Texas Instruments SN74LVCZ245AN

IC TXRX NON-INVERT 3.6V 20DIP / Transceiver, Non-Inverting 1 Element 8 Bit per Element 3-State Output 20-PDIP

ROHS3Compliant BIDIRECTIONAL DUAL CMOS Logic Transceiver, Non-Inverting -40C~85C TA 3.3V 25.4mm 6.3ns

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

OCTAL BUS TRANSCEIVER WITH 3-STATE

This octal bus transceiver is designed for 2.7-V to 3.6-V VCC operation. The SN74LVCZ245A is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE)\ input can be used to disable the device so the buses are effectively isolated. Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in a mixed 3.3-V/5-V system environment. When VCC is between 0 and 1.5 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. This device is fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.