IDT54/74FCT273T/AT/CT
FAST CMOS
OCTAL D FLIP-FLOP
WITH MASTER RESET
Integrated Device Technology, Inc.
DESCRIPTION:
FEATURES:
The IDT54/74FCT273T/AT/CT are octal D flip-flops built
using an advanced dual metal CMOS technology. The IDT54/
74FCT273T/AT/CT have eight edge-triggered D-type flip-
flops with individual D inputs and O outputs. The common
buffered Clock (CP) and Master Reset (MR) inputs load and
reset (clear) all flip-flops simultaneously.
• Std., A, and C speed 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.)
The register is fully edge-triggered. The state of each D
input, one set-up time before the LOW-to-HIGH clock
transition, is transferred to the corresponding flip-flop’s O
output.
• High drive outputs (-15mA IOH, 48mA IOL)
• Meets or exceeds JEDEC standard 18 specifications
• Product available in Radiation Tolerant and Radiation
Enhanced versions
All outputs will be forced LOW independently of Clock or
Data inputs by a LOW voltage level on the MR input. The
device is useful for applications where the true output only is
required and the Clock and Master Reset are common to all
storage elements.
• Military product compliant to MIL-STD-883, Class B
and DESC listed (dual marked)
• Available in DIP, SOIC, QSOP, CERPACK and LCC
packages
FUNCTIONAL BLOCK DIAGRAM
D
0
D
1
D
2
D3
D4
D
5
D
6
D7
CP
D
Q
D
Q
D
Q
D
Q
D
Q
D
Q
D
Q
D
Q
CP
CP
CP
CP
CP
CP
CP
CP
R
D
R
D
RD
RD
R
D
R
D
RD
RD
MR
O
0
O
1
O2
O
3
O
4
O
5
O6
O7
2568 drw 03
PIN CONFIGURATIONS
INDEX
1
20
19
18
17
16
15
14
13
12
11
VCC
O7
D7
MR
O0
2
3
4
3
2
20 19
D0
D1
P20-1
D20-1
SO20-2
SO20-8
&
1
D
1
4
18
D7
D6
O
1
2
5
6
7
8
17
16
15
14
D
6
O1
O2
D2
D3
5
O6
O5
O
O
6
5
L20-2
6
D
2
3
O
7
D5
D4
E20-1
D
D5
8
9 10 11 12 13
9
O3
GND
O4
10
CP
2568 drw 01
2568 drw 02
DIP/SOIC/QSOP/CERPACK
TOP VIEW
LCC
TOP VIEW
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
APRIL 1995
1995 Integrated Device Technology, Inc.
6.10
DSC-4209/3
1