ETC PI74LPT374S

PI74LPT374
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Fast CMOS 3.3V Octal D Flip-Flop
Product Features
Product Description
• Compatible with LCX™ and LVT™ families of products
• Supports 5V Tolerant Mixed Signal Mode Operation
– Input can be 3V or 5V
– Output can be 3V or connected to 5V bus
• Advanced Low Power CMOS Operation
• Excellent output drive capability:
Balanced drives (24mA sink and source)
• Low ground bounce outputs
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Packages 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 PI74LPT series of logic circuits are
produced using the Company’s advanced submicron CMOS
technology, achieving industry leading speed grades.
The PI74LPT374 8-bit wide octal resisters designed with eight
D-type flip-flops, 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.
The PI74LPT374 can be driven from either 3.3V or 5.0V devices
allowing for the device to be used as a translator in a mixed
3.3V/5.0V system.
Product Pin Configuration
OE
O0
D0
D1
O1
O2
D2
D3
O3
GND
Logic Block Diagram
OE
CP
D0
D
V
O0
CP
1
2
3
4
5
6
7
8
9
10
20-Pin
L, Q, S
20
19
18
17
16
15
14
13
12
11
Vcc
O7
D7
D6
O6
O5
D5
D4
O4
CP
TO 7 OTHER CHANNELS
Truth Table(1)
DN
H
L
X
Product Pin Description
Inputs
CP
↑
↑
X
OE
L
L
H
Outputs
ON
H
L
Z
Note:
1. H = High Voltage Level, X = Don’t Care,
L = Low Voltage Level,
Z = High Impedance,↑ LOW-to-HIGH Transition
1
Pin Name
OE
CP
Description
Output Enable Input (Active LOW)
Clock Pulse, LOW-to-HIGH Transition
D7-D0
O7-O0
GND
VCC
Data Inputs
3-State Outputs
Ground
Power
PS8503
10/12/00
PI74LPT374
Fast CMOS 3.3V Octal D Flip-Flop
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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
Power Dissipation ................................................................................. 1.0W
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, TA = –40°C to +85°C, VCC = 2.7V to 3.6V)
Parameters
IOZH
IOZL
VIK
IODH
IODL
VOH
Input HIGH Voltage (Input pins)
Input HIGH Voltage (I/O pins)
Input LOW Voltage
(Input and I/O pins)
Input HIGH Current (Input pins)
Input HIGH Current (I/O pins)
Input LOW Current (Input pins)
Input LOW Current (I/O pins)
High Impedance Output Current
(3-State Output pins)
Clamp Diode Voltage
Output HIGH Current
Output LOW Current
Output HIGH Voltage
VOL
Output LOW Voltage
IOS
IOFF
VH
Short Circuit Current(4)
Power Down Disable
Input Hysteresis
VIH
VIL
IIH
IIL
Test Conditions(1)
Description
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
VCC = Max.
VIN = 5.5V
VCC = Max.
VIN = VCC
VCC = Max.
VIN = GND
VCC = Max.
VIN = GND
VCC = Max.
VOUT = 5.5V
VCC = Max.
VOUT = GND
VCC = Min., IIN = –18 mA
VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3)
VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3)
VCC = Min.
IOH = –0.1 mA
VIN = VIH or VIL
IOH = –3 mA
VCC = 3.0V,
IOH = –8 mA
VIN = VIH or VIL
IOH = –24 mA
VCC = Min.
IOL = 0.1 mA
VIN = VIH or VIL
IOL = 16 mA
IOL = 24 mA
VCC = Max.(3), VOUT = GND
VCC = 0V, VIN or VOUT £ 4.5V
Min.
Typ(2)
Max.
Units
2.2
2.0
–0.5
—
—
—
5.5
5.5
0.8
V
V
V
—
—
—
—
—
—
—
–36
50
VCC-0.2
2.4
2.4(5)
2.0
—
—
—
–60
—
—
—
—
—
—
—
—
–0.7
–60
90
—
3.0
3.0
—
—
0.2
0.3
–85
—
150
±1
±1
±1
±1
±1
±1
–1.2
–110
200
—
—
—
—
0.2
0.4
0.5
–240
±100
—
µA
µA
µA
µA
µA
µA
V
mA
mA
V
V
V
V
V
V
mA
µA
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 = 3.3V, +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.
