The document introduces the M74HCT157, which is a high-speed CMOS quad 2-input digital multiplexer. It features high speed, low power dissipation, compatibility with TTL outputs, etc. The device consists of four 2-input digital multiplexers with common select and strobe inputs. When the STROBE input is held high, data selection is inhibited and all the outputs become low. The SELECT decoding determines whether the A or B inputs get routed to their corresponding Y outputs. All inputs are equipped with protection circuits against static discharge and transient excess voltage.
The M74HCT157 is a high-speed CMOS quad 2-channel multiplexer fabricated with silicon gate CMOS technology. It consists of four 2-input digital multiplexers with common select and strobe inputs, designed to be compatible with TTL outputs and the 74 series 157 logic family. The device features symmetrical output impedance and balanced propagation delays.
| Propagation Delay Time (Typical) | 16ns |
|---|---|
| Low Power Dissipation (Max) | 4mW |
| Operating Temperature Range | -55 to 125 °C |
The typical propagation delay is 16ns at a supply voltage of 4.5V.
Yes, the device is compatible with TTL outputs with a minimum input voltage of 2V.
When the STROBE input is held high, the selection of data is inhibited and all outputs become low.