TC74AC640F(EL,F) Toshiba

TC74AC245F,TC74AC640F CMOS Digital Integrated Circuits Silicon Monolithic TC74AC245F,TC74AC640F 1. Functional Description Octal Bus Transceiver TC74AC245F:3-State, Non-Inverting TC74AC640F:3-State, Inverting 2. General The TC74AC245F, TC74AC640F 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. 3. Features (Note) (1) High speed: t = 3.9 ns (typ.) at V = 5.0 V pd CC (2) Low power dissipation: I = 8.0 A (max) at T = 25 CC a (3) High noise immunity: V = V = 28 % V (min) NIH NIL CC (4) Output current: I /I = 24 mA (min) (V = 4.5 V) OH OL CC (5) Balanced propagation delays: t t PLH PHL (6) Wide operating voltage range: V = 2.0 V to 5.5 V CC(opr) (7) Pin and function compatible with 74F245/640. Note: Do not apply a signal to any bus pins when it is in the output mode. Damage may result. All floating (high impedance) bus pins must have their input levels fixed by means of pull-up or pull-down resistors. 4. Packaging SOP20 Start of commercial production 1986-05 2021 2021-03-01 1 Toshiba Electronic Devices & Storage Corporation Rev.1.0TC74AC245F,TC74AC640F 5. Pin Assignment TC74AC245F TC74AC640F 6. Marking TC74AC245F TC74AC640F 2021 2021-03-01 2 Toshiba Electronic Devices & Storage Corporation Rev.1.0