PI74LPT573S [ETC]
8-Bit D-Type Latch ; 8位D类锁存器\n
| 型号： | PI74LPT573S |
| 厂家： | 
ETC |
| 描述： | 8-Bit D-Type Latch
|
| 文件： | 总4页 (文件大小：167K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI74LPT573
Fast CMOS 3.3V 8-Bit
Transparent Latch
Features
Description
CompatiblewithLCXandLVTfamiliesofproducts
Pericom Semiconductors PI74LPT series of logic circuits are pro-
duced in the Companys advanced 0.6 micron CMOS technology,
achieving industry leading speed grades.
Supports 5V Tolerant Mixed Signal Mode Operation
Input can be 3V or 5V
Output can be 3V or connected to 5V bus
The PI74LPT573 is an 8-bit transparent latch designed with
3-state outputs and is intended for bus oriented applications. When
Latch Enable (LE) is HIGH, the flip-flops appear transparent to the
data.Thedatathatmeetstheset-uptimewhenLEisLOWislatched.
When OE is HIGH, the bus output is in the high impedance state.
Advanced Low Power CMOS Operation
Excellent output drive capability:
Balanced drives (24 mA sink and source)
Low ground bounce outputs
The PI74LPT573 can be driven from either 3.3V or 5.0V devices
allowing this device to be used as a translator in a mixed
3.3/5.0V system.
Hysteresis on all inputs
Industrial operating temperature range: 40°C to +85°C
Packages available:
20-pin173milwideplasticTSSOP(L)
20-pin150milwideplasticQSOP(Q)
20-pin150milwideplasticTQSOP(R)
20-pin300milwideplasticSOIC(S)
Pinout
Logic Block Diagram
OE
LE
20 Vcc
19 O0
18 O1
17 O2
16 O3
15 O4
14 O5
13 O6
12 O7
11 LE
OE
D0
D1
D2
D3
D4
D5
D6
D7
1
2
3
4
5
6
7
8
9
20-Pin
L20
R20
Q20
S20
D0
D
G
O
0
O
GND 10
TO 7 OTHER CHANNELS
Truth Table
Pin Description
Inputs(1)
Outputs(1)
Pin Name
OE
Description
DN
H
LE
H
OE
L
ON
H
Output Enable Input (Active LOW)
Latch Enable Input (Active HIGH)
Data Inputs
LE
L
H
L
L
D7-D0
O7-O0
GND
VCC
X
X
H
Z
3-State Outputs
Ground
Note:
1. H = High Voltage Level, X = Don't Care,
L = Low Voltage Level, Z = High Impedance
Power
PS2063A 01/15/97
1
PI74LPT573
3.3V 8-BIT TRANSPARENT LATCH
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 de-
vice. This is a stress rating only and functional opera-
tion of the device at these or any other conditions
above those indicated in the operational sections of
thisspecificationisnotimplied. Exposuretoabsolute
maximumratingconditionsforextendedperiodsmay
affect reliability.
DC Electrical Characteristics (Over the Operating Range, TA = 40°C to +85°C, VCC = 2.7V to 3.6V)
Parameters
Description
Test Conditions(1)
Min. Typ(2) Max. Units
VIH
Input HIGH Voltage (Input pins)
Input HIGH Voltage (I/O pins)
Input LOW Voltage
Guaranteed Logic HIGH Level
2.2
2.0
0.5
5.5
5.5
0.8
V
V
V
VIL
IIH
IIL
Guaranteed Logic LOW Level
(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
VCC = Max.
VIN = 5.5V
36
50
±1
±1
±1
±1
±1
µA
µA
µA
µA
µA
µA
V
mA
mA
V
VCC = Max.
VIN = VCC
VCC = Max.
VCC = Max.
VCC = Max.
VCC = Max.
VIN = GND
VIN = GND
VOUT = 5.5V
VOUT = GND
IOZH
IOZL
VIK
IODH
IODL
VOH
±1
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)
0.7
60
90
1.2
110
200
VCC = Min.
