dionics, inc. phone: (516) 997 - 7474 65 rushmore street fax: (516) 997 - 7479 westbury, ny 11590 website: www.dionics - usa.com di - 302 level - shifted gas discharge display se gment driver general description: the dionics di - 302 is designed to drive gas discharge digital display devices from signals developed in mos or ttl circuitry. each output constitutes a switched constant current sink with a compliance of up to 100v. thi s output level can absorb large fluctuation of supply voltage. the signal is boosted in level by up to 125v. this eases interfacing between logic circuitry and display, thus reduces costs. features: monolithic silicon dielectrically isolated integrated circuit programmable constant current output current output range: 0.1 - 2.5ma 125 volt operation plastic 18 - pin dip package level shifted for ease of use mos and ttl compatibility eight - channel operation pin for pin replacement for sprague udn 7183a, udn 7184a or udn 7186a package layout: dionics inc. DI-302 0.020 0.070 0.185 0.250 0.025 0.900 01/2002 circuit schematic (each section) v - a output input 13 out7 in6 9 8 18 in1 out4 11 in2 12 in4 1 3 7 5 in7 out8 16 in8 4 pin connections a out6 2 10 out2 14 15 in5 6 in3 v - out5 out1 17 out3
absolute maximum rating (ta = 25 0 c) characteristic symbol notes limits units supply voltage v - measured with respect to terminal ?a? - 125 v input voltage v in meas ured with respect to other terminal 20 v input voltage v ia measured with respect to terminal ?a? 20 v output voltage v o measured with respect to v - 100 v output current i o 2.5 ma power dissipation p d derate at 8 mw/ 0 c above 25 0 c ambient 8 00 mw storage temperature t s - 55 to +125 0 c operating temperature* t o 0 to +70 0 c * ceramic ( - 20 0 c to +85 0 c) electrical characteristics (ta = 25 0 c) parameter symbol conditions min. typ. max. units output saturation voltage v o (s at) i o = 1ma; v s = 100v 15 v output leakage current i o (off) v s = 125v; v o = 100v; v ia = 0v 1 10 a output current match d i o / i o v s = 100v; v o = 60v; v ia = 1.2v 10 20 % output current i o (on) v s = 100v; v o = 60v; v ia = 1.2v 0.5 0.85 1.2 ma typical application: + simplified test circuit + vs v - v o via a ii io + +5v -100v a ttl interface +5v (vcc) v DI-302 1 d2 1 se 20 vss d3 to setting circuit 3 sd 19 1 d4 vdd 4 sc 15 3.9k 3 ct 7001 clock / calendar 11 5 sb 16 spm dionics DI-302 cathode driver 4 27 0.01 10 7 sa sg 5 24 d4 sf -14 v -100 v d3 se 9 dionics di-502 anode driver d2 sd 11 in3 8 18 150pf d1 sc 10 in2 7 17 +100 v 18 sb 9 in1 60 hz 6 16 + burroughs cd-4073-gm sa 8 d1 -14v 5 15 8 1.5k spm 17 23 27k 4 14 10 10 uf sg 14 25 13 11 3 26 12 12 display intensity 2 22 14 sf 21 -14 v -15v (vdd) v -100v DI-302 a a mos interfaces - 15v (vdd) v di - 302 - 100v
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