© 1999 Fairchild Semiconductor Corporation

ds500198

www.fairchildsemi.com

June 1999

Revised June 1999

74VCXH245

Low Voltage Bidirectional Transceiver with Bushold

General Description

The VCXH245 contains eight non-inverting bidirectional

buffers with 3-STATE outputs and is intended for bus ori-

ented applications. The T/R input determines the direction

of data flow. The OE input disables both the A and B Ports

by placing them in a high impedance state. The VCXH245

data inputs include active bushold circuitry, eliminating the

need for external pull-up resistors to hold unused or float-

ing data inputs at a valid logic level.

The 74VCXH245 is designed for low voltage (1.65V to

The 74VCXH245 is fabricated with an advanced CMOS

technology to achieve high-speed operation while main-

taining low CMOS power dissipation.

Features

s Bushold on data inputs eliminates the need for external

pull-up/pull-down resistors

±24 mA @ 3.0V V

CC

±18 mA @ 2.3V V

CC

± 6mA @ 1.65V V

CC

s Uses patented Quiet Series noise/EMI reduction

circuitry

s Latchup performance exceeds 300 mA

s ESD performance:

Human body model

> 2000V

Machine model

> 200V

Ordering Code:

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

Logic Symbol

Pin Descriptions

Quiet Series

™ is a trademark of Fairchild Semiconductor Corporation.

Order Number

Package Number

Package Description

74VCXH245WM

M20B

20-Lead Small Outline Integrated Circuit, JEDEC MS-013, 0.300” Wide Body

74VCXH245MTC

MTC20

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

Pin Names

Description

OE

Output Enable Input (Active LOW)

T/R

Transmit/Receive Input

Side A Bushold Inputs or 3-STATE Outputs

Side B Bushold Inputs or 3-STATE Outputs