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UNISONIC TECHNOLOGIES - +3.0V TO +5.5V POWER SUPPLY 235KBPS MULTICHANNAEL RS-232 LINE DRIVERS - RECEIVERS

Numéro de référence UT3243
Description +3.0V TO +5.5V POWER SUPPLY 235KBPS MULTICHANNAEL RS-232 LINE DRIVERS - RECEIVERS
Fabricant UNISONIC TECHNOLOGIES 
Logo UNISONIC TECHNOLOGIES 





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UT3243 fiche technique
UNISONIC TECHNOLOGIES CO., LTD
UT3243
+3.0V TO +5.5V POWER
SUPPLY, 235KBPS,
MULTICHANNAEL RS-232 LINE
DRIVERS/RECEIVERS
CMOS IC
DESCRIPTION
The UTC UT3243 consists of 3 drivers and 5 receivers. It meets
ElA/TIA-232 and V.28/V.24 specifications, it intended for notebook
computer applications. A high-efficiency, dual charge-pumps power
supply and a low-dropout transmitter combine to deliver true RS-232
performance from a single +3.0V ~ +5.5V power supply. A
guaranteed data rate of 120kbps provides compatibility with popular
software for communicating with PCs.
The UTC UT3243 achieves 1µA supply current in s hutdown condition. When the UT3243 doesn’t detect a val id
signal lev el o n its receiver inputs, the on- board p ower su pply a nd drivers will sh utdown, and when a valid level is
applied to an y RS-232 rec eiver input, then the s ystem turn s on agai n. T herefore, the s ystem saves po wer without
changes to the existing BIOS or operating system.
The UTC UT3243 requires only 0.1µF capacitors in 3.3V operation, and can operate from input vo ltages ranging
from + 3.0V ~ +5.5V. It is ideal for 3.3V-o nly s ystems, 5.0V-only s ystems, or mixed 3.3V and 5.0V s ystems that
require true RS-232 performance.
The UTC UT3243 includes one complementary always-active receiver that can monitor an external device (such
as a mo dem) in shutdown, without for ward biasing the protection diodes in a UART that ma y have VCC completel y
removed.
FEATURES
* Operates With 3.0V ~ 5.5V Power Supply
* Three Drivers and Five Receivers
* Operates Up To 235 kbps
* Designed to Transmit at a Data Rate of 235 kbps
* Low Standby Current (1uA Typical)
* External Capacitors (4*0.1µF)
* Accepts 5.0V Logic Input With 3.3V Supply
* Always-Active Non-inverting Receiver Output (R2OUTB)
* Serial-Mouse Drivability
* ESD(HBM) Protected ±8KV(MIN.)
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UT3243L-P28-T
UT3243G-P28-T
UT3243L-P28-R
UT3243G-P28-R
UT3243L-R28-T
UT3243G-R28-T
UT3243L-R28-R
UT3243G-R28-R
Package Packing
TSSOP-28
TSSOP-28
SSOP-28
SSOP-28
Tube
Tape Reel
Tube
Tape Reel
UT3243L-P28-R
(1)Packing Type
(2)Package Type
(3)Lead Free
(1) R: Tape Reel
(2) P28: TSSOP-28, R28: SSOP-28
(3) L: Lead Free, G: Halogen Free
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
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QW-R502-573.F
http://www.Datasheet4U.com

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