IN74ACT245N 데이터 시트보기 (PDF) - Integral Corp.

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IN74ACT245N

OCTAL 3-STATE NONINVERTING BUS TRANSCEIVER

Integral Corp. 

IN74ACT245

OCTAL 3-STATE NONINVERTING

BUS TRANSCEIVER

High-Speed Silicon-Gate CMOS

The IN74ACT245 is identical in pinout to the LS/ALS245,

HC/HCT245. The IN74ACT245 may be used as a level converter

for interfacing TTL or NMOS outputs to High Speed CMOS

inputs.

The IN74ACT245 is a 3-state noninverting transceiver that is

used for 2-way asynchronous communication between data

buses. The device has an active-low Output Enable pin, which is

used to place the I/O ports into high-impedance states. The

Direction control determines whether data flows from A to B or

from B to A.

• TTL/NMOS Compatible Input Levels

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 4.5 to 5.5 V

• Low Input Current: 1.0 µA; 0.1 µA @ 25°C

• Outputs Source/Sink 24 mA

ORDERING INFORMATION

IN74ACT245N Plastic

IN74ACT245DW SOIC

TA = -40° to 85° C for all

packages

PIN ASSIGNMENT

LOGIC DIAGRAM

PIN 20=VCC

PIN 10 = GND

FUNCTION TABLE

Control Inputs

Output Direction

Operation

Enable

L

L

Data Transmitted

from Bus B to Bus A

L

H

Data Transmitted

from Bus A to Bus B

H

X

Buses Isolated (High

Impedance State)

X = don’t care

1

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