FAST CMOS OCTAL D
REGISTERS (3-STATE)
Integrated Device Technology, Inc.
IDT54/74FCT374T/AT/CT/DT - 2374T/AT/CT
IDT54/74FCT534T/AT/CT
IDT54/74FCT574T/AT/CT/DT - 2574T/AT/CT
FEATURES:
• Common features:
– Low input and output leakage
≤1µA
(max.)
– CMOS power levels
– True TTL input and output compatibility
– V
OH
= 3.3V (typ.)
– V
OL
= 0.3V (typ.)
– Meets or exceeds JEDEC standard 18 specifications
– Product available in Radiation Tolerant and Radiation
Enhanced versions
– Military product compliant to MIL-STD-883, Class B
and DESC listed (dual marked)
– Available in DIP, SOIC, SSOP, QSOP, CERPACK
and LCC packages
• Features for FCT374T/FCT534T/FCT574T:
– Std., A, C and D speed grades
– High drive outputs (-15mA I
OH
, 48mA I
OL
)
• Features for FCT2374T/FCT2574T:
– Std., A, and C speed grades
– Resistor outputs (-15mA I
OH
, 12mA I
OL
Com.)
(-12mA I
OH
, 12mA I
OL
Mil.)
– Reduced system switching noise
DESCRIPTION
The FCT374T/FCT2374T, FCT534T and FCT574T/
FCT2574T are 8-bit registers built using an advanced dual
metal CMOS technology. These registers consist of eight D-
type flip-flops with a buffered common clock and buffered 3-
state output control. When the output enable (
OE
) input is
LOW, the eight outputs are enabled. When the
OE
input is
HIGH, the outputs are in the high-impedance state.
Input data meeting the set-up and hold time requirements
of the D inputs is transferred to the Q outputs on the LOW-to-
HIGH transition of the clock input.
The FCT2374T and FCT2574T have 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 FCT374/FCT2374T AND FCT574/FCT2574T
D
0
CP
CP D
Q
CP D
Q
CP
D
Q
CP
D
Q
CP
D
Q
CP
D
Q
CP
D
Q
CP
D
Q
D
1
D
2
D
3
D
4
D
5
D
6
D
7
OE
Q
0
Q
1
Q
2
Q
3
Q
4
Q
5
Q
6
Q
7
2569 drw 01
FUNCTIONAL BLOCK DIAGRAM FCT534T
D
0
CP
CP
D
Q
CP
D
Q
CP
D
Q
CP
D
Q
CP
D
Q
CP
D
Q
CP
D
Q
CP
D
Q
D
1
D
2
D
3
D
4
D
5
D
6
D
7
OE
Q
0
Q
1
Q
2
Q
3
Q
4
Q
5
Q
6
Q
7
2569 drw 02
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1995
Integrated Device Technology, Inc.
AUGUST 1995
DSC-4214/5
6.13
1
IDT54/74FCT374T/AT/CT/DT - 2374T/AT/CT, IDT54/74FCT534T/AT/CT, IDT54/74FCT574T/AT/CT/DT - 2574T/AT/CT
FAST CMOS OCTAL D REGISTERS (3-STATE)
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN CONFIGURATIONS
IDT54/74FCT374T
1
2
3
4
5
6
7
8
9
10
20
19
P20-1
D20-1
SO20-2
SO20-7
SO20-8
&
E20-1
18
17
16
15
14
13
12
11
V
CC
Q
7
D
7
D
6
Q
6
Q
5
D
5
D
4
Q
4
CP
OE
Q
0
D
0
D
1
Q
1
Q
2
D
2
D
3
Q
3
GND
3
D
1
Q
1
Q
2
D
2
D
3
4
5
6
7
8
Q
0
OE
2
1
D
0
INDEX
V
CC
Q
7
20 19
18
17
16
15
D
7
D
6
Q
6
Q
5
D
5
L20-2
14
9 10 11 12 13
GND
CP
Q
3
Q
4
D
4
2569 drw 03
DIP/SOIC/SSOP/QSOP/CERPACK
TOP VIEW
LCC
TOP VIEW
IDT54/74FCT574T
V
CC
OE
1
INDEX
D
1
D
0
OE
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
GND
1
2
3
4
5
6
7
8
9
10
20
19
P20-1
D20-1
SO20-2
SO20-7
SO20-8
&
E20-1
18
17
16
15
14
13
12
11
V
CC
Q
0
Q
1
Q
2
Q
3
Q
4
Q
5
Q
6
Q
7
CP
3 2
D
2
D
3
D
4
D
5
D
6
4
5
6
7
8
20 19
18
17
16
15
14
Q
0
Q
1
Q
2
Q
3
Q
4
Q
5
L20-2
9 10 11 12 13
D
7
GND
CP
Q
7
Q
6
DIP/SOIC/SSOP/QSOP/CERPACK
TOP VIEW
2569 drw 04
LCC
TOP VIEW
IDT54/74FCT534T
Q
0
OE
1
OE
Q
0
D
0
D
1
Q
1
Q
2
D
2
D
3
Q
3
GND
1
2
3
4
5
6
7
8
9
10
P20-1
D20-1
SO20-2
SO20-8
&
E20-1
20
19
18
17
16
15
14
13
12
11
V
CC
Q
7
D
7
D
6
Q
6
Q
5
D
5
D
4
GND
3 2
D
1
Q
1
Q
2
D
2
D
3
4
5
6
7
8
L20-2
20 19
18
17
16
15
14
9 10 11 12 13
D
7
D
6
Q
6
Q
5
D
5
D
0
INDEX
Q
4
CP
CP
Q
4
D
4
Q
3
V
CC
Q
7
2569 drw 05
DIP/SOIC/QSOP/CERPACK
TOP VIEW
LCC
TOP VIEW
6.13
2
IDT54/74FCT374T/AT/CT/DT - 2374T/AT/CT, IDT54/74FCT534T/AT/CT, IDT54/74FCT574T/AT/CT/DT - 2574T/AT/CT
FAST CMOS OCTAL D REGISTERS (3-STATE)
MILITARY AND COMMERCIAL TEMPERATURE RANGES
PIN DESCRIPTION
Pin Names
D
N
CP
Q
N
Description
D flip-flop data inputs
Clock Pulse for the register. Enters data on
LOW-to-HIGH transition.
