1 Features

• ESD protection for RS-232 bus pins

– ±15kV (HBM)

– ±8kV (IEC61000-4-2, Contact discharge)

– ±15kV (IEC61000-4-2, Air-gap discharge)

• Meets or exceeds the requirements of TIA/

EIA-232-F and ITU V.28 standards

• Operates with 3V to 5.5V VCC supply

– Interoperable with RS-232 down to 2.7V VCC

• Operates up to 250kbps

• Two drivers and two receivers

• Low supply current: 300μA (typical)

• External capacitors: 4 × 0.1μF

• Accepts 5V logic input with 3.3V supply

• Available in near chip-scale package (QFN-16,

3mm x 3mm), 85% smaller than SOIC-16

• Pin compatible to alternative high-speed devices

(1Mbps)

– SN65C3232E (–40°C to +85°C)

– SN75C3232E (0°C to 70°C)

2 Applications

• Industrial PCs

• Wired networking

• Data center and enterprise computing

• Battery-powered systems

• Notebooks

• Palmtop PCs

• Hand-held equipment

3 Description

The TRS3232E device consists of two line drivers,

two-line receivers, and a dual charge-pump circuit

with ±15kV IEC 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 3V

to 5.5V supply. The devices operate at data signaling

rates up to 250kbps and a maximum of 30V/μs driver

output slew rate.