74F257A is a quad 2-line to 1-line selector/multiplexer with non-inverting data path and 3-State outputs from Philips Semiconductors. It can be used in the industrial range of -40°C to +85°C.
This datasheet describes the Philips 74F257A, a quad 2-input multiplexer with 3-State outputs. The device selects 4 bits of data from two sources under the control of a common Select input, providing data in a non-inverted form. It is available in both commercial and industrial temperature ranges.
| Supply Voltage (VCC) | 4.5V to 5.5V |
|---|---|
| Operating Temperature (Commercial) | 0°C to +70°C |
| Operating Temperature (Industrial) | -40°C to +85°C |
| Typical Propagation Delay | 4.3ns |
Outputs are forced to a high impedance “off” state when the Output Enable (OE) is High.
The I0a inputs are selected when the common Select input is Low.
All but one device must be in high impedance state to avoid currents that would exceed the maximum rating.