ST3241EB_10 Datasheet, PDF (1/13 Pages) STMicroelectronics – ±15 kV ESD protected 3 to 5.5 V, 400 kbps, RS-232 transceiver with auto-power-down

ST3241EB
ST3241EC
±15 kV ESD protected 3 to 5.5 V, 400 kbps,
RS-232 transceiver with auto-power-down
Features
■ ESD protection for RS-232 I/O pins:
±8 kV IEC 1000-4-2 contact discharge
±15 kV human body model
■ 1 µA supply current achieved when in auto-
power-down
■ 250 kbps minimum guaranteed data rate
■ Guaranteed 6 V/ms slew rate range
■ Guaranteed mouse drive ability
■ 0.1 µF external capacitors
■ Meets EIA/TIA-232 specifications down to 3 V
■ Available in SSOP-28 package
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 inputs 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.
SSOP-28
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 outputs are always active.
Typical applications are in notebooks, sub-
notebooks, palmtop computers, battery-powered
equipment, hand-held equipment, peripherals and
printers.
Table 1. Device summary
Order code Temperature range
ST3241ECPR
0 to 70°C
ST3241EBPR
–40 to 85°C
Package
SSOP-28 (tape and reel)
SSOP-28 (tape and reel)
Packaging
1350 parts per reel
1350 parts per reel
September 2010
Doc ID 9066 Rev 5
1/13
www.st.com
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