SN74AHCT373N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Octal Transparent D-Type Latches with 3-State Outputs
• Characteristics:
  • High-speed operation
  • 3-state outputs for bus-oriented applications
  • Common latch enable input
  • Eight latches in a single package
• Package: DIP-20 (Dual In-Line Package with 20 pins)
• Essence: The SN74AHCT373N is an octal transparent latch that can store data and provide output signals based on the latch enable input.
• Packaging/Quantity: Available in tubes or reels, with quantities varying depending on the supplier.

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
• Input Capacitance: 3pF
• Output Capacitance: 6pF
• Propagation Delay Time: 7ns (max)
• Output Current: ±8mA

Detailed Pin Configuration

The SN74AHCT373N has a total of 20 pins, which are assigned as follows:

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

Functional Features

• The SN74AHCT373N is designed to store and output data in a latch configuration.
• It has a common latch enable input (LE) that controls the storage of data.
• The eight data inputs (D0-D7) are transparently transferred to the corresponding outputs (Q0-Q7) when the latch enable input is active.
• The output enable input (OE) allows the outputs to be put into a high-impedance state, making it suitable for bus-oriented applications.

Advantages and Disadvantages

Advantages: - High-speed operation - 3-state outputs for bus-oriented applications - Common latch enable input simplifies control logic - Compact design with eight latches in a single package

Disadvantages: - Limited voltage range (4.5V to 5.5V) - Propagation delay time may affect timing-sensitive applications

Working Principles

The SN74AHCT373N operates based on the principle of transparent latching. When the latch enable input (LE) is active, the data inputs (D0-D7) are transferred to the corresponding outputs (Q0-Q7). The latch stores the data until the latch enable input is deactivated. The output enable input (OE) can be used to disable the outputs, putting them in a high-impedance state.

Detailed Application Field Plans

The SN74AHCT373N is commonly used in various digital systems where data storage and output control are required. Some application fields include:

1. Microprocessor-based systems
2. Data communication systems
3. Industrial automation
4. Automotive electronics
5. Consumer electronics

Detailed and Complete Alternative Models

1. 74HC373: Similar octal transparent latch with 3-state outputs, compatible with a wider voltage range (2V to 6V).
2. CD74HCT373: Octal transparent latch with 3-state outputs, operates at a higher temperature range (-55°C to +125°C).
3. MC74ACT373: Octal transparent latch with 3-state outputs, offers faster propagation delay time (5ns max).

These alternative models provide similar functionality to the SN74AHCT373N but may have different specifications or operating characteristics.

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