© 2001 Fairchild Semiconductor Corporation

DS012449

www.fairchildsemi.com

January 2000

Revised October 2001

74LVT16543 • 74LVTH16543

Low Voltage 16-Bit Registered Transceiver

with 3-STATE Outputs

General Description

The

LVT16543

and

LVTH16543

16-bit

transceivers

contain two sets of D-type latches for temporary storage of

data flowing in either direction. Separate Latch Enable and

Output Enable inputs are provided for each register to per-

mit independent control of inputting and outputting in either

direction of data flow. Each byte has separate control

inputs, which can be shorted together for full 16-bit opera-

tion.

The LVTH16543 data inputs include bushold, eliminating

the need for external pull-up resistors to hold unused

inputs.

These transceivers are designed for low-voltage (3.3V)

interface to a 5V environment. The LVT16543 and

LVTH16543 are fabricated with an advanced BiCMOS

technology to achieve high speed operation similar to 5V

ABT while maintaining low power dissipation.

Features

s Input and output interface capability to systems at

s Bushold data inputs eliminate the need for external

pull-up resistors to hold unused inputs (74LVTH16543)

s Also available without bushold feature (74LVT16543)

s Live insertion/extraction permitted

s Power Up/Down high impedance provides glitch-free

bus loading

s Outputs source/sink

−32 mA/+64 mA

s Functionally compatible with the 74 series 16543

s Latch-up conforms to JEDEC JED78

s ESD performance:

Human-body model

> 2000V

Machine model

> 200V

Charged-device model

> 1000V

Ordering Code:

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

Logic Symbol

Order Number

Package Number

Package Description

74LVT16543MEA

(Preliminary)

MS56A

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

74LVT16543MTD

(Preliminary)

MTD56

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

74LVTH16543MEA

MS56A

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

74LVTH16543MTD

MTD56

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