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74HC157 LS157 CMOS Quad 2-Line Multiplexer
High-speed Si-gate CMOS device with low power consumption.
- Output Drive Capability: 10 LSTTL Loads
- Operating Voltage Range: 2.0 to 6.0 V
- Low Input Current: 1.0 µA
- High Noise Immunity: CMOS Devices
The 74HC157 is identical in pinout to the LS157. It routes 2 nibbles (A or B) to a single port (Y) based on the Select input. Data is presented at the outputs in non-inverted form.
With a high level on the Output Enable input, all four Y outputs are set to a low level. This device is compatible with standard CMOS outputs and with pull-up resistors, also compatible with LSTTL outputs.
The 74HC157 is similar in function to the HC257, which features a 3-state output.
- Supply Voltage: 0.5 to +7.0V
- DC Input Voltage: 1.5 to VCC + 1.5V
- DC Output Voltage: 0.5 to VCC + 0.5V
- Clamp Diode Current: ±20 mA
- DC Output Current, per pin: ±25 mA
- DC VCC or GND Current, per pin: ±50 mA
- Storage Temperature Range: -65°C to +150 °C
- Power Dissipation: 500 mW
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* Images are for illustration only; actual product may vary.