sn54abtr2245, SN74ABTR2245 octal transceivers and line/memory drivers with 3-state outputs scbs680a march 1997 revised may 1997 1 post office box 655303 ? dallas, texas 75265 outputs have equivalent 25- w series resistors, so no external resistors are required state-of-the-art epic- ii b ? bicmos design significantly reduces power dissipation high-impedance state during power up and power down latch-up performance exceeds 500 ma per jedec standard jesd-17 esd protection exceeds 2000 v per mil-std-833, method 3015; exceeds 200 v using machine model (c = 200 pf, r = 0) typical v olp (output ground bounce) < 1 v at v cc = 5 v, t a = 25 c package options include plastic small-outline (dw), shrink small-outline (db), thin shrink small-outline (pw), and thin very small-outline (dgv) packages, ceramic chip carriers (fk), and plastic (n) and ceramic (j) dips description these octal transceivers and line drivers are designed for asynchronous communication between data buses. the devices transmit data from the a bus to the b bus or from the b bus to the a bus, depending on the logic level at the direction-control (dir) input. the output-enable (oe ) input can be used to disable the device so the buses are effectively isolated. both the a-port and b-port outputs, which are designed to sink up to 12 ma, include equivalent 25- w series resistors to reduce overshoot and undershoot. when v cc is between 0 and 2.1 v, the device is in the high-impedance state during power up or power down. however, to ensure the high-impedance state above 2.1 v, oe should be tied to v cc through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. the sn54abtr2245 is characterized for operation over the full military temperature range of 55 c to 125 c. the SN74ABTR2245 is characterized for operation from 40 c to 85 c. function table inputs operation oe dir operation l l b data to a bus l h a data to b bus h x isolation sn54abtr2245 ...j p ackage SN74ABTR2245 . . . db, dgv, dw, n, or pw package (top view) 3212019 9 10 11 12 13 4 5 6 7 8 18 17 16 15 14 b1 b2 b3 b4 b5 a3 a4 a5 a6 a7 a2 a1 dir b7 b6 oe a8 gnd b8 v cc sn54abtr2245 . . . fk package (top view) 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 dir a1 a2 a3 a4 a5 a6 a7 a8 gnd v cc oe b1 b2 b3 b4 b5 b6 b7 b8 epic- ii b is a trademark of texas instruments incorporated. copyright ? 1997, texas instruments incorporated unless otherwise noted this document contains production data information current as of publication date. products conform to specifications per the terms of texas instruments standard warranty. production processing does not necessarily include testing of all parameters. please be aware that an important notice concerning availability, standard warranty, and use in critical applications of texas instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
sn54abtr2245, SN74ABTR2245 octal transceivers and line/memory drivers with 3-state outputs scbs680a march 1997 revised may 1997 2 post office box 655303 ? dallas, texas 75265 logic symbol 2 2 this symbol is in accordance with ansi/ieee std 91-1984 and iec publication 617-12. b2 17 b3 16 b4 15 a5 6 a6 7 a7 8 a8 9 a2 3 a3 4 a4 5 oe a1 2 g3 19 3 en2 [ab] b5 14 b6 13 b7 12 b8 11 b1 18 3 en1 [ba] 1 dir 1 2 logic diagram (positive logic) dir oe a1 b1 to seven other channels 1 2 19 18
sn54abtr2245, SN74ABTR2245 octal transceivers and line/memory drivers with 3-state outputs scbs680a march 1997 revised may 1997 3 post office box 655303 ? dallas, texas 75265 output schematic output v cc gnd 25 w all resistor values shown are nominal. absolute maximum ratings over operating free-air temperature range (unless otherwise noted) 2 supply voltage range, v cc 0.5 v to 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input voltage range, v i (except i/o ports) (see note 1) 0.5 v to 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . voltage range applied to any output in the high or power-off state, v o 0.5 v to 5.5 v . . . . . . . . . . . . . . . . . . . current into any output in the low state, i o 30 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input clamp current, i ik (v i < 0) 18 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . output clamp current, i ok (v o < 0) 50 ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . package thermal impedance, q ja (see note 2): db package 115 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . dgv package 146 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . dw package 97 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . n package 67 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pw package 128 c/w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg 65 c to 150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 stresses beyond those listed under aabsolute maximum ratingso may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated under arecommended operating conditi onso is not implied. exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. notes: 1. the input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observe d. 2. the package thermal impedance is calculated in accordance with eia/jedec std jesd51, except for through-hole packages, which use a trace length of zero.
