FEATURES

· Controlled Baseline

– One Assembly/Test Site, One Fabrication

Site

· Extended Temperature Performance of –55°C

to 125°C

· Enhanced Diminishing Manufacturing

Sources (DMS) Support

· Enhanced Product-Change Notification

· Qualification Pedigree (1)

· RS-232 Bus-Pin ESD Protection Exceeds

±15 kV Using Human-Body Model (HBM)

· Meets or Exceeds the Requirements of

TIA/EIA-232-F and ITU v.28 Standards

· Operates With 3-V to 5.5-V VCC Supply

· Operates up to 250 kbit/s

· One Driver and One Receiver

· Low Standby Current . . . 1 mA Typical

· External Capacitors . . . 4 ´ 0.1 mF

· Accepts 5-V Logic Input With 3.3-V Supply

· Alternative High-Speed Pin-Compatible

Device (1 Mbit/s)

– SNx5C3221

· Auto-Powerdown Feature Automatically

Disables Drivers for Power Savings

APPLICATIONS

· Battery-Powered, Hand-Held, and Portable

Equipment

· PDAs and Palmtop PCs

· Notebooks, Subnotebooks, and Laptops

· Digital Cameras

· Mobile Phones and Wireless Devices

DESCRIPTION/ORDERING INFORMATION

The MAX3221 consists of one line driver, one line receiver, and a dual charge-pump circuit with ±15-kV 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 3-V to

5.5-V supply. These devices operate at data signaling rates up to 250 kbit/s and a maximum of 30-V/ms driver

output slew rate.