PI74LPT240AL [PERICOM]

Bus Driver, LPT Series, 2-Func, 4-Bit, Inverted Output, CMOS, PDSO20, 0.173 INCH, PLASTIC, TSSOP-20;


型号：	PI74LPT240AL
厂家：	PERICOM SEMICONDUCTOR CORPORATION
描述：	Bus Driver, LPT Series, 2-Func, 4-Bit, Inverted Output, CMOS, PDSO20, 0.173 INCH, PLASTIC, TSSOP-20 驱动光电二极管逻辑集成电路
文件：	总4页 (文件大小：229K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

PI74LPT240

Fast CMOS 3.3V 8-Bit

InvertingBufferLineDriver

PI74LPT240

Fast CMOS 3.3V 8-Bit

Inverting Buffer/Line Driver

Product Features

Product Description

CompatiblewithLCXandLVTfamiliesofproducts

Pericom Semiconductors PI74LPT series of logic circuits are

produced using 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

ThePI74LPT240isan8-bitinvertingbuffer/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.

Advanced Low-Power CMOSOperation

Excellentoutputdrivecapability:

Balanced drives (24mA sink and source)

Low ground bounce outputs

Hysteresis on all inputs

The PI74LPT240can 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.

Industrial operating temperature range: 40°C to +85°C

Packagesavailable:

20-pin173milwideplasticTSSOP(L)

20-pin150milwideplasticQSOP(Q)

20-pin150milwideplasticTQSOP(R)

20-pin300milwideplasticSOIC(S)

Logic Block Diagram

Product Pin Description

Product Pin Configuration

Pin Name

Description

OEA

DA0

OB0

DA1

OB1

DA2

OB2

DA3

OB3

GND

VCC

OEB

OA0

DB0

OA1

DB1

OA2

DB2

OA3

DB3

OEA, OEB

3-State Output Enable

Inputs (Active LOW)

Dxx

Oxx

GND

VCC

Inputs

Outputs

Ground

Power

20-Pin

L,Q

R,S

Truth Table⁽¹⁾

Inputs

Outputs

OEA

OEB

DXX

OXX

Note:

1. H = High Voltage Level, X = Don't Care,

L = Low Voltage Level, Z = High Impedance

PS8476

04/26/00

PI74LPT240

Fast CMOS 3.3V 8-Bit

InvertingBufferLineDriver

Maximum Ratings

(Above which the useful life may be impaired. For user guidelines, not tested.)

Storage Temperature ................................................................ 65°Cto+150°C

Ambient Temperature with Power Applied ................................40°Cto+85°C

Supply Voltage to Ground Potential (Inputs & Vcc Only) .......... 0.5Vto+7.0V

Supply Voltage to Ground Potential (Outputs & D/O Only) ....... 0.5Vto+7.0V

DC Input Voltage ........................................................................0.5Vto+7.0V

DC Output Current ................................................................................. 120mA

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 condi-

tions above those indicated in the operational

sectionsofthisspecificationisnotimplied. Exposure

to absolute maximum rating conditions for extended

periodsmayaffectreliability.

DCElectricalCharacteristics(OvertheOperatingRange, T_A=40°Cto+85°C, V_CC=2.7Vto3.6V)

Parameters

Description

TestConditions⁽¹⁾

Min.

Typ⁽²⁾Max.

Units

V^IH

Input HIGH Voltage (Input pins)

InputHIGHVoltage(I/Opins)

Input LOW Voltage

GuaranteedLogicHIGHLevel

2.2

2.0

0.5

5.5

0.8

V^IL

IIH

IIL

GuaranteedLogicLOWLevel

(Input and I/O pins)

Input HIGH Current (Input pins)

InputHIGHCurrent(I/Opins)

Input LOW Current (Input pins)

Input LOW Current (I/O pins)

High Impedance Output Current

(3-State Output pins)

ClampDiodeVoltage

OutputHIGHCurrent

Output LOW Current

OutputHIGHVoltage

VCC=Max.

VIN=5.5V

±1

µA

VCC=Max.

VIN =VCC

VCC=Max.

VCC =Max.

