technical data iw4021b 8-bit shift register high-voltage silicon-gate cmos ordering information iw4021bn plastic IW4021BDW soic t a = -55 to 125 c for all packages the iw4021b is an edge-triggered 8-bit shift register (parallel-to- serial converter) with a synchronous serial data input (d s ), a clock input (cp), an asynchronous active high parallel load input (pl), eight asynchronous parallel data inputs (p 0 -p 7 ) and buffered parallel outputs from the last three stages (q 5 -q 7 ). information on the parallel data inputs (p0-p7) is asynchronously loaded into the register while the parallel load input (pl) is high, independent of the clock (cp) and serial data (d s ) inputs. data present in the register is stored on the high-to-low transition of the parallel load input (pl). when the parallel load input is low, data on the serial data input (d s ) is shifted into the first register position and all the data in the register is shifted one position to the right on the low-to-high transition of the clock input (cp). ? operating voltage range: 3.0 to 18 v pin assignment ? maximum input current of 1 a at 18 v over full package-temperature range; 100 na at 18 v and 25 c ? noise margin (over full p ackage temperature range): 1.0 v min @ 5.0 v supply 2.0 v min @ 10.0 v supply 2.5 v min @ 15.0 v supply logic diagram pin 16 =v cc pin 8 = gnd function table serial operation: q 5 t=n+6 t cp d s pl q 6 t=n+7 q 7 t=n+8 n 0 0 0 n+1 1 0 1 0 n+2 0 0 0 1 0 n+3 1 0 1 0 1 x 0 q 5 q 6 q 7 parallel operation: cp d s pl p 5 p 6 p 7 q 5 q 6 q 7 x x 1 d d d d d d x = don?t care d = 1 or 0 rev. 00
iw4021b rev. 00 maximum ratings * symbol parameter value unit v cc dc supply voltage (referenced to gnd) -0.5 to +20 v v in dc input voltage (referenced to gnd) -0.5 to v cc +0.5 v v out dc output voltage (referenced to gnd) -0.5 to v cc +0.5 v i in dc input current, per pin 10 ma p d power dissipation in still air, plastic dip+ soic package+ 750 500 mw p d power dissipation per output transistor 100 mw tstg storage temperature -65 to +150 c t l lead temperature, 1 mm from case for 10 seconds (plastic dip or soic package) 260 c * maximum ratings are those values beyond which damage to the device may occur. functional operation should be restricted to the reco mmended operating conditions. +derating - plastic dip: - 10 mw/ c from 65 to 125 c soic package: : - 7 mw/ c from 65 to 125 c recommended operating conditions symbol parameter min max unit v cc dc supply voltage (referenced to gnd) 3.0 18 v v in , v out dc input voltage, output voltage (referenced to gnd) 0 v cc v t a operating temperature, all package types -55 +125 c this device contains protection circuitry to guard agains t damage due to high static voltages or electric fields. however, precautions must be taken to avoid applications of any voltage highe r than maximum rated voltages to this high-impedance circuit. for proper operation, v in and v out should be constrained to the range gnd (v in or v out ) v cc . unused inputs must always be tied to an appropriate logic voltage level (e.g., either gnd or v cc ). unused outputs must be left open.
