PI74FCT373T
PI74FCT573T
Octal Transparent Latches
Features:
Description:
• PI74FCT373/573T are pin compatible with bipolar FAST™
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: –40°C to +85°C
• Device models available upon request
• Packaging:
PI74FCT373T (Pb-free & Green available)
– 20-pin TSSOP (L)
– 20-pin QSOP (Q)
– 20-pin SOIC (S)
Pericom Semiconductor’s PI74FCT373T and PI74FCT 573T 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.
PI74FCT573T (Pb-free & Green available)
– 20-pin QSOP (Q)
– 20-pin SOIC (S)
Block Diagram
D0
D1
D
D2
D
D3
D
O
D
O
G
D4
D
O
G
D5
D
O
G
D6
D
O
G
D7
D
O
G
O
G
O
G
G
LE
OE
O0
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O1
O2
O3
1
O4
O5
O6
O7
PS2015E
04/12/07
PI74FCT373T
PI74FCT573T
OCTAL TRANSPARENT LATCHES
PI74FCT373 Pin Configuration
OE
O0
D0
D1
O1
O2
D2
D3
O3
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Pin Description
Pin Name
OE
LE
D0-D7
O0-O7
O0-O7
GND
VCC
Vcc
O7
D7
D6
O6
O5
D5
D4
O4
LE
Truth Table(1)
DN
H
L
X
PI74FCT573 Pin Configuration
OE
D0
D1
D2
D3
D4
D5
D6
D7
GND
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1
2
3
4
5
6
7
8
9
10
20
19
18
20-PIN
Q20 17
S20 16
15
14
13
12
11
Description
Output Enable Input (Active LOW)
Latch Enable Input (Active HIGH)
Data Inputs
3-State Outputs
Complementary 3-State Outputs
Ground
Power
Vcc
O0
O1
O2
O3
O4
O5
O6
O7
Inputs
LE
H
H
X
OE
L
L
H
Outputs
ON
H
L
Z
Notes:
1. H = High Voltage Level
L = Low Voltage Level
X = Don’t Care
Z = High Impedance
LE
2
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PI74FCT373T
PI74FCT573T
OCTAL TRANSPARENT LATCHES
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ................................................................. –65°C to +150°C
Ambient Temperature with Power Applied ................................. -40°C to +85°C
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
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.
Power Dissipation ......................................................................................... 0.5W
DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5.0V ± 5%)
Parameters Description
Test Conditions(1)
Min. Typ(2) Max. Units
VOH
Output HIGH Voltage
VCC = Min., VIN = VIH or VIL
IOH = –15.0 mA
VOL
Output LOW Current
VCC = Min., VIN = VIH or VIL
IOL = 64 mA
VIH
Input HIGH Voltage
Guaranteed Logic HIGH Level
VIL
Input LOW Voltage
Guaranteed Logic LOW Level
IIH
Input HIGH Current
VCC = Max.
IIL
Input LOW Current
IOZH
High Impedance
IOZL
Output Current
VIK
Clamp Diode Voltage
VCC = Min., IIN = –18 mA
IOFF
Power Down Disable
VCC = GND, VOUT = 4.5V
IOS
Short Circuit Current
(3)
VH
Input Hysteresis
2.4
3.0
0.3
V
0.55
2.0
V
V
0.8
V
VIN = VCC
1
μA
VCC = Max.
VIN = GND
–1
μA
VCC = MAX.
VOUT = 2.7V
1
μA
VOUT = 0.5V
–1
μA
–1.2
V
100
μA
–0.7
VCC = Max. , VOUT = GND
–60
–120
mA
200
mV
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, +25°C 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.
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(1)
Description
Test Conditions
Typ
Max.
Units
CIN
Input Capacitance
VIN = 0V
6
10
pF
COUT
Output Capacitance
VOUT = 0V
8
12
pF
Notes:
1. This parameter is determined by device characterization but is not production tested.
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PS2015E
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PI74FCT373T
PI74FCT573T
OCTAL TRANSPARENT LATCHES
Power Supply Characteristics
Test Conditions(1)
Parameters Description
Min.
Typ(2)
Max.
Units
ICC
Quiescent Power
Supply Current
VCC = Max.
VIN = GND or VCC
0.1
500
μA
ΔICC
Supply Current per
Input @ TTL HIGH
VCC = Max.,
VIN = 3.4V(3)
0.5
2.0
mA
ICCD
Supply Current per
Input per MHz(4)
VCC = Max.,
Outputs Open
OE = GND
LE = VCC
One Bit Toggling
50% Duty Cycle
VIN = VCC
VIN = GND
0.15
0.25
mA/
MHz
IC
Total Power Supply
Current(6)
VCC = Max.,
Outputs Open
fI = 10 MHZ
50% Duty Cycle
OE = GND
LE = VCC
One Bit Toggling
VIN = VCC
VIN = GND
1.5
3.0(5)
mA
VIN = 3.4V
VIN = GND
1.8
4.5(5)
VIN = VCC
VIN = GND
3.0
6.0(5)
VIN = 3.4V
VIN = GND
5.0
14.0(5)
VCC = Max.,
Outputs Open
fI = 2.5 MHZ
50% Duty Cycle
OE = GND
LE = VCC
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, +25°C ambient.
3. Per TTL driven input (VIN = 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. IC =IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ΔICC DHNT + ICCD (fCP/2 + fINi)
ICC = Quiescent Current
ΔICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
fI = Input Frequency
NI = Number of Inputs at fI
All currents are in milliamps and all frequencies are in megahertz.
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PI74FCT373T
PI74FCT573T
OCTAL TRANSPARENT LATCHES
PI74FCT373T Switching Characteristics over Operating Range
373T
373AT
Com.
