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1 Features

? Bidirectional voltage translator

? 4.5 V to 5.5 V on A port and

2.7 V to 5.5 V on B port

? Control inputs VIH and VIL levels are referenced to

VCCA voltage

? Latch-up performance exceeds 250 mA

per JESD 17

? ESD protection exceeds JESD 22

– 2000-V Human-Body Model (A114-A)

– 1000-V Charged-Device Model (C101)

2 Applications

? Level translation

? Personal electronics

? Industrial

? Enterprise

? Telecom

3 Description

This 8-bit (octal) noninverting bus transceiver uses

two separate power-supply rails. The A port, VCCA,

is dedicated to accepting a 5-V supply level, and the

configurable B port, which is designed to track VCCB,

accepts voltages from 3 V to 5 V. This allows for

translation from a 3.3-V to a 5-V environment and vice

versa.

The SN74LVCC4245A device is designed for

asynchronous communication between data buses.

The SN74LVCC4245A 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 effectively are

isolated. The control circuitry (DIR, OE) is powered by

VCCA.