4. This parameter is guaranteed but not tested.
5. VOH = VCC – 0.6V at rated current.
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(1)
CIN
C OUT
Description
Test Conditions
Typ
Max.
Units
Input Capacitance
Output Capacitance
VIN = 0V
VOUT = 0V
4.5
5.5
6
8
pF
pF
Note:
1. This parameter is determined by device characterization but is not production tested.
2
PS8503
10/12/00
PI74LPT374
Fast CMOS 3.3V Octal D Flip-Flop
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Power Supply Characteristics
Parameters Description
ICC
∆ICC
ICCD
IC
Quiescent Power Supply Current
Quiescent Power Supply Current
TTL Inputs HIGH
Dynamic Power Supply(4)
Total Power Supply
Current(6)
Test Conditions(1)
VCC = Max.
Min.
VIN = GND or VCC
(3)
Typ(2)
Max.
Units
0.1
10
µA
VCC = Max.
VIN = VCC – 0.6V
2.0
30
µA
VCC = Max.,
Outputs Open
OE = GND
One Bit Toggling
50% Duty Cycle
VIN = VCC
VIN = GND
50
75
µA/
MHz
VCC = Max.,
Outputs Open
fI = 10 MHZ
50% Duty Cycle
OE = GND
One Bit Toggling
VIN = VCC – 0.6V
VIN = GND
0.6
VCC = Max.,
Outputs Open
fI = 2.5 MHZ
50% Duty Cycle
OE = GND
8 Bits Toggling
VIN = VCC – 0.6V
VIN = GND
2.3
mA
1
2
3
4
5
2.1
4.7(5)
6
7
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 = 3.3V, +25°C ambient.
3. Per TTL driven input; 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 + ∆ICC DHNT + ICCD (fCP/2 + fI NI)
ICC = Quiescent Current (ICCL, ICCV and ICCZ)
∆ICC = Power Supply Current for a TTL High Input
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)
NCP = Number of Clock Inputs at fCP
fI = Input Frequency
NI = Number of Inputs at fI
All currents are in milliamps and all frequencies are in megahertz.
8
9
10
11
12
13
14
15
3
PS8503
10/12/00
PI74LPT374
Fast CMOS 3.3V Octal D Flip-Flop
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Switching Characteristics over Operating Range (1)
LPT374
LPT374A
Com.
Parameters Description
FMAX
Maximum Clock
Frequency
tPHL
tP LH
Propagation Delay
xCLK to xOx
tPZH
tPZL
Conditions
(2)
Min.
(3)
Com.
Max.
150
C L = 50 pF
R L = 500Ω
LPT374C
Min.
(3)
Com.
Max.
150
Min.
(3)
Max.
150
Units
MHz
2.0
8.0
2.0
5.5
2.0
4.5
ns
Output Enable Time
xOE to xOx
1.5
8.5
1.5
6.5
1.5
5.5
ns
tPHZ
tPLZ
Output Disable Time(4)
xOE to xOx
1.5
8.5
1.5
5.5
1.5
5.0
ns
t SU
Setup Time HIGH
or LOW, xDx to xCLK
2.0
2.0
2.0
ns
tH
Hold Time HIGH
or LOW, xDx to xCLK
1.5
1.5
1.5
ns
tW
xCLK Pulse Width(4)
HIGH
7.0
5.0
5.0
ns
t SK (o)
Output Skew (5)
0.5
0.5
0.5
ns
Notes:
1. Propagation Delays and Enable/Disable times are with VCC = 3.3V ±0.3V, normal range. For VCC = 2.7V, extended range,
all Propagation Delays and Enable/Disable times should be degraded by 20%.
2. See test circuit and waveforms.
3. Minimum limits are guaranteed but not tested on Propagation Delays.
4. This parameter is guaranteed but not production tested.
5. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
4
PS8503
10/12/00