8-Bit Registers
CY54/74FCT374T
CY54/74FCT574T
SCCS022 - May 1994 - Revised February 2000
Data sheet acquired from Cypress Semiconductor Corporation.
Data sheet modified to remove devices not offered.
Copyright
2000, Texas Instruments Incorporated
Features
Function, pinout, and drive compatible with FCT and
F logic
FCT-C speed at 5.2 ns max. (Com'l)
FCT-A speed at 6.5 ns max. (Com'l)
Reduced V
OH
(typically = 3.3V) versions of equivalent
FCT functions
Edge-rate control circuitry for significantly improved
noise characteristics
Power-off disable feature
Matched rise and fall times
Fully compatible with TTL input and output logic levels
ESD > 2000V
Extended commercial range of
-
40C to +85C
Sink Current
64 mA (Com'l), 32 mA (Mil)
Source Current
32 mA (Com'l), 12 mA (Mil)
Edge-triggered D-type inputs
250 MHz typical toggle rate
1CY54/74FCT574T
Logic Block Diagram
Pin Configurations
FCT374T1
4
8
9
10
11
12
7 6 5
1516 17 18
3
2
1
20
13
14
19
D
3
D
2
O
1
D
6
D
5
D
7
CP
V
CC
GND
O
5
Top View
D
1
LCC
OE
O
0
D
0
O
3
D
4
O
4
1
2
3
4
5
6
7
8
9
10
11
12
16
17
18
19
20
13
14
V
CC
FCT374T2
15
DIP/SOIC/QSOP
Top View
O
6
O
2
O
7
O
0
D
0
D
1
O
2
D
2
D
3
O
3
D
7
D
6
O
6
O
5
D
5
D
4
O
4
CP
OE
GND
O
7
O
1
FCT374T3
4
8
9
10
11
12
7 6 5
1516 17 18
3
2
1
20
13
14
19
D
6
D
5
D
3
O
2
O
5
O
1
CP
V
CC
GND
O
4
Top View
D
2
LCC
OE
D
0
D
1
D
7
O
6
O
7
1
2
3
4
5
6
7
8
9
10
11
12
16
17
18
19
20
13
14
V
CC
FCT374T4
15
DIP/SOIC/QSOP
Top View
O
3
D
4
O
0
D
0
D
1
D
2
D
4
D
5
D
6
D
7
O
1
O
2
O
3
O
4
O
5
O
6
O
7
CP
OE
GND
O
0
D
3
FCT374T
FCT374T5
CP
OE
D
0
O
0
D
1
O
1
D
2
O
2
D
3
O
3
D
4
O
4
D
5
O
5
D
6
O
6
D
7
O
7
FCT374T6
CP
D
O
0
D
0
CP
OE
CP
D
O
1
D
1
CP
D
O
2
D
2
CP
D
O
3
D
3
CP
D
O
4
D
4
CP
D
O
5
D
5
CP
D
O
6
D
6
CP
D
O
7
D
7
Q
Q
Q
Q
Q
Q
Q
Q
Logic Symbol
FCT374T
FCT574T
FCT574T
CY54/74FCT374T
CY54/74FCT574T
2
Functional Description
The FCT374T and FCT574T are high-speed low-power octal
D-type flip-flops featuring separate D-type inputs for each
flip-flop. Both devices have three-state outputs for bus oriented
applications. A buffered clock (CP) and output enable (OE) are
common to all flip-flops. The FCT574T is identical to FCT374T
except for flow-through pinout to simplify board design. The
eight flip-flops contained in the FCT374T and FCT574T will
store the state of their individual D inputs that meet the set-up
and hold time requirements on the LOW-to-HIGH clock (CP)
transition. When OE is LOW, the contents of the eight flip-flops
are available at the outputs. When OE is HIGH, the outputs will
be in the high-impedance state. The state of output enable
does not affect the state of the flip-flops.
The outputs are designed with a power-off disable feature to
allow for live insertion of boards.
Maximum Ratings
[2, 3]
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Storage Temperature .................................. -65
C to +150
C
Ambient Temperature with
Power Applied............................................. 65
C to +135
C
Supply Voltage to Ground Potential ............... 0.5V to +7.0V
DC Input Voltage ........................................... 0.5V to +7.0V
DC Output Voltage......................................... 0.5V to +7.0V
DC Output Current (Maximum Sink Current/Pin) ...... 120 mA
Power Dissipation .......................................................... 0.5W
Static Discharge Voltage............................................>2001V
(per MIL-STD-883, Method 3015)
Function Table
[1]
Inputs
Outputs
D
CP
OE
O
H
L
H
L
L
L
X
X
H
Z
Operating Range
Range
Range
Ambient
Temperature
V
CC
Commercial
T, AT, CT
40
C to +85
C
5V
5%
Military
[4]
All
55
C to +125
C
5V
10%
Electrical Characteristics
Over the Operating Range
Parameter
Description
Test Conditions
Min.
Typ.
[5]
Max.
