MAX253 變壓器驅動器，用于隔離型RS-485接口
MAX253 概述
The MAX253 is a monolithic oscillator/power-driver, specifically designed to provide isolated power for an isolated RS-485 or RS-232 data interface. It drives a center-tapped transformer primary from a 5V or 3.3V DC power supply. The secondary can be wound to provide any isolated voltage needed at power levels up to 1W.
The MAX253 consists of a CMOS oscillator driving a pair of N-channel power switches. The oscillator runs at double the output frequency, driving a toggle flip-flop to ensure 50% duty cycle to each of the switches. Internal delays are arranged to ensure break-before-make action between the two switches.
The SD pin puts the entire device into a low-power shutdown state, disabling both the power switches and oscillator.
MAX253 關鍵特性
MAX253 應用/使用
橋接地電位差
高噪聲抑制通信接口
隔離型和/或高壓電源
隔離型RS-485/RS-232電源
醫療裝置
過程控制
變壓器驅動器
MAX253應用電路
相關閱讀：
- [電子動態] Pyramid 發現，在LTE時代，WiMax會在細分市場戰 2010-01-08
- [電子動態] WiMAX+LTE設計即將面世 2010-03-19
- [電子動態] 全新4G-WiMAX芯片采用雙上行鏈路傳輸 2010-03-25
- [電子動態] Maxim可驅動高ESR晶體的低電流RTC 2010-04-07
- [電子動態] 英特爾,三星等成立WiMax 2合作倡議組織WCI 2010-04-13
- [電子動態] LTE與WiMax競爭 4G技術 2010-04-23
- [電源技術] MAX2598四波段TDD-WCDMA比特至RF輸出發送器 2008-06-30
- [電源技術] Maxim推出高度集成的電源管理(PMIC)MAX8819A 2009-01-05
(責任編輯：發燒友)
發表評論，輕松獲取積分：
最新評論
已有條評論，共人參與，點擊查看相關下載
- max232中文資料下載16169
- max485中文資料9651
- max7219 MAX7221中文資料pdf7236
- max232中文資料6957
- max3232中文資料6493
- max232芯片中文資料5210
- max813中文資料4873
- maxplus2使用教程4767
電子技術文章排行
本類排行
總排行