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FEATURES

· Operates From 1.65 V to 3.6 V

· Max tpd of 3.4 ns at 3.3 V

· ±24-mA Output Drive at 3.3 V

· Bus Hold on Data Inputs Eliminates the Need

for External Pullup/Pulldown Resistors

· Latch-Up Performance Exceeds 100 mA Per

JESD 78, Class II

DESCRIPTION/ORDERING INFORMATION

This octal bus transceiver is designed for 1.65-V to

3.6-V VCC operation.

The SN74ALVCH245 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.

To ensure the high-impedance state during power up or power down, 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.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors

with the bus-hold circuitry is not recommended.