PI74FCT273T
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Fast CMOS Octal D Flip-Flop
with Master Reset
Features
Description
• 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
• Packaging (Pb-free & Green available):
– 20-pin 173-mil wide plastic TSSOP (L)
– 20-pin 150-mil wide plastic QSOP (Q)
– 20-pin 300-mil wide plastic SOIC (S)
Pericom Semiconductor’s PI74FCT273T is a 8-bit wide octal designed
with eight edge-triggered D-type flip-flops with individual D inputs
and O outputs. The common buffered Clock (CP) and Master Reset
(MR) load and resets (clear) all flip-flops simultaneously. The
register is fully edge-triggered. The D input state, one setup time
before the LOW-to-HIGH clock transition, is transferred to the
corresponding flip-flop's O output. All outputs will be forced LOW
independently of Clock or Data inputs by a LOW voltage level on
the MR input.
Device models available upon request.
Block Diagram
D0
D1
D2
D3
D4
D5
D6
D7
CP
D
Q
D
CP
Q
D
CP
RD
Q
D
CP
RD
Q
D
CP
RD
Q
D
CP
RD
Q
D
CP
RD
Q
D
CP
RD
Q
CP
RD
RD
MR
O0
Pin Configuration
MR
O0
D0
D1
O1
O2
D2
D3
O3
GND
1
2
3
4
5
6
7
8
9
10
08-0291
20
19
18
17
16
15
14
13
12
11
O1
O2
O3
Pin Description
Vcc
O7
D7
D6
O6
O5
D5
D4
O4
CP
Pin Name
MR
CP
D0-D7
O0-O7
GND
VCC
O4
O5
O6
O7
Truth Table(1)
Description
Master Reset (Active LOW)
Clock Pulse Input
(Active Rising Edge)
Data Inputs
Data Outputs
Ground
Power
1
Mode
MR
Reset (Clear) L
Load "1"
H
Load "0"
H
Inputs
CP
X
↑
↑
DN
X
h
l
Outputs
ON
L
H
L
1. H = High Voltage Level
h = High Voltage Level one setup time
prior to the LOW-to-HIGH Clock
transition
L = Low Voltage Level
l = LOW Voltage Level one setup time
prior to the LOW-to-HIGH Clock
Transition
X = Don’t Care
↑ = LOW-to-HIGH Clock Transition
PS2013F
11/10/08
PI74FCT273T
Octal D Flip-Flop with Master Reset
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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 = –15.0mA
2.4
3.0
V
VOL
Output LOW Current
VCC = Min., VIN = VIH or VIL
IOL = 64mA
0.3
0.55
V
VOL
Output LOW Current
VCC = Min., VIN = VIH or VIL
IOL = 12mA
0.3
0.50
V
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 = –18mA
IOFF
Power Down Disable
VCC = GND, VOUT = 4.5V
IOS
Short Circuit Current
VCC = Max.(3), VOUT = GND
VH
Input Hysteresis
2.0
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
–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.
08-0291
2
PS2013F
11/10/08
PI74FCT273T
Octal D Flip-Flop with Master Reset
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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
per Input @ TTL HIGH
VCC = Max.
VIN = 3.4V(3)
0.5
2.0
mA
ICCD
Supply Current per
Input per MHx(4)
VCC = Max., Outputs Open
VIN = VCC
MR = Vcc, One Input Toggling VIN = GND
50% Duty Cycle
0.15
0.25
mA/
MHz
IC
Total Power Supply
Current(6)
VCC = Max., Outputs Open
fCP = 10 MHZ, 50% Duty Cycle
MR = Vcc, 50% Duty Cycle
One Bit toggling at fI = 5 MHZ
VCC = Max., Outputs Open
fCP = 10 MHZ, 50% Duty Cycle
MR = VCC, 50% Duty Cycle
Eight Bits toggling at
fI = 2.5 MHZ, 50% Duty Cycle
VIN = VCC
VIN = GND
VIN = 3.4V
VIN = GND
1.5
3.5(5)
mA
2.0
3.5(5)
VIN = VCC
VIN = GND
VIN = 3.4V
VIN = GND
3.8
7.3(5)
6.0
16.3(5)
Notes:
1. For Max. or Min. conditions, 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.
08-0291
3
PS2013F
11/10/08
PI74FCT273T
Octal D Flip-Flop with Master Reset
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Switching Characteristics over Operating Range
273T
273AT
Com.
