TC74ACT640P中文资料东芝数据手册PDF规格书

TC74ACT245P/F/FT 3-State, Non-Inverting

TC74ACT640P/F/FT 3-State, Inverting

The TC74ACT245 and 640 are advanced high speed CMOS OCTAL BUS TRANSCEIVERs fabricated with silicon gate and double-layer metal wiring C2MOS technology. They achieve the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation.

Features

• High speed: tpd = 4.7 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 74F245/640