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Product Overview
The SN74LVCH245DWR from Texas Instruments is a high-performance 8-bit bus transceiver designed for 3.3-V VCC operation. It features non-inverting 3-state outputs and is part of the LVC family, offering low voltage and high speed. The device is ideal for bidirectional asynchronous communication between two data buses, with direction control via the DIR input and output enable via the OE input. The SN74LVCH245DWR is available in a SOIC-20 package, providing a compact solution for space-constrained applications.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage (VCC) |
1.65 V to 3.6 V |
| Input Voltage (VI) |
0 V to 5.5 V |
| Output Voltage (VO) |
0 V to VCC |
| High-Level Output Current (IOH) |
-24 mA at 3.3 V |
| Low-Level Output Current (IOL) |
24 mA at 3.3 V |
| Propagation Delay (tpd) |
4.5 ns max at 3.3 V |
| Input Capacitance (Ci) |
4 pF typical |
| Operating Temperature Range |
-40°C to 85°C |
| Package |
SOIC-20 (DWR) |
Key Features
- Operates from 1.65 V to 3.6 V, compatible with low-voltage systems
- 5.5-V tolerant inputs for mixed-voltage environments
- Non-inverting 3-state outputs for bus isolation
- High drive capability: ±24 mA at 3.3 V
- Low propagation delay: 4.5 ns max at 3.3 V
- Supports partial power-down mode (Ioff) to prevent backflow current
- ESD protection exceeds JESD 22 (2000-V HBM, 1000-V CDM)
Target Applications
- 5G base stations: Data bus isolation between baseband and RF modules
- Automotive dashboard: Communication between microcontroller and display driver
- Industrial automation: PLC I/O modules for signal buffering
- Networking equipment: Router and switch backplane interfaces
- Consumer electronics: Smart home hubs for sensor data transfer
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SN74LVCH245DWR. Our core advantages include:
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Original Factory Packaging: We maintain original factory packaging
and seals to ensure ESD protection and physical integrity.
產品概述
SN74LVCH245DWR 是德州儀器 (TI) 的一款高性能 8 位匯流排收發器,專為 3.3-V VCC 操作設計。它具有同相三態輸出,屬於 LVC 系列,提供低電壓和高速度。該器件適用於兩個數據匯流排之間的雙向異步通信,通過 DIR 輸入控制方向,並通過 OE 輸入啟用輸出。SN74LVCH245DWR 採用 SOIC-20 封裝,為空間受限的應用提供緊湊解決方案。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 (VCC) |
1.65 V 至 3.6 V |
| 輸入電壓 (VI) |
0 V 至 5.5 V |
| 輸出電壓 (VO) |
0 V 至 VCC |
| 高電平輸出電流 (IOH) |
-24 mA (3.3 V 時) |
| 低電平輸出電流 (IOL) |
24 mA (3.3 V 時) |
| 傳播延遲 (tpd) |
4.5 ns 最大值 (3.3 V 時) |
| 輸入電容 (Ci) |
4 pF 典型值 |
| 工作溫度範圍 |
-40°C 至 85°C |
| 封裝 |
SOIC-20 (DWR) |
核心特性
- 工作電壓範圍 1.65 V 至 3.6 V,兼容低壓系統
- 5.5 V 容限輸入,適用於混合電壓環境
- 同相三態輸出,實現匯流排隔離
- 高驅動能力:±24 mA (3.3 V 時)
- 低傳播延遲:4.5 ns 最大值 (3.3 V 時)
- 支持部分斷電模式 (Ioff),防止反向電流
- ESD 保護超過 JESD 22 標準 (2000-V HBM, 1000-V CDM)
典型應用場景
- 5G 基站:基帶與射頻模塊之間的數據匯流排隔離
- 汽車儀表盤:微控制器與顯示驅動器之間的通信
- 工業自動化:PLC I/O 模塊的信號緩衝
- 網絡設備:路由器與交換機背板接口
- 消費電子:智能家居中樞的傳感器數據傳輸
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