參數(shù)資料
型號: M74HC257C1R
廠商: 意法半導(dǎo)體
英文描述: HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE, INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE
中文描述: HC258QUAD 2頻道多路轉(zhuǎn)換三態(tài),反相HC257四2通道多路3態(tài)
文件頁數(shù): 5/12頁
文件大小: 259K
代理商: M74HC257C1R
INPUT AND OUTPUT EQUIVALENT CIRCUIT
CHIP CARRIER
NC = No Internal Connection
HC257
HC258
PIN DESCRIPTION (HC257)
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 Inputs 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
PIN DESCRIPTION (HC258)
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 Inputs 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
M54/M74HC257/258
2/12
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