74HC640DB,112

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics: High-speed, CMOS technology, 8-bit bidirectional buffer/line driver
• Package: SSOP-20
• Essence: Translates logic levels between different voltage domains
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.0V to 6.0V
• Input Voltage Range: -0.5V to VCC + 0.5V
• Output Voltage Range: -0.5V to VCC + 0.5V
• Operating Temperature Range: -40°C to +125°C
• Maximum Propagation Delay: 13 ns
• Maximum Quiescent Current: 4 μA

Detailed Pin Configuration

1. OE (Output Enable)
2. A0 (Input/Output Address Bit 0)
3. A1 (Input/Output Address Bit 1)
4. A2 (Input/Output Address Bit 2)
5. A3 (Input/Output Address Bit 3)
6. A4 (Input/Output Address Bit 4)
7. A5 (Input/Output Address Bit 5)
8. GND (Ground)
9. B5 (Input/Output Data Bit 5)
10. B4 (Input/Output Data Bit 4)
11. B3 (Input/Output Data Bit 3)
12. B2 (Input/Output Data Bit 2)
13. B1 (Input/Output Data Bit 1)
14. B0 (Input/Output Data Bit 0)
15. VCC (Supply Voltage)
16. DIR (Direction Control)
17. B7 (Input/Output Data Bit 7)
18. B6 (Input/Output Data Bit 6)
19. NC (No Connection)
20. GND (Ground)

Functional Features

• Bidirectional data transfer between two independent buses with different voltage levels
• Automatic direction control based on DIR pin
• High-speed operation suitable for various applications
• CMOS technology ensures low power consumption

Advantages and Disadvantages

Advantages: - Enables seamless communication between different voltage domains - Easy to use with automatic direction control - Low power consumption due to CMOS technology

Disadvantages: - Limited number of address and data bits (6 bits each) - May not be suitable for applications requiring a larger number of address or data lines

Working Principles

The 74HC640DB,112 is a bidirectional buffer/line driver that translates logic levels between two independent buses. It operates based on the input signals received at the address and data pins. The direction of data transfer is controlled by the DIR pin. When DIR is high, data flows from bus A to bus B, and when DIR is low, data flows from bus B to bus A.

Detailed Application Field Plans

1. Microcontroller interfacing: The 74HC640DB,112 can be used to interface microcontrollers operating at different voltage levels, allowing seamless communication between them.
2. Level shifting: It can be employed in systems where logic signals need to be translated between different voltage domains, such as in mixed-voltage circuit designs.
3. Bus isolation: The IC can act as a buffer between two buses, providing isolation and preventing interference between them.

Detailed and Complete Alternative Models

1. SN74LVC8T245PW: 8-bit dual-supply bus transceiver with configurable voltage translation and 3-state outputs.
2. CD40109BE: Quad level-shifter/buffer with 3-state outputs and supply voltage range of 3V to 18V.
3. TXB0108PWR: 8-bit bidirectional voltage-level translator with automatic direction sensing and 3-state outputs.

(Note: These alternative models are provided for reference and may have different specifications and pin configurations.)

This entry provides an overview of the 74HC640DB,112 integrated circuit, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models. It serves as a comprehensive guide for understanding and utilizing this logic level translator in various electronic systems.