SN74LVCH8T245DBQR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: Low-Voltage, High-Speed, 8-Bit, Dual-Supply, Bi-Directional Transceiver
• Package: SSOP (Shrink Small Outline Package)
• Essence: This IC is designed to facilitate the bidirectional level shifting between two voltage domains, making it ideal for interfacing between different logic families or voltage levels.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 400 MHz
• Number of Channels: 8
• Input/Output Type: Tri-State
• Logic Family: LVCMOS
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LVCH8T245DBQR has a total of 20 pins, which are assigned as follows:

1. OE (Output Enable) 1
2. A1 (Data Input/Output) 1
3. B1 (Data Input/Output) 1
4. GND (Ground)
5. B2 (Data Input/Output) 2
6. A2 (Data Input/Output) 2
7. VCC (Positive Power Supply)
8. DIR (Direction Control)
9. OE (Output Enable) 2
10. B3 (Data Input/Output) 3
11. A3 (Data Input/Output) 3
12. B4 (Data Input/Output) 4
13. A4 (Data Input/Output) 4
14. B5 (Data Input/Output) 5
15. A5 (Data Input/Output) 5
16. B6 (Data Input/Output) 6
17. A6 (Data Input/Output) 6
18. B7 (Data Input/Output) 7
19. A7 (Data Input/Output) 7
20. VCC (Positive Power Supply)

Functional Features

• Bidirectional Voltage Level Shifting: Allows for seamless communication between different voltage domains.
• Tri-State Outputs: Enables multiple devices to share a common bus without interference.
• High-Speed Operation: Supports data rates up to 400 MHz, making it suitable for high-performance applications.
• Low-Voltage Operation: Works with supply voltages as low as 1.65V, reducing power consumption and enabling compatibility with various systems.

Advantages and Disadvantages

Advantages: - Efficient level shifting between different voltage domains. - Tri-state outputs facilitate bus sharing. - High-speed operation for demanding applications. - Low-voltage capability for power-efficient designs.

Disadvantages: - Limited to 8-bit data transmission. - May require additional components for more complex interfacing scenarios. - Sensitive to electrostatic discharge (ESD) and proper handling precautions are necessary.

Working Principles

The SN74LVCH8T245DBQR operates by receiving data from one voltage domain and translating it to the appropriate voltage level of the other domain. It achieves bidirectional communication by utilizing a direction control pin (DIR). When DIR is set to logic high, data flows from A-side to B-side, and when DIR is set to logic low, data flows from B-side to A-side. The OE (Output Enable) pins allow the outputs to be tri-stated, effectively disconnecting the IC from the bus when not in use.

Detailed Application Field Plans

The SN74LVCH8T245DBQR finds applications in various fields, including:

1. Microcontroller Interfacing: It enables communication between microcontrollers operating at different voltage levels.
2. Mixed Voltage Systems: Facilitates data transfer between components with different logic families or power supply voltages.
3. Industrial Automation: Allows for level shifting in control systems and sensor interfaces.
4. Communication Interfaces: Enables voltage translation in UART, SPI, I2C, and other serial communication protocols.
5. Battery-Powered Devices: Supports low-voltage operation, making it suitable for portable electronics.

Detailed and Complete Alternative Models

1. TXB0108PWR: 8-Bit Bidirectional Voltage-Level Translator with Automatic Direction Sensing
2. PCA9306DCTR: Dual Bidirectional I2C-Bus and SMBus Voltage-Level Translator
3. SN74LVC8T245PW: 8-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State Outputs
4. CD4050BE: Hex Non-Inverting Buffer/Converter

These alternative models offer similar functionality