SN74AC373N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Octal Transparent D-Type Latches with 3-State Outputs
• Characteristics:
  • High-speed operation
  • 3-state outputs for bus-oriented applications
  • Common latch enable input
  • Eight latches in a single package
• Package: DIP-20 (Dual In-Line Package with 20 pins)
• Essence: The SN74AC373N is an integrated circuit that provides eight transparent D-type latches with 3-state outputs. It is commonly used in bus-oriented applications where multiple devices need to share data on a common bus.

Specifications

• Supply Voltage Range: 2 V to 6 V
• Input Voltage Range: 0 V to VCC
• Output Voltage Range: 0 V to VCC
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 125 MHz
• Maximum Propagation Delay: 5.8 ns

Pin Configuration

The SN74AC373N has a total of 20 pins, which are arranged as follows:

+---+--+---+ OE1 |1 +--+ 20| VCC OE2 |2 19| D7 A1 |3 18| D6 A2 |4 17| D5 A3 |5 16| D4 A4 |6 15| D3 A5 |7 14| D2 A6 |8 13| D1 A7 |9 12| D0 GND |10 11| LE +----------+

Functional Features

• Octal transparent D-type latches with 3-state outputs
• Latch enable (LE) input for data storage
• Output enable (OE1 and OE2) inputs for 3-state control
• High-speed operation with a maximum clock frequency of 125 MHz
• Common latch enable input for simultaneous updating of all latches

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - 3-state outputs enable bus-oriented applications - Common latch enable input simplifies control logic

Disadvantages: - Limited voltage range (2 V to 6 V) - Maximum propagation delay of 5.8 ns may not be suitable for extremely time-critical applications

Working Principles

The SN74AC373N operates by storing data in its eight transparent D-type latches. When the latch enable (LE) input is high, the data on the D0-D7 inputs is transferred to the corresponding latch outputs. The output enable (OE1 and OE2) inputs control the 3-state outputs, allowing multiple devices to share a common bus without interfering with each other.

Detailed Application Field Plans

The SN74AC373N is commonly used in various applications, including: - Data buses in microprocessors and microcontrollers - Memory systems - Input/output (I/O) interfaces - Address decoding circuits - Register banks

Detailed and Complete Alternative Models

Some alternative models that provide similar functionality to the SN74AC373N include: - 74HC373: Octal D-type transparent latch with 3-state outputs - CD74ACT373: Octal transparent latch with 3-state outputs - MC74AC373: Octal D-type latch with 3-state outputs

These alternative models can be considered based on specific requirements and availability.

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