74LVCH245AD,118

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter/Transceiver
• Characteristics: High-speed, low-power, bidirectional voltage level translation
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Transfers signals between devices operating at different voltage levels
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.2V 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

Detailed Pin Configuration

1. OE (Output Enable)
2. A1 (Channel 1 Data Input/Output)
3. B1 (Channel 1 Data Input/Output)
4. GND (Ground)
5. B2 (Channel 2 Data Input/Output)
6. A2 (Channel 2 Data Input/Output)
7. VCC (Supply Voltage)
8. DIR (Direction Control)
9. A3 (Channel 3 Data Input/Output)
10. B3 (Channel 3 Data Input/Output)
11. B4 (Channel 4 Data Input/Output)
12. A4 (Channel 4 Data Input/Output)
13. GND (Ground)
14. A5 (Channel 5 Data Input/Output)
15. B5 (Channel 5 Data Input/Output)
16. VCC (Supply Voltage)

Functional Features

• Bidirectional voltage level translation between two voltage domains
• Automatic direction control based on DIR pin
• Tri-State outputs for easy bus sharing
• High-speed operation with minimal propagation delay
• Low power consumption

Advantages

• Enables communication between devices operating at different voltage levels
• Supports high-speed data transfer
• Low power consumption extends battery life in portable devices
• Tri-State outputs allow multiple devices to share a common bus

Disadvantages

• Limited to 8 channels, may not be suitable for applications requiring more channels
• Requires careful consideration of voltage compatibility between input and output domains

Working Principles

The 74LVCH245AD,118 is a bidirectional level shifter/transceiver IC. It allows for the translation of signals between two voltage domains, enabling communication between devices operating at different voltage levels. The direction of signal flow is controlled by the DIR pin. When the DIR pin is set to a logic high or low, the corresponding channel's data can be transferred bidirectionally. Tri-State outputs enable multiple devices to share a common bus.

Detailed Application Field Plans

• Logic level translation between microcontrollers and peripheral devices
• Interfacing between different voltage domains in mixed-signal systems
• Communication between devices with different supply voltages

Detailed and Complete Alternative Models

• SN74LVC245A: Similar functionality, different package (TSSOP)
• TXB0108: Bidirectional level shifter with 8 channels, supports higher voltage ranges
• PCA9306: I2C level translator with automatic direction control

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