3-state outputs, (true)
3-state outputs, (inverted)
Active LOW 3-state Output Enable input
2569 tbl 01
Q
N
OE
FUNCTION TABLE
(1)
534
Inputs
Function
HI-Z
LOAD REGISTER
Outputs
D
N
X
X
L
H
L
H
Internal
Q
N
NC
NC
L
H
L
H
374/574
Outputs
Internal
Q
N
Z
Z
L
H
Z
Z
OE
H
H
L
L
H
H
CP
L
H
Q
N
Z
Z
H
L
Z
Z
Q
N
NC
NC
H
L
H
L
2569 tbl 02
↑
↑
↑
↑
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High Impedance
NC = No Change
↑
= LOW-to-HIGH transition
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
Rating
Commercial
V
TERM(2)
Terminal Voltage
–0.5 to +7.0
with Respect to
GND
V
TERM(3)
Terminal Voltage
–0.5 to
with Respect to
V
CC
+0.5
GND
T
A
Operating
0 to +70
Temperature
T
BIAS
Temperature
–55 to +125
Under Bias
T
STG
Storage
–55 to +125
Temperature
P
T
Power Dissipation
0.5
I
OUT
DC Output
Current
–60 to +120
Military
–0.5 to +7.0
Unit
V
CAPACITANCE
(T
A
= +25°C, f = 1.0MHz)
Symbol
Parameter
(1)
C
IN
Input
Capacitance
C
OUT
Output
Capacitance
Conditions
V
IN
= 0V
V
OUT
= 0V
Typ.
6
8
Max. Unit
10
pF
12
pF
2569 lnk 04
–0.5 to
V
CC
+0.5
–55 to +125
–65 to +135
–65 to +150
0.5
–60 to +120
V
°C
°C
°C
W
mA
NOTE:
1. This parameter is measured at characterization but not tested.
2569 lnk 03
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RAT-
INGS 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 maximum rating conditions for
extended periods may affect reliability. No terminal voltage may exceed
V
CC
by +0.5V unless otherwise noted.
2. Input and V
CC
terminals only.
3. Outputs and I/O terminals only.
6.13
3
IDT54/74FCT374T/AT/CT/DT - 2374T/AT/CT, IDT54/74FCT534T/AT/CT, IDT54/74FCT574T/AT/CT/DT - 2574T/AT/CT
FAST CMOS OCTAL D REGISTERS (3-STATE)
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Commercial: T
A
= 0°C to +70°C, V
CC
= 5.0V
±
5%; Military: T
A
= –55°C to +125°C, V
CC
= 5.0V
±
10%
Symbol
V
IH
V
IL
I
I H
I
I L
I
OZH
I
OZL
I
I
V
IK
V
H
I
CC
Parameter
Input HIGH Level
Input LOW Level
Input HIGH Current
(4)
Input LOW Current
(4)
High Impedance Output Current
(3-State Output pins)
(4)
Input HIGH Current
(4)
Clamp Diode Voltage
Input Hysteresis
Quiescent Power Supply Current
V
CC
= Min., I
IN
= –18mA
—
Test Conditions
(1)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
CC
= Max.
V
CC
= Max.
V
I
= 2.7V
V
I
= 0.5V
V
O
= 2.7V
V
O
= 0.5V
V
CC
= Max., V
I
= V
CC
(Max.)
Min.
2.0
—
—
—
—
—
—
—
—
—
Typ.
(2)
—
—
—
—
—
—
—
–0.7
200
0.01
Max.
