UM232EESE Datasheet, PDF (1/11 Pages) Union Semiconductor, Inc. – High ESD-Protected, Fail-Safe, Single Supply RS-232 Transceivers

UM232EExE
High ESD-Protected, Fail-Safe, Single Supply RS-232
Transceivers
UM232EESE SOP16
UM232EEPE DIP16
UM232EEUE TSSOP16
General Description
The UM232EExE series are low power single supply RS232 interface. The device consists of two
line drivers, two line receivers, and dual charge pump circuit. The device meets the requirements
of TIA/EIA-232 standard and provides the electrical interface between an asynchronous
communication controller and the serial-port connector. The on chip charge pump and four small
external capacitors act as onboard DC to DC converter, allow chip operated from single 5V
supply, eliminating the need for ±10V power supplies, reduce cost and board space. The device
operates at data signaling rates over 250Kbps. The slew rate of driver is set internally less than
30V/μs and the receivers feature internal noise filtering, eliminating the need for external slew
rate and filter capacitors for reliable operation. The driver inputs and receiver outputs are TTL and
CMOS compatible. UM232EExE comes in 16 pin DIP, SOP and TSSOP packages, operating over
the commercial and industrial temperature ranges.
The ESD tolerance has been upgraded on these devices to over ±15KV for both Human Body
Model and IEC61000-4-2 Air Discharge Method, without latch-up. The device operates with four
0.1μF capacitors, reduce system cost and board space.
Applications
 Notebook and Palmtop Computers
 Battery-Powered Equipment
 Hand-Held Equipment
 POS terminal
Features
 ESD Protection for RS-232 Bus Pins up to ±15kV Human Body Model
 Single +5V power supply
 Low power, I_CC 15mA maximum
 Operates up to 250Kbps
 Receiver Noise Filter
 Latch-Up Performance Exceeds 200mA
Ordering Information
Part Number
UM232EESE
UM232EEPE
UM232EEUE
Temp. Range
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Package Type
SOP16
DIP16
TSSOP16
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http://www.union-ic.com Rev.04 Jan.2013
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