Encyclopedia Entry: 74AC373SJX

Product Overview

Category

The 74AC373SJX belongs to the category of integrated circuits (ICs), specifically flip-flops.

Use

This IC is commonly used in digital electronics for storing and transferring data in sequential logic circuits.

Characteristics

• The 74AC373SJX is a high-speed, octal transparent latch with three-state outputs.
• It operates on a wide voltage range, typically between 2V and 6V.
• This IC offers low power consumption and high noise immunity.
• It is designed to be compatible with both TTL and CMOS logic families.

Package and Quantity

The 74AC373SJX is available in a standard 20-pin small outline package (SOP). It is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to VCC
• Low-Level Input Voltage: GND to 0.8V
• Output Voltage Range: GND to VCC
• Maximum Operating Frequency: 100 MHz
• Maximum Propagation Delay: 10 ns

Pin Configuration

The 74AC373SJX has a total of 20 pins, each serving a specific function. The detailed pin configuration is as follows:

1. D0 - Data Input 0
2. D1 - Data Input 1
3. D2 - Data Input 2
4. D3 - Data Input 3
5. D4 - Data Input 4
6. D5 - Data Input 5
7. D6 - Data Input 6
8. D7 - Data Input 7
9. GND - Ground
10. Q0 - Output 0
11. Q1 - Output 1
12. Q2 - Output 2
13. Q3 - Output 3
14. Q4 - Output 4
15. Q5 - Output 5
16. Q6 - Output 6
17. Q7 - Output 7
18. OE - Output Enable
19. CP - Clock Pulse Input
20. VCC - Supply Voltage

Functional Features

• The 74AC373SJX operates as an eight-bit transparent latch.
• It allows data to be stored or transferred based on the clock pulse input (CP) and output enable (OE) signals.
• When the OE signal is low, the latch is transparent, allowing data to pass from the inputs to the outputs.
• When the OE signal is high, the latch holds the previously stored data.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data transfer.
• Wide voltage range compatibility makes it versatile for various applications.
• Low power consumption helps conserve energy.
• Three-state outputs provide flexibility in connecting multiple devices.

Disadvantages

• Limited maximum operating frequency compared to some other flip-flop ICs.
• May require additional components for certain complex applications.

Working Principles

The 74AC373SJX functions as a transparent latch by utilizing flip-flop circuitry. When the clock pulse input (CP) is triggered, the latch captures the data present at the inputs and stores it until the next clock pulse. The output enable (OE) signal controls whether the stored data is visible at the outputs or not.

Application Field Plans

The 74AC373SJX finds extensive use in various digital systems, including but not limited to: - Microprocessors and microcontrollers - Data storage and retrieval systems - Communication equipment - Industrial automation - Consumer electronics

Alternative Models

For similar functionality, the following alternative models can be considered: - 74HC373: Compatible with CMOS logic family, higher operating frequency. - 74LS373: Compatible with TTL logic family, lower power consumption.

In conclusion, the 74AC373SJX is a versatile and widely used octal transparent latch IC. Its high-speed operation, wide voltage range compatibility, and three-state outputs make it suitable for numerous digital applications. However, it is important to consider alternative models based on specific requirements such as operating frequency and power consumption.