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MC74AC257 - QUAD 2-INPUT MULTIPLEXER

Download the MC74AC257 datasheet PDF. This datasheet also covers the MC74ACT257 variant, as both devices belong to the same quad 2-input multiplexer family and are provided as variant models within a single manufacturer datasheet.

General Description

The MC74AC257/74ACT257 is a quad 2-input multiplexer with 3-state outputs.

It selects four bits of data from two sources under control of a Common Data Select input.

When the Select input is LOW, the I0x inputs are selected and when Select is HIGH, the I1x inputs are selected.

Key Features

  • IONS A AND B DO NOT.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MC74ACT257_Motorola.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
MC74AC257 QUAD 2-INPUT MULTIPLEXER ON Semiconductor
MC74AC253 DUAL 4-INPUT MULTIPLEXER ON Semiconductor
MC74AC259 8-BIT ADDRESSABLE LATCH ON Semiconductor
MC74AC20 Dual 4-Input NAND Gate ON Semiconductor
MC74AC240 Octal Buffer/Line Driver ON Semiconductor

Other Datasheets by Motorola Semiconductor (now NXP Semiconductors)

Part Number Description
MC74AC251 8-Input Multiplexer
MC74AC253 DUAL 4-INPUT MULTIPLEXER
MC74AC256 DUAL 4-BIT ADDRESSABLE LATCH
MC74AC258 QUAD 2-INPUT MULTIPLEXER
MC74AC259 8-BIT ADDRESSABLE LATCH

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
( DataSheet : www.DataSheet4U.com ) MC74AC257 MC74ACT257 Quad 2ĆInput Multiplexer with 3ĆState Outputs 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.