273CT
Com.
Com.
Parameters
Description
Conditions
Min
Max
Min
Max
Min
Max
Unit
t PLH
t PHL
t PHL
t PLH
tSU
Propagation Delay(1)
CP to ON
Propagation Delay(1)
MR to ON
Setup Time, HIGH or LOW
Dn to CP
Hold Time, HIGH or LOW
Dn to CP
CP Pulse Width(2)
HIGHorLOW
MR Pulse Width(2)
LOW
CL = 50pF
RL = 500Ω
2.0
13.0
2.0
7.2
2.0
5.8
ns
2.0
13.0
2.0
7.2
2.0
6.1
ns
tH
tw
tW
tREM
Recovery Time MR to CP (2)
3.0
2.0
2.0
ns
2.0
1.5
1.5
ns
7.0
6.0
6.0
ns
7.0
6.0
6.0
ns
4.0
2.0
2.0
ns
Notes:
1. Minimum limits are guaranteed but not tested on Propagation Delays.
2. This parameter guaranteed but not production tested.
Packaging Mechanical: 20-pin SOIC (S)
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4
PS2013F
11/10/08
PI74FCT273T
Octal D Flip-Flop with Master Reset
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Packaging Mechanical: 20-Pin TSSOP (L)
DOCUMENT CONTROL NO.
PD - 1311
20
REVISION: E
DATE: 03/09/05
.169
.177
1
.252
.260
6.4
6.6
.004 0.09
.008 0.20
.047
1.20
Max
1
.0256
BSC
0.65
4.3
4.5
.007
.012
0.19
0.30
0.45
0.75
SEATING
PLANE
.018
.030
.238
.269
6.1
6.7
.002 0.05
.006 0.15
Pericom Semiconductor Corporation
3545 N. 1st Street, San Jose, CA 95134
1-800-435-2335 • www.pericom.com
Note:
1. Package Outline Exclusive of Mold Flash and Metal Burr
2. Controlling dimentions in millimeters
3. Ref: JEDEC MO-153F/AC
DESCRIPTION: 20-Pin, 173-Mil Wide, TSSOP
PACKAGE CODE: L
08-0291
5
PS2013F
11/10/08
PI74FCT273T
Octal D Flip-Flop with Master Reset
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Packaging Mechanical: 20-pin QSOP (Q)
DOCUMENT CONTROL NO.
3'
20
REVISION: H
.008
0.20
MIN.
.150
.157
3.81
3.99
Guage Plane
.010
0.254
1
.041
1.04
REF
[Û
0.38
.053 1.35
.069 1.75
Detail A
1
SEATING
PLANE
.025
BSC
0.635
ÛÛ
.016
.035
0.41
0.89
Detail A
.337 8.56
.344 8.74
.058 REF
1.47
DATE: 10/22/07
.008
.013
0.20
0.33
.008 0.203
.012 0.305
.004 0.101
.010 0.254
.007
.010
0.178
0.254
.228
.244
5.79
6.19
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
Pericom Semiconductor Corporation
3545 N. 1st Street, San Jose, CA 95134
• www.pericom.com
Note:
1) Controlling dimensions in inches.
2) Ref:-('(&02%$'
3) Dimensions do not include mold flash, protrusions or gate burrs
DESCRIPTION:3LQ,0LO Wide, QSOP
PACKAGE CODE: Q
08-0291
6
PS2013F
11/10/08
PI74FCT273T
Octal D Flip-Flop with Master Reset
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Ordering Information
Ordering Code
PI74FCT273TQ
PI74FCT273TSE
PI74FCT273ATL
PI74FCT273ATS
PI74FCT273ATSE
PI74FCT273ATQ
Package Code
Q
S
L
S
S
Q
Speed Grade
Blank
Blank
A
A
A
A
Package Type
20-pin QSOP
Pb-free & Green, 20-pin SOIC
20-pin TSSOP
20-pin SOIC
Pb-free & Green, 20-pin SOIC
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
Pericom Semiconductor Corporation
08-0291
• 1-800-435-2336 • www.pericom.com
7
PS2013F
11/10/08
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