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參數(shù)資料
| 型號： | M74HC257TTR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 編、解碼器及復(fù)用、解復(fù)用 |
| 英文描述： | HC/UH SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16 |
| 封裝： | TSSOP-16 |
| 文件頁數(shù)： | 4/11頁 |
| 文件大?。?/td> | 267K |
| 代理商： | M74HC257TTR |
M74HC257
2/11
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X : Don’t Care
Z : High Impedance
LOGIC DIAGRAM
This logic diagram has not be used to estimate propagation delays
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)
8
GND
Ground (0V)
16
Vcc
Positive Supply Voltage
INPUTS
OUTPUT
OE
SELECT
A
B
Y
HX
XX
Z
LLL
X
L
LL
H
X
H
LH
X
L
LH
X
H
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M74HC258 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE, INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE |
| M74HC258B1R | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE, INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE |
| M74HC258C1R | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE, INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE |
| M74HC258F1R | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HC158 QUAD 2 CHANNEL MULTIPLEXER INV. HC157 QUAD 2 CHANNEL MULTIPLEXER |
| M74HC258M1R | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE, INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE |
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