The KK74HC139A is a dual 1-of-4 Decoder/Demultiplexer consisting of two independent 1-of-4 decoders, each of which decodes a two-bit Address to one-of-four active-low outputs.
The KodenShi KK74HC139A is a high-speed silicon-gate CMOS device consisting of two independent 1-of-4 decoders. Each decoder takes two-bit address inputs to select one of four active-low outputs, facilitating demultiplexing and cascading functions.
The device features an operating voltage range of 2.0V to 6.0V and is pin-compatible with LS/ALS139 TTL devices. It includes protection circuitry against high static voltages and electric fields, ensuring robust operation in various environments.
| Operating Voltage Range | 2.0 to 6.0 V |
|---|---|
| Low Input Current | 1.0 pA |
| Operating Temperature Range | -55°C to +125°C |
| Maximum Output Current (per Pin) | +25 mA |
Yes, the device inputs are compatible with standard CMOS outputs and it is identical in pinout to LS/ALS139.
The device is available in Plastic DIP (N suffix) and SOIC (D suffix) packages.