VIN=GND

VOUT =5.5V

VOUT =GND

IOZH

IOZL

VIK

IODH

IODL

VOH

±1

VCC = Min., IIN =18mA

VCC =3.3V,VIN =VIHorVIL,VO=1.5V⁽³⁾

VCC =3.3V,VIN=VIHorVIL,VO=1.5V⁽³⁾

0.7

1.2

110

200

VCC =Min.

IOH = 0.1 mA Vcc-0.2

VIN =VIH orVIL

V^CC=3.0V,

VIN =VIH orVIL

VCC =Min.

VIN =VIH orVIL

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

3.0

0.2

0.4

0.5

±100

VOL

Output LOW Voltage

0.2

0.3

240

IOS

IOFF

Short Circuit Current⁽⁴⁾

PowerDownDisable

Input Hysteresis

VCC =Max.⁽³⁾,VOUT = GND 60

VCC =0V,VIN orVOUT ≤4.5V

µA

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. V_OH= V_CC 0.6V at rated current.

Capacitance (TA = 25°C, f = 1 MHz)

Parameters⁽¹⁾

Description

TestConditions

Typ

Max.

Units

C_IN

Input Capacitance

Output Capacitance

V_IN=0V

4.5

5.5

C_OUT

V_OUT= 0V

Note:

1. This parameter is determined by device characterization but is not production tested.

PS8476

04/26/00

PI74LPT240

Fast CMOS 3.3V 8-Bit

InvertingBufferLineDriver

PowerSupplyCharacteristics

(1)

TestConditions

(2)

Parameters Description

Min. Typ

Max.

Units

µA

I_CC

Quiescent Power Supply Current

V_CC=Max.

V_IN=GNDorV_CC

0.1

2.0

(3)

∆I_CC

Quiescent Power Supply Current

TTLInputsHIGH

V_CC=Max.

V_IN= V_CC 0.6V

µA

(4)

I_CCD

DynamicPowerSupply

V_CC=Max.,

V_IN=V_CC

µA/

Outputs Open

OEX=GND

One Bit Toggling

50%DutyCycle

V_IN=GND

MHz

I_C

Total Power Supply

Current

V_CC=Max.,

Outputs Open

f_I= 10 MHZ

50%DutyCycle

OEX=GND

V_IN=V_CC0.6V

V_IN=GND

0.6

2.3

(6)

One Bit Toggling

(5)

V_CC=Max.,

V_IN=V_CC0.6V

V_IN=GND

2.1

4.7

Outputs Open

f_I= 2.5 MHZ

50%Duty Cycle

OEX=GND

8 Bits Toggling

Notes:

1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.

2. TypicalvaluesareatV =3.3V,+25°Cambient.

3. Per TTL driven input; all other inputs at V 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. I =I_QUIESCENT+ I_INPUTS+ I_DYNAMIC

I = I + ∆I D N + I

(f /2 + f_IN_I)

and I Z)

CCH CC

CCD CP

= Quiescent Current (I L, I

∆I = Power Supply Current for a TTL High Input

D = Duty Cycle for TTL Inputs High

N = Number of TTL Inputs at D

= Dynamic Current Caused by an Input Transition Pair (HLH or LHL)

= Clock Frequency for Register Devices (Zero for Non-Register Devices)

= Number of Clock Inputs at f

CCD

f = Input Frequency

N = Number of Inputs at f

All currents are in milliamps and all frequencies are in megahertz.

PS8476

04/26/00

PI74LPT240

Fast CMOS 3.3V 8-Bit

InvertingBufferLineDriver

(1)

SwitchingCharacteristicsoverOperatingRange

LPT240

Com.

LPT240A

Com.

LPT240C

Com.

(2)

(3)

Parameters Description

Conditions

Min.

Max.

Min.

Max.

Min.

Max.

Units

Propagation Delay

CL = 50pF

RL =500Ω

1.5

6.5

1.5

4.8

6.2

5.6

0.5

1.5

4.3

n s

PLH

PHL

DXX to OXX

OutputEnableTime

OExtoOxx

1.5

8.0

7.0

0.5

1.5

5.8

5.2

0.5

n s

PZH

PZL

(4)

Output Disable Time

OExtoOxx

PHZ

PLZ

(5)

(o)

Output Skew

Notes:

1. PropagationDelaysandEnable/DisabletimesarewithV =3.3V±0.3V, normalrange.

For V = 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

PS8476

04/26/00

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