SN74HC646NTG4

Product Overview

• Category: Integrated Circuit
• Use: Bus Transceiver and Register
• Characteristics:
  • High-speed CMOS Logic
  • Wide Operating Voltage Range
  • 3-State Outputs
• Package: TSSOP-24
• Essence: Transceiver with 3-state outputs and register
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Input Current: ±1µA
• Output Current: ±8mA
• Propagation Delay Time: 10ns (typical)
• Maximum Clock Frequency: 80MHz

Detailed Pin Configuration

The SN74HC646NTG4 has a total of 24 pins. The pin configuration is as follows:

1. A1
2. B1
3. C1
4. D1
5. GND
6. D2
7. C2
8. B2
9. A2
10. OE#
11. DIR
12. CLK
13. CLKEN
14. LE
15. OEA#
16. OEB#
17. I/O1A
18. I/O2A
19. I/O3A
20. I/O4A
21. VCC
22. I/O4B
23. I/O3B
24. I/O2B

Functional Features

• Bidirectional Data Transfer
• 3-State Outputs for Bus Sharing
• Separate Control Inputs for Transmit Enable (OEA#) and Receive Enable (OEB#)
• Clock Enable (CLKEN) for Register Operation
• Latch Enable (LE) for Synchronous Loading of Data

Advantages and Disadvantages

Advantages: - High-speed operation - Wide operating voltage range - 3-state outputs for bus sharing

Disadvantages: - Limited output current capacity - Relatively high propagation delay time

Working Principles

The SN74HC646NTG4 is a bus transceiver and register integrated circuit. It allows bidirectional data transfer between two buses while providing 3-state outputs for bus sharing. The control inputs, such as OEA#, OEB#, CLKEN, and LE, enable the user to control the direction of data flow and the operation of the internal register. The transceiver operates at high speed and can accommodate a wide range of supply voltages.

Detailed Application Field Plans

The SN74HC646NTG4 is commonly used in various applications that require bidirectional data transfer and bus sharing. Some specific application fields include:

1. Microcontroller Interfacing: The IC can be used to interface microcontrollers with external devices or other microcontrollers, enabling efficient data exchange.
2. Communication Systems: It can be employed in communication systems to facilitate data transmission between different modules or subsystems.
3. Industrial Automation: The IC finds applications in industrial automation systems where multiple devices need to communicate over a shared bus.
4. Data Acquisition: It can be utilized in data acquisition systems to transfer data between sensors, analog-to-digital converters, and digital processing units.

Detailed and Complete Alternative Models

1. SN74HC645NTG4
2. SN74HCT646DW
3. SN74LVC646APW

These alternative models offer similar functionality and characteristics to the SN74HC646NTG4 and can be considered as alternatives based on specific requirements.

In conclusion, the SN74HC646NTG4 is a versatile bus transceiver and register integrated circuit. It offers high-speed operation, wide voltage range, and 3-state outputs for efficient bus sharing. With its various control inputs and functional features, it finds applications in microcontroller interfacing, communication systems, industrial automation, and data acquisition. Alternative models are available to cater to specific needs.