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MAX251：5V、隔离型、RS-232驱动器/接收器

The MAX250 and MAX251 chip set form the heart of a complete, electronically isolated, RS-232 dual transmitter/receiver. By combining many functions on two chips, the cost and complexity required for an isolated digital interface is greatly reduced. Four low cost optocouplers, four capacitors, a diode and a small pot-core type transformer are all that are required to complete a 19.2k baud transceiver. Faster data rates are possible by using high speed optocouplers. In addition to the driving and receiving circuitry for the optocouplers, the chip set includes a push-pull transformer driver to supply power to the interface's isolated side. Other convenient features include single +5V operation, a low power shutdown mode, and output enable control for three-state operation. The MAX250 and MAX251 are supplied in 14 lead DIP, 14 lead small outline and 20 leadless chip carrier packages. The MAX252 has all the required components for RS-232 communication in a single package.

关键特性 Isolated Data Interface Single +5V Supply Uses Low Cost Optocouplers 5µW Power Shutdown 2 Transmitters and 2 Receivers

MAX250、MAX251：引脚配置 应用 桥接地电位差 数据链路至模拟电路 强噪声环境中的数据通信 工业通信

数据手册DataSheet

关键参数

质量和环境数据

• MAX251.pdf

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