Encyclopedia Entry: 74VHC373MTC

Product Overview

Category

The 74VHC373MTC belongs to the category of integrated circuits (ICs) and specifically falls under the family of VHC series logic devices.

Use

This IC is commonly used in digital systems for data storage and transfer applications. It serves as an octal transparent latch with 3-state outputs, making it suitable for various data processing tasks.

Characteristics

• Octal transparent latch with 3-state outputs
• High-speed operation
• Low power consumption
• Wide operating voltage range
• Schmitt-trigger action on all inputs
• Balanced propagation delays
• Symmetrical output impedance

Package and Quantity

The 74VHC373MTC is available in a small outline surface mount package (TSSOP) with 20 pins. It is typically sold in reels or tubes containing multiple units.

Essence

The essence of the 74VHC373MTC lies in its ability to store and transfer data efficiently within digital systems. Its high-speed operation, low power consumption, and balanced propagation delays make it a reliable choice for data processing applications.

Specifications

• Supply Voltage Range: 2.0V 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: ±8mA at 4.5V
• Maximum Quiescent Supply Current: 10μA at 5.5V

Pin Configuration

The 74VHC373MTC has a total of 20 pins, which are assigned specific functions as follows:

1. D0: Data input 0
2. D1: Data input 1
3. D2: Data input 2
4. D3: Data input 3
5. D4: Data input 4
6. D5: Data input 5
7. D6: Data input 6
8. D7: Data input 7
9. GND: Ground
10. Q0: Output 0
11. Q1: Output 1
12. Q2: Output 2
13. Q3: Output 3
14. Q4: Output 4
15. Q5: Output 5
16. Q6: Output 6
17. Q7: Output 7
18. OE: Output enable
19. LE: Latch enable
20. VCC: Supply voltage

Functional Features

The key functional features of the 74VHC373MTC include:

• Transparent latch operation: Allows data to pass through when the latch enable (LE) input is high.
• 3-state outputs: The outputs can be put in a high-impedance state by setting the output enable (OE) input low, enabling multiple devices to share a common bus.
• Schmitt-trigger action: Provides hysteresis for improved noise immunity and signal integrity.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data processing.
• Low power consumption helps conserve energy.
• Wide operating voltage range allows compatibility with various systems.
• Schmitt-trigger action enhances noise immunity.
• Balanced propagation delays ensure reliable signal transmission.
• Symmetrical output impedance simplifies system design.

Disadvantages

• Limited output drive capability may restrict use in certain applications requiring higher current sourcing or sinking.

Working Principles

The 74VHC373MTC operates based on the principles of transparent latching. When the latch enable (LE) input is high, the data inputs (D0-D7) are transferred to the outputs (Q0-Q7). The output enable (OE) input controls whether the outputs are active or in a high-impedance state.

Application Field Plans

The 74VHC373MTC finds extensive use in various digital systems and applications, including but not limited to:

1. Microprocessors and microcontrollers
2. Data storage devices
3. Communication systems
4. Industrial automation
5. Automotive electronics
6. Consumer electronics

Alternative Models

For those seeking alternative options, several similar ICs can be considered as replacements for the 74VHC373MTC. Some notable alternatives include:

1. SN74LVC373A: Octal transparent latch with 3-state outputs from Texas Instruments.
2. MC74VHC373: Octal D-type latch with 3-state outputs from ON Semiconductor.
3. CD74HCT373: High-speed CMOS logic octal transparent latch from Texas Instruments.

These alternative models offer comparable functionality and can be suitable substitutes depending on specific requirements.

In conclusion, the 74VHC373MTC is a versatile integrated circuit that excels