slls108b ? d239, january 1977 ? revised february 1993 post office box 655303 ? dallas, texas 75265 post office box 1443 ? houston, texas 77001 copyright ? 1993, texas instruments incorporated 2?1 ? meets ibm 360/370 i/o specification ? input resistance . . . 7 k ? to 20 k ? ? output compatible with ttl ? schottky-clamped transistors ? operates from single 5-v supply ? high speed . . . low propagation delay ? ratio specification for propagation delay time, low-to-high/high-to-low ? seven channels in one 16-pin package ? standard v cc and ground positioning on sn75127 description the SN75125 and sn75127 are monolithic seven-channel line receivers designed to satisfy the requirements of the ibm system 360/370 input/output interface specifications. special low-power design and schottky-clamped transistors allow for low supply-current requirements while maintaining fast switching speeds and high-current ttl outputs. the SN75125 and sn75127 are characterized for operation from 0 c to 70 c. logic symbols ? 7a 6a 5a 4a 3a 2a 1a 7y 6y 5y 4y 3y 2y 1y 7 6 5 4 3 2 1 10 11 12 13 14 9 16 SN75125 sn75127 7a 6a 5a 4a 3a 2a 1a 7y 6y 5y 4y 3y 2y 1y 7 6 5 4 3 2 1 9 10 11 12 13 14 15 ? these symbols are in accordance with ansi/ieee std 91-1984 and iec publication 617-12. 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 1a 2a 3a 4a 5a 6a 7a gnd 1y v cc 3y 4y 5y 6y 7y 2y SN75125 ...d or n p ackage (top view) 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 1a 2a 3a 4a 5a 6a 7a gnd v cc 1y 2y 3y 4y 5y 6y 7y sn75127 ...d or n p ackage (top view) the SN75125 is not recommended for new design
slls108b ? d239, january 1977 ? revised february 1993 post office box 655303 ? dallas, texas 75265 post office box 1443 ? houston, texas 77001 2?2 schematic (each receiver) y output 150 ? nom common circuitry v cc a input nom 12 k ? gnd to other channels channels to other absolute maximum ratings over operating free-air temperature range (unless otherwise noted) supply voltage, v cc (see note 1) 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input voltage range: SN75125 ? 0.15 v to 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . sn75127 ? 2 v to 7 v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . continuous total power dissipation see dissipation rating table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . operating free-air temperature range 0 c to 70 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range ? 65 c to 150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . notes: 1. all voltage values are with respect to network ground terminal. dissipation rating table package t a 25 c power rating operating factor above t a = 25 c t a = 70 c power rating d 950 mw 7.6 mw/ c 608 mw n 1050 mw 9.2 mw/ c 736 mw
slls108b ? d239, january 1977 ? revised february 1993 post office box 655303 ? dallas, texas 75265 post office box 1443 ? houston, texas 77001 2?3 recommended operating conditions min nom max unit supply voltage, v cc 4.5 5 5.5 v high-level input voltage, v ih 1.7 v low-level input voltage, v il 0.7 v high-level output current, i oh ?0.4 ma low-level output current, i ol 16 ma operating free-air temperature, t a 0 70 c electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) parameter test conditions min typ ? max unit v oh high-level output voltage v cc = 4.5 v, v il = 0.7 v, i oh = ? 0.4 ma 2.4 3.1 v v ol low-level output voltage v cc = 4.5 v, v ih = 1.7 v, i ol = 16 ma 0.4 0.5 v i ih high-level input current v cc = 5.5 v, v i = 3.11 v 0.3 0.42 ma i il low-level input current v cc = 5.5 v, v i = 0.15 v 30 a i os short-circuit output current ? v cc = 5.5 v, v o = 0 ?18 ?60 ma r i input resistance v cc = 4.5 v, 0 v, or open, ? v i = 0.15 v to 4.15 v 7 20 k ? i cc supply current v cc = 5.5 v, i oh = ? 0.4 ma, all inputs at 0.7 v 15 25 ma i cc supply current v cc = 5.5 v, i ol = 16 ma, all inputs at 4 v 28 47 ma ? all typical values are at v cc = 5 v, t a = 25 c. ? not more than one output should be shorted at a time. switching characteristics, v cc = 5 v, t a = 25 c parameter test conditions min typ max unit t plh propagation delay time, low-to-high-level output 7 14 25 ns t phl propagation delay time, high-to-low-level output 10 18 30 ns t plh ratio of propagation delay times r l = 400 ? c l = 50 pf, see figure 1 0.5 0.8 1.3 t plh t phl ratio of propagation delay times r l = 400 ?, c l = 50 pf, see figure 1 0.5 0.8 1.3 t tlh transition time, low-to-high-level output 1 7 12 ns t thl transition time, high-to-low-level output 1 3 12 ns
slls108b ? d239, january 1977 ? revised february 1993 post office box 655303 ? dallas, texas 75265 post office box 1443 ? houston, texas 77001 2?4 parameter measurement information 10 ns 0.8 v 1.2 v v cc output r l = 400 ? (see note c) c l = 50 pf (see note b) test circuit pulse generator (see note a) input 10% 0.7 v 90% 10 ns 100 ns 90% 1.7 v 10% output t phl 2 v 1.5 v 0.8 v t thl t tlh 2 v t plh 3 v 0 v v oh v ol voltage waveforms notes: a. the pulse generator has the following characteristics: z o 50 ? , prr 5 mhz. b. c l includes probe and jig capacitance. c. all diodes are 1n3064 or equivalent. figure 1. tests circuit and voltage waveforms
slls108b ? d239, january 1977 ? revised february 1993 post office box 655303 ? dallas, texas 75265 post office box 1443 ? houston, texas 77001 2?5 typical characteristics 0.6 ???? ???? c no load 0 v i ? input voltage ? v 5 2 0 1 1 2 3 4 v cc = 5 v vo ? output voltage ? v voltage transfer characteristics voltage transfer characteristics v i ? input voltage ? v 5 0 1 2 3 4 vo ? output voltage ? v v o v o ???? ???? ???? ???? ???? ???? ???? ???? ???? c ???? ???? c ???? c 0.2 0.4 0.8 1.2 1.4 1.6 1.8 0.6 02 1 0.2 0.4 0.8 1.2 1.4 1.6 1.8 figure 2 figure 3 0 vol ? low-level output voltage ? v i o ? output current ? ma 0.6 20 0 5 10 15 0.1 0.2 0.3 0.4 0.5 ?????? ?????? ???? ???? ?????? ?????? c ????? ????? ????? ????? ???? ???? c figure 4 figure 5
slls108b ? d239, january 1977 ? revised february 1993 post office box 655303 ? dallas, texas 75265 post office box 1443 ? houston, texas 77001 2?6 typical characteristics v cc ? supply voltage ? v icc ? supply current ? ma 0 30 6 0 1 2 3 4 5 5 10 15 20 25 all seven channels no load t a = 25 c all inputs at 4 v at 0.7 v all inputs supply current vs supply voltage cc i figure 6
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