MC74HC373ADTG

Product Overview

• Category: Integrated Circuit
• Use: Data Storage and Transfer
• Characteristics: High-Speed, Octal Transparent Latch with 3-State Outputs
• Package: TSSOP-20
• Essence: Latching and storing data in digital systems
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Logic Family: HC
• Number of Bits: 8
• Supply Voltage Range: 2V to 6V
• High-Level Output Current: -5.2mA
• Low-Level Output Current: 5.2mA
• Propagation Delay Time: 15ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

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

The MC74HC373ADTG is an octal transparent latch with 3-state outputs. It allows for the latching and storage of data in digital systems. The latch is transparent when the latch enable (LE) input is high, allowing the data inputs to pass through to the outputs. When the LE input is low, the latch holds the last data value.

The output enable (OE) input controls the 3-state outputs. When OE is high, the outputs are in a high-impedance state, allowing other devices to drive the bus lines. When OE is low, the outputs reflect the data stored in the latch.

Advantages and Disadvantages

Advantages: - High-speed operation - Octal configuration for efficient data storage and transfer - 3-state outputs for bus line control - Wide supply voltage range

Disadvantages: - Limited number of bits (8) - Propagation delay may affect timing-sensitive applications

Working Principles

The MC74HC373ADTG operates based on the principles of digital logic. When the latch enable (LE) input is high, the latch is transparent, and the data inputs are passed through to the outputs. This allows for real-time data transfer. When the LE input is low, the latch holds the last data value, providing stability to the stored data.

The output enable (OE) input controls the 3-state outputs. When OE is high, the outputs are in a high-impedance state, allowing other devices to drive the bus lines. When OE is low, the outputs reflect the data stored in the latch, enabling data retrieval.

Detailed Application Field Plans

The MC74HC373ADTG is widely used in various digital systems where data storage and transfer are required. Some application fields include:

1. Microcontrollers: Used to store and transfer data between the microcontroller and external devices.
2. Communication Systems: Facilitates data transmission and reception in communication protocols.
3. Memory Modules: Enables data storage in memory modules such as RAM or flash memory.
4. Data Acquisition Systems: Used to latch and store data from sensors or analog-to-digital converters.
5. Industrial Automation: Facilitates data transfer between different components in automated systems.

Detailed and Complete Alternative Models

1. SN74HC373N: Similar octal transparent latch with 3-state outputs, available in DIP-20 package.
2. CD74HC373E: Octal transparent latch with 3-state outputs, available in PDIP-20 package.
3. MC74HCT373AN: Octal transparent latch with 3-state outputs, operates at a wider temperature range (-55°C to +125°C).

These alternative models provide similar functionality to the MC74HC373ADTG and can be used as replacements depending on specific requirements.

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