74AHC257 Quad 2-to-1 Mux

74AHC257

Texas Instrumentsic logic

The SN74AHC257 is a quad 2-to-1 multiplexer with 3-state outputs, used for data selection and multiplexing applications.

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Specifications

Pin	Name	Functions	Notes
1	A/B	GPIO	Data select input for all channels
2	1A	GPIO	Channel 1, input A
3	1B	GPIO	Channel 1, input B
4	1Y	GPIO	Channel 1, output Y
5	2A	GPIO	Channel 2, input A
6	2B	GPIO	Channel 2, input B
7	2Y	GPIO	Channel 2, output Y
8	GND	GND
9	3A	GPIO	Channel 3, input A
10	3B	GPIO	Channel 3, input B
11	3Y	GPIO	Channel 3, output Y
12	4A	GPIO	Channel 4, input A
13	4B	GPIO	Channel 4, input B
14	4Y	GPIO	Channel 4, output Y
15	OE	GPIO	Output enable input for all channels, active low
16	VCC	POWER

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74AHC257

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