etic reserves the right to make changes at any time to improve the design and to supply the best product. ?2000, rev a1 ic-haus gmbh tel +49-6135-9292-0 integrated circuits fax +49-6135-9292-192 am kuemmerling 18, d-55294 bodenheim http://www.ichaus.com page 1 of 3 features supply 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 may be driven directly by phototransistors tri-state outputs 80ma peak sink/source current outputs protected by thermal shut-down quad differential line driver with separate logic bias and driver bias supplies, and enable function ET7272 description these line drivers are pin compatible with 26ls31 in applications where pin 4 = 5v and pin 12 = gnd. internal clamp diodes allow trouble-free operation when driving cable lengths exceeding 100m. split supplies are provided to minimize standby power dissipation in high voltage applications. the logic should be powered from a regulated 5v supply at the vccbias pin. the output stages may then be powered by a separate supply at vccdrivers, up to 30v. output voltage swings of 0.3v to vcc-1.9v are typical. the outputs are protected against shorts to ground, shorts to vcc and to other outputs, by a two-fold scheme of current limiting and thermal shutdown. this assures highly reliable operation in harsh environments. heat-sinking may be accomplished at pin 8 which is directly connected to the asic substrate. applications optical encoders industrial controls absolute maximum ratings parameter symbol min. max. units ref. operating temperature range t a -55 115 c supply voltage range(both) v cc 4.5 30 v
etic reserves the right to make changes at any time to improve the design and to supply the best product. ?2000, rev a1 ic-haus gmbh tel +49-6135-9292-0 integrated circuits fax +49-6135-9292-192 am kuemmerling 18, d-55294 bodenheim http://www.ichaus.com page 2 of 3 electrical characteristics unless otherwise specified, t a = 25c and en- <0.8v. parameters symbol min. typ. max. units test conditions overtemp operate point (junction) 1 t jop 172 c overtemp release point (junction) 1 t jrp 136 c 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 2i 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 3i 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 4i 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
etic reserves the right to make changes at any time to improve the design and to supply the best product. ?2000, rev a1 ic-haus gmbh tel +49-6135-9292-0 integrated circuits fax +49-6135-9292-192 am kuemmerling 18, d-55294 bodenheim http://www.ichaus.com page 3 of 3 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 propagation delay, falling input 50% point to zero crossing of differential outputs t phl 450 630 ns output rise time t r 700 980 ns output fall time t f 700 980 ns notes: 1. this is not a test parameter, but for information only. 2. it may be necessary to clamp the outputs with schottky diodes when driving extemely long cables with high capacitance between outputs. these diodes should have a forward voltage of less than 0.4v, and be connected with cathode to the output and anode to ground. package suffix chip only -c 16 lead soic -sop
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