Unit
V
OH
Output HIGH Voltage
V
CC
=Min., I
OH
=32 mA
Com'l
2.0
V
V
CC
=Min., I
OH
=15 mA
Com'l
2.4
3.3
V
V
CC
=Min., I
OH
=12 mA
Mil
2.4
3.3
V
V
OL
Output LOW Voltage
V
CC
=Min., I
OL
=64 mA
Com'l
0.3
0.55
V
V
CC
=Min., I
OL
=32 mA
Mil
0.3
0.55
V
V
IH
Input HIGH Voltage
2.0
V
V
IL
Input LOW Voltage
0.8
V
V
H
Hysteresis
[6]
All inputs
0.2
V
V
IK
Input Clamp Diode Voltage
V
CC
=Min., I
IN
=18 mA
0.7
1.2
V
I
I
Input HIGH Current
V
CC
=Max., V
IN
=V
CC
5
A
I
IH
Input HIGH Current
V
CC
=Max., V
IN
=2.7V
1
A
I
IL
Input LOW Current
V
CC
=Max., V
IN
=0.5V
1
A
I
OZH
Off State HIGH-Level Output
Current
V
CC
= Max., V
OUT
= 2.7V
10
A
I
OZL
Off State LOW-Level
Output Current
V
CC
= Max., V
OUT
= 0.5V
10
A
I
OS
Output Short Circuit Current
[7]
V
CC
=Max., V
OUT
=0.0V
60
120
225
mA
I
OFF
Power-Off Disable
V
CC
=0V, V
OUT
=4.5V
1
A
Notes:
1.
H = HIGH Voltage Level. L = LOW Voltage Level X = Don't Care Z = HIGH Impedance = LOW-to-HIGH clock transition
2.
Unless otherwise noted, these limits are over the operating free-air temperature range.
3.
Unused inputs must always be connected to an appropriate logic voltage level, preferably either V
CC
or ground.
4.
T
A
is the "instant on" case temperature.
5.
Typical values are at V
CC
=5.0V, T
A
=+25C ambient.
6.
This parameter is specified but not tested.
7.
Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus and/or sample
and hold techniques are preferable in order to minimize internal chip heating and more accurately reflect operational values. Otherwise prolonged shorting of
a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parameters tests. In any sequence of parameter
tests, I
OS
tests should be performed last.
CY54/74FCT374T
CY54/74FCT574T
3
Capacitance
[2]
Parameter
Description
Typ.
[5]
Max.
Unit
C
IN
Input Capacitance
5
10
pF
C
OUT
Output Capacitance
9
12
pF
Power Supply Characteristics
Parameter
Description
Test Conditions
Typ.
[5]
Max.
Unit
I
CC
Quiescent Power Supply Current
V
CC
=Max., V
IN
0.2V, V
IN
V
CC
0.2V
0.1
0.2
mA
I
CC
Quiescent Power Supply Current
(TTL inputs HIGH)
V
CC
=Max., V
IN
=3.4V,
[8]
f
1
=0, Outputs Open
0.5
2.0
mA
I
CCD
Dynamic Power Supply Current
[9]
V
CC
=Max., One Bit Toggling,
50% Duty Cycle, Outputs Open,
OE=GND, V
IN
0.2V or V
IN
V
CC
0.2V
0.06
0.12
mA/MHz
I
C
Total Power Supply Current
[10]
V
CC
=Max., f
0
=10 MHz,
50% Duty Cycle, Outputs Open,
One Bit Toggling at f
1
=5 MHz,
OE=GND, V
IN
0.2V or V
IN
V
CC
0.2V
0.7
1.4
mA
V
CC
=Max., f
0
=10 MHz,
50% Duty Cycle, Outputs Open,
One Bit Toggling at f
1
=5 MHz,
OE=GND, V
IN
=3.4V or V
IN
=GND
1.2
3.4
mA
V
CC
=Max., f
0
=10 MHz,
50% Duty Cycle, Outputs Open,
Eight Bits Toggling at f
1
=2.5 MHz,
OE=GND, V
IN
0.2V or V
IN
V
CC
0.2V
1.6
3.2
[11]
mA
V
CC
=Max., f
0
=10 MHz,
50% Duty Cycle, Outputs Open,
Eight Bits Toggling at f
1
=2.5 MHz,
OE=GND, V
IN
=3.4V or V
IN
=GND
3.9
12.2
[11]
mA
Notes:
8.
Per TTL driven input (V
IN
=3.4V); all other inputs at V
CC
or GND.
9.
This parameter is not directly testable, but is derived for use in Total Power Supply calculations.
10. I
C
=
I
QUIESCENT
+ I
INPUTS
+ I
DYNAMIC
I
C
=
I
CC
+
I
CC
D
H
N
T
+I
CCD
(f
0
/2 + f
1
N
1
)
I
CC
=
Quiescent Current with CMOS input levels
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
0
=
Clock frequency for registered devices, otherwise zero
f
1
=
Input signal frequency
N
1
=
Number of inputs changing at f
1
All currents are in milliamps and all frequencies are in megahertz.
