SN74HC373DWRE4

Product Overview

• Category: Integrated Circuit
• Use: Octal Transparent D-Type Latches with 3-State Outputs
• Characteristics:
  • High-Speed CMOS Logic
  • Eight Latches in a Single Package
  • 3-State Outputs for Bus-Oriented Applications
  • Output Drive Capability: 15 LSTTL Loads
  • Low Power Consumption
  • Typical Propagation Delay: 13 ns
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The SN74HC373DWRE4 is an integrated circuit that contains 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: 2V to 6V
• Input Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Output Current: ±6mA
• Maximum Propagation Delay: 25ns
• Maximum Quiescent Current: 8µA

Pin Configuration

The SN74HC373DWRE4 has a total of 20 pins, which are arranged as follows:

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

Functional Features

• Octal Transparent D-Type Latches: The SN74HC373DWRE4 contains eight latches that can store data when the latch enable input (LE) is high.
• 3-State Outputs: The outputs of the latches can be put into a high-impedance state using the output enable input (OE), allowing multiple devices to share a common bus without interfering with each other.
• High-Speed CMOS Logic: The integrated circuit operates at high speeds, making it suitable for applications that require fast data transfer.
• Low Power Consumption: The SN74HC373DWRE4 is designed to consume minimal power, making it energy-efficient.

Advantages and Disadvantages

Advantages: - High-speed operation - 3-state outputs for bus-oriented applications - Low power consumption

Disadvantages: - Limited output drive capability - Maximum propagation delay may not be suitable for extremely time-critical applications

Working Principles

The SN74HC373DWRE4 works by storing data in its eight transparent D-type latches. When the latch enable input (LE) is high, the data inputs (D0-D7) are transferred to the corresponding latch outputs (Q0-Q7). The output enable input (OE) controls whether the latch outputs are active or in a high-impedance state.

Detailed Application Field Plans

The SN74HC373DWRE4 is commonly used in various applications, including: - Data storage and retrieval systems - Address decoding circuits - Bus interface units - Memory modules - Microprocessor-based systems

Alternative Models

Some alternative models that can be used as replacements for the SN74HC373DWRE4 include: - 74HC373: This is a similar octal transparent latch with 3-state outputs, but it operates at a lower voltage range of 2V to 5.5V. - CD74HC373: Another octal transparent latch with 3-state outputs, but it has a wider operating temperature range of -55°C to +125°C.

These alternative models provide similar functionality and can be used as drop-in replacements in many applications.

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