MC74HC373ANG

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data storage and transfer
• Characteristics: High-speed, octal transparent latch with 3-state outputs
• Package: DIP-20 (Dual In-Line Package with 20 pins)
• Essence: The MC74HC373ANG is a latch that can store and transfer data in digital systems. It provides eight latches with 3-state outputs, allowing for efficient data storage and sharing.
• Packaging/Quantity: The MC74HC373ANG is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage: 2V to 6V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature: -40°C to +85°C
• Propagation Delay: 15ns (max)
• Output Current: ±25mA
• Latch-Up Performance: ±300mA

Pin Configuration

The MC74HC373ANG has a total of 20 pins, which are assigned specific functions 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

• Transparent Latch: The MC74HC373ANG allows data to pass through the latch when the latch enable (LE) input is high.
• 3-State Outputs: The outputs of the latch can be put in a high-impedance state by setting the output enable (OE) input low, allowing multiple devices to share a common bus.
• High-Speed Operation: With a propagation delay of only 15ns, the MC74HC373ANG is suitable for high-speed digital systems.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer. - 3-state outputs allow for easy sharing of data buses. - Wide operating voltage range (2V to 6V) provides flexibility in various applications.

Disadvantages: - Limited number of latches (8) may not be sufficient for complex systems requiring more storage capacity. - DIP-20 package may not be suitable for space-constrained designs.

Working Principles

The MC74HC373ANG operates as an octal transparent latch. When the latch enable (LE) input is high, the data inputs (D0-D7) are transferred to the corresponding outputs (Q0-Q7). The latch holds the data until a new set of inputs is provided. The output enable (OE) input controls whether the outputs are active or in a high-impedance state.

Detailed Application Field Plans

The MC74HC373ANG can be used in various digital systems where data storage and transfer are required. Some potential application fields include:

1. Microcontrollers: The latch can be used to store and transfer data between the microcontroller and other peripheral devices.
2. Memory Systems: The MC74HC373ANG can be used in memory systems to hold address or data information during read/write operations.
3. Communication Systems: It can be utilized in communication systems for buffering and sharing data between different modules.

Detailed and Complete Alternative Models

1. SN74HC373N: Similar octal transparent latch with 3-state outputs, offered by Texas Instruments.
2. CD74HC373E: Octal transparent latch with 3-state outputs, available from Texas Instruments.
3. 74HCT373: Octal D-type transparent latch with 3-state outputs, manufactured by various semiconductor companies.

These alternative models provide similar functionality to the MC74HC373ANG and can be considered as substitutes based on specific requirements.

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