1 Features

• Operates with 3V to 5.5V VCC supply

• Operates up to 1Mbit/s

• Low supply current: 300μA typical

• External capacitors: 4 × 0.1μF

• Accept 5V logic input with 3.3V supply

• Latch-up performance exceeds 100mA Per JESD

78, class II

• ESD protection for RS-232 pins

– ±15kV Human-Body Model (HBM)

– ±15kV IEC 61000-4-2 air-gap discharge

– ±8kV IEC 61000-4-2 contact discharge

• Available in near chip scale QFN (3mmx3mm)

package (85% smaller than SOIC-16)

2 Applications

• Industrial PCs

• Wired networking

• Data center and enterprise computing

• Battery-powered systems

• PDAs

• Notebooks

• Palmtop PCs

• Hand-held equipment

3 Description

The TRSF3232E consists of two line drivers, two line

receivers, and a dual charge-pump circuit with ±15kV

ESD protection pin to pin (serial-port connection pins,

including GND). This device 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 3V to 5.5V supply. The

TRSF3232E operates at data signaling rates up to

1Mbit/s and a driver output slew rate of 14V/μs to

150V/μs.