—
0.8
Unit
V
V
±
1
±
1
±
1
±
1
±
1
–1.2
—
1
µ
A
µ
A
µ
A
V
mV
mA
2569 lnk 05
V
CC
= Max., V
IN
= GND or V
CC
OUTPUT DRIVE CHARACTERISTICS FOR FCT374T/534T/574T
Symbol
V
OH
Parameter
Output HIGH Voltage
Test Conditions
(1)
V
CC
= Min.
I
OH
= –6mA MIL.
V
IN
= V
IH
or V
IL
I
OH
= –8mA COM'L.
I
OH
= –12mA MIL.
I
OH
= –15mA COM'L.
V
CC
= Min.
I
OL
= 32mA MIL.
V
IN
= V
IH
or V
IL
I
OL
= 48mA COM'L.
V
CC
= Max., V
O
= GND
(3)
Min.
2.4
2.0
—
–60
Typ.
(2)
3.3
3.0
0.3
–120
Max.
—
—
0.5
–225
Unit
V
V
V
mA
2569 lnk 06
V
OL
I
OS
Output LOW Voltage
Short Circuit Current
OUTPUT DRIVE CHARACTERISTICS FOR FCT2374T/2574T
Symbol
I
ODL
I
ODH
V
OH
V
OL
Parameter
Output LOW Current
Output HIGH Current
Output HIGH Voltage
Output LOW Voltage
Test Conditions
(1)
V
CC
= 5V, V
IN
= V
IH
or V
IL,
V
OUT
= 1.5V
(3)
V
CC
= 5V, V
IN
= V
IH
or V
IL,
V
OUT
= 1.5V
(3)
V
CC
= Min.
V
IN
= V
IH
or V
IL
V
CC
= Min.
V
IN
= V
IH
or V
IL
I
OH
= –12mA MIL.
I
OH
= –15mA COM'L.
I
OL
= 12mA
Min.
16
–16
2.4
—
Typ.
(2)
48
–48
3.3
0.3
Max.
—
—
—
0.50
Unit
mA
mA
V
V
2569 lnk 07
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at Vcc = 5.0V, +25°C ambient.
3. Not more than one output should be shorted at one time. Duration of the short circuit test should not exceed one second.
4. The test limit for this parameter is
±5µA
at T
A
= –55°C.
6.13
4
IDT54/74FCT374T/AT/CT/DT - 2374T/AT/CT, IDT54/74FCT534T/AT/CT, IDT54/74FCT574T/AT/CT/DT - 2574T/AT/CT
FAST CMOS OCTAL D REGISTERS (3-STATE)
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
Symbol
∆I
CC
I
CCD
Parameter
Quiescent Power Supply Current
TTL Inputs HIGH
Dynamic Power Supply
Current
(4)
Test Conditions
(1)
V
CC
= Max.
V
IN
= 3.4V
(3)
V
CC
= Max.
Outputs Open
OE
= GND
One Input Toggling
50% Duty Cycle
V
CC
= Max.
Outputs Open
f
CP
= 10MHz
50% Duty Cycle
OE
= GND
fi = 5MHz
50% Duty Cycle
One Bit Toggling
V
CC
= Max.
Outputs Open
f
CP
= 10MHz
50% Duty Cycle
OE
= GND
Eight Bits Toggling
fi = 2.5MHz
50% Duty Cycle
Min.
—
—
—
Typ.
(2)
0.5
0.15
0.06
Max.
2.0
0.25
0.12
Unit
mA
mA/
MHz
V
IN
= V
CC
FCTxxxT
V
IN
= GND
FCT2xxxT
I
C
Total Power Supply Current
(6)
V
IN
= V
CC
FCTxxxT
V
IN
= GND
FCT2xxxT
FCTxxxT
V
IN
= 3.4
V
IN
= GND
FCT2xxxT
V
IN
= V
CC
FCTxxxT
V
IN
= GND
FCT2xxxT
FCTxxxT
V
IN
= 3.4
V
IN
= GND
FCT2xxxT
—
—
—
1.5
0.6
2.0
1.1
3.5
2.2
5.5
4.2
7.3
(5)
4.0
(5)
16.3
(5)
13.0
(
5)
mA
—
—
—
—
3.8
1.5
6.0
3.8
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 5.0V, +25°C ambient.
3. Per TTL driven input (V
IN
= 3.4V). All other inputs at V
CC
or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. Values for these conditions are examples of the I
CC
formula. These limits are guaranteed but not tested.
6. I
C
= I
QUIESCENT
+ I
INPUTS
+ I
DYNAMIC
I
C
= I
CC
+
∆I
CC
D
H
N
T
+ I
CCD
(f
CP/
2 + f
i
N
i
)
I
CC
= Quiescent Current
∆I
CC
= Power Supply Current for a TTL High Input (V
IN
= 3.4V)
D
H
= Duty Cycle for TTL Inputs High
N
T
= Number of TTL Inputs at D
H
I
CCD
= Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
f
CP
= Clock Frequency for Register Devices (Zero for Non-Register Devices)
f
i
= Input Frequency
N
i
= Number of Inputs at f
i
All currents are in milliamps and all frequencies are in megahertz.
2569 tbl 08
6.13
5
