1
PS2016C 10/01/04
Description:
Pericom Semiconductor's PI74FCT374T/574T are 8-bit wide octal
registers designed with eight D-type flip-flops with a buffered
common clock and buffered 3-state outputs. When output enable
(OE) is LOW, the outputs are enabled. When OE is HIGH, the outputs
are in the high impedance state. Input data meeting the setup and
hold time requirements of the D inputs is transferred to the O outputs
on the LOW-to-HIGH transition of the clock input. Device models
available upon request.
Block Diagram
Features:
Pin compatible with bipolar FASTTM Series at a higher speed
and lower power consumption
TTL input and output levels
Low ground bounce outputs
Extremely low static power
Hysteresis on all inputs
Industrial operating temperature range: 40C to +85C
Packaging (Pb-free & Green available):
20-pin 173-mil wide plastic TSSOP (L)
20-pin 150-mil wide plastic QSOP (Q)
20-pin 150-mil wide plastic TQSOP (R)
20-pin 209-mil wide plastic SSOP (H)
20-pin 300-mil wide plastic SOIC (S)
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Fast CMOS Octal D Registers (3-State)
PI74FCT374T
PI74FCT574T
D
Q
D
0
O
0
CP
CP
OE
D
Q
D
1
O
1
CP
D
Q
D
2
O
2
CP
D
Q
D
3
O
3
CP
D
Q
D
4
O
4
CP
D
Q
D
5
O
5
CP
D
Q
D
6
O
6
CP
D
Q
D
7
O
7
CP
PI74FCT374 Pin Configuration
PI74FCT574 Pin Configuration
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE
O
0
D
0
D
1
O
1
O
2
D
2
D
3
O
3
GND
Vcc
O
7
D
7
D
6
O
6
O
5
D
5
D
4
O
4
CP
20-PIN
L20
H20
Q20
S20
20-PIN
L20
Q20
S20
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
GND
Vcc
O
0
O
1
O
2
O
3
O
4
O
5
O
6
O
7
CP
2
PS2016C 10/01/04
PI74FCT374T
PI74FCT574T
Octal D Registers (3-State)
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Pin Description
Inputs
Outputs Internal
Function
OE
CP
D
N
O
N
Q
N
High-Z
H
L
X
Z
NC
H
H
X
Z
NC
Load Register
L
L
L
H
L
H
H
L
H
L
Z
H
H
H
Z
L
Truth Table
(1)
1.
H = High Voltage Level
L = Low Voltage Level
X = Don't Care
Z = High Impedance
NC = No Change
= LOW-to-HIGH transition
Pin Name
Description
OE
Output Enable Input (Active LOW)
CP
Clock Pulse for the register. Enters data on
LOW-to-HIGH transition
D
0
-D
7
Data Inputs
O
0
-O
7
3-State Outputs (true)
O
0
-O
7
3-State Outputs (inverted)
GND
Ground
V
CC
Power
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ................................................................. 65C to +150C
Ambient Temperature with Power Applied ................................. -40C to +85C
Supply Voltage to Ground Potential (Inputs & Vcc Only) .......... 0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) ....... 0.5V to +7.0V
DC Input Voltage ......................................................................... 0.5V to +7.0V
DC Output Current ................................................................................... 120 mA
Power Dissipation ......................................................................................... 0.5W
Note:
Stresses greater than those listed under MAXI-
MUM RATINGS 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.
3
PS2016C 10/01/04
PI74FCT374T
PI74FCT574T
Octal D Registers (3-State)
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DC Electrical Characteristics
(Over the Operating Range, T
A
= 40C to +85C, V
CC
= 5.0V 5%)
Parameters Description
Test Conditions
(1)
Min. Typ
(2)
Max. Units
V
OH
Output HIGH Voltage V
CC
= Min., V
IN
= V
IH
or V
IL
I
OH
= 15.0 mA
2.4
3.0
V
V
OL
Output LOW Current
V
CC
= Min., V
IN
= V
IH
or V
IL
I
OL
= 64 mA
0.3
0.55
V
V
OL
Output LOW Current
V
CC
= Min., V
IN
= V
IH
or V
IL
I
OL
= 12 mA (25
Series)
0.3
0.50
V
V
IH
Input HIGH Voltage
Guaranteed Logic HIGH Level
2.0
V
V
IL
Input LOW Voltage
Guaranteed Logic LOW Level
0.8
V
I
IH
Input HIGH Current
V
CC
= Max.
