![](http://datasheet.mmic.net.cn/330000/IDT54FCT821ADSO_datasheet_16402511/IDT54FCT821ADSO_2.png)
MILITARY AND COMMERCIAL TEMPERATURE RANGES
2
IDT54/74FCT821/A/B
HIGH PERFORMANCE CMOS BUS INTERFACE REGISTER
PIN CONFIGURATION
Symbol
V
TERM
(2)
Rating
Commercial
–0.5 to +7
Military
–0.5 to +7
Unit
V
Termnal Voltage
with Respect to GND
Termnal Voltage
with Respect to GND
Operating Temperature
Temperature Under Bias
Storage Temperature
Power Dissipation
DC Output Current
V
TERM
(3)
–0.5 to V
CC
–0.5 to V
CC
V
T
A
T
BIAS
T
STG
P
T
I
OUT
0 to +70
–55 to +125
–55 to +125
0.5
120
–55 to +125
–65 to +135
–65 to +150
0.5
120
°C
°C
°C
W
mA
ABSOLUTE MAX IMUM RATINGS
(1)
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUMRATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximumrating
conditions for extended periods may affect reliability. No termnal voltage may exceed
Vcc by +0.5V unless otherwise noted.
2. Inputs and Vcc termnals only.
3. Outputs and I/O termnals only.
Pin Name
Dx
CP
I/O
I
I
Description
D Flip-Flop Data Inputs
Clock Pulse for the Register. Enters data into the
register on the LOW-to-HIGH transition
Register 3-State Outputs
Output Control. When the
OE
input is HIGH, the Yx
outputs are in the high impedance state. When the
OE
input is LOW, the TRUE register data is present
at the Yx outputs.
Yx
OE
O
I
PIN DESCRIPTION
Symbol
C
IN
C
OUT
Parameter
(1)
Input Capacitance
Output Capacitance
Conditions
V
IN
= 0V
V
OUT
= 0V
Typ.
6
8
Max.
10
12
Unit
pF
pF
CAPACITANCE
(T
A
= +25°C, F = 1.0MHz)
NOTE:
1. This parameter is measured at characterization but not tested.
CERDIP/ SOIC
TOP VIEW
LCC
TOP VIEW
LOGIC SY MBOL
CP
D
OE
Q
D
CP
Y
10
10
2
3
1
20
19
18
15
16
9
10
D
6
D
7
D
2
D
5
D
3
D
4
D
8
23
22
24
21
17
5
6
7
4
8
D
0
V
CC
CP
OE
13
14
11
12
D
1
GND
D
9
Y
6
Y
7
Y
2
Y
5
Y
3
Y
4
Y
8
Y
0
Y
1
Y
9
1
5
1
6
N
12
1
3
1
4
G
D
8
1
7
1
8
C
Y
9
Y
8
N
V
C
O
D
1
D
0
Y
0
Y
1
Y
3
Y
4
NC
Y
5
5
6
8
7
9
10
11
1
2
8
4
3
2
2
7
2
625
24
22
23
21
20
1
9
D
5
D
6
NC
D
3
D
4
D
2
D
7
INDEX
D
9
Y
2
Y
7
Y
6