sn54abtr2245, SN74ABTR2245 octal transceivers and line/memory drivers with 3-state outputs scbs680a march 1997 revised may 1997 4 post office box 655303 ? dallas, texas 75265 recommended operating conditions (see note 3) sn54abtr2245 SN74ABTR2245 unit min max min max unit v cc supply voltage 4.5 5.5 4.5 5.5 v v ih high-level input voltage 2 2 v v il low-level input voltage 0.8 0.8 v v i input voltage 0 v cc 0 v cc v i oh high-level output current 12 12 ma i ol low-level output current 12 12 ma d t/ d v input transition rise or fall rate outputs enabled 5 5 ns/v d t/ d v cc power-up ramp rate 200 200 m s/v t a operating free-air temperature 55 125 40 85 c note 3: unused pins (input or i/o) must be held high or low to prevent them from floating. product preview information concerns products in the formative or design phase of development. characteristic data and other specifications are design goals. texas instruments reserves the right to change or discontinue these products without notice.
sn54abtr2245, SN74ABTR2245 octal transceivers and line/memory drivers with 3-state outputs scbs680a march 1997 revised may 1997 5 post office box 655303 ? dallas, texas 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) parameter test conditions t a = 25 c sn54abtr2245 SN74ABTR2245 unit parameter test conditions min typ 2 max min max min max unit v ik v cc = 4.5 v, i i = 18 ma 1.2 1.2 1.2 v v cc = 4.5 v, i oh = 1 ma 3.35 3.3 3.35 v oh v cc = 5 v, i oh = 1 ma 3.85 3.8 3.85 v v oh v cc =45v i oh = 3 ma 3 3.1 v v cc = 4 . 5 v i oh = 12 ma 2.6 2.6 v ol v cc =45v i ol = 8 ma 0.65 0.8 0.65 v v ol v cc = 4 . 5 v i ol = 12 ma 0.8 0.8 v v hys 100 mv i i control inputs v cc = 0 to 5.5 v, v i = v cc or gnd 1 1 1 m a i i a or b ports v cc = 2.1 v to 5.5 v, v i = v cc or gnd 20 20 20 m a i ozh 3 v cc = 2.1 v to 5.5 v, v o = 2.7 v, oe 2 v 10 10 10 m a i ozl 3 v cc = 2.1 v to 5.5 v, v o = 0.5 v, oe 2 v 10 10 10 m a i ozpu v cc = 0 to 2.1 v, v o = 0.5 v to 2.7 v, oe = x 50 50 50 m a i ozpd v cc = 2.1 v to 0, v o = 0.5 v to 2.7 v, oe = x 50 50 50 m a i off v cc = 0, v i or v o 4.5 v 100 100 m a i cex v cc = 5.5 v, v o = 5.5 v outputs high 50 50 50 m a i o ? v cc = 5.5 v, v o = 2.5 v 25 100 25 100 25 100 ma v cc = 5.5 v, outputs high 1 250 250 250 m a i cc a or b ports v cc = 5 . 5 v , i o = 0, outputs low 24 32 32 32 ma v i = v cc or gnd outputs disabled 0.5 250 250 250 m a data in p uts v cc = 5.5 v, one input at 3.4 v, outputs enabled 1.5 1.5 1.5 d i cc # data inp u ts , other inputs at v cc or gnd outputs disabled 0.05 0.05 0.05 ma control inputs v cc = 5.5 v, one input at 3.4 v, other inputs at v cc or gnd 1.5 1.5 1.5 c i v i = 2.5 v or 0.5 v 3 pf c io v o = 2.5 v or 0.5 v 6 pf * on products compliant to mil-prf38535, this parameter does not apply. 2 all typical values are at v cc = 5 v. 3 the parameters i ozh and i ozl include the input leakage current. this parameter is characterized but not production tested. ? not more than one output should be tested at a time, and the duration of the test should not exceed one second. # this is the increase in supply current for each input that is at the specified ttl voltage level rather than v cc or gnd. product preview information concerns products in the formative or design phase of development. characteristic data and other specifications are design goals. texas instruments reserves the right to change or discontinue these products without notice.
