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TC74HC257AF Dataheets PDF



Part Number TC74HC257AF
Manufacturers Toshiba
Logo Toshiba
Description Quad 2-Channel Multiplexer
Datasheet TC74HC257AF DatasheetTC74HC257AF Datasheet (PDF)

TC74HC257AP/AF TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74HC257AP, TC74HC257AF Quad 2-Channel Multiplexer (3-state) The TC74HC257A is high speed CMOS MULTIPLEXER fabricated with silicon gate C2MOS technology. It achieves the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. It is composed of four independent 2-channel multiplexers with common SELECT and OUTPUT ENABLE ( OE ). If OE is set low, the outputs are held in a high-imp.

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TC74HC257AP/AF TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74HC257AP, TC74HC257AF Quad 2-Channel Multiplexer (3-state) The TC74HC257A is high speed CMOS MULTIPLEXER fabricated with silicon gate C2MOS technology. It achieves the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. It is composed of four independent 2-channel multiplexers with common SELECT and OUTPUT ENABLE ( OE ). If OE is set low, the outputs are held in a high-impedance state. When SELECT is set low, “A” data inputs are enabled. Conversely, when SELECT is high, “B” data inputs are enabled. All inputs are equipped with protection circuits against static discharge or transient excess voltage. Features • High speed: tpd = 10 ns (typ.) at VCC = 5 V • Low power dissipation: ICC = 4 μA (max) at Ta = 25°C • High noise immunity: VNIH = VNIL = 28% VCC (min) • Output drive capability: 15 LSTTL loads • Symmetrical output impedance: |IOH| = IOL =.


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