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IDT54FCT2543TLB Datasheet

  • IDT54FCT2543TLB

  • FAST CMOS OCTAL LATCHED TRANSCEIVER

  • 7頁

  • IDT

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FAST CMOS
OCTAL LATCHED
TRANSCEIVER
Integrated Device Technology, Inc.
IDT54/74FCT543T/AT/CT/DT
IDT54/74FCT2543T/AT/CT
FEATURES:
鈥?Common features:
鈥?Low input and output leakage
鈮?碌A(chǔ)
(max.)
鈥?CMOS power levels
鈥?True TTL input and output compatibility
鈥?V
OH
= 3.3V (typ.)
鈥?V
OL
= 0.3V (typ.)
鈥?Meets or exceeds JEDEC standard 18 specifications
鈥?Product available in Radiation Tolerant and Radiation
Enhanced versions
鈥?Military product compliant to MIL-STD-883, Class B
and DESC listed (dual marked)
鈥?Available in DIP, SOIC, SSOP, QSOP, CERPACK
and LCC packages
鈥?Features for FCT543T:
鈥?Std., A, C and D speed grades
鈥?High drive outputs (-15mA I
OH
, 64mA I
OL
)
鈥?Power off disable outputs permit 鈥渓ive insertion鈥?/div>
鈥?Features for FCT2543T:
鈥?Std., A, and C speed grades
鈥?Resistor outputs (-15mA I
OH
, 12mA I
OL
Com.)
(-12mA I
OH
, 12mA I
OL
Mil.)
鈥?Reduced system switching noise
DESCRIPTION:
The FCT543T/FCT2543T is a non-inverting octal trans-
ceiver 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 A
0
鈥揂
7
or to take data from
B
0
鈥揃
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.
The FCT2543T has balanced output drive with current
limiting resistors. This offers low ground bounce, minimal
undershoot and controlled output fall times-reducing the need
for external series terminating resistors. FCT2xxxT parts are
plug-in replacements for FCTxxxT parts.
FUNCTIONAL BLOCK DIAGRAM
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
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
CEAB
2613 drw 01
LEAB
MILITARY AND COMMERCIAL TEMPERATURE RANGES
漏1995
Integrated Device Technology, Inc.
JANUARY 1995
DSC-4203/5
6.17
1

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