V
IN
= V
CC
1
A
I
IL
Input LOW Current
V
CC
= Max.
V
IN
= GND
1
A
I
OZH
High Impedance
V
CC
= M
AX
.
V
OUT
= 2.7V
1
A
I
OZL
Output Current
V
OUT
= 0.5V
1
A
V
IK
Clamp Diode Voltage V
CC
= Min., I
IN
= 18 mA
0.7
1.2
V
I
OFF
Power Down Disable
V
CC
= GND, V
OUT
= 4.5V
--
--
100
A
I
OS
Short Circuit Current
V
CC
= Max.
(3)
, V
OUT
= GND
60
120
mA
V
H
Input Hysteresis
200
mV
Capacitance
(T
A
= 25C, f = 1 MHz)
Parameters
(4)
Description
Test Conditions
Typ
Max.
Units
C
IN
Input Capacitance
V
IN
= 0V
6
10
pF
C
OUT
Output Capacitance
V
OUT
= 0V
8
12
pF
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at Vcc = 5.0V, +25C ambient and maximum loading.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. This parameter is determined by device characterization but is not production tested.
4
PS2016C 10/01/04
PI74FCT374T
PI74FCT574T
Octal D Registers (3-State)
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Power Supply Characteristics
Parameters Description
Test Conditions
(1)
Min.
Typ
(2)
Max.
Units
I
CC
Quiescent Power
V
CC
= Max.
V
IN
= GND or V
CC
0.1
500
A
Supply Current
I
CC
Supply Current per
V
CC
= Max.
V
IN
= 3.4V
(3)
0.5
2.0
mA
Input @ TTL HIGH
I
CCD
Supply Current per
V
CC
= Max.,
V
IN
= V
CC
0.15
0.25
mA/
Input per MHz
(4)
Outputs Open
V
IN
= GND
MHz
OE = GND
One Input Toggling
50% Duty Cycle
I
C
Total Power Supply
V
CC
= Max.,
V
IN
= V
CC
1.5
3.5
(5)
mA
Current
(6)
Outputs Open
V
IN
= GND
f
CP
= 10 MH
Z
50% Duty Cycle
V
IN
= 3.4V
2.0
5.5
(5)
OE = GND
V
IN
= GND
f
I
= 5 MH
Z
One Bit Toggling
V
CC
= Max.,
V
IN
= V
CC
3.8
7.3
(5)
Outputs Open
V
IN
= GND
f
CP
= 10 MH
Z
50% Duty Cycle
V
IN
= 3.4V
6.0
16.3
(5)
OE = GND
V
IN
= GND
Eight Bits Toggling
f
I
= 2.5 MH
Z
50% Duty Cycle
Notes:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 5.0V, +25C ambient.
3. Per TTL driven input (V
IN
= 3.4V); all other inputs at Vcc 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 Icc 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
= 3.4 V)
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.
5
PS2016C 10/01/04
PI74FCT374T
PI74FCT574T
Octal D Registers (3-State)
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PI74FCT374T Switching Characteristics over Operating Range
374TT
374AT
374CT
374DT
Com.
Com.
Com.
Com.
