Maxim MAX251CPD

收发器RS232

Overview

The MAX250 and MAX251CPD 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 MAX251CPD 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.

Features

Tube Package
Tube package
14 pin count
14 pins
+-10V power supply

600 mV Receiver Hysteresis

Applications

There are a lot of Maxim Integrated
MAX251CPD+ Drivers/Receivers/Transceivers applications.

• Televisions
• Cell phones
• Wireless modems
• Remote controls
• Wireless network systems
• Satellite communications networks
• Ethernet circuitry
• Wired telephone
• Cordless telephone
• Desktop PC