74ACT16543 16-Bit Registered Transceiver with 3-STATE Outputs
August 1999
Revised October 1999
74ACT16543
16-Bit Registered Transceiver with 3-STATE Outputs
General Description
The ACT16543 contains sixteen non-inverting transceivers
containing two sets of D-type registers for temporary stor-
age of data flowing in either direction. Each byte has sepa-
rate control inputs which can be shorted together for full
16-bit operation. Separate Latch Enable and Output
Enable inputs are provided for each register to permit inde-
pendent input and output control in either direction of data
flow.
Features
s
Independent registers for A and B buses
s
Separate controls for data flow in each direction
s
Back-to-back registers for storage
Multiplexed real-time and stored data transfers
s
Separate control logic for each byte
s
Outputs source/sink 24 mA
s
TTL-compatible inputs
Ordering Code:
Order Number
74ACT16543SSC
74ACT16543MTD
Package Number
MS56A
MTD56
Package Description
56-Lead Shrink Small Outline Package (SSOP), JEDEC MO-118, 0.300鈥?Wide
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 鈥淴鈥?to the ordering code.
Logic Symbol
Connection Diagram
Pin Descriptions
Pin Names
OEAB
n
OEBA
n
CEAB
n
CEBA
n
LEAB
n
LEBA
n
A
0
鈥揂
15
B
0
鈥揃
15
Descriptions
A-to-B Output Enable Input (Active LOW)
B-to-A Output Enable Input (Active LOW)
A-to-B Enable Input (Active LOW)
B-to-A Enable Input (Active LOW)
A-to-B Latch Enable Input (Active LOW)
B-to-A Latch Enable Input (Active LOW)
A-to-B Data Inputs or
B-to-A 3-STATE Outputs
B-to-A Data Inputs or
A-to-B 3-STATE Outputs
FACT鈩?is a trademark of Fairchild Semiconductor Corporation.
漏 1999 Fairchild Semiconductor Corporation
DS500301
www.fairchildsemi.com
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