參數(shù)資料
型號(hào)： M74HC257TTR
廠(chǎng)商： 意法半導(dǎo)體
英文描述： QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
中文描述： 四2通道多路復(fù)用器（3態(tài)）
文件頁(yè)數(shù)： 1/11頁(yè)
文件大?。?/td> 195K
代理商： M74HC257TTR
1/11
August 2001
I
HIGH SPEED :
t
PD
= 11 ns (TYP.) at V
CC
= 6V
LOW POWER DISSIPATION:
I
CC
=4
μ
A(MAX.) at T
A
=25°C
HIGH NOISE IMMUNITY:
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 6mA (MIN)
BALANCED PROPAGATION DELAYS:
t
PLH
t
PHL
WIDE OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2V to 6V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 257
I
I
I
I
I
I
DESCRIPTION
The M74HC257 is an high speed CMOS QUAD 2
CHANNEL MULTIPLEXER (3-STATE) fabricated
with silicon gate C
2
MOS technology.
This IC is composed of an independent 2-channel
multiplexer with common SELECT and ENABLE
(OE) input.
The M74HC257 is a non-inverting multiplexer.
When the ENABLE input is held "High", outputs of
the IC become in a High-Impedance state. If
SELECT input is held low, "A" data is selected,
when SELECT is high , "B" data is chosen.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
M74HC257
QUAD 2 CHANNEL MULTIPLEXER (3-STATE)
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE
TUBE
T & R
DIP
SOP
TSSOP
M74HC257B1R
M74HC257M1R
M74HC257RM13TR
M74HC257TTR
TSSOP
DIP
SOP
相關(guān)PDF資料
PDF描述
M74HC258 Quad 2 Channel Multiplexer (3-STATE)(四2通道多路復(fù)用器(三態(tài)))
M74HC257 Quad 2 Channel Multiplexer (3-STATE)(四2通道多路復(fù)用器(三態(tài)))
M74HC259 8 Bit Addressable Latch(八位可尋址鎖存器)
PCF8575C Remote 16-bit I/O expander for I2C-bus
M74HC273 Octal D Type Flip Flop with Clear(帶清除端的八D觸發(fā)器)
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(chēng):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(chēng):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(chēng):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(chēng):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(chēng):STMicroelectronics 功能描述:HC258QUAD 2CHANNEL MULTIPLEXER 3-STATE, INVERTING HC257 QUAD 2 CHANNEL MULTIPLEXER 3-STATE
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