November 2007

Rev 4

1/15

15

ST3241EB

ST3241EC

±15 kV ESD protected 3 to 5.5 V, 400 kbps,

RS-232 transceiver with auto-power-down

Features

±8 kV IEC 1000-4-2 contact discharge

±15 kV human body model

power-down

Description

The ST3241E device consists of 3 drivers, 5

receivers and a dual charge-pump circuit. The

device meets the requirements of EIA/TIA and

V.28/V.24 communication standards providing

high data rate capability and enhanced

electrostatic discharge (ESD) protection. All

transmitter outputs and receiver input are

protected to ±8 kV USING IEC 1000-4-2 contact

discharge and ±15 kV using the human body

model. The receiver R2 is always active to

implement a wake-up feature for serial port.

The ST3241E has a proprietary low-dropout

transmitter output stage enabling true RS-232

performance from a 3.0 V to 5.5 V supply with a

dual charge pump. The device is guaranteed to

run at data rates of 250 kbps while maintaining

RS-232 output levels.

It is a complete serial port (3 drivers, 5 receivers)

intended for notebook or sub-notebook

computers. Receivers R1 and R2 have extra

outputs in addition to their standard outputs.

These extra output are always active.

Typical application are in notebook, sub-

notebook, palmtop computers, battery-powered

equipment, hand-held equipment, peripherals and

printers.

SSOP

TSSOP

Table 1.

Device summary

Order code

Temperature range

Package

Packaging

ST3241ECPR

0 to 70°C

SSOP-28 (tape and reel)

1350 parts per reel

ST3241EBPR

-40 to 85°C

SSOP-28 (tape and reel)

1350 parts per reel

ST3241EBTR

-40 to 85°C

TSSOP28 (tape and reel)

2500 parts per reel

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