dionics, inc. phone: (516) 997 - 7474 65 rushmore street fax: (516) 997 - 7479 westbury, ny 11590 website: www.dionics - usa.com di - 300 di - 302 level - shifted gas discharg e display segment driver general description: the dionics di - 300 and di - 302 are 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 compl iance of up to 100v. this output level can absorb large fluctuation of supply voltage. the signal is boosted in level by up to 200v (di - 300) or 125v (di - 302). this eases interfacing between logic circuitry and display, thus reduces costs. features: mono lithic silicon dielectrically isolated integrated circuit programmable constant current output current output range: 0.1 - 2.5ma 200v (di - 300) or 125v (di - 302) operation plastic 18 - pin dip package level shifted for ease of use mos and ttl compatibility e ight - channel operation pin for pin replacement for sprague udn 7183a, udn 7184a or udn 7186a package layout: 0.100 0.900 0.185 dionics inc. di-302 0.020 0.025 0.070 0.250 08/2002 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) limits characteristic symbol notes di - 300 di - 302 units supply voltage v - measured with respect to terminal ?a? - 200 - 125 v input voltage v in measured with respect to other terminal 20 20 v input voltage v ia measured with respect to terminal ?a? 20 20 v output voltage v o measured with respect to v ? 100 100 v out put current i o 2.5 2.5 ma power dissipation p d above 25 0 c ambient, derate at 8 mw / 0 c 800 800 mw storage temp. t s - 55 to +125 - 55 to +125 0 c operating temp.* t o 0 to +70 0 to +70 0 c * ceramic ( - 20 0 c to +85 0 c) electrical characterist ics (ta = 25 0 c) di - 302 parameter symbol conditions min. typ. max. units output saturation voltage v o (sat) 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 di - 300 output saturation voltage v o (sat) i o = 1ma; v s = 100v - 15 - v output leakage current i o (off) v s = 200v; v o = 100v; v ia = 0v - 1 10 a output current match d i o / i o v s = 200v; v o = 60v; v ia = 2v - 10 20 % output current i o (on) v s = 200v; v o = 60v; v ia = 2v 0.5 0.85 2.5 ma simplified test circuit ii io + a + + vs v o via v -
di - 300 typical application 22 o6 i5 d10 d10 1 14 d8 dto vss 21 o5 i4 d11 13 display (4) beckman 333 d9 9 (11) 1n4001 (optional) d1 i3 4.7m 12 sdp keyboard 30 d2 i2 11 sg d11 (10) 1n4001 (optional) 3.9k 10 d1 sf dionics DI-300 20 10uf k3 11 d3 se sf 10 32 k2 o4 10-digit calculator western digital lc - 1692 b i1 18 d4 (4) 22k sd sdp 29 k1 o3 -150 v to -180v 35 19 d5 sc 9 28 k0 -14v 8 17 d6 d3 8 sg -14v 1,7 15 o2 d4 7 sb se 27 vgg 14 o1 d5 d7 6 sa -14v sd 26 13 a d6 5 18 sc 25 v - 12 i8 d7 4 17 10k sb - 30 v 24 o8 i7 -14v d8 3 16 display intensity sa -7v 23 o7 i6 d9 2 15 d2 mri vdd
di - 302 typical a pplication these diagrams depict typical methods for setting output (cathode) current levels. in some cases, resistor values should be varied to adjust output current to a proper level for the particular display device used ttl interface +5v (vcc) v di-302 +5v -100v a mos inter face di-302 -100v a -15v (vdd) v mos interface a di-302 -15v (vdd) -100v v 1 1 se 22 display intensity 21 3.9k -14 v dionics di-302 cathode driver 3 sd 1 20 0.01 4 sc d3 to setting circuit 19 5 sb d4 vdd 15 vss 7 sa 3 ct 7001 clock / calendar 16 spm 60 hz 10 d4 4 27 18 sg 9 d3 dionics di-502 anode driver burroughs cd-4073-gm sf -14 v 8 d2 -100 v 18 se 5 24 7 d1 17 sd 11 in3 6 16 sc 10 in2 150pf 5 +100 v 15 8 sb 9 in1 4 spm -14v 14 10 sa 8 d1 sg 13 11 17 23 d2 1.5k 3 27k 12 12 25 10 uf 2 11 14 sf 26 + 14
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