TC74ACT157P中文资料东芝数据手册PDF规格书

Quad 2-Channel Multiplexer

The TC74ACT157 is an advanced high speed CMOS QUAD 2-CHANNEL MULTIPLEXER fabricated with silicon gate and double-layer metal wiring C2MOS technology.

It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation.

This device may be used as a level converter for interfacing TTL or NMOS to High Speed CMOS. The inputs are compatible with TTL, NMOS and CMOS output voltage levles.

This device consist of four 2-input digital multiplexer with common select and strobe inputs.

特性 Features

• High speed: tpd = 5.1 ns (typ.) at VCC = 5 V

• Low power dissipation: ICC = 8 μA (max) at Ta = 25°C

• Compatible with TTL outputs: VIL = 0.8 V (max)

VIH = 2.0 V (min)

• Symmetrical output impedance: |IOH| = IOL = 24 mA (min)

Capability of driving 50 Ω

transmission lines.

• Balanced propagation delays: tpLH ∼ − tpHL

• Pin and function compatible with 74F157