IOH = 0.1 mA Vcc-0.2
VIN = VIH or VIL
VCC = 3.0V,
VIN = VIH or VIL
VCC = Min.
VIN = VIH or VIL
IOH = 3 mA
IOH = 8 mA
IOH = 24 mA
IOL = 0.1 mA
IOL = 16 mA
IOL = 24 mA
2.4
2.4(5)
2.0
60
3.0
3.0
0.2
0.4
0.5
240
±100
V
V
VOL
Output LOW Voltage
V
V
V
mA
µA
mV
0.2
0.3
85
IOS
IOFF
VH
Short Circuit Current(4)
Power Down Disable
Input Hysteresis
VCC = Max.(3), VOUT = GND
VCC = 0V, VIN or VOUT ≤ 4.5V
150
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)
Description
Test Conditions
Typ.
Max.
Units
CIN
Input Capacitance
Output Capacitance
VIN = 0V
4.5
5.5
6
8
pF
pF
COUT
VOUT = 0V
Note:
1. This parameter is determined by device characterization but is not production tested.
PS2063A 01/15/97
2
PI74LPT573
3.3V 8-BIT TRANSPARENT LATCH
Power Supply Characteristics
1
2
Parameters Description
Test Conditions(1)
VCC = Max.
Min. Typ(2) Max. Units
ICC
Quiescent Power Supply Current
VIN = GND or VCC
VIN = VCC 0.6V(3)
0.1
2.0
10
30
µA
µA
∆ICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
ICCD
Dynamic Power Supply(4)
VCC = Max.,
VIN = VCC
50
75
µA/
Outputs Open
OE = GND
One Bit Toggling
50% Duty Cycle
VIN = GND
MHz
3
IC
Total Power Supply
Current(6)
VCC = Max.,
Outputs Open
fI = 10 MHZ
50% Duty Cycle
OE = GND
VIN = VCC 0.6V
VIN = GND
0.6
2.3
mA
4
5
One Bit Toggling
VCC = Max.,
Outputs Open
fI = 2.5 MHZ
50% Duty Cycle
OE = GND
VIN = VCC 0.6V
VIN = GND
2.1
4.7(5)
6
8 Bits Toggling
7
Notes:
8
1. For Max. or Min. conditions, 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
9
IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fINI)
ICC = Quiescent Current (ICCL, ICCH and ICCZ)
∆ICC = Power Supply Current for a TTL High Input
DH = Duty Cycle for TTL Inputs High
10
11
12
13
14
15
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.
PS2063A 01/15/97
3
PI74LPT573
3.3V 8-BIT TRANSPARENT LATCH
Switching Characteristics over Operating Range(1)
LPT573
Com.
LPT573A
Com.
LPT573C
Com.
Parameters Description
Conditions(2)
Min.3)
Max.
Min.(3)
Max.
Min.(3)
Max.
Units
tPLH
tPHL
Propagation Delay
Dx to Ox
CL = 50pF
RL = 500Ω
1.5
2.0
1.5
1.5
2.0
1.5
6.0
8.0
1.5
2.0
1.5
1.5
2.0
1.5
5.0
5.2
1.5
2.0
1.5
1.5
2.0
1.5
5.0
4.2
ns
tPLH
tPHL
Propagation Delay
LE to Ox
12.0
9.5
8.5
6.5
5.5
5.5
5.5
5.0
ns
ns
ns
ns
ns
ns
ns
tPZH
tPZL
Output Enable Time
OE to Ox
Output Disable Time(4)
OE to Ox
tPHZ
tPLZ
6.5
tSU
Setup Time HIGH
or LOW, Dx to LE
tH
Hold Time HIGH
or LOW, Dx to LE
LE Pulse Width(4)
HIGH
tW
tSK(o)
Output Skew(5)
0.5
0.5
0.5
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
PS2063A 01/15/97
4
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