April 2006

Rev 3

1/17

17

Order code

Part number

Temperature range

Package

Comments

ST3241ECDR

0 to 70°C

SO-28 (Tape & Reel)

1000 parts per reel

ST3241EBDR

-40 to 85°C

SO-28 (Tape & Reel)

1000 parts per reel

ST3241ECPR

0 to 70°C

SSOP-28 (Tape & Reel)

1350 parts per reel

ST3241EBPR

-40 to 85°C

SSOP-28 (Tape & Reel)

1350 parts per reel

ST3241ECTR

0 to 70°C

TSSOP28 (Tape & Reel)

2500 parts per reel

ST3241EBTR

-40 to 85°C

TSSOP28 (Tape & Reel)

2500 parts per reel

ST3241E

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

RS-232 transceiver with auto-powerdown

General features

s

ESD Protection for RS-232 I/O pins:

±8KV IEC 1000-4-2 Contact discharge

±15KV Human body model

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1µA Supply current achieved when in auto-

powerdown

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250Kbps Minimum guaranteed data rate

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Guaranteed 6V/ms slew rate range

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Guaranteed mouse driveability

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0.1µF External capacitors

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Meet EIA/TIA-232 specifications down to 3V

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Available in SO-28, SSOP-28 and TSSOP28

packages

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 ±8KV USING IEC 1000-4-2 contact

discharge and ±15KV 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 3.0V to 5.5V supply with a

dual charge pump. The device is guaranteed to

run at data rates of 250kbps while maintaining

RS-232 output levels.

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

intended for notebook or subnotebook 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, subnotebook,

palmtop computers, battery-powered equipment,

hand-held equipment, peripherals and printers..

SOP

SSOP

TSSOP

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