UT3222_15 Datasheet, PDF (1/7 Pages) Unisonic Technologies – LOW POWER MULTI CHANNEL

UNISONIC TECHNOLOGIES CO., LTD
UT3222
Preliminary
3.0V TO 5.5V LOW POWER
MULTICHANNEL RS-232 LINE
TRANSCEIVERS USING FOR
0.1μF EXTERNAL CAPACITORS
 DESCRIPTION
The UTC UT3222 have two receivers and two drivers, and a dual
charge-pump circuit. 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 3.0V to 5.5V supply. The device operates at data
signaling rates up to 250kbit/s and a maximum of 35V/μs driver output
slew rate.
The UTC UT3222 can be placed in the power-down mode by
setting PWRDOWN low, which draws only 1μA from the power
supply. When the device is powered down, the receivers remain
active while the drivers are placed in the high-impedance state. Also,
during power down, the onboard charge pump is disabled; V+ is
lowered to V_CC and V− is raised toward GND. Receiver outputs also
can be placed in the high-impedance state by setting EN high.
 FEATURES
* Exceeds ±8KV ESD Protection(HBM) for RS-232 I/O Pins
* Meets the Requirements of TIA/EIA-232-F and ITU V.28 Standards
* Operates With 3.0V to 5.5V V_CC Supply
* Operates Up To 250kbit/s Data Rate
* Two Drivers and Two Receivers
* Low Standby Current 1μA Typical
* External Capacitors 4×0.1μF
* Accepts 5.0V Logic Input With 3.3V Supply
 ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UT3222L-P20-R
UT3222G-P20-R
Package
TSSOP-20
CMOS IC
TSSOP-20
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
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