1FEATURES
· ESD Protection for RS-232 I/O Pins
– ±15-kV Human-Body Model (HBM)
· Meets or Exceeds the Requirements of
TIA/EIA-232-F and ITU v.28 Standards
· Operates at 5-V VCC Supply
· Four Drivers and Four Receivers
· Operates up to 120 kbit/s
· External Capacitors: 4 × 0.1 mF
· Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II

APPLICATIONS
· Battery-Powered Systems
· PDAs
· Notebooks
· Laptops
· Palmtop PCs
· Hand-Held Equipment

DESCRIPTION
The MAX208 device consists of four line drivers, four line receivers, and a dual charge-pump circuit with ±15-kV
HBM ESD protection pin to pin (serial-port connection pins, including GND). The device meets the requirements
of TIA/EIA-232-F and provides the electrical interface between an asynchronous communication controller and
the serial-port connector. The charge pump and four small external capacitors allow operation from a single 5-V
supply. The devices operate at data signaling rates up to 120 kbit/s and a maximum of 30-V/ms driver output
slew rate.