ZN428

THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS AUGUST 1994 DS3007-2.1 ZN428E8/ZN428J8/ZN428D 8-BIT LATCHED INPUT D-A CONVERTER The ZN428 is a monolithic 8-bit D-A converter with input latches to facilitate updating from a data bus. The latch is transparent when enable is LOW and the data is held when enable is taken HIGH. The ZN428 also contains a 2.5V reference the use of which is pin optional to retain flexibility. An external fixed or varying reference may therefore be substituted. BIT 7 BIT 8 NC ENABLE ANALOG OUTPUT V REF IN V REF OUT ANALOG GROUND 1 2 3 4 5 6 7 8 16 15 14 ZN428J8 13 ZN428E8 12 11 10 9 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 (MSB) +V CC (+5V) DIGITAL GROUND FEATURES s Contains DAC with Data Latch and On-Chip Reference s Guaranteed Monotonic over the Full Operating Temperature Range s Single +5V Supply s Microprocessor Compatible s TTL and 5V CMOS Compatible s 800ns Settling Time s Complementary to ZN427 A to D Series s Commercial or Military Temperature Range ORDERING INFORMATION Device Type ZN428D ZN428E8 ZN428J8 Operating temperature 0°C to +70°C 0°C to +70°C -55°C to +125°C Package MP16W DP16 DC16 DC16 DP16 BIT 7 BIT 8 NC ENABLE ANALOG OUTPUT V REF IN V REF OUT ANALOG GROUND 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 (MSB) +V CC (+5V) DIGITAL GROUND ZN428D MP16 WIDE BODY Fig.1 Pin connections (not to scale) - top view ZN428 ABSOLUTE MAXIMUM RATINGS Supply voltage VCC Max.voltage, ...