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74ACT16646

16-Bit Transceiver/Register with 3-STATE Outputs

Fairchild Semiconductor 

August 1999

Revised October 1999

74ACT16646

16-Bit Transceiver/Register with 3-STATE Outputs

General Description

The ACT16646 contains sixteen non-inverting bidirectional

registered bus transceivers providing multiplexed transmis-

sion of data directly from the input bus or from the internal

storage registers. Each byte has separate control inputs

which can be shorted together for full 16-bit operation. The

DIR inputs determine the direction of data flow through the

device. The CPAB and CPBA inputs load data into the reg-

isters on the LOW-to-HIGH transition.

Features

s Independent registers for A and B buses

s Multiplexed real-time and stored data transfers

s Separate control logic for each byte

s 16-bit version of the ACT646

s Outputs source/sink 24 mA

s TTL-compatible inputs

Ordering Code:

Order Number Package Number

Package Description

74ACT16646SSC

MS56A

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

74ACT16646MTD

MTD56

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

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

Logic Symbol

Connection Diagram

FACT™ is a trademark of Fairchild Semiconductor Corporation.

© 1999 Fairchild Semiconductor Corporation DS500345

www.fairchildsemi.com

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