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IDT74FCT543APB

Description
FAST CMOS OCTAL LATCHED TRANSCEIVER
File Size48KB,7 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
Download Datasheet View All

IDT74FCT543APB Overview

FAST CMOS OCTAL LATCHED TRANSCEIVER

®
FAST CMOS
OCTAL LATCHED
TRANSCEIVER
DESCRIPTION:
IDT54/74FCT543
IDT54/74FCT543A
IDT54/74FCT543C
Integrated Device Technology, Inc.
FEATURES:
IDT54/74FCT543 equivalent to FAST™ speed
IDT54/74FCT543A 25% faster than FAST
IDT54/74FCT543C 40% faster than FAST
Equivalent to FAST output drive over full temperature
and voltage supply extremes
I
OL
= 64mA (commercial), 48mA (military)
Separate controls for data flow in each direction
Back-to-back latches for storage
CMOS power levels (1mW typ. static)
Substantially lower input current levels than FAST
(5µA max.)
TTL input and output level compatible
CMOS output level compatible
Product available in Radiation Tolerant and Radiation
Enhanced versions
Military product compliant to MIL-STD-883, Class B
The IDT54/74FCT543/A/C is a non-inverting octal trans-
ceiver built using an advanced dual metal CMOS technology.
These devices contain two sets of eight D-type latches with
separate input and output controls for each set. For data flow
from A to B, for example, the A-to-B Enable (
CEAB
) input must
be LOW in order to enter data from A
0
–A
7
or to take data from
B
0
–B
7
, as indicated in the Function Table. With
CEAB
LOW,
a LOW signal on the A-to-B Latch Enable (
LEAB
) input makes
the A-to-B latches transparent; a subsequent LOW-to-HIGH
transition of the
LEAB
signal puts the A latches in the storage
mode and their outputs no longer change with the A inputs.
With
CEAB
and
OEAB
both LOW, the 3-state B output buffers
are active and reflect the data present at the output of the A
latches. Control of data from B to A is similar, but uses the
CEBA
,
LEBA
and
OEBA
inputs.
FUNCTIONAL BLOCK DIAGRAMS
DETAIL A
D
LE
A
0
Q
D
LE
Q
B
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
DETAIL A x 7
B
1
B
2
B
3
B
4
B
5
B
6
B
7
OEBA
OEAB
CEBA
LEBA
CEAB
LEAB
2614 drw 01
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
FAST is a registered trademark of National Semiconductor Co.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1992
Integrated Device Technology, Inc.
MAY 1992
DSC-4602/3
7.17
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