SN65C3221 - Texas Instruments

SN65C3221 3-V to 5.5-V Single-Channel RS-232 Compatible Line Driver/Receiver

The SN65C3221 and SN75C3221 consist of one line driver, one line receiver, and a dual chargepump circuit with ±15-kV ESD protection pin to pin (serial-port connection pins, including GND). These devices providethe electrical interface between an asynchronous communication controller and the serial-port connector. The charge pump and four small external capac.

Features

• Operate with 3-V to 5.5-V VCC supply
• Operate up to 1 Mbit/s
• Low standby current : 1 μA typical
• External capacitors : 4 x 0.1 μF
• Accepts 5-V logic input with 3.3-V supply
• RS-232 bus-pin ESD protection exceeds ±15 kV using human-body model (HBM)
• Auto-powerdown feature automatically disables drivers for power savings 2 Applications
• Industrial PCs
• Wired networking
• Data center and enterprise computing
• Battery-powered systems
• PDAs
• Notebooks
• Laptops
• Palmtop PCs
• Hand-held equipment 3 Description The SN65C3221 and SN75C3221 consist of one line driver, one line receiver, .