referenced to gnd (gr ound = 0 v); for test circuit, see figure 5 ; for waveforms, see figure 3 and figure 4 . symbol parameter conditions v cc(b) unit 1.8 v ? 0.15 v 2.5 v ? 0.2 v 3.3 v ? 0.3 v 5.0 v ? 0.5 v min max min max min max min max table 13. typical power dissipation capacitance table [1] [2] tested at t amb = 25 ? c; voltages are referenced to gnd (ground = 0 v). symbol parameter conditions v cc(a) unit 1.2 v 1.2 v 1.5 v 1.8 v 2.5 v 2.5 v 3.3 v v cc(b) 1.8 v 5.0 v 1.8 v 1.8 v 2.5 v 5.0 v 3.3 v to 5.0 v c pd power dissipation capacitance outputs enabled; oe = gnd port a: (direction a to b) 5555555 pf port a: (direction b to a) 8888888 pf port b: (direction a to b) 18 18 18 18 18 18 18 pf port b: (direction b to a) 13 16 12 12 12 12 13 pf outputs disabled; oe = v cc(a) port a: (direction a to b) 0.12 0.12 0.04 0.05 0.08 0.08 0.07 pf port a: (direction b to a) 0.01 0.01 0.01 0.01 0.01 0.01 0.01 pf port b: (direction a to b) 0.01 0.01 0.01 0.01 0.01 0.01 0.01 pf port b: (direction b to a) 0.07 0.09 0.07 0.07 0.05 0.09 0.09 pf ntb0101a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights re served. product data sheet rev. 1 ? 14 july 2015 11 of 19 nxp semiconductors ntb0101a auto direction sensing dual supply 12. waveforms measurement points are given in table 14 . v ol and v oh are typical output voltage levels that occur with the output load. fig 3. data input (a, b) to data output (b, a) propagation delay times 001aan315 a, b input b, a output t plh t phl gnd v i v oh v m v m v ol t thl 10 % 90 % t tlh measurement points are given in table 14 . v ol and v oh are typical output voltage levels that occur with the output load. fig 4. enable and disable times aaa-001619 gnd v cco v ol outputs enabled v i gnd v m t plz v x v y v oh output low-to-off off-to-low output high-to-off off-to-high oe input t phz outputs enabled outputs disabled v m t pzh v m t pzl table 14. measurement points [1] supply voltage input output v cco v m v m v x v y 1.2 v 0.5v cci 0.5v cco v ol + 0.1 v v oh ? 0.1 v 1.5 v ? 0.1 v 0.5v cci 0.5v cco v ol + 0.1 v v oh ? 0.1 v 1.8 v ? 0.15 v 0.5v cci 0.5v cco v ol + 0.15 v v oh ? 0.15 v 2.5 v ? 0.2 v 0.5v cci 0.5v cco v ol + 0.15 v v oh ? 0.15 v 3.3 v ? 0.3 v 0.5v cci 0.5v cco v ol + 0.3 v v oh ? 0.3 v 5.0 v ? 0.5 v 0.5v cci 0.5v cco v ol + 0.3 v v oh ? 0.3 v ntb0101a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights re served. product data sheet rev. 1 ? 14 july 2015 12 of 19 nxp semiconductors ntb0101a auto direction sensing dual supply [1] v cci is the supply voltage associated with the input and v cco is the supply voltage associated with the output. [1] v cci is the supply voltage associated with the input. [2] for measuring data rate, pulse width, propagat ion delay and output rise and fall measurements, r l = 1 m ? . for measuring enable and disable times, r l = 50 k ? . [3] v cco is the supply voltage associated with the output. 13. application information 13.1 applications voltage level-translation applications. the nt b0101a can be used to interface between devices or systems operating at different supply voltages. see figure 6 for a typical operating circuit using the ntb0101a. test data is given in table 15 . all input pulses are supplied by generators having the following characteristics: prr ? 10 mhz; z o = 50 ? ; dv/dt ? 1.0 v/ns. r l = load resistance. c l = load capacitance including jig and probe capacitance. v ext = external voltage for measuring switching times. fig 5. test circuit for measuring switching times v m v m t w t w 10 % 90 % 0 v v i v i negative pulse positive pulse 0 v v m v m 90 % 10 % t f t r t r t f 001aal920 v ext v cc v i v o dut c l r l r l g table 15. test data supply voltage input load v ext v cc(a) v cc(b) v i [1] ? t/ ? v c l r l [2] t plh , t phl t pzh , t phz t pzl , t plz [3] 1.2 v to 3.6 v 1.65 v to 5.5 v v cci ? 