7442A

• Type: BCD-to-decimal decoder / demultiplexer
• Inputs: 4-line BCD (A, B, C, D)
• Outputs: 10 lines (0–9), active LOW
• Package: 16-pin DIP (16PD)
• Logic Family: TTL 74xx
• Supply Voltage (Vcc): typically 5 V (4.75 – 5.25 V)
• Function: Converts 4-bit BCD input to one of ten decimal outputs
• Output Behavior: Only one output goes LOW for valid BCD (0000–1001); all HIGH for invalid inputs
• Propagation Delay: ~15–30 ns (typical)
• Output Current (LOW): up to ~8 mA
• Operating Temperature: 0 °C to +70 °C (commercial range)

Applications

• Decimal display decoding
• Data selection/demultiplexing
• Digital control circuits

Pin Summary (16-pin DIP)

• Pins 1–7, 9–11: Outputs 0–9
• Pins 12–15: BCD inputs (A–D)
• Pin 8: GND
• Pin 16: VCC