• 简体中文
• English

MAX563：+3.3V Powered, EIA TIA 562 Dual Transceiver with Receivers Active in Shutdown

The MAX563 is a +3.3V-powered EIA/TIA-562 transceiver with two transmitters and two receivers. Because it implements the EIA/TIA-562 standard, the MAX563 communicates with RS-232 transceivers, yet consumes far less power; this makes it ideal for battery-powered, hand-held computers. And, the MAX563 guarantees a 116kbps data rate while maintaining ±3.7V EIA/TIA-562 signal levels, which makes it compatible with LapLink® software. An on-board charge pump converts the +3.3V supply to the ±6.6V needed to produce the EIA/TIA-562 output voltage levels. Four 0.1µF charge-pump capacitors and a bypass capacitor of similar size are the only external components required. When the MAX563's charge pumps and transmitters are shut down to save power, the receivers remain active to continuously monitor signals from external devices (for example, ring indicator from modems). The two receivers' outputs can be enabled and disabled independently of the shutdown function to allow two ports-generally of different types-to be wire-OR connected at the UART.

Key Features Guaranteed Interoperability with RS-232 Operates from a Single +3.0V to +3.6V Supply 2 Drivers, 2 Receivers Receivers Active in Shutdown Mode Low-Power Shutdown: 10µA Max Small Package-18-Pin Wide SO Three-State TTL/CMOS Receiver Outputs 116kbps Guaranteed Data Rate

MAX563: Typical Operating Circuit Applications/Uses Bar-Code Scanners Battery-Powered Applications Handy Terminals Notebook and Palmtop Computers

DataSheet

Parametrics

Quality and Environmental Data

• MAX563.pdf

Ordering Information