© 2003 Fairchild Semiconductor Corporation

DS011620

www.fairchildsemi.com

July 1993

Revised September 2003

74LVX3245

8-Bit Dual Supply Translating Transceiver with

3-STATE Outputs

General Description

The LVX3245 is a dual-supply, 8-bit translating transceiver

that is designed to interface between a 3V bus and a 5V

bus in a mixed 3V/5V supply environment. The Transmit/

Receive (T/R) input determines the direction of data flow.

Transmit (active-HIGH) enables data from A Ports to B

Ports; Receive (active-LOW) enables data from B Ports to

A Ports. The Output Enable input, when HIGH, disables

both A and B Ports by placing them in a high impedance

condition. The A Port interfaces with the 3V bus; the B Port

interfaces with the 5V bus.

The LVX3245 is suitable for mixed voltage applications

such as notebook computers using 3.3V CPU and 5V

peripheral components.

Features

s Bidirectional interface between 3V and 5V buses

s Inputs compatible with TTL level

s 3V data flow at A Port and 5V data flow at B Port

s Outputs source/sink 24 mA

s Guaranteed simultaneous switching noise level and

dynamic threshold performance

s Implements proprietary EMI reduction circuitry

s Functionally compatible with the 74 series 245

Ordering Code:

Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

Logic Symbol

Pin Descriptions

Connection Diagram

Order Number

Package Number

Package Description

74LVX3245WM

M24B

24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide

74LVX3245QSC

MQA24

24-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide

74LVX3245MTC

MTC24

24-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

Pin Names

Description

OE

Output Enable Input

T/R

Transmit/Receive Input

Side A Inputs or 3-STATE Outputs

Side B Inputs or 3-STATE Outputs