dionics, inc. phone: (516) 997 - 7474 65 rushmore street fax: (516) 997 - 7479 westbury, ny 11590 website: www.dionics - usa.com gas discharge display segment drivers di - 230a di - 240a general description: the dionics di - 230a / di - 240a series circuits are designed to drive gas discharge display devices from signals originating from mos or ttl circuitry. each output is a switched, programmable constant current sink with a v oltage compliance of 80 or 125 volts. these circuits provide for simple interfaces with displays such as the beckman, burroughs panaplex a , cherry or equivalents. features: high breakdown voltage: 80v or 125v. high input voltage capability: 40v ttl or mos compatible all output currents programmed with single resistor requires few additional components equivalent to dm - 8889, mc3491, itt - 505 dc restoring input diode package layout: 0.185 dionics inc. DI-230A 0.025 0.020 0.070 0.250 0.900 01/2002 17 out8 in3 5 4 in7 18 in6 2 in8 in5 1 14 out1 8 9 16 13 out6 out4 15 out2 in2 pin connections 3 in1 out7 gnd out3 in4 12 6 10 11 out5 7 prog output gnd prog input circuit schematic (each section)
absolute maximum rating (ta = 25 0 c) chara cteristic symbol notes limits units input voltage v in measured with respect to gnd terminal 40 v output current i o 5 ma output voltage di - 230 v o measured with respect to gnd terminal 80 v output voltage di - 240 v o measured with respect to gnd terminal 100 v power dissipation di - 230; di - 240 p d derate at 8 mw/ 0 c above 25 0 c ambient 800 mw storage temperature t s - 55 to +125 0 c operating temperature* t o 0 to +70 0 c electrical characteristics (ta = 25 0 c) parameter sym bol conditions min. typ. max. units output saturation voltage v o (sat) i o =1ma; v i =3.5v; r p =27k w ; v p =10v 5 v output leakage current i o (off) v o = rated voltage; v i = 0.4v; r p = 27k w ; v p = 10v 0.1 10 a output current match d i o / i o v o =60v; v i =3. 5v; r p =27k w ; v p =10v 5 10 % output current i o (on) v o =60v; v i =3.5v; r p =27k w ; v p =10v 0.85 1.00 1.15 ma input current i i v i = 7.0v 250 370 500 a typical application: sg 15 d1 3 11 sf 9 se 14 8 2 13 7 1 +200v sd 12 6 vss mos digital calculator or clock sc 11 5 1 sb 4 10 d8 -vdd 3 18 d7 17 -vdd d5 16 2 d4 9 15 8 d6 dionics inc. di-230 cathode driver 10 14 7 sa 18 d3 6 dionics inc. di-510b anode driver cherry part no. w08-002 17 -vdd d2 5 13 sh 16 4 12 output vp + input - prog simplified test circuit vo vi + vr - gnd iin rp iout + -
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