PI74LPT162Q952BV [ETC]

Dual 8-bit Bus Transceiver ; 双8位总线收发器\n


型号：	PI74LPT162Q952BV
厂家：	ETC
描述：	Dual 8-bit Bus Transceiver 双8位总线收发器\n 总线收发器逻辑集成电路
文件：	总5页 (文件大小：325K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

PI74LPT162Q952

Fast CMOS 3.3V

16-Bit Registered Transceivers

ProductFeatures

ProductDescription

CompatiblewithLCXandLVTfamiliesofproducts

Pericom Semiconductors PI74LPT series of logic circuits are

producedintheCompanysadvanced0.6micronCMOStechnology,

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 PI74LPT162Q952 has 16-bit registered transceivers organized

with two sets of eight D-type latches with separate input and output

controls for each set. For data flow from A to B, for example, the

A-to-BEnable(xCEAB)inputmustbeLOWtoenterdatafromxAx.

ThedatapresentontheAportwillbeclockedontheBregisterwhen

xCLKABtogglesfromLOW-to-HIGH.ThexOEABcontrolperforms

the output enable function on the B port. Control of data from B to

Aissimilar, butusesthexCEAB, xCLKAB, andxOEABinputs. By

connecting the control pins of the two independent transceivers

together, a full 16-bit operation can be achieved. The output buffers

are designed with a Power-Off disable allowing live insertion of

boards when used as backplane drivers.

Advanced Low Power CMOS Operation

Excellentoutputdrivecapability:

Balanced drives (12mA sink and source)

25-Ohm Series resistor on outputs to reduce

overshoot and undershoot

Pin compatible with industry standard

double-density pinouts

Low ground bounce outputs

Hysteresis on all inputs

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

ThePI74LPT162Q952canbedrivenfromeither3.3Vor5.0Vdevices

allowing this device to be used as a translator in a mixed

3.3/5.0Vsystem.

Multiple center pins and distributed Vcc/GND pins

minimizeswitchingnoise

Packagesavailable:

56-pin240milwideplasticTSSOP(A)

56-pin300milwideplasticSSOP(V)

LogicBlockDiagram

1OEBA

2OEBA

1CEBA

2CEBA

CLKBA

OEAB

CEAB

CLKBA

OEAB

CEAB

1CLKAB

2CLKAB

1A0

2A0

2B0

TO 7 OTHER CHANNELS

PS8098A

02/25/97

PI74LPT162Q952

3.3V 16-Bit Registered Transceivers

TruthTable^(1,2)

ProductPinDescription

Pin Name

Description

Inputs

xCEAB xCLKAB xOEAB

Outputs

xBx

B⁽³⁾

xOEAB

A-to-B Output Enable Input (Active LOW)

B-to-A Output Enable Input (Active LOW)

A-to-B Clock Enable Input (Active LOW)

B-to-A Clock Enable Input (Active LOW)

A-to-B Clock Input

xAx

OEBA

CEAB

xCEBA

CLKAB

CLKBA

↑

B⁽³⁾

↑

B-to-A Clock Input

High-Z

A-to-B Data Inputs or B-to-A 3-State Outputs

B-to-A Data Inputs or B-to-A 3-State Outputs

Ground

Notes:

1. H=HighVoltageLevel

L=LowVoltageLevel

GND

X = Dont Care or Irrelevant

↑ =LOW-to-HIGHTransition

Z = High Impedance

Power

2. A-to-B data flow shown. B-to-A flow control

isthesame,exceptusingxCEBA,xCLKBA,

andxOEBA.

ProductPinConfiguration

3. Level of B before the indicated steady-state

input conditions were established.

1OEAB

1CLKAB

1CEAB

GND

1A0

1OEBA

1CLKBA

1CEBA

GND

52 1B0

1A1

1B1

50 VCC

49 1B2

48 1B3

47 1B4

VCC

1A2

1A3

1A4

56-Pin

A,V

GND

1B5

1B6

1B7

GND

1A5

1A6

1A7

2A0 15

2A1 16

42 2B0

2B1

40 2B2

39 GND

2A2

GND

2A3

2B3

2B4

2A4

2A5 21

VCC 22

36 2B5

35 VCC

2A6

2A7

2B6

33 2B7

31 2CEBA

2CLKBA

29 2OEBA

GND

2CEAB 26

2CLKAB

2OEAB 28

PS8098A

02/25/97

PI74LPT162Q952

3.3V 16-Bit Registered Transceivers

MaximumRatings

(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

RATINGSmaycausepermanentdamagetothedevice.

