© 2005 Fairchild Semiconductor Corporation

DS500052

www.fairchildsemi.com

August 1998

Revised June 2005

Print form created on June 10, 2005 12:56 pm

74LCXR162245

Low Voltage 16-Bit Bidirectional Transceiver

with 5V Tolerant Inputs/Outputs

and 26

: Series Resistors in the Outputs

General Description

The LCXR162245 contains sixteen non-inverting bidirec-

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

oriented applications. The device is designed for low volt-

facing to a 5V signal environment. The device is byte

controlled. Each byte has separate control inputs which

could be shorted together for full 16-bit operation. The T/R

inputs determine the direction of data flow through the

device. The OE inputs disable both the A and B ports by

placing them in a high impedance state.

In addition, all A and B outputs include equivalent 26

:

(nominal) series resistors to reduce overshoot and under-

shoot and are designed to sink/source up to 12 mA at

The LCXR162245 is fabricated with an advanced CMOS

technology to achieve high speed operation while maintain-

ing CMOS low power dissipation.

Features

s 5V tolerant inputs and outputs

s A and B side outputs have equivalent 26

: series

resistors

s Power down high impedance inputs and outputs

s Supports live insertion/withdrawal (Note 1)

s Flow through pinout

s Implements patented noise/EMI reduction circuitry

s Latch-up performance exceeds 500 mA

s ESD performance:

Human body model

! 2000V

Machine model

! 200V

Note 1: To ensure the high-impedance state during power up or down OE

resistor is determined by the current-sourcing capability of the driver.

Ordering Code:

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

Logic Symbol

Pin Descriptions

Order Number

Package Number

Package Description

74LCXR162245MEA

MS48A

48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide

[RAIL]

74LCXR162245MEX

MS48A

48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide

[TAPE and REEL]

74LCXR162245MTD

MTD48

48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide

[RAIL]

74LCXR162245MTX

MTD48

48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide

[TAPE and REEL]

Pin Names

Description

Output Enable Input

Transmit/Receive Input

Side A Inputs or 3-STATE Outputs

Side B Inputs or 3-STATE Outputs