Key facts
- Brand
- Philips
- Model
- 74F257A
- Category
- multiplexer
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2014-06-04
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Philips 74F257A Quad 2-line to 1-line Selector Datasheet
The Philips 74F257A is an integrated circuit containing four identical 2-input multiplexers with 3-state outputs. It selects 4 bits of data from two sources under the control of a common Select input, implementing the logic of a 4-pole, 2-position switch. The device features non-inverting data paths and allows outputs to be forced into a high-impedance state when the Output Enable input is High.
Read onlinePhilips 74F257A specifications
| Number of multiplexers | Four |
|---|---|
| Input configuration | 2-input |
| Output type | 3-State |
| Operating temperature (Industrial) | -40°C to +85°C |
Source: Philips 74F257A Quad 2-line to 1-line Selector Datasheet
All Philips 74F257A documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the function of the common Select input?
The common Select input determines which data source is selected; Low selects the I0a inputs and High selects the I1n inputs.
From: Philips 74F257A Quad 2-line to 1-line Selector Datasheet
How are the outputs disabled?
Outputs are forced to a high impedance off state when the Output Enable (OE) input is High.
From: Philips 74F257A Quad 2-line to 1-line Selector Datasheet
What is the function of the Output Enable (OE) input?
Outputs are forced to a high impedance “off” state when the Output Enable (OE) is High.
From: PHILIPS 74F257A Quad 2-line to 1-line selector/multiplexer non-inverting (3-State) handbook
Which inputs are selected when the common Select input is Low?
The I0a inputs are selected when the common Select input is Low.
From: PHILIPS 74F257A Quad 2-line to 1-line selector/multiplexer non-inverting (3-State) handbook