74F251A is a 8-input multiplexer (3-State) produced by Philips Semiconductors. It has high speed, multifunction and other characteristics. Its outputs have open drain properties. When OE is high, the output enters high impedance state and can be connected to a common bus.
This document is a product specification sheet for the 74F251A, a high-speed logic implementation of an 8-position switch. The device features both true (Y) and complementary (Y') outputs which are both in a 3-state mode when the Output Enable (OE) input is High. This allows multiple devices to be connected to a common bus without loading it significantly.
| Operating Temperature Range | 0°C to +70°C |
|---|---|
| Supply Voltage (Recommended) | 4.5V to 5.5V |
| High-Level Output Current | -3mA |
| Low-Level Output Current | 24mA |
The Output Enable (OE) input is active Low; when it is High, both outputs enter a High impedance state.
The 74F251A is an 8-input multiplexer with three Select inputs (S0, S1, S2).