PI74FCT3244R 데이터 시트보기 (PDF) - Pericom Semiconductor

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PI74FCT3244R

Fast CMOS 3.3V 8-Bit Buffer/Line Driver

Pericom Semiconductor 

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Fast CMOS 3.3V 8-Bit

Buffer/Line Driver

Features

• Advanced Low Power CMOS operation

• Compatible with LVC class of products

• Compatible with industry standard octal pinouts

• Excellent output drive capability:

Balanced Drives (24mA sink and source)

• Can serve as a 5V to 3V translator

• Inputs can be driven by 3.3 V or 5V devices

• 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 150 mil wide plastic TQSOP (R)

– 20-pin 300 mil wide plastic SOIC (S)

Description

Pericom Semiconductor’s PI74FCT3 series of logic circuits are

produced in the Company’s advanced 0.6 micron CMOS technology,

achieving industry leading speed grades.

The PI74FCT3244 is an 8-bit buffer/line driver designed for 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.

The PI74FCT3244 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.

Logic Block Diagram

OEA

DA0

OB0

DA1

OB1

DA2

OB2

DA3

OB3

Pin Configuration

OEB

20-PIN

OA0

L20

Q20

R20

DB0

S20

OA1

Pin Description

Pin Name

OEA, OEB

Dxx

Oxx

GND

VCC

Description

3-State Output Enable

Inputs (Active LOW)

Inputs

Outputs

Ground

Power

DB1

OA2 Truth Table(1)

Inputs

Outputs

DB2

OEA

OEB

DXX

OXX

L

L

L

L

OA3

L

L

H

H

H

H

X

Z

DB3

Note:

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

L = Low Voltage Level, Z = High Impedance

1

PS7067E 11/09/98

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