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.