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ADM209AN Datasheet(PDF) 1 Page - Analog Devices

Part No. ADM209AN
Description  0.1 uF, 5 V Powered CMOS RS-232 Drivers/Receivers
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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TYPICAL OPERATING CIRCUIT
ADM211
SD
GND
10
25
RS-232
INPUTS**
*INTERNAL 400k
Ω PULL-UP RESISTOR ON EACH TTL/CMOS INPUT
**INTERNAL 5k
Ω PULL-DOWN RESISTOR ON EACH RS-232 INPUT
T1
IN
RS-232
OUTPUTS
TTL/CMOS
INPUTS*
T1
OUT
T2 IN
T4 IN
T2
OUT
T4
OUT
7
6
3
2
T2
T1
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
17
0.1
µF
16V
13
0.1
µF
6.3V
+5V INPUT
V
CC
V+
V–
C1+
C1–
C2+
C2–
0.1
µF
16V
11
0.1
µF
14
12
0.1
µF
16V
16
15
T3
IN
T3
OUT
20
1
T3
21
28
T4
TTL/CMOS
OUTPUTS
R3
IN
R4
IN
R3
OUT
R4
OUT
R4
R3
24
EN
27
23
22
26
R1
IN
R2
IN
R1
OUT
R2
OUT
R2
R1
9
4
5
8
R5
IN
R5
OUT
R5
18
19
REV. 0
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.
a
0.1 F, +5 V Powered
CMOS RS-232 Drivers/Receivers
ADM205–ADM211/ADM213
FEATURES
0.1
F to 10
F Capacitors
120 kB/s Data Rate
2 Receivers Active in Shutdown (ADM213)
On-Board DC-DC Converters
9 V Output Swing with +5 V Supply
Low Power (15 mW)
Low Power Shutdown
≤5 W
30 V Receiver Input Levels
Latch-Up FREE
Plug-In Upgrade for MAX205-211/213
APPLICATIONS
Computers
Peripherals
Modems
Printers
Instruments
© Analog Devices, Inc., 1994
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
GENERAL DESCRIPTION
The ADM2xx family of line drivers/receivers is intended for all
EIA-232-E and V.28 communications interfaces, especially in
applications where
±12 V is not available. The ADM205,
ADM206, ADM211 and ADM213 feature a low power shut-
down mode which reduces power dissipation to less than 5
µW
making them ideally suited for battery powered equipment. The
ADM205 does not require any external components and is par-
ticularly useful in applications where printed circuit board space
is critical. The ADM213 has an active-low shutdown and an
active-high receiver enable control. Two receivers of the
ADM213 remain active during shutdown. This feature is useful
for ring indicator monitoring.
All members of the ADM2xx family, except the ADM209, in-
clude two internal charge pump voltage converters which allow
operation from a single +5 V supply. These converters convert
the +5 V input power to the
±10 V required for RS-232 output
levels. The ADM209 is designed to operate from +