DESCRIPTION

The ST3222E is a 3V powered EIA/TIA-232 and V.28/V.24 communications interface with low power requirements, high data-rate capabilities and enhanced electrostatic discharge (ESD) protection to ±8kV using IEC1000-4-2 Contact Discharge and ±15kV using the Human Body Model. ST3222E has a proprietary low dropout transmitter output stage providing true RS-232 performance from 3 to 5V supplies with a dual charge pump. The charge pump requires only four small 0.1mF external capacitors for operation form 3V supply.

■ ESD PROTECTIO FOR RS-232 I/O PINS

±15KV HUMAN BODY MODEL

±8KV IEC 1000-4-2 CONTACT DISCHARGE

■ 300µA SUPPLY CURRENT

■ 250Kbps MINIMUM GUARENTEED DATA

RATE

■ 6V/µs MINIMUM GUARANTEED SLEW RATE

■ MEET EIA/TIA-232 SPECIFICATIONS DOWN

TO 3V

■ AVAILABLE IN SO-18, SSOP20 AND

TSSOP20