Encyclopedia Entry: 74AC11257PWR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic Multiplexer/Demultiplexer
• Characteristics: High-speed, low-power consumption
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: A multiplexer/demultiplexer IC that allows for efficient data routing and selection.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Logic Family: 74AC
• Number of Channels: 4
• Input Voltage Range: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 5.5 ns (typical)
• Output Drive Capability: ±24 mA
• Supply Voltage: 2V to 6V

Detailed Pin Configuration

The 74AC11257PWR IC has a total of 16 pins, which are arranged as follows:

┌───┐ Y1 ─┤1 16├─ VCC Y2 ─┤2 15├─ GND Y3 ─┤3 14├─ S0 Y4 ─┤4 13├─ S1 GND ─┤5 12├─ S2 A1 ─┤6 11├─ S3 A2 ─┤7 10├─ OE# A3 ─┤8 9├─ Y0 └───┘

Functional Features

• The 74AC11257PWR is a 4-channel multiplexer/demultiplexer IC.
• It allows for the selection of one of four input channels to be routed to the output.
• The selection is controlled by the S0, S1, S2, and S3 pins.
• The OE# (Output Enable) pin enables or disables the outputs.
• The IC operates at high speed with low power consumption.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data routing. - Low power consumption helps in reducing overall energy usage. - Wide operating voltage range makes it compatible with various systems. - Compact TSSOP package saves board space.

Disadvantages: - Limited number of channels may not be suitable for applications requiring more inputs/outputs. - Propagation delay of 5.5 ns may affect timing-sensitive applications.

Working Principles

The 74AC11257PWR functions as a multiplexer/demultiplexer by utilizing its internal logic circuitry. The S0, S1, S2, and S3 pins control the selection of the desired input channel, which is then routed to the corresponding output pin. The OE# pin enables or disables the outputs. The IC operates on a supply voltage between 2V and 6V, allowing for compatibility with a wide range of digital systems.

Detailed Application Field Plans

The 74AC11257PWR finds applications in various digital systems where efficient data routing and selection are required. Some potential application fields include: - Data communication systems - Multiplexing audio/video signals - Address decoding in microcontrollers - Data acquisition systems - Industrial automation

Detailed and Complete Alternative Models

• 74HC11257PWR: Similar functionality but operates at a lower voltage range (2V to 5.5V).
• 74ACT11257PWR: Similar functionality but operates at a higher speed with slightly increased power consumption.
• 74LVC11257PWR: Similar functionality but operates at a lower voltage range (1.65V to 5.5V) with reduced power consumption.

(Note: The above alternative models are just examples and not an exhaustive list.)

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Word Count: 430 words