Quad 2-Input Multiplexer with 3-State Output

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Overview

The MC74AC257/74ACT257 is a quad 2-input multiplexer with 3-state outputs. Four bits of data from two sources can be selected using a Common Data Select input. The four outputs present the selected data in true (noninverted) form. The outputs may be switched to a high impedance state by placing a logic HIGH on the common Output Enable (OE) input, allowing the outputs to interface directly with bus-oriented systems.

  • Multiplexer Expansion by Tying Outputs Together
  • Noninverting 3-State Outputs
  • Outputs Source/Sink 24 mA
  • ACT257 Has TTL Compatible Inputs
  • These devices are available in Pb-free package(s). Specifications herein apply to both standard and Pb-free devices. Please see our website at www.onsemi.com for specific Pb-free orderable part numbers, or contact your local ON Semiconductor sales office or representative.

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VCC Max (V)

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MC74ACT257DG

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CAD Model

Pb

A

H

P

SOIC-16

1

260

TUBE

48

N

4

4.5

5.5

10.5

24

Price N/A

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MC74ACT257DR2G

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CAD Model

Pb

A

H

P

SOIC-16

1

260

REEL

2500

N

4

4.5

5.5

10.5

24

$0.2667

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