PI74FCT373T/533T/573T
(25
Series) P174FCT2373T/2573T
OCTAL TRANSPARENT LATCHES
1
PS2015A 03/11/96
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PI74FCT373/2373T and PI74FCT573/2573T Logic Block Diagram
PI74FCT533T Logic Block Diagram
Product Description:
Pericom Semiconductor's PI74FCT series of logic circuits are
produced in the Company's advanced 0.6/0.8 micron CMOS
technology, achieving industry leading speed grades. All
PI74FCT2XXX devices have a built-in 25 ohm series resistor on
all outputs to reduce noise resulting from reflections, thus
eliminating the need for an external terminating resistor.
The PI74FCT373T/533T/573T and P174FCT2373T/2573T are
8-bit wide octal transparent latches designed with 3-state outputs
and are intended for bus oriented applications. When Latch Enable
(LE) is HIGH, the flip-flops appear transparent to the data. The
data that meets the set-up time when LE is LOW is latched. When
OE is HIGH, the bus output is in the high impedance state.
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PI74FCT373T/533T/573T
(25
Series) P174FCT2373T/2573T
OCTAL TRANSPARENT LATCHES
Fast CMOS Octal
Transparent Latches
Product Features:
PI74FCT373/533/573/2373/2573T is pin compatible with bipolar
FASTTM Series at a higher speed and lower power
consumption
25
series resistor on all outputs (FCT2XXX only)
TTL input and output levels
Low ground bounce outputs
Extremely low static power
Hysteresis on all inputs
Industrial operating temperature range: 40C to +85C
Packages available:
20-pin 173 mil wide plastic TSSOP (L)
20-pin 300 mil wide plastic DIP (P)
20-pin 150 mil wide plastic QSOP (Q)
20-pin 150 mil wide plastic TQSOP (R)
20-pin 300 mil wide plastic SOIC (S)
Device models available upon request
O
D
G
OE
LE
D
0
O
0
O
D
G
D
1
O
1
O
D
G
D
2
O
2
O
D
G
D
3
O
3
O
D
G
D
4
O
4
O
D
G
D
5
O
5
O
D
G
D
6
O
6
O
D
G
D
7
O
7
O
D
G
OE
LE
D
0
O
0
O
D
G
D
1
O
1
O
D
G
D
2
O
2
O
D
G
D
3
O
3
O
D
G
D
4
O
4
O
D
G
D
5
O
5
O
D
G
D
6
O
6
O
D
G
D
7
O
7
PI74FCT373T/533T/573T
(25
Series) P174FCT2373T/2573T
OCTAL TRANSPARENT LATCHES
2
PS2015A 03/11/96
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Inputs
Outputs
D
N
LE
OE
O
N
H
H
L
L
L
H
L
H
X
X
H
Z
PI74FCT533T Truth Table
(1)
Inputs
Outputs
D
N
LE
OE
O
N
H
H
L
H
L
H
L
L
X
X
H
Z
PI74FCT373/573/2373/2573T Truth Table
(1)
1.
H = High Voltage Level
L = Low Voltage Level
X = Don't Care
Z = High Impedance
Pin Name
Description
OE
Output Enable Input (Active LOW)
LE
Latch Enable Input (Active HIGH)
D
0
-D
7
Data Inputs
O
0
-O
7
3-State Outputs
O
0
-O
7
Complementary 3-State Outputs
GND
Ground
V
CC
Power
Product Pin Description
PI74FCT373/2373T Product Pin Configuration
PI74FCT533T Product Pin Configuration
PI74FCT573/2573T Product Pin Configuration
20-PIN
L20
P20
Q20
R20
S20
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
LE
20-PIN
L20
P20
Q20
R20
S20
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
LE
20-PIN
L20
P20
Q20
R20
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
LE
PI74FCT373T/533T/573T
(25
Series) P174FCT2373T/2573T
OCTAL TRANSPARENT LATCHES
3
PS2015A 03/11/96
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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
MAXIMUM 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.
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.
PI74FCT373T/533T/573T
(25
Series) P174FCT2373T/2573T
OCTAL TRANSPARENT LATCHES
4
PS2015A 03/11/96
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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
LE = V
CC
One Bit Toggling
50% Duty Cycle
I
C
Total Power Supply
V
CC
= Max.,
V
IN
= V
CC
1.5
3.0
(5)
mA
Current
(6)
Outputs Open
V
IN
= GND
f
I
= 10 MH
Z
50% Duty Cycle
OE = GND
V
IN
= 3.4V
1.8
4.5
(5)
LE = V
CC
V
IN
= GND
One Bit Toggling
V
CC
= Max.,
V
IN
= V
CC
3.0
6.0
(5)
Outputs Open
V
IN
= GND
f
I
= 2.5 MH
Z
50% Duty Cycle
OE = GND
V
IN
= 3.4V
5.0
14.0
(5)
LE = V
CC
V
IN
= GND
Eight Bits Toggling
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
Ni)
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.
PI74FCT373T/533T/573T
(25
Series) P174FCT2373T/2573T
OCTAL TRANSPARENT LATCHES
5
PS2015A 03/11/96
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PI74FCT373/2373T Switching Characteristics over Operating Range
373T/2373T
373AT/2373AT
373CT/2373CT
373DT
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
1.5
8.0
1.5
5.2
1.5
4.2
1.5
3.8
ns
t
PHL
D
N
to O
N
R
L
= 500
t
PLH
Propagation Delay
2.0
13.0
2.0
8.5
2.0
5.5
1.5
4.9
ns
t
PHL
LE to O
N
t
PZH
Output Enable Time
1.5
12.0
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
7.5
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 LE
t
H
Hold Time HIGH or
1.5
--
1.5
--
1.5
--
1.5
--
ns
LOW, D
N
to LE
t
W
LE Pulse Width
(3)
6.0
--
5.0
--
5.0
--
4.0
--
ns
HIGH
PI74FCT533T Switching Characteristics over Operating Range
533T
533AT
533CT
Com.
Com.
Com.
Parameters
Description
Conditions
(1)
Min
Max
Min
Max
Min
Max
Unit
t
PLH
Propagation Delay
C
L
= 50 pF
1.5
10.0
1.5
5.2
1.5
4.2
ns
t
PHL
D
N
to O
N
R
L
= 500
t
PLH
Propagation Delay
2.0
13.0
2.0
8.5
2.0
5.5
ns
t
PHL
LE to O
N
t
PZH
Output Enable Time
1.5
11.0
1.5
6.5
1.5
5.5
ns
t
PZL
OE to O
N
t
PHZ
Output Disable Time
(3)
1.5
7.0
1.5
5.5
1.5
5.0
ns
t
PLZ
OE to O
N
t
SU
Setup Time HIGH or
2.0
--
2.0
--
2.0
--
ns
LOW, D
N
to LE
t
H
Hold Time HIGH or
1.5
--
1.5
--
1.5
--
ns
LOW, D
N
to LE
t
W
LE Pulse Width
(3)
6.0
--
5.0
--
5.0
--
ns
HIGH
Notes:
1. See test circuit and wave forms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. This parameter guaranteed but not production tested.
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