Texas Instruments
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SN74HCT373DBR
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SN74HCT373DBR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Octal Transparent D-Type Latches with 3-State Outputs
  • Characteristics:
    • High-speed operation
    • Wide operating voltage range
    • 3-state outputs for bus-oriented applications
    • Compatible with TTL inputs
  • Package: SSOP (Shrink Small Outline Package)
  • Essence: The SN74HCT373DBR is a latch IC that can store and output data in an octal format. It is commonly used in digital systems where multiple bits of data need to be stored and retrieved simultaneously.
  • Packaging/Quantity: The SN74HCT373DBR is typically sold in reels, with 2500 units per reel.

Specifications

  • Supply Voltage Range: 4.5V to 5.5V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Output Drive Capability: ±6mA at 4.5V
  • Propagation Delay Time: 15ns (max) at 5V
  • Input Capacitance: 3pF (typical)

Detailed Pin Configuration

The SN74HCT373DBR 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. LE (Latch Enable)
  12. Q0 (Output 0)
  13. Q1 (Output 1)
  14. Q2 (Output 2)
  15. Q3 (Output 3)
  16. Q4 (Output 4)
  17. Q5 (Output 5)
  18. Q6 (Output 6)
  19. Q7 (Output 7)
  20. VCC (Supply Voltage)

Functional Features

  • Octal transparent latch with 3-state outputs
  • Data inputs are latched when the latch enable (LE) signal is high
  • Outputs can be enabled or disabled using the output enable (OE) signal
  • Compatible with TTL logic levels, allowing easy integration into existing systems
  • High-speed operation allows for efficient data storage and retrieval

Advantages and Disadvantages

Advantages: - High-speed operation enables quick data processing - Wide operating voltage range provides flexibility in different applications - 3-state outputs allow for bus-oriented applications - Compatibility with TTL inputs simplifies integration into existing systems

Disadvantages: - Limited output drive capability may restrict use in certain high-current applications - Propagation delay time may impact real-time applications with strict timing requirements

Working Principles

The SN74HCT373DBR operates as an octal transparent latch. When the latch enable (LE) signal is high, the data inputs (D0-D7) are latched and stored internally. The stored data can then be accessed through the corresponding output pins (Q0-Q7). The output enable (OE) signal can be used to enable or disable the outputs, allowing for bus-oriented applications.

Detailed Application Field Plans

The SN74HCT373DBR can be used in various digital systems where multiple bits of data need to be stored and retrieved simultaneously. Some potential application fields include:

  1. Microprocessors and microcontrollers
  2. Memory systems
  3. Data communication systems
  4. Industrial automation
  5. Automotive electronics

Detailed and Complete Alternative Models

  1. SN74HCT373N: DIP (Dual In-line Package) version of the SN74HCT373DBR
  2. 74HC373: Similar octal transparent latch IC from a different manufacturer
  3. CD74HCT373E: Octal transparent latch IC with similar characteristics and package

These alternative models provide similar functionality to the SN74HCT373DBR and can be used as replacements in various applications.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af SN74HCT373DBR i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of SN74HCT373DBR:

  1. Q: What is SN74HCT373DBR? A: SN74HCT373DBR is a type of octal transparent latch with 3-state outputs, commonly used in digital systems.

  2. Q: What is the purpose of SN74HCT373DBR? A: SN74HCT373DBR is used to store and control the flow of data in digital circuits, allowing for temporary storage or latching of signals.

  3. Q: How many bits can SN74HCT373DBR handle? A: SN74HCT373DBR can handle 8 bits of data, as it is an octal latch.

  4. Q: What is the voltage range supported by SN74HCT373DBR? A: SN74HCT373DBR supports a voltage range of 4.5V to 5.5V.

  5. Q: Can SN74HCT373DBR be used in both parallel and serial data transfer applications? A: Yes, SN74HCT373DBR can be used in both parallel and serial data transfer applications, depending on the circuit design.

  6. Q: What is the maximum operating frequency of SN74HCT373DBR? A: The maximum operating frequency of SN74HCT373DBR is typically around 25 MHz.

  7. Q: Does SN74HCT373DBR have any built-in protection features? A: Yes, SN74HCT373DBR has built-in diode clamps that provide protection against electrostatic discharge (ESD).

  8. Q: Can SN74HCT373DBR drive LEDs directly? A: No, SN74HCT373DBR is not designed to drive LEDs directly. It requires additional components like current-limiting resistors.

  9. Q: Can SN74HCT373DBR be cascaded to handle more than 8 bits of data? A: Yes, multiple SN74HCT373DBR chips can be cascaded together to handle larger data widths.

  10. Q: What are some common applications of SN74HCT373DBR? A: SN74HCT373DBR is commonly used in microcontrollers, memory systems, data buses, and other digital systems where temporary storage or latching of signals is required.

Please note that these answers are general and may vary depending on specific circuit designs and requirements.