SN74HC373PWG4

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 Input
  • Buffered Inputs
  • Balanced Propagation Delays
  • Wide Operating Voltage Range: 2 V to 6 V
• Package: TSSOP-20
• Essence: The SN74HC373PWG4 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: 2 V to 6 V
• High-Level Input Voltage: 2 V
• Low-Level Input Voltage: 0.8 V
• High-Level Output Voltage: 4.4 V
• Low-Level Output Voltage: 0.1 V
• Maximum Operating Frequency: 80 MHz
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74HC373PWG4 has a total of 20 pins, which are assigned as follows:

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

Functional Features

• The SN74HC373PWG4 is designed to store and output data using transparent latches.
• It has a common output enable input that allows the outputs to be put in a high-impedance state, making it suitable for bus-oriented applications.
• The buffered inputs ensure signal integrity and prevent noise interference.
• The balanced propagation delays ensure synchronized data transfer between the latches.

Advantages and Disadvantages

Advantages: - High-speed operation due to CMOS technology - Multiple latches in a single package save board space - 3-state outputs allow for efficient bus sharing

Disadvantages: - Limited voltage range (2 V to 6 V) - Not suitable for high-frequency applications above 80 MHz

Working Principles

The SN74HC373PWG4 operates based on the principles of transparent latches. When the clock pulse (CP) is active, the data inputs (D0-D7) are transferred to the corresponding latch outputs (Q0-Q7). The output enable (OE) input controls whether the latch outputs are active or in a high-impedance state.

Detailed Application Field Plans

The SN74HC373PWG4 is commonly used in various applications, including: - Data storage and transfer in microcontrollers and microprocessors - Address decoding in memory systems - Bus interfacing in communication systems - Control signal buffering in industrial automation

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to the SN74HC373PWG4 are: - 74HCT373: Similar octal transparent latch with 3-state outputs, but operates at a lower voltage range of 4.5 V to 5.5 V. - CD74HC373: Octal transparent latch with 3-state outputs from Texas Instruments, offering similar functionality and characteristics.

These alternative models provide options for different voltage requirements or preferences from different manufacturers.

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