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Analog Devices - (AD230 - AD241) CMOS RE-232 Drivers / Receivers

Numéro de référence AD234
Description (AD230 - AD241) CMOS RE-232 Drivers / Receivers
Fabricant Analog Devices 
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AD234 fiche technique
-D~ ~5C-c::t\ +~VI u
,. ANALOG
+5 V Powered
W DEVICES
CMOSRS-232Drivers/Receivers
FEATURES
Single 5 V Power Supply
Meets All RS-232-C and V.28 Specifications
Multiple Drivers and Receivers
On-Board DC-DC Converters
:t:9 V Output Swing with +5 V Supply
low Power CMOS: 5 mA Operation
low Power Shutdown $1 p.A
3-State TTl/CMOS Receiver Outputs
:t:30 V Receiver Input levels
Plug-In Replacement for MAX230-241
APPLICATIONS
Computers
Peripherals
OModems
Printers
BInstruments
SGENERAL DESCRIPTION
OThe AD230 family of 5 V only, RS-232 line drivers/receivers
provides a variety of configurations to fit most communication
Lneeds, especially in applications where :t 12 V is not available.
EThe AD230, AD235, AD236 and AD241 feature a low power
shutdown mode which reduces power dissipation to less than
TE5 j.LW making them ideally suited for battery powered equip-
1\ll members of the AD230 family, except the AD231 and the
AD239, include tWointernal charge pump voltage converters
which allow operation from a single +5 V supply. These con-
verters convert the + 5 V input power to the :t 10 V required for
RS-232 output levels. The AD231 and AD239 are designed to
operate from +5 V and + 12 V supplies. An internal + 12 V to
- 12 V charge pump voltage converter generates the - 12 V
supply.
ment. The AD233 and AD235 do not require any external com- In order to minimize the package count in all applications, a
ponents and are particularly useful in applications where printed wide selection of driver/receiver combinations is available (see
circuit board space is critical.
table below).
SELECTION TABLE
Part
Number
AD230
AD231
AD232
AD233
AD234
AD235
AD236
AD237
AD238
AD239
AD241
Power
Supply Voltage
+5 V
+5 V & +7.5 V
to 13.2V
+5 V
+5 V
+5 V
+5 V
+5 V
+5 V
+5 V
+5 V & +12 V
+5 V
No. of
RS-232
Drivers
5
2
2
2
4
5
4
5
4
3
4
No. of
RS-232
Receivers
0
2
2
2
0
5
3
3
4
5
5
External
Capacitors
4
2
4
None
4
None
4
4
4
2
4
Low Power
Shutdown
(SD)
Yes
No
TTL
Three-State
EN
No
No
No No
No No
No No
Yes Yes
Yes Yes
No No
No No
No Yes
Yes Yes
No. of
Pins
20
14
16
20
16
24
24
24
24
24
28
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
Twx: 710/394-6577
Telex: 924491
Cable: ANALOG NORWOODMASS
"

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