Parameters
t PLH
t PHL
t PLH
t PHL
t PZH
t PZL
t PHZ
t PLZ
tSU
tH
tW
373CT
Com.
373DT
Com.
Com.
Description
Conditions
Min
Max
Min
Max
Min
Max
Min
Max
Unit
Propagation Delay(1)
DN to ON
Propagation Delay(1)
LE to ON
Output Enable Time
OE to ON
Output Disable Time(2)
OE to ON
Setup Time HIGH or
LOW, DN to LE
Hold Time HIGH or
LOW, DN to LE
LE Pulse Width(2)
HIGH
CL = 50 pF
RL = 500Ω
1.5
8.0
1.5
5.2
1.5
4.2
1.5
3.8
ns
2.0
13.0
2.0
8.5
2.0
5.5
1.5
4.9
ns
1.5
12.0
1.5
6.5
1.5
5.5
1.5
5.5
ns
1.5
7.5
1.5
5.5
1.5
5.0
1.5
5.0
ns
2.0
2.0
2.0
2.0
ns
1.5
1.5
1.5
1.5
ns
6.0
5.0
5.0
4.0
ns
Notes:
1. Minimum limits are guaranteed but not tested on Propagation Delays.
2. This parameter guaranteed but not production tested.
PI74FCT573T Switching Characteristics over Operating Range
573T
573AT
Com.
Parameters
t PLH
t PHL
t PLH
t PHL
t PZH
t PZL
t PHZ
t PLZ
tSU
tH
tW
573CT
Com.
573DT
Com.
Com.
Description
Conditions
Min
Max
Min
Max
Min
Max
Min
Max
Unit
Propagation Delay(1)
DN to ON
Propagation Delay(1)
LE to ON
Output Enable Time
OE to ON
Output Disable Time(2)
OE to ON
Setup Time HIGH or
LOW, DN to LE
Hold Time HIGH or
LOW, DN to LE
LE Pulse Width(2)
HIGH
CL = 50 pF
RL = 500Ω
1.5
8.0
1.5
5.2
1.5
4.2
1.5
3.8
ns
2.0
12.0
2.0
8.5
2.0
5.5
2.0
4.9
ns
1.5
9.5
1.5
6.5
1.5
5.5
1.5
5.5
ns
1.5
6.5
1.5
5.5
1.5
5.0
1.5
5.0
ns
2.0
2.0
2.0
1.5
ns
1.5
1.5
1.5
1.0
ns
6.0
5.0
5.0
3.0
ns
Notes:
1. Minimum limits are guaranteed but not tested on Propagation Delays.
2. This parameter guaranteed but not production tested.
06-0218
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PS2015E
04/12/07
PI74FCT373T
PI74FCT573T
OCTAL TRANSPARENT LATCHES
Packaging Mechanical: 20-Pin TSSOP (L)
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PS2015E
04/12/07
PI74FCT373T
PI74FCT573T
OCTAL TRANSPARENT LATCHES
Packaging Mechanical: 20-pin QSOP (Q)
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06-0218
7
PS2015E
04/12/07
PI74FCT373T
PI74FCT573T
OCTAL TRANSPARENT LATCHES
Packaging Mechanical: 20-pin SOIC (S)
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PS2015E
04/12/07
PI74FCT373T
PI74FCT573T
OCTAL TRANSPARENT LATCHES
PI74FCT373T Ordering Information
Ordering Code
Package Code
PI74FCT373TL
PI74FCT373TLE
PI74FCT373TQ
PI74FCT373TQE
PI74FCT373TS
PI74FCT373TSE
PI74FCT373ATQ
PI74FCT373ATQE
PI74FCT373CTL
L
L
Q
Q
S
S
Q
Q
L
Speed Grade
Blank
Blank
Blank
Blank
Blank
Blank
A
A
C
Package Type
20-pin TSSOP
Pb-free & Green, 20-pin TSSOP
20-pin QSOP
Pb-free & Green, 20-pin QSOP
20-pin SOIC
Pb-free & Green, 20-pin SOIC
20-pin QSOP
Pb-free & Green, 20-pin QSOP
20-pin TSSOP
PI74FCT573T Ordering Information
Ordering Code
PI74FCT573TQ
PI74FCT573TS
PI74FCT573TSE
PI74FCT573ATS
PI74FCT573ATSE
PI74FCT573ATQ
PI74FCT573ATQE
PI74FCT573CTS
PI74FCT573CTSE
PI74FCT573CTQ
PI74FCT573CTQE
PI74FCT573DTQ
PI74FCT573DTQE
Package Code
Q
S
S
S
S
Q
Q
S
S
Q
Q
Q
Q
Speed Grade
Blank
Blank
Blank
A
A
A
A
C
C
C
C
D
D
Package Type
Pb-free & Green, 20-pin QSOP
20-pin SOIC
Pb-free & Green, 20-pin SOIC
20-pin SOIC
Pb-free & Green, 20-pin SOIC
20-pin QSOP
Pb-free & Green, 20-pin QSOP
20-pin SOIC
Pb-free & Green, 20-pin SOIC
20-pin QSOP
Pb-free & Green, 20-pin QSOP
20-pin QSOP
Pb-free & Green, 20-pin QSOP
Notes:
• Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
• E = Pb-free & Green
• Adding an X suffix = Tape/Reel
06-0218
9
PS2015E
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PI74FCT373T
PI74FCT573T
OCTAL TRANSPARENT LATCHES
Pericom Semiconductor Corporation
06-0218
• 1-800-435-2336 • www.pericom.com
10
PS2015E
04/12/07