Part # M74HC257 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Quad 2 channel multiplexer (3-state)

Part Details:

M74HC257 QUAD 2 CHANNEL MULTIPLEXER (3-STATE) s HIGH SPEED : tPD = 11 ns (TYP.) at VCC = 6V s LOW POWER DISSIPATION:ICC =4µA(MAX.) at TA=25°C s HIGH NOISE IMMUNITY:VNIH = VNIL = 28 % VCC (MIN.) s SYMMETRICAL OUTPUT IMPEDANCE: DIP SOP TSSOP |IOH| = IOL = 6mA (MIN) s BALANCED PROPAGATION DELAYS:tPLH tPHL ORDER CODES s WIDE OPERATING VOLTAGE RANGE: PACKAGE TUBE T & R VCC (OPR) = 2V to 6V DIP M74HC257B1R s PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 257 SOP M74HC257M1R M74HC257RM13TR TSSOP M74HC257TTR DESCRIPTIONThe M74HC257 is an high speed CMOS QUAD 2 When the ENABLE input is held "High", outputs of CHANNEL MULTIPLEXER (3-STATE) fabricated the IC become in a High-Impedance state. If with silicon gate C2MOS technology. SELECT input is held low, "A" data is selected, This IC is composed of an independent 2-channel when SELECT is high , "B" data is chosen. multiplexer with common SELECT and ENABLE All inputs are equipped with protection circuits (OE) input. against static discharge and transient excess The M74HC257 is a non-inverting multiplexer. voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS August 2001 1/11 M74HC257 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION

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M74HC257.pdf Datasheet