M74HC257 Quad 2-Channel Multiplexer (3-State)

The M74HC257 is an high speed CMOS QUAD 2 CHANNEL MULTIPLEXER (3-STATE) fabricated with silicon gate C2MOS 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

技术特性

High speed:
- tPD=11ns (TYP.) at VCC= 6V
Low power dissipation:
- ICC= 4 µA(MAX.) at TA=25 °C
High noise immunity:
- VNIH= VNIL= 28 % VCC (MIN.)
Symmetrical output impedance:
- |IOH| = IOL= 6mA (MIN)
Balanced propagation delays:
- tPLH tPHL
Wide operating voltage range:
- VCC(OPR) = 2V to 6V
Pin and function compatible with 74 series 257

M74HC257 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
M74HC257TTR	Active		1000	TSSOP 16	Tape And Reel		M74HC257TTR
M74HC257RM13TR	Active		1000	SO-16	Tape And Reel		M74HC257RM13TR
M74HC257B1R	Active		1000	PDIP 16	Tube		M74HC257B1R

DATASHEET

描述	版本	大小
M74HC257 : DS0267: Quad 2 channel multiplexer (3-state)	2	266KB