PI74LPT541CL [ETC]
8-Bit Non-Inverting Buffer/Driver ; 8位非反相缓冲器/驱动器\n
| 型号： | PI74LPT541CL |
| 厂家： | 
ETC |
| 描述： | 8-Bit Non-Inverting Buffer/Driver
|
| 文件： | 总4页 (文件大小：168K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI74LPT541
Fast CMOS 3.3V 8-Bit
Buffer/Line Driver
Product Features
Product Description
Pericom Semiconductors PI74LPT series of logic circuits are
produced using the Companys advanced 0.6 micron CMOS
technology, achieving industry leading speed grades.
• CompatiblewithLCXandLVTfamiliesofproducts
• Supports 5V I/O 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:
ThePI74LPT541isan8-bitbuffer/linedriverdesignedfor driving
high-capacitive memory loads. With its balanced-drive
characteristics, this high-speed, low-power device provides lower
ground bounce, transmission line matching of signals, fewer line
reflections, and lower EMI and RFI effects. This makes it ideal for
driving on-board buses and transmission lines. This device offers
a flow-through organization for ease of board layout.
The PI74LPT541, which can be driven from either 3.3V or 5.0V
devices, can be used as a translator in mixed 3.3/5.0V systems.
20-pin173milwideplasticTSSOP(L)
20-pin150milwideplasticQSOP(Q)
20-pin150milwideplasticTQSOP(R)
20-pin300milwideplasticSOIC(S)
Logic Block Diagram
Product Pin Configuration
Product Pin Description
Pin Name
Description
OEA
OEB
20 Vcc
OEA, OEB
3-State Output Enable
Inputs (Active LOW)
OE
A
1
2
3
4
5
6
7
8
9
19 OE
18 O0
17 O1
16 O2
15 O3
14 O4
13 O5
12 O6
11 O7
B
D0
D1
D2
D3
D4
D5
D6
D7
D7-D0
O7-O0
GND
VCC
Inputs
20-PIN
L20
Q20
R20
S20
Outputs
Ground
Power
D0
D1
D2
O
0
1
2
O
O
GND 10
D
3
4
O
O
3
4
Truth Table(1)
D
Inputs
Outputs
OEA
L
OEB
L
DX
L
OX
L
D
5
6
O
O
5
6
L
L
H
H
D
H
H
X
Z
Notes:
D7
O
7
1. H = High Voltage Level, X = Dont Care,
L = Low Voltage Level, Z = High Impedance
PS2061B
01/18/99
1
PI74LPT541
3.3V 8-BIT BUFFER/LINE DRIVER
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 ...............................................................................120mA
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 condi-
tions above those indicated in the operational sec-
tions of this specification is not implied. Exposure to
absolute maximum rating conditions for extended
Power Dissipation.................................................................................... 1.0W periods may 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) Guaranteed Logic HIGH Level
Input HIGH Voltage (I/O pins)
2.2
2.0
0.5
5.5
5.5
0.8
V
V
V
VIL
IIH
IIL
Input LOW Voltage
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)
VCC = Max.
VCC = Max.
VCC = Max.
VCC = Max.
VCC = Max.
VCC = Max.
VIN = 5.5V
VIN = VCC
VIN = GND
VIN = GND
VOUT = 5.5V
VOUT = GND
36
50
±1
±1
±1
±1
±1
µA
µA
µA
µA
µA
µA
V
mA
mA
V
IOZH
IOZL
VIK
IODH
IODL
VOH
±1
Clamp Diode Voltage
Output HIGH Current
Output LOW Current
VCC = Min., IIN = 18mA
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
Output HIGH Voltage
VCC = Min.
IOH = 0.1mA Vcc-0.2
VIN = VIH or VIL
VCC = 3.0V,
VIN = VIH or VIL
VCC = Min.
VIN = VIH or VIL
IOH = 3mA
IOH = 8mA
IOH = 24mA
IOL = 0.1mA
IOL = 16mA
IOL = 24mA
2.4
2.4(5)
2.0
3.0
3.0
0.2
0.4
0.5
85
V
V
VOL
Output LOW Voltage
Short Circuit Current(4)
V
V
V
0.2
0.3
60
IOS
VCC = Max.(3), VOUT = GND
240
mA
IOFF
Power Down Disable
Input Hysteresis
VCC = 0V, VIN or VOUT ≤ 4.5V
150
±100
µA
mV
VH
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.
PS2061B
01/18/99
2
PI74LPT541
3.3V 8-BIT BUFFER/LINE DRIVER
Power Supply Characteristics
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
10
µA
∆ICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
100
ICCD
Dynamic Power Supply(4)
VCC = Max.,
VIN = VCC
50
75
µA/
Outputs Open
OEX = GND
VIN = GND
MHz
One Bit Toggling
50% Duty Cycle
IC
Total Power Supply
Current(6)
VCC = Max.,
Outputs Open
fI = 10 MHZ
50% Duty Cycle
OEX = GND
VIN = VCC 0.6V
VIN = GND
0.6
2.1
2.3
mA
One Bit Toggling
VCC = Max.,
Outputs Open
fI = 2.5 MHZ
50% Duty Cycle
OEX = GND
VIN = VCC 0.6V
VIN = GND
4.7(5)
8 Bits Toggling
Notes:
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
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
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.
PS2061B
01/18/99
3
PI74LPT541
3.3V 8-BIT BUFFER/LINE DRIVER
Switching Characteristics over Operating Range(1)
LPT541
Com.
LPT541A
Com.
LPT541C
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
1.5
1.5
6.0
1.5
1.5
1.5
4.8
6.2
5.6
0.5
1.5
1.5
1.5
4.1
tPZH
tPZL
Output Enable Time
OEx to Ox
Output Disable Time(4)
OEx to Ox
9.5
6.5
0.5
5.8
5.2
0.5
ns
tPHZ
tPLZ
tSK(o)
Output Skew(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
PS2061B
01/18/99
4
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