Parameters
Description
Conditions
(1)
Min
Max
Min
Max
Min
Max
Min
Max Units
t
PLH
Propagation Delay
C
L
= 50pF
2.0
10.0
2.0
6.5
2.0
5.2
2.0
4.5
ns
t
PHL
CP to O
N
R
L
= 500
t
PZH
Output Enable Time
1.5
12.5
1.5
6.5
1.5
5.5
1.5
5.5
ns
t
PZL
OE to O
N
t
PHZ
Output Disable Time
(3)
1.5
8.0
1.5
5.5
1.5
5.0
1.5
5.0
ns
t
PLZ
OE to O
N
t
SU
Setup Time HIGH or
2.0
--
2.0
--
2.0
--
2.0
--
ns
LOW, D
N
to CP
t
H
Hold Time HIGH or
1.5
--
1.5
--
1.5
--
1.0
--
ns
LOW, D
N
to CP
t
W
CP Pulse Width
(3)
7.0
--
5.0
--
5.0
--
3.0
--
ns
HIGH or LOW
PI74FCT574T Switching Characteristics over Operating Range
574T
574AT
574T
574DT
Com.
Com.
Com.
Com.
Parameters
Description
Conditions
(1)
Min
Max
Min
Max
Min
Max
Min
Max
Unit
t
PLH
Propagation Delay
C
L
= 50 pF
2.0
8.5
2.0
6.5
2.0
5.2
2.0
4.5
ns
t
PHL
CP to O
N
R
L
= 500
t
PZH
Output Enable Time
1.5
10.0
1.5
6.5
1.5
5.5
1.5
5.5
ns
t
PZL
OE to O
N
t
PHZ
Output Disable Time
(3)
1.5
6.5
1.5
5.5
1.5
5.0
1.5
5.0
ns
t
PLZ
OE to O
N
t
SU
Setup Time HIGH or
2.0
--
2.0
--
2.0
--
2.0
--
ns
LOW, D
N
to CP
t
H
Hold Time HIGH or
1.5
--
1.5
--
1.5
--
1.0
--
ns
LOW, D
N
to CP
t
W
CP Pulse Width
(3)
7.0
--
5.0
--
5.0
--
3.0
--
ns
HIGH or LOW
Notes:
1. See test circuit and wave forms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. This parameter is guaranteed but not production tested.
6
PS2016C 10/01/04
PI74FCT374T
PI74FCT574T
Octal D Registers (3-State)
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Packaging Mechanical: 20-pin QSOP (Q)
.337
.344
.053
.069
.004
.010
SEATING
PLANE
.025
BSC
.007
.010
.228
.244
.150
.157
1
20
.016
.050
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
0.635
8.56
8.74
1.35
1.75
5.79
6.19
0.41
1.27
0.101
0.254
.008
.012
0.203
0.305
3.81
3.99
0.178
0.254
.058
1.47
.015 x 45
0.38
REF
Detail A
Detail A
.008
0.20
MIN.
Guage Plane
.010
0.254
.041
1.04
REF
.016
.035
0.41
0.89
0-6
.008
.013
0.20
0.33
Packaging Mechanical: 20-pin TSSOP (L)
.252
.260
.047
1.20
.002
.006
SEATING
PLANE
.0256
BSC
.018
.030
.004
.008
.238
.269
1
20
.169
.177
X.XX
X.XX
DENOTES CONTROLLING
DIMENSIONS IN MILLIMETERS
0.05
0.15
6.1
6.7
0.45
0.75
0.09
0.20
4.3
4.5
6.4
6.6
0.65
0.19
0.30
.007
.012
Max
7
PS2016C 10/01/04
PI74FCT374T
PI74FCT574T
Octal D Registers (3-State)
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Packaging Mechanical: 20-pin SSOP (H)
.272
.295
.078
.002
SEATING
PLANE
.0098
Max.
