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1CLKENAB

LEAB

CLKAB

1ERRA

1APAR

GND

1A1

1A2

1A3

1A4

1A5

1A6

GND

1A7

1A8

2A1

2A2

GND

2A3

2A4

2A5

2A6

2A7

2A8

GND

2APAR

2ERRA

OEAB

SEL

2CLKENAB

1CLKENBA

LEBA

CLKBA

1ERRB

1BPAR

GND

1B1

1B2

1B3

1B4

1B5

1B6

GND

1B7

1B8

2B1

2B2

GND

2B3

2B4

2B5

2B6

2B7

2B8

GND

2BPAR

2ERRB

OEBA

ODD/EVEN

2CLKENBA

DESCRIPTION/ORDERING INFORMATION

SN74LVCH16901

18-BIT UNIVERSAL BUS TRANSCEIVER

WITH PARITY GENERATORS/CHECKERS

SCES145C – OCTOBER 1998 – REVISED JUNE 2005

•

Member of the Texas Instruments Widebus+™

Family

•

UBT™ Transceiver Combines D-Type Latches

and D-Type Flip-Flops for Operation in

Transparent, Latched, or Clocked Modes

•

Operates From 1.65 V to 3.6 V

•

Inputs Accept Voltages to 5.5 V

•

•

•

•

Simultaneously Generates and Checks Parity

•

Option to Select Generate Parity and Check or

Feedthrough Data/Parity in A-to-B or B-to-A

Direction

•

Supports Mixed-Mode Signal Operation on All

Ports (5-V Input/Output Voltage With

•

Operation

•

Bus Hold on Data Inputs Eliminates the Need

for External Pullup/Pulldown Resistors

•

Latch-Up Performance Exceeds 100 mA Per

JESD 78, Class I

•

ESD Protection Exceeds JESD 22

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

The SN74LVCH16901 is a dual 9-bit to dual 9-bit parity transceiver with registers. The device can operate as a

feed-through transceiver, or it can generate/check parity from the two 8-bit data buses in either direction.

ORDERING INFORMATION

ORDERABLE PART NUMBER

TOP-SIDE MARKING

–40°C to 85°C

TSSOP – DGG

Tape and reel

SN74LVCH16901DGGR

LVCH16901

(1)

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Widebus+, UBT are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 1998–2005, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Not Recommended For New Designs