Bus Transceivers | MM74HC245A

Octal 3-STATE Transceiver

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Overview

The MM74HC245A 3-STATE bidirectional buffer utilizes advanced silicon-gate CMOS technology, and is intended for two-way asynchronous communication between data buses. It has high drive current outputs which enable high speed operation even when driving large bus capacitances. This circuit possesses the low power consumption and high noise immunity usually associated with CMOS circuitry, yet has speeds comparable to low power Schottky TTL circuits. This device has an active LOW enable input G# and a direction control input, DIR. When DIR is HIGH, data flows from the A inputs to the B outputs. When DIR is LOW, data flows from the B inputs to the A outputs. The MM74HC245A transfers true data from one bus to the other. This device can drive up to 15 LS-TTL Loads, and does not have Schmitt trigger inputs. All inputs are protected from damage due to static discharge by diodes to VCC and ground.

  • This product is general usage and suitable for many different applications.
  • Typical propagation delay: 13 ns
  • Wide power supply range: 2-6V
  • Low quiescent current: 80 µA maximum (74 HC)
  • 3-STATE outputs for connection to bus oriented systems
  • High output drive: 6 mA (minimum)
  • Same as the 645

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CAD Models

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Output

VCC Min (V)

VCC Max (V)

tpd Max (ns)

IO Max (mA)

Pricing ($/Unit)

MM74HC245AWMX

Active

CAD Model

Pb

A

H

P

SOIC-20W

751BJ

3

260

REEL

1000

N

8

3-State

2

6

15

7.8

$0.3188

More Details

MM74HC245AMTCX

Active

CAD Model

Pb

A

H

P

TSSOP-20

948AQ

1

260

REEL

2500

N

8

3-State

2

6

15

7.8

$0.3503

More Details

MM74HC245AWM

Active

CAD Model

Pb

A

H

P

SOIC-20W

751D-05

3

260

TUBE

38

N

8

3-State

2

6

15

7.8

$0.4321

More Details

MM74HC245AMTC

Active

CAD Model

Pb

A

H

P

TSSOP-20

9.48

1

260

TUBE

75

N

8

3-State

2

6

15

7.8

$0.3387

More Details

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