IDT54/74FCT543T/AT/CT/DT
FAST CMOS OCTAL LATCHED TRANSCEIVER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
FAST CMOS
OCTAL LATCHED
TRANSCEIVER
IDT54/74FCT543T/AT/CT/DT
FEATURES:
DESCRIPTION:
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The FCT543T is a non-inverting octal transceiver built using an advanced
dual metal CMOS technology. This device contains 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 A0–A7 or to take data from B0–B7, 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-tohigh 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.
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Std., A, C, and D grades
Low input and output leakage ≤1µA (max.)
CMOS power levels
True TTL input and output compatibility:
– VOH = 3.3V (typ.)
– VOL = 0.3V (typ.)
High Drive outputs (-15mA IOH, 64mA IOL)
Meets or exceeds JEDEC standard 18 specifications
Military product compliant to MIL-STD-883, Class B and DESC
listed (dual marked)
Power off disable outputs permit "live insertion"
Available in the following packages:
– Industrial: SOIC, SSOP, QSOP
– Military: CERDIP, LCC
FUNCTIONAL BLOCK DIAGRAM
DETAIL A
D
Q
B0
LE
Q
A0
D
LE
A1
B1
A2
B2
A3
A4
B3
DETAIL A x 7
B4
A5
B5
A6
B6
A7
B7
OEBA
OEAB
CEBA
LEBA
CEAB
LEAB
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
JUNE 2002
1
© 2002 Integrated Device Technology, Inc.
DSC-5489/4