.0256
BSC
.022
.037
.004
.009
.291
.322
1
20
.197
.220
0.25
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
0.050
7.40
8.20
0.55
0.95
0.09
0.25
5.00
5.60
2.00
6.90
7.50
0.65
Max
Min
Packaging Mechanical: 20-pin SOIC (S)
SEATING
PLANE
.050
BSC
1
20
0-8
.2914
.2992
X.XX
X.XX
DENOTES CONTROLLING
DIMENSIONS IN MILLIMETERS
7.40
7.60
.496
.511
12.60
12.99
1.27
.0926
.1043
2.35
2.65
.394
.419
10.00
10.65
.0040
.0118
0.10
0.30
.013
.020
0.33
0.51
.010
.029
0.254
0.737
.0091
.0125
0.23
0.32
0.41
1.27
.016
.050
x 45
.020
.030
0.508
0.762
REF
8
PS2016C 10/01/04
PI74FCT374T
PI74FCT574T
Octal D Registers (3-State)
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Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
PI74FCT374T Ordering Information
Ordering Code
Package Code
Package Type
PI74FCT374TQ
Q
20-pin QSOP
PI74FCT374TQE
Q
Pb-free & Green, 20-pin QSOP
PI74FCT374TS
S
20-pin SOIC
PI74FCT374TSE
S
Pb-free & Green, 20-pin SOIC
PI74FCT374ATH
H
20-pin SSOP
PI74FCT374ATHE
H
Pb-free & Green, 20-pin SSOP
PI74FCT374ATQ
Q
20-pin QSOP
PI74FCT374ATQE
Q
Pb-free & Green, 20-pin QSOP
PI74FCT374ATS
S
20-pin SOIC
PI74FCT374ATSE
S
Pb-free & Green, 20-pin SOIC
PI74FCT374ATL
L
20-pin TSSOP
PI74FCT374ATLE
L
Pb-free & Green, 20-pin TSSOP
PI74FCT374CTH
H
20-pin SSOP
PI74FCT374CTHE
H
Pb-free & Green, 20-pin SSOP
PI74FCT374CTQ
Q
20-pin QSOP
PI74FCT374CTQE
Q
Pb-free & Green, 20-pin QSOP
PI74FCT374CTS
S
20-pin SOIC
PI74FCT374CTSE
S
Pb-free & Green, 20-pin SOIC
PI74FCT374CTL
L
20-pin TSSOP
PI74FCT374CTLE
L
Pb-free & Green, 20-pin TSSOP
PI74FCT374DTH
H
20-pin SSOP
PI74FCT374DTHE
H
Pb-free & Green, 20-pin SSOP
PI74FCT374CTQ
Q
20-pin QSOP
PI74FCT374CTQE
Q
Pb-free & Green, 20-pin QSOP
PI74FCT374CTL
L
20-pin TSSOP
PI74FCT374CTLE
L
Pb-free & Green, 20-pin TSSOP
9
PS2016C 10/01/04
PI74FCT374T
PI74FCT574T
Octal D Registers (3-State)
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Pericom Semiconductor Corporation 1-800-435-2336 www.pericom.com
Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
PI74FCT574T Ordering Information
Ordering Code
Package Code
Package Type
PI74FCT574TL
L
20-pin TSSOP
PI74FCT574TLE
L
Pb-free & Green, 20-pin TSSOP
PI74FCT574TQ
Q
20-pin QSOP
PI74FCT574TQE
Q
Pb-free & Green, 20-pin QSOP
PI74FCT574TS
S
20-pin SOIC
PI74FCT574TSE
S
Pb-free & Green, 20-pin SOIC
PI74FCT574ATL
L
20-pin TSSOP
PI74FCT574ATLE
L
Pb-free & Green, 20-pin TSSOP
PI74FCT574ATQ
Q
20-pin QSOP
PI74FCT574ATQE
Q
Pb-free & Green, 20-pin QSOP
PI74FCT574ATS
S
20-pin SOIC
PI74FCT574ATSE
S
Pb-free & Green, 20-pin SOIC
PI74FCT574CTL
L
20-pin TSSOP
PI74FCT574CTLE
L
Pb-free & Green, 20-pin TSSOP
PI74FCT574CTQ
Q
20-pin QSOP
PI74FCT574CTQE
Q
Pb-free & Green, 20-pin QSOP
PI74FCT574CTS
S
20-pin SOIC
PI74FCT574CTSE
S
Pb-free & Green, 20-pin SOIC
PI74FCT574DTQ
Q
20-pin QSOP
PI74FCT574DTQE
Q
Pb-free & Green, 20-pin QSOP
PI74FCT574DTS
S
20-pin SOIC
PI74FCT574DTSE
S
Pb-free & Green, 20-pin SOIC
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