11. Values for these conditions are examples of the I
CC
formula. These limits are specified but not tested.
CY54/74FCT374T
CY54/74FCT574T
4
Switching Characteristics
[12]
Over the Operating Range
Parameter
Description
FCT374T/FCT574T
FCT374AT/FCT574AT
Unit
Fig.
No.
[13]
Military
Commercial
Military
Commercial
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
t
PLH
t
PHL
Propagation Delay
Clock to Output
2.0
11.0
2.0
10.0
2.0
7.2
2.0
6.5
ns
1, 5
t
PZH
t
PZL
Output Enable Time
1.5
14.0
1.5
12.5
1.5
7.5
1.5
6.5
ns
1, 7, 8
t
PHZ
t
PLZ
Output Disable
Time
1.5
8.0
1.5
8.0
1.5
6.5
1.5
5.5
ns
1, 7, 8
t
S
SetUp Time
HIGH or LOW
D to CP
2.0
2.0
2.0
2.0
ns
4
t
H
Hold Time
HIGH or LOW
D to CP
1.5
1.5
1.5
1.5
ns
4
t
W
Clock Pulse
Width
[14]
HIGH or
LOW
7.0
7.0
6.0
5.0
ns
5
Parameter
Description
FCT374CT/FCT574CT
Unit
Fig.
No.
[13]
Military
Commercial
Min.
Max.
Min.
Max.
t
PLH
t
PHL
Propagation Delay Clock to Output
2.0
6.2
2.0
5.2
ns
1, 5
t
PZH
t
PZL
Output Enable Time
1.5
6.2
1.5
5.5
ns
1, 7, 8
t
PHZ
t
PLZ
Output Disable Time
1.5
5.7
1.5
5.0
ns
1, 7, 8
t
S
Set-Up Time, HIGH or LOW D to CP
2.0
2.0
ns
4
t
H
Hold Time, HIGH or LOW D to CP
1.5
1.5
ns
4
t
W
Clock Pulse Width
[14]
HIGH or LOW
6.0
5.0
ns
5
Notes:
12. Minimum limits are specified but not tested on Propagation Delays.
13. See "Parameter Measurement Information" in the General Information section.
14. With one data channel toggling, t
W
(L)=t
W
(H)=4.0 ns and t
r
=t
f
=1.0 ns.
CY54/74FCT374T
CY54/74FCT574T
5
Ordering Information--FCT374T
Speed
(ns)
Ordering Code
Package
Name
Package Type
Operating
Range
5.2
CY74FCT374CTQCT
Q5
20-Lead (150-Mil) QSOP
Commercial
CY74FCT374CTSOC/SOCT
S5
20-Lead (300-Mil) Molded SOIC
6.2
CY54FCT374CTDMB
D6
20-Lead (300-Mil) CerDIP
Military
CY54FCT374CTLMB
L61
20-Pin Square Leadless Chip Carrier
6.5
CY74FCT374ATPC
P5
20-Lead (300-Mil) Molded DIP
Commercial
CY74FCT374ATQCT
Q5
20-Lead (150-Mil) QSOP
CY74FCT374ATSOC/SOCT
S5
20-Lead (300-Mil) Molded SOIC
7.2
CY54FCT374ATLMB
L61
20-Pin Square Leadless Chip Carrier
Military
CY54FCT374ATDMB
D6
20-Lead (300-Mil) CerDIP
10.0
CY74FCT374TQCT
Q5
20-Lead (150-Mil) QSOP
Commercial
CY74FCT374TSOC/SOCT
S5
20-Lead (300-Mil) Molded SOIC
11.0
CY54FCT374TDMB
D6
20-Lead (300-Mil) CerDIP
Military
CY54FCT374TLMB
L61
20-Pin Square Leadless Chip Carrier
Ordering Information--FCT574T
Speed
(ns)
Ordering Code
Package
Name
Package Type
Operating
Range
5.2
CY74FCT574CTQCT
Q5
20-Lead (150-Mil) QSOP
Commercial
CY74FCT574CTSOC/SOCT
S5
20-Lead (300-Mil) Molded SOIC
6.2
CY54FCT574CTDMB
D6
20-Lead (300-Mil) CerDIP
Military
6.5
CY74FCT574ATQCT
Q5
20-Lead (150-Mil) QSOP
Commercial
CY74FCT574ATSOC/SOCT
S5
20-Lead (300-Mil) Molded SOIC
7.2
CY54FCT574ATDMB
D6
20-Lead (300-Mil) CerDIP
Military
CY54FCT574ATLMB
L61
20-Pin Square Leadless Chip Carrier
10.0
CY74FCT574TQCT
Q5
20-Lead (150-Mil) QSOP
Commercial
CY74FCT574TSOC/SOCT
S5
20-Lead (300-Mil) Molded SOIC
Document #: 38-00278-B
PDF 
ZIP