1.0ns/v 15pf 50k ? , 1 m ? open open 2v cco ntb0101a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights re served. product data sheet rev. 1 ? 14 july 2015 13 of 19 nxp semiconductors ntb0101a auto direction sensing dual supply 13.2 architecture the architecture of the ntb0101a is shown in figure 7 . the device does not require an extra input signal to control the direction of data flow from a to b or from b to a. in a static state, the output drivers of the ntb0101a ca n maintain a defined output level, but the output architecture is weak, so that they can be overdriven by an external driver when data on the bus starts flowing in the opposite direction. the output of one-shot circuits detect rising or falling edges on the ports a or b. during a rising edge, the one-shot circuits turn on the pmos transistors (t1, t3) for a short duration, accelerating the low-to-high transition. similarly, during a falling edge, the one-shot circuits turn on the nmos transistors (t2, t4) for a short duratio n, accelerating the high-to-low transition. during output transitions, the ty pical output impedance is 70 ? at v cco = 1.2 v to 1.8 v. it is 50 ? at v cco = 1.8 v to 3.3 v and 40 ? at v cco = 3.3 v to 5.0 v. fig 6. typical operating circuit aaa-017139 oe ntb0101a system gnd ) v cc(a) v cc(b) system controller data a data b 1.8 v 3.3 v 3.3 v 1.8 v 0.1 f 0.1 f fig 7. architecture of ntb0101a i/o cell 001aal921 one shot one shot one shot one shot b a v cc(b) v cc(a) 4 k ntb0101a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights re served. product data sheet rev. 1 ? 14 july 2015 14 of 19 nxp semiconductors ntb0101a auto direction sensing dual supply 13.3 input driver requirements for correct operation, the device that drives the data i/os of the ntb0101a must have a minimum drive capability of ? 2 ma. see figure 8 for a plot of typical input current versus input voltage. 13.4 power-up v cc(a) must never be higher than v cc(b) during operation. however during power-up, v cc(a) ? v cc(b) does not damage the de vice. either of the power supplies can be ramped up first and hence no special power-up sequencing is required. the ntb0101a includes circuitry that disables all output ports when either v cc(a) or v cc(b) is switched off. 13.5 enable and disable an output enable input (oe ) is used to disable the device. setting oe = high causes all i/os to assume the high-impedance off-state. the disable time (t dis with no external load) indicates the delay between when oe goes high and when outputs actually become disabled. the enable time (t en ) indicates the amount of time the user must allow for a one-shot circuitry to become operational after oe is taken low. to ensure a high-impedance off-state during power-up or power-down, pin oe should be tied to v cc(a) through a pull-up resistor. the minimum value of the resistor determines the current-sourcing capa bility of the driver. 13.6 pull-up or pull-down resistors on i/o lines as mentioned previously, the ntb0101a is desig ned with low static drive strength to drive capacitive loads of up to 70 pf. to avoid ou tput contention issues, all pull-up or pull-down resistors used, must be above 50 k ? . for this reason, ntb0101a is not recommended for use in open-drain driver applications such as 1-wire or i 2 c-bus. for these applications, the nts0101 level translator is recommended. v t : input threshold voltage of the ntb0101a (typically v cci / 2). v d : supply voltage of the external driver. fig 8. typical input current versus input voltage graph 001aal922 v t /4 k ?(v d ? v t )/4 k i i v i ntb0101a all information provided in this document is subject to legal disclaimers. ? nxp semiconductors n.v. 2015. all rights re served. product data sheet rev. 1 ? 14 july 2015 15 of 19 nxp semiconductors ntb0101a auto direction sensing dual supply 14. package outline fig 9. package outline sot363 (sc-88) 5 ( ) ( 5 ( 1 & |