iw4021b rev. 00 dc electrical characteristics (voltages referenced to gnd) v cc guaranteed limit symbol parameter test conditions v -55 c 25 c 125 c unit v ih minimum high-level input voltage v out =0.5 v or v cc - 0.5 v v out =1.0 v or v cc - 1.0 v v out =1.5 v or v cc - 1.5 v 5.0 10 15 3.5 7 11 3.5 7 11 3.5 7 11 v v il maximum low -level input voltage v out =0.5 v or v cc - 0.5 v v out =1.0 v or v cc - 1.0 v v out =1.5 v or v cc - 1.5 v 5.0 10 15 1.5 3 4 1.5 3 4 1.5 3 4 v v oh minimum high-level output voltage v in =gnd or v cc 5.0 10 15 4.95 9.95 14.95 4.95 9.95 14.95 4.95 9.95 14.95 v v ol maximum low-level output voltage v in =gnd or v cc 5.0 10 15 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 v i in maximum input leakage current v in = gnd or v cc 18 0.1 0.1 1.0 a i cc maximum quiescent supply current (per package) v in = gnd or v cc 5.0 10 15 20 5.0 10 20 100 5.0 10 20 100 150 300 600 3000 a i ol minimum output low (sink) current v in = gnd or v cc v ol =0.4 v v ol =0.5 v v ol =1.5 v 5.0 10 15 0.64 1.6 4.2 0.51 1.3 3.4 0.36 0.9 2.4 ma i oh minimum output high (source) current v in = gnd or v cc v oh =2.5 v v oh =4.6 v v oh =9.5 v v oh =13.5 v 5.0 5.0 10 15 -2.0 -0.64 -1.6 -4.2 -1.6 -0.51 -1.3 -3.4 -1.15 -0.36 -0.9 -2.4 ma ac electrical characteristics (c l =50pf, r l =200 k , input t r =t f =20 ns) v cc guaranteed limit symbol parameter v -55 c 25 c 125 c unit f max maximum clock frequency 5.0 10 15 3.0 6.0 8.5 3.0 6.0 8.5 1.5 3.0 4.25 mhz t plh , t phl maximum propagation delay, cp to qn 5.0 10 15 320 160 120 320 160 120 640 320 240 ns t plh , t phl maximum propagation delay, pl to qn 5.0 10 15 320 160 120 320 160 120 640 320 240 ns t tlh , t thl maximum output transition time, any output 5.0 10 15 200 100 80 200 100 80 400 200 160 ns c in maximum input capacitance 5.0 7.5 pf
iw4021b timing requirements (c l =50pf, r l =200 k , input t r =t f =20 ns) v cc guaranteed limit symbol parameter unit v -55 c 25 c 125 c t w minimum pulse width cp 5.0 10 15 160 80 50 160 80 50 320 160 100 ns t w minimum pulse width pl 5.0 10 15 180 80 50 180 80 50 360 160 100 ns t su minimum setup time, d s tocp 5.0 10 15 120 80 60 120 80 60 240 160 120 ns t su minimum setup time, pn to pl 5.0 10 15 50 30 20 50 30 20 100 60 40 ns t h minimum hold time, d s tocp 5.0 10 15 0 0 0 0 0 0 0 0 0 ns t h minimum hold time, pn to pl 5.0 10 15 0 0 0 0 0 0 0 0 0 ns t rec minimum recovery time pl 5.0 10 15 280 140 100 280 140 100 560 240 200 ns t r , t f maximum input rise or fall time 5.0 10 15 15 15 15 15 15 15 15 15 15 s expanded logic diagram rev. 00
iw4021b n suffix plastic (ms - 001bb) l h m j a b f g d seating plane n k 0.25 (0.010) m t -t- c 1 16 8 9 dimensions, mm symbol min max a 18.67 19.69 b 6.10 7.11 c 5.33 d 0.36 0.56 f 1.14 1.78 g 2.54 h 7.62 j 0 10 k 2.92 3.81 rev. 00 l 7.62 8.26 notes: m 0.20 0.36 1. imensions ?a?, ?b? do not include mold flash or protrusions. maximum mold flash or protrusions 0.25 mm (0.010) per side. n 0.38 d suffix soic (ms - 012ac) a b h c k c m j f m p g d r x 45 seating plane 0.25 (0.010) m t -t- 1 16 8 9 dimensions, mm symbol . min max a 9.80 10.0 b 3.80 4.00 c 1.35 1.75 d 0.33 0.51 f 0.40 1.27 g 1.27 h 5.72 j 0 8 k 0.10 0.25 notes: m 0.19 0.25 1.dimensions a and b do not include mold flash or protrusion. p 5.80 6.20 2.maximum mold flash or protrusion 0.15 mm (0.006) per side for a, for b - 0.25 mm (0.010) per side. r 0.25 0.50
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