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

maximumratingconditionsforextendedperiodsmay

affectreliability.

DCElectricalCharacteristics(OvertheOperatingRange,TA =40°Cto+85°C,VCC =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

3.0

±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⁾

1.2

110

100

VCC =Min.

IOH=12.0mA

2.4

VIN =VIH orVIL

VCC =Min.

VOL

Output LOW Voltage

IOL=12.0mA

0.40

0.55

VIN =VIH orVIL

VCC =Max.⁽³⁾,VOUT ≤GND 60

VCC =0V,VIN orVOUT 4.5V

IOS

IOFF

Short Circuit Current⁽⁴⁾

PowerDownDisable

Input Hysteresis

240

150

±100

µA

Notes:

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

2. TypicalvaluesareatVcc=3.3V,+25°Cambientandmaximumloading.

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.

PS8098A 02/25/97

PI74LPT162Q952

3.3V 16-Bit Registered Transceivers

PowerSupplyCharacteristics

Parameters Description

TestConditions⁽¹⁾

VCC =Max.

Min. Typ⁽²⁾Max.

Units

µA

ICC

Quiescent Power Supply Current

VIN =GNDorVCC

VIN =VCC 0.6V⁽³⁾

0.1

2.0

∆I^CC

Quiescent Power Supply Current

TTLInputsHIGH

VCC =Max.

µA

ICCD

DynamicPowerSupply⁽⁴⁾

VCC =Max.,

VIN=VCC

µA/

Outputs Open

XOE=GND

VIN=GND

MHz

One Bit Toggling

50% Duty Cycle

Total Power Supply

Current⁽⁶⁾

VCC = Max.,

Outputs Open

fI = 10 MHZ

VIN = VCC 0.6V

VIN = GND

0.6

2.3

50% Duty Cycle

XOE = GND

One Bit Toggling

VCC = Max.,

Outputs Open

fI = 2.5 MHZ

50% Duty Cycle

XOE = GND

VIN = VCC 0.6V

VIN = GND

2.1

4.7⁽⁵⁾

16 Bits Toggling

Notes:

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

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

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. I^C=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.

PS8098A

02/25/97

PI74LPT162Q952

3.3V 16-Bit Registered Transceivers

SwitchingCharacteristicsoverOperatingRange⁽¹⁾

LPT162Q952A

Com.

Min.⁽³⁾

LPT162Q952B

Com.

Min.⁽³⁾

LPT162Q952C

Com.

Parameters

Description

Conditions⁽²⁾

Max.

Min.⁽³⁾

Max.

Units

PLH

PHL

PZH

PZL

PHZ

PLZ

PropagationDelay

= 50pF

2.0

1.5

2.5

2.0

3.0

10.0

2.0

1.5

2.5

2.0

3.0

7.5

2.0

6.3

CLKAB,

Output Enable Time

OEBA, OEAB to

Output Disable Time⁽⁴⁾

OEBA, OEAB to

CLKBAto

=500

Ω

10.5

10.0

8.0

7.5

1.5

2.5

2.0

3.0

7.0

6.5

Set-up Time HIGH or LOW

xAx, xBx to xCLKAB, xCLKBA

Hold Time HIGH or LOW

xAx, xBx to xCLKAB, xCLKBA

Setup Time HIGH or LOW

xCEAB, xCEBA to

xCLKAB, xCLKBA

Hold Time HIGH or LOW

xCEAB, xCEBA to

2.0

xCLKAB, xCLKBA

Pulse Width HIGH⁽⁴⁾or

LOW, xCLKAB or xCLKBA

Output Skew⁽⁵⁾

3.0

SK(o)

0.5

Notes:

1. PropagationDelaysandEnable/DisabletimesarewithVcc=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.

Capacitance(TA =25°C,F=1MHz)

Parameters⁽¹⁾

Description

Test Conditions

Typ.

4.5

Max.

Units

Input Capacitance

Output Capacitance

VIN = 0V

OUT

ut = 0V

5.5

Note:

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

Pericom Semiconductor Corporation

2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com

PS8098A 02/25/97

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