ST3222E_06 Datasheet, PDF (1/18 Pages) STMicroelectronics – ± 15KV ESD-protected, 3 to 5.5V Low power, up to 250KBps, RS-232 drivers and receivers

ST3222E
± 15KV ESD-protected, 3 to 5.5V
Low power, up to 250KBps, RS-232 drivers and receivers
General features
I ESD protection for RS-232 I/O pins ± 15KV
human body model, ± 8KV IEC 1000-4-2
contact discharge
I 300µA supply current
I 250KBps minimum guarantee data rate
I 6V/µs minimum guarantee slew rate
I Meet EIA/TIA-232 specification down to 3V
I Available in SO-18, SSOP20 and TSSOP20
Description
The ST3222E is a 3V powered EIA/TIA-232 and
V.28/V.24 communications interface with low
power requirements, high data-rate capabilities
and enhanced electrostatic discharge (ESD)
protection to ±8kV using IEC1000-4-2 Contact
Discharge and ±15kV using the Human Body
Model. ST3222E has a proprietary low dropout
transmitter output stage providing true RS-232
performance from 3 to 5V supplies with a dual
charge pump. The charge pump requires only
four small 0.1mF external capacitors for operation
form 3V supply. The device has two receivers
and two drivers. The ST3222E features a 1mA
shutdown mode that reduces power consumption
and extends battery life in portable systems. Its
receivers can remain active in shutdown mode,
SOP
SSOP
TSSOP
allowing external devices such as modems to be
monitored using only 1mA supply current. The
device is guaranteed to run at data rates of
250Kbps while maintaining RS-232 output levels.
Typical applications are Notebook, Sub-notebook
and Palmtop Computers, Battery Powered
Equipment, Hand-Held Equipment, Peripherals
and Printers.
Order code
Part number
Temperature
range
ST3222ECDR
ST3222ECPR
ST3222EBPR
ST3222ECTR
ST3222EBTR
0 to 70 °C
0 to 70 °C
-40 to 85 °C
0 to 70 °C
-40 to 85 °C
Package
SO-18 (Tape & Reel)
SSOP20 (Tape & Reel)
SSOP20 (Tape & Reel)
TSSOP20 (Tape & Reel)
TSSOP20 (Tape & Reel)
Comments
1000 parts per reel
1350 parts per reel
1350 parts per reel
2500 parts per reel
2500 parts per reel
March 2006
Rev 6
1/
www.st.com
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