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ADM1181AARW-REEL View Datasheet(PDF) - Analog Devices

Part NameDescriptionManufacturer
ADM1181AARW-REEL EMI/EMC-Compliant, ±15 kV, ESD-rotected RS-232 Line Drivers/Receivers ADI
Analog Devices ADI
ADM1181AARW-REEL Datasheet PDF : 16 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
EMI/EMC-Compliant, ±15 kV, ESD-Protected
RS-232 Line Drivers/Receivers
ADM202E/ADM1181A
FEATURES
Complies with 89/336/EEC EMC directive
ESD protection to IEC1000-4-2 (801.2)
±8 kV: contact discharge
±15 kV: air-gap discharge
±15 kV: human body model
EFT fast transient/burst immunity (IEC1000-4-4)
Low EMI emissions (EN55022)
230 kbits/s data rate guaranteed
TSSOP package option
Upgrade for MAX202E, 232E, LT1181A
APPLICATIONS
General-purpose RS-232 data link
Portable instruments
PDAs
GENERAL DESCRIPTION
The ADM202E and ADM1181A are robust, high speed,
2-channel RS-232/V.28 interface devices that operate from a
single 5 V power supply. Both products are suitable for operation
in harsh electrical environments and are compliant with the EU
directive on EMC (89/336/EEC). Both the level of electromagnetic
emissions and immunity are in compliance. EM immunity
includes ESD protection in excess of ±15 kV on all I/O lines,
fast transient/burst protection (1000-4-4), and radiated
immunity (1000-4-3). EM emissions include radiated and
conducted emissions as required by Information Technology
Equipment EN55022, CISPR22.
The ADM202E and ADM1181A conform to the EIA-232E
and CCITT V.28 specifications and operate at data rates up
to 230 kbps.
Four external 0.1 µF charge-pump capacitors are used for the
voltage doubler/inverter, permitting operation from a single
5 V supply.
FUNCTIONAL BLOCK DIAGRAMS
5V INPUT
0.1µF
10V
0.1µF
10V
C1+ +5V TO +10V VCC
VOLTAGE
C1– DOUBLER V+
C2+ +10V TO –10V V–
VOLTAGE
C2– INVERTER
C3
0.1µF
6.3V
C4
0.1µF
10V
C5
0.1µF
T1IN
T1
CMOS
INPUTS
T2IN
T2
T1OUT
T2OUT
EIA/TIA-232
OUTPUTS
R1OUT
R1
CMOS
OUTPUTS
R2OUT
R2
R1IN
R2IN
EIA/TIA-232
INPUTS*
GND ADM202E
*INTERNAL 5kPULL-DOWN RESISTOR ON EACH RS-232 INPUT
0.1µF
10V
0.1µF
10V
CMOS
INPUTS
T1IN
T2IN
Figure 1.
5V INPUT
C1+
+5V TO +10V
VOLTAGE
VCC
C1– DOUBLER V+
C2+ +10V TO –10V V–
VOLTAGE
C2– INVERTER
T1
T2
C5
0.1µF
C3
0.1µF
10V
C4 10V
0.1µF
10V
T1OUT
T2OUT
EIA/TIA-232
OUTPUTS
CMOS
OUTPUTS
R1OUT
R2OUT
R1
R2
GND ADM1181A
R1IN
R2IN
EIA/TIA-232
INPUTS*
*INTERNAL 5kPULL-DOWN RESISTOR ON EACH RS-232 INPUT
Figure 2.
The ADM202E provides a robust pin-compatible upgrade for
existing ADM202, ADM232L, or MAX202E/MAX232E sockets.
It is available in a 16-lead PDIP, a wide SOIC, a narrow SOIC,
and a space-saving TSSOP package that is 44% smaller than the
SOIC package.
The ADM1181A provides a robust pin-compatible upgrade for
the LTC1181A, and it is available in a 16-lead PDIP package
and a wide 16-lead SOIC package.
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2005 Analog Devices, Inc. All rights reserved.
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