Encyclopedia Entry: 74ABT373CMSAX

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Data Storage and Transfer
• Characteristics: High-speed, Octal Transparent Latch with 3-State Outputs
• Package: Surface Mount, 48-Terminal Fine-Pitch Ball Grid Array (FBGA)
• Essence: The 74ABT373CMSAX is a high-performance latch designed for data storage and transfer applications. It offers fast operation and 3-state outputs for efficient data handling.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Logic Family: ABT
• Number of Bits: 8 (Octal)
• Latch Type: Transparent
• Output Type: 3-State
• Operating Voltage Range: 4.5V to 5.5V
• Input/Output Compatibility: TTL, CMOS
• Propagation Delay Time: 2.5 ns (Max)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74ABT373CMSAX has a total of 48 pins, which are assigned specific functions as follows:

1. OE (Output Enable) - Output Enable Control Input
2. D0-D7 (Data Inputs) - Eight Data Inputs
3. Q0-Q7 (Outputs) - Eight Latched Outputs
4. LE (Latch Enable) - Latch Enable Control Input
5. GND (Ground) - Ground Reference
6. VCC (Power Supply) - Positive Power Supply

Please refer to the datasheet for a complete pin configuration diagram.

Functional Features

• Transparent Latching: The latch allows data inputs to pass through to the outputs when the latch enable (LE) input is high.
• 3-State Outputs: The 74ABT373CMSAX offers three-state outputs, allowing multiple devices to share a common bus without interference.
• High-Speed Operation: With a maximum propagation delay of 2.5 ns, this IC ensures efficient data transfer in time-critical applications.
• Wide Operating Voltage Range: The IC can operate within the voltage range of 4.5V to 5.5V, making it compatible with various systems.

Advantages and Disadvantages

Advantages: - High-speed operation enables fast data transfer. - Three-state outputs allow for efficient bus sharing. - Wide operating voltage range provides compatibility with different systems.

Disadvantages: - Limited number of bits (8) may not be suitable for applications requiring larger data storage.

Working Principles

The 74ABT373CMSAX is based on transparent latch architecture. When the latch enable (LE) input is high, the data inputs (D0-D7) are passed through to the latched outputs (Q0-Q7). The outputs remain latched until the LE input goes low, holding the last valid data. The output enable (OE) input controls the state of the outputs, enabling or disabling their functionality.

Detailed Application Field Plans

The 74ABT373CMSAX finds applications in various fields, including:

1. Microprocessor Systems: Used for data storage and transfer between microprocessors and peripheral devices.
2. Data Communication: Enables efficient data handling in communication systems, such as routers and switches.
3. Industrial Automation: Facilitates data transfer and storage in control systems and PLCs (Programmable Logic Controllers).
4. Test and Measurement Equipment: Provides reliable data storage and transfer capabilities in testing and measurement instruments.

Detailed and Complete Alternative Models

1. 74ACT373: Similar octal transparent latch with 3-state outputs, compatible with 5V systems.
2. 74HC373: Octal transparent latch with 3-state outputs, designed for high-speed CMOS logic.
3. 74LS373: Octal transparent latch with 3-state outputs, compatible with low-power TTL logic.

These alternative models offer similar functionality and can be considered based on specific system requirements.

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