sn54abtr2245, SN74ABTR2245 octal transceivers and line/memory drivers with 3-state outputs scbs680a march 1997 revised may 1997 6 post office box 655303 ? dallas, texas 75265 switching characteristics over recommended ranges of supply voltage and operating free-air temperature, c l = 50 pf (unless otherwise noted) (see figure 1) parameter from (input) to (output) v cc = 5 v, t a = 25 c sn54abtr2245 SN74ABTR2245 unit (input) (output) min typ max min max min max t plh aorb bora 1 2.5 3.4 1 4 1 3.8 ns t phl a or b b or a 1 3.2 4.2 1 4.6 1 4.5 ns t pzh oe aorb 1.5 3.6 4.9 1.5 6.3 1.5 6.1 ns t pzl oe a or b 1.5 3.9 5.3 1.5 6.6 1.5 6.3 ns t phz oe aorb 1.5 3.6 4.7 1.5 5.5 1.5 5.3 ns t plz oe a or b 1.5 3.3 4.4 1.5 4.9 1.5 4.8 ns product preview information concerns products in the formative or design phase of development. characteristic data and other specifications are design goals. texas instruments reserves the right to change or discontinue these products without notice.
sn54abtr2245, SN74ABTR2245 octal transceivers and line/memory drivers with 3-state outputs scbs680a march 1997 revised may 1997 7 post office box 655303 ? dallas, texas 75265 parameter measurement information 1.5 v t h t su from output under test c l = 50 pf (see note a) load circuit s1 7 v open gnd 500 w 500 w data input timing input 1.5 v 3 v 0 v 1.5 v 1.5 v 3 v 0 v 3 v 0 v 1.5 v 1.5 v t w input voltage waveforms setup and hold times voltage waveforms propagation delay times inverting and noninverting outputs voltage waveforms pulse duration t plh t phl t phl t plh v oh v oh v ol v ol 1.5 v 1.5 v 3 v 0 v 1.5 v 1.5 v input 1.5 v output control output waveform 1 s1 at 7 v (see note b) output waveform 2 s1 at open (see note b) v ol v oh t pzl t pzh t plz t phz 1.5 v 1.5 v 3.5 v 0 v 1.5 v v ol + 0.3 v 1.5 v v oh 0.3 v 0 v 3 v voltage waveforms enable and disable times low- and high-level enabling output output t plh /t phl t plz /t pzl t phz /t pzh open 7 v open test s1 notes: a. c l includes probe and jig capacitance. b. waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. c. all input pulses are supplied by generators having the following characteristics: prr 10 mhz, z o = 50 w , t r 2.5 ns, t f 2.5 ns. d. the outputs are measured one at a time with one transition per measurement. figure 1. load circuit and voltage waveforms
tape and reel information *all dimensions are nominal device package type package drawing pins spq reel diameter (mm) reel width w1 (mm) a0 (mm) b0 (mm) k0 (mm) p1 (mm) w (mm) pin1 quadrant SN74ABTR2245dwr soic dw 20 2000 330.0 24.4 10.8 13.3 2.7 12.0 24.0 q1 SN74ABTR2245pwr tssop pw 20 2000 330.0 16.4 6.95 7.1 1.6 8.0 16.0 q1 package materials information www.ti.com 12-aug-2013 pack materials-page 1
*all dimensions are nominal device package type package drawing pins spq length (mm) width (mm) height (mm) SN74ABTR2245dwr soic dw 20 2000 367.0 367.0 45.0 SN74ABTR2245pwr tssop pw 20 2000 367.0 367.0 38.0 package materials information www.ti.com 12-aug-2013 pack materials-page 2
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