TC74AC245F

Bus XCVR Single 8CH 3-ST 20Pin SOP Tube

Octal Bus Transceiver

TC74AC245P/F/FT 3-State, Non-Inverting

TC74AC640P/F/FT 3-State, Inverting

The TC74AC245, 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. They are intended for two-way asynchronous communication between data busses. The direction of data transmission is determined by the level of the DIR input. The enable input G can be used to disable the device so that the busses are effectively isolated. All inputs are equipped with protection circuits against static discharge or transient excess voltage.

Features

• High speed: tpd = 3.9 ns typ. at VCC = 5 V

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

• High noise immunity: VNIH = VNIL =28% VCCmin

• Symmetrical output impedance:

|IOH| =IOL = 24 mA min

Capability of driving 50 Ωtransmission lines.

• Balanced propagation delays: tpLH

∼  − tpHL

• Wide operating voltage range: VCCopr =2 V to 5.5 V

• Pin and function compatible with 74F245/640