SN74HC373DWG4

Product Overview

• Category: Integrated Circuit (IC)
• 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
  • Common Output Enable Control
  • Non-Inverting Outputs
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: The SN74HC373DWG4 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
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to 85°C
• Maximum Clock Frequency: 80 MHz
• Maximum Propagation Delay: 18 ns

Pin Configuration

The SN74HC373DWG4 has a total of 20 pins. The detailed pin configuration is 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. LE (Latch Enable)
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. VCC (Supply Voltage)

Functional Features

• The SN74HC373DWG4 has eight transparent D-type latches that can store data.
• It features 3-state outputs, allowing multiple devices to share a common bus.
• The output enable control (OE) pin enables or disables the outputs.
• The latch enable (LE) pin controls the storage of data in the latches.
• Non-inverting outputs ensure that the output signal matches the input signal.

Advantages and Disadvantages

Advantages: - High-speed operation due to CMOS technology - Compact design with multiple latches in a single package - Suitable for bus-oriented applications

Disadvantages: - Limited voltage range (2V to 6V) - Relatively high propagation delay compared to some other ICs

Working Principles

The SN74HC373DWG4 operates based on the principles of transparent latches. When the latch enable (LE) pin is high, the data inputs (D0-D7) are transferred to the outputs (Q0-Q7). The output enable (OE) pin controls whether the outputs are active or in a high-impedance state. When the OE pin is low, the outputs are enabled and reflect the stored data. Conversely, when the OE pin is high, the outputs are disabled and become high-impedance.

Detailed Application Field Plans

The SN74HC373DWG4 is commonly used in various applications, including:

1. Data buses in microprocessors and microcontrollers
2. Memory systems
3. Input/output (I/O) interfaces
4. Address decoding circuits
5. Register banks

Its ability to handle multiple data inputs and provide 3-state outputs makes it suitable for applications where data sharing and control are essential.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the SN74HC373DWG4 include:

1. 74HC373: This is a standard CMOS version of the IC.
2. CD74HC373: A similar IC from Texas Instruments with slightly different specifications.
3. MC74HC373: An alternative model from Motorola with comparable features.

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

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