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M74HC257 |
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| Part Number | M74HC257 |
| Manufacturer | STMicroelectronics (https://www.st.com/) |
| Description | sThe M74HC257 is an high speed CMOS QUAD 2 bCHANNEL MULTIPLEXER (3-STATE) fabricated Owith silicon gate C2MOS technology. -This IC is composed of an independent 2-channel t(s)multiplexer with common S... |
| Features |
osen. All inputs are equipped with protection circuits against static discharge and transient excess voltage.
Obsolete ProduPIN CONNECTION AND IEC LOGIC SYMBOLS
August 2001
1/11
M74HC257
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
SYMBOL NAME AND FUNCTION
1
SELECT
Common Data Select Input
2, 5, 14, 11 1A to 4A Data Input From Source A
3, 6, 13, 10 1B to 4B Data Input From Source B
4, 7, 12, 9
1Y to 4Y
3 State Multiplexer Outputs
15
OE
3 State Output Enable Inputs (Active Low)
t(s)TRUTH TABLE roducOE PH teL leL oL sL
bX : Don’t Care OZ : High Impedance Obsolet... |
| Document |
 M74HC257 Data Sheet
PDF 269.54KB |
| Distributor | Stock | Price | Buy |
|---|
| No. | Parte # | Fabricante | Descripción | Hoja de Datos |
|---|---|---|---|---|
| 1 | M74HC251 |
ST Microelectronics |
8 BIT SIPO SHIFT REGISTER |
|
| 2 | M74HC253 |
STMicroelectronics |
DUAL 4-CHANNEL MULTIPLEXER |
|
| 3 | M74HC258 |
ST Microelectronics |
QUAD 2-CHANNEL MULTIPLEXER |
|
| 4 | M74HC259 |
ST Microelectronics |
8 BIT ADDRESSABLE LATCH |
|
| 5 | M74HC20 |
ST Microelectronics |
DUAL 4-INPUT NAND GATE |
|