© 2005 Fairchild Semiconductor Corporation

DS500167

www.fairchildsemi.com

June 1999

Revised April 2005

74VCX245

Low Voltage Bidirectional Transceiver

with 3.6V Tolerant Inputs and Outputs

General Description

The VCX245 contains eight non-inverting bidirectional buff-

ers with 3-STATE outputs and is intended for bus oriented

applications. The T/R input determines the direction of data

flow. The OE input disables both the A and B ports by plac-

ing them in a high impedance state.

The 74VCX245 is designed for low voltage (1.4V to 3.6V)

The 74VCX245 is fabricated with an advanced CMOS

technology to achieve high-speed operation while main-

taining low CMOS power dissipation.

Features

s 3.6V tolerant inputs and outputs

s Power-off high impedance inputs and outputs

s Supports Live Insertion and Withdrawal (Note 1)

s Uses patented noise/EMI reduction

circuitry

s Latchup performance exceeds 300 mA

s ESD performance:

Human body model

! 2000V

Machine model

! 200V

s Leadless DQFN Pb-Free package

Note 1: To ensure the high impedance state during power up and power

value of the resistor is determined by the current sourcing capability of the

driver.

Ordering Code:

Pb-Free package per JEDEC J-STD-020B.

Note 2: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Note 3: DQFN package available in Tape and Reel only,

Logic Symbol

Pin Descriptions

Order Number

Package

Number

Package Description

74VCX245WM

(Note 2)

M20B

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

74VCX245BQX

(Note 3)

MLP020B

Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC

MO-241, 2.5 x 4.5mm

74VCX245MTC

(Note 2)

MTC20

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

Pin Names

Description

OE

Output Enable Input (Active LOW)

T/R

Transmit/Receive Input

Side A Inputs or 3-STATE Outputs

Side B Inputs or 3-STATE Outputs