The 74F258A has four identical 2-input multiplexers with 3-State outputs which select 4 bits of data from two sources under control of a common Select (S) input. The I0n inputs are selected when the Select input is Low and the I1n inputs are selected when the Select input is High. Data appears at the outputs in inverted form.
This document is a datasheet for the Philips 74F258A, an integrated circuit containing four identical 2-input multiplexers with 3-State outputs. The device selects 4 bits of data from two sources under the control of a common Select input, with data appearing at the outputs in inverted form. It is designed as the logical implementation of a 4-pole, 2-position switch.
| Number of multiplexers | Four |
|---|---|
| Input configuration | 2-line to 1-line |
| Output type | Inverting (3-State) |
| Supply voltage (nominal) | 5.0 V |
| Operating temperature range | 0 to +70 °C |
| Typical propagation delay | 3.5 ns |
| Typical supply current (total) | 14 mA |
The Select input determines which data source is selected; I0n inputs are selected when Select is Low and I1n inputs are selected when Select is High.
Outputs are forced to a High impedance 'off' state when the Output Enable input is High.
Yes, data appears at the outputs in inverted form.