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DM74ALS258 - 3-STATE Quad 1-of-2-Line Data Selector/Multiplexer

Download the DM74ALS258 datasheet PDF. This datasheet also covers the DM74ALS257 variant, as both devices belong to the same 3-state quad 1-of-2-line data selector/multiplexer family and are provided as variant models within a single manufacturer datasheet.

General Description

These data selectors/multiplexers contain inverters and drivers to supply full on-chip data selection to the four 3STATE outputs that can interface directly with data lines of bus-organized systems.

A 4-bit word selected from one of two sources is routed to the four outputs.

Key Features

  • s Switching specifications at 50 pF s Switching specifications guaranteed over full tempera- ture and VCC range s Advanced oxide-isolated, ion-implanted Schottky TTL.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (DM74ALS257_FairchildSemiconductor.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Fairchild (now onsemi)

Part Number Description
DM74ALS251 3-STATE 1-of-8 Line Data Selector/Multiplexer
DM74ALS253 3-STATE Dual 1-of-4 Line Data Selector/Multiplexer
DM74ALS257 3-STATE Quad 1-of-2-Line Data Selector/Multiplexer
DM74ALS20A Dual 4-Input NAND Gate
DM74ALS21A Dual 4-Input AND Gate

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
DM74ALS257 • DM74ALS258 3-STATE Quad 1-of-2-Line Data Selector/Multiplexer April 1984 Revised February 2000 DM74ALS257 • DM74ALS258 3-STATE Quad 1-of-2-Line Data Selector/Multiplexer General Description These data selectors/multiplexers contain inverters and drivers to supply full on-chip data selection to the four 3STATE outputs that can interface directly with data lines of bus-organized systems. A 4-bit word selected from one of two sources is routed to the four outputs. The DM74ALS257 presents true data whereas the DM74ALS258 presents inverted data to minimize propagation delay time. This 3-STATE output feature means that n-bit (paralleled) data selectors with up to 258 sources can be implemented for data buses.