quad differential line driver separate logic bias and driver bias, with tri-state outputs ET7272B etic reserves the right to make changes at any time to improve the design and to supply the best product. east texas integrated circuits usa ? 1221 w. campbell road suite 115 ? richardson, texas 75080 ? tel (972) 234-5656 ? fax (972) 234-5657 visit our website at www.easttexasic.com features ? supply (bias) voltage range 3.5v to 30v ? operation to 800khz ? cmos and ttl compatible inputs ? separate logic bias and driver supply pins ? optional single supply operation for moderate power applications ? high impedance buffered inputs with hysteresis ? tri-state outputs ? 80ma peak sink/source current , or send us email at sales@easttexasic.com . page 1 of 6 description these line drivers are pin compatible with 26ls31 in app lications where pin 4 = 5v and pin 12 = gnd. internal clamp diodes allow trouble-free operation when driving c able lengths exceeding 100m. split supplies are provided to minimize standby power dissipation in high voltage app lications. the logic should be powered from a regulated 5v supply at the vccbias pin. the output stages may t hen be powered by a separate supply at vccdrivers, up to 30v. output voltage swings of 0.3v to vcc-1.9v are ty pical. the outputs are protected against shorts to ground, shorts to vcc and to other outputs, by a two-fold schem e of current limiting and thermal shutdown. this assures highly reliable operation in harsh environments. the outputs may be placed into a high impedance state by application of a logic high at the en- pin. for normal operation, this pin should be at logic low or grounded. applications: ? encoders ? industrial controls this part is available in 16l soic or 20l tssop (all pb-free) packages, or as die. package suffix (pb-free) die only -c ----------- 16 lead soic -sop -sop-lf 20 lead tssop -tss -tss-lf
electrical characteristics unless otherwise specified, t a = 25c and en- <0.8v. parameters symbol min. typ. max. units test conditions overtemp operate point (junction) t jop 172 c note 1 overtemp release point (junction) t jrp 136 c note 1 vcc bias voltage range vcc b 3.5 5 30 v vcc drivers voltage range vcc d 4.5 5 30 v supply current vcc b 1 (b ias ) icc b 1 11.9 16.0 ma vcc b and vcc d = 5v supply current vcc d 1 (d rivers ) i ccd 1 2.4 3.3 ma vcc b and vcc d = 5v supply current vcc b 2 icc b 2 2.5 3.4 ma vcc b and vcc d = 5v, en- > 2v supply current vcc d 2 i ccd 2 0.0 0.1 ma vcc b and vcc d = 5v, en- > 2v supply current vcc b 3 icc b 3 12.1 18.5 ma vcc b and vcc d = 30v supply current vcc d 3 i ccd 3 2.4 3.3 ma vcc b and vcc d = 30v supply current vcc b 4 icc b 4 2.6 3.5 ma vcc b and vcc d = 5v, en- > 2v supply current vcc d 4 i ccd 4 0.0 0.1 ma vcc b and vcc d = 5v, en- > 2v enable input threshold v the 0.8 1.5 2 v enable low level input current i ile -10 0 10 a v in = 0v, vcc b = 5v enable high level input current i ihe - 108 150 a v in = 5v, vcc b = 5v high impedance output leakage i oz -4.0 0.0 4.0 a vcc d =30v, en- > 2v, output at 15v input positive-going threshold v t + 1.05 1.25 1.45 v vcc b = 5v input negative-going threshold v t- 0.75 0.95 1.15 v vcc b = 5v input hysteresis v h - 0.3 - v vcc b = 5v low level input current i il -0.1 -4.0 a v in = 0v, vcc b = 5v high level input current i ih 0 4.0 a v in = 5v, vcc b = 5v low level output1 v ol 1 375 500 mv i ol = 20ma, vcc d = 5v low level output2 v ol 2 370 500 mv i ol = 20ma, vcc d =30v high level output1 v oh 1 2.4 2.8 v i oh = -20ma, vcc d = 5v high level output2 v oh 2 27.7 28.1 v i oh = -20ma, vcc d =30v notes: 1. this is not a test parameter, but for information only. etic reserves the right to make changes at any time to improve the design and to supply the best product. east texas integrated circuits usa ? 1221 w. campbell road suite 115 ? richardson, texas 75080 ? tel (972) 234-5656 ? fax (972) 234-5657 visit our website at www.easttexasic.com , or send us email at sales@easttexasic.com . page 2 of 6
etic reserves the right to make changes at any time to improve the design and to supply the best product. east texas integrated circuits usa ? 1221 w. campbell road suite 115 ? richardson, texas 75080 ? tel (972) 234-5656 ? fax (972) 234-5657 visit our website at www.easttexasic.com , or send us email at sales@easttexasic.com . page 3 of 6 ac switching characteristics values given at v cc b = 5v, v cc d = 24v, t a = 25c, c l = 1000pf on all outputs, and en- <0.8v. parameters symbol min. typ. max. units test conditions propagation delay, rising input 50% point to zero crossing of differential outputs t plh 450 630 ns see above. propagation delay, falling input 50% point to zero crossing of differential outputs t phl 450 630 ns see above. output rise time t r 700 980 ns see above. output fall time t f 700 980 ns see above. absolute maximum ratings parameter symbol min. max. units ref. operating temperature range t a -55 115 c note 1. supply (driver) voltage range v ccd 4.5 30 v
ET7272B-c size = 2261 x 3150 (.089? x .124?) thickness = 305 (.012?) (pad coordinates below in microns) 925, 2371 vcc d rivers 251, 1855 ain 0, 1887 a + out 0, 1345 a - out 0, 943 vcc b ias 0, 542 b - out 0, 0 b + out 251, 32 bin 916, -214 gnd 1581, 32 cin 1832, 0 c+ out 1832, 542 c- out 1832, 958 en- 1832, 1345 d- out 1832, 1887 d+ out 1581, 1855 din etic reserves the right to make changes at any time to improve the design and to supply the best product. east texas integrated circuits usa ? 1221 w. campbell road suite 115 ? richardson, texas 75080 ? tel (972) 234-5656 ? fax (972) 234-5657 visit our website at www.easttexasic.com , or send us email at sales@easttexasic.com . page 4 of 6
ET7272B-sop package drawing for 16l soic a in a + a - v cc bi as b- b+ bin g nd c in c + c - en- d- d+ din v cc driv e r s etic reserves the right to make changes at any time to improve the design and to supply the best product. east texas integrated circuits usa ? 1221 w. campbell road suite 115 ? richardson, texas 75080 ? tel (972) 234-5656 ? fax (972) 234-5657 visit our website at www.easttexasic.com , or send us email at sales@easttexasic.com . page 5 of 6
ET7272B-tss package drawing for 20l tssop a in gnd a + a - vcc b ias b - b + nc b in nc vcc driver d in nc d + d - en - c - c + gnd c in etic reserves the right to make changes at any time to improve the design and to supply the best product. east texas integrated circuits usa ? 1221 w. campbell road suite 115 ? richardson, texas 75080 ? tel (972) 234-5656 ? fax (972) 234-5657 visit our website at www.easttexasic.com , or send us email at sales@easttexasic.com . page 6 of 6
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