| Technology Family | HCT |
| Function | Digital Multiplexer |
| Configuration | 4:1 |
| Number of channels (#) | 2 |
| Operating temperature range (C) | -55 to 125 |
| Rating | Catalog |
- Common Select Inputs
- Separate Output-Enable Inputs
- Three-State Outputs
- Fanout (Over Temperature Range)
- Standard Outputs...10 LSTTL Loads
- Bus Driver Outputs...15 LSTTL Loads
- Wide Operating Temperature Range... –55°C to 125°C
- Balanced Propagation Delay and Transition Times
- Significant Power Reduction Compared to LSTTL Logic ICs
- HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
- HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il ≤ 1μA at VOL , VOH
Data sheet acquired from Harris Semiconductor
The CD74HC253 and CD74HCT253 are dual 4-to-1 line selector/multiplexers having three-state outputs. One of four sources for each section is selected by the common select inputs, S0 and S1. When the output enable (1OE\, 2OE\) is HIGH, the output is in the high-impedance state.