Octal Bus Transceiver With 5 V−Tolerant Inputs

The MC74LVX245 is an advanced high speed CMOS octal bus transceiver.

It is intended for two−way asynchronous communication between data buses. The direction of data transmission is determined by the level of the T/R input. The output enable pin (OE) can be used to disable the device, so that the buses are effectively isolated.

All inputs are equipped with protection circuits against static discharge.

Features

• High Speed: tPD = 4.7 ns (Typ) at VCC = 3.3 V

• Low Power Dissipation: ICC = 4 μA (Max) at TA = 25°C

• Power Down Protection Provided on Inputs

• Balanced Propagation Delays

• Low Noise: VOLP = 0.8 V (Max)

• Pin and Function Compatible with Other Standard Logic Families

• Latchup Performance Exceeds 300 mA

• ESD Performance: Human Body Model > 2000 V;

Machine Model > 200 V

• Pb−Free Packages are Available*

Application Notes

• Do not force a signal on an I/O pin when it is an active output, damage may occur

• All floating (high impedance) input or I/O pins must be fixed by means of pullup or pulldown resistors or bus terminator ICs

• A parasitic diode is formed between the bus and VCC terminals. Therefore, the LVX245 cannot be used to interface 5.0 V to 3.0 V systems directly