ZHCSN53B December 2019 – March 2021 SN74LXCH8T245
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 Pin Configuration and Functions
-
6 Specifications
- 6.1 Absolute Maximum Ratings
- 6.2 ESD Ratings
- 6.3 Recommended Operating Conditions
- 6.4 Thermal Information
- 6.5 Electrical Characteristics
- 6.6 Switching Characteristics, VCCA = 1.2 ± 0.1 V
- 6.7 Switching Characteristics, VCCA = 1.5 ± 0.1 V
- 6.8 Switching Characteristics, VCCA = 1.8 ± 0.15 V
- 6.9 Switching Characteristics, VCCA = 2.5 ± 0.2 V
- 6.10 Switching Characteristics, VCCA = 3.3 ± 0.3 V
- 6.11 Switching Characteristics, VCCA = 5.0 ± 0.5 V
- 6.12 Switching Characteristics: Tsk, TMAX
- 6.13 Operating Characteristics
- 6.14 Typical Characteristics
- 7 Parameter Measurement Information
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 CMOS Schmitt-Trigger Inputs with Integrated Pulldowns
- 8.3.2 Balanced High-Drive CMOS Push-Pull Outputs
- 8.3.3 Partial Power Down (Ioff)
- 8.3.4 VCC Isolation and VCC Disconnect
- 8.3.5 Over-Voltage Tolerant Inputs
- 8.3.6 Glitch-Free Power Supply Sequencing
- 8.3.7 Negative Clamping Diodes
- 8.3.8 Fully Configurable Dual-Rail Design
- 8.3.9 Supports High-Speed Translation
- 8.3.10 Bus-Hold Data Inputs
- 8.4 Device Functional Modes
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
3 说明
SN74LXCH8T245 是一款 8 位双电源同相双向电压电平转换器件，具有总线保持电路。Ax 引脚和控制引脚（DIR 和 OE）以 VCCA 逻辑电平为基准，Bx 引脚以 VCCB 逻辑电平为基准。A 端口能够接受 1.1V 至 5.5V 的 I/O 电压，而 B 端口可接受 1.1V 至 5.5V 的 I/O 电压。如果 OE 设为低电平，DIR 上为高电平时允许数据从 A 传输到 B，DIR 上为低电平时允许数据从 B 传输到 A。OE 设为高电平时，Ax 和 Bx 引脚均处于高阻抗状态。请参阅器件功能模式，了解控制逻辑的运行摘要。
器件信息(1)
| 器件型号 | 封装 | 封装尺寸（标称值） |
|---|---|---|
| SN74LXCH8T245PWR | TSSOP (24) | 7.80mm × 6.40mm |
| SN74LXCH8T245RHLR | VQFN (24) | 5.50mm × 3.50mm |
(1) 如需了解所有可用封装，请参阅数据表末尾的可订购米6体育平台手机版_好二三四附录。
功能模块图