1.

General description

The 74LVC8T245; 74LVCH8T245 are 8-bit dual supply translating transceivers with

3-state outputs that enable bidirectional level translation. They feature two data

input-output ports (pins An and Bn), a direction control input (DIR), an output enable input

any voltage between 1.2 V and 5.5 V making the device suitable for translating between

any of the low voltage nodes (1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V and 5.0 V). Pins An, OE and

transmission from An to Bn and a LOW on DIR allows transmission from Bn to An. The

output enable input (OE) can be used to disable the outputs so the buses are effectively

isolated.

circuitry disables the output, preventing any damaging backflow current through the

GND level, both A port and B port are in the high-impedance OFF-state.

Active bus hold circuitry in the 74LVCH8T245 holds unused or floating data inputs at a

valid logic level.

2.

Features and benefits

74LVC8T245; 74LVCH8T245

8-bit dual supply translating transceiver; 3-state

Rev. 3 — 12 December 2011

Product data sheet