NTE1715 Integrated Circuit 8–Circuit Display Driver Description: The NTE1715 is an integrated circuit in an 18–Lead DIP type package designed for high–breakown fluorescent display tube drive. Features: D Built–In 8 Circuits D Output Incorporating Pull–Down Resistor for Direct Fluorescent Display Tube Drive D Direct Input for CMOS or TTL Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VEE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55V Supply Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –45mA Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mW Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –30° to +75°C Electrical Characteristics: (VEE = –50V, TA = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit High–Level Input Voltage VIH VO ≤ –45V –1.5 – – V Low–Level Input Voltage VIL VO ≥ –3V – – –4 V High–Level Input Current IIH VI = –1.5V –280 –70 – µA Low–Level Input Current IIL VI = –4V –1.2 –0.25 – mA VI = –7V –2.6 –0.6 – mA –1.5 – V High–Level Output Voltage VOH VI = –4V, IO = –40mA –3.0 Low–Level Output Voltage VOL VI = –1.5V, IO = 0mA – Supply Current –49.9 –45.0 V ICC(OFF) VI = –1.5V – – 1.3 mA ICC(ON) VI = –4V – – 12 mA Pin Connection Diagram Input 1 1 18 Output 1 Input 2 2 Input 3 3 17 Output 2 16 Output 3 Input 4 4 15 Output 4 Input 5 5 14 Output 5 Input 6 6 Input 7 7 13 Output 6 12 Output 7 Input 8 8 11 Output 8 VEE 9 10 GND 18 10 1 9 .870 (22.1) Max .250 (6.35) .150 (3.8) .100 (2.54) .800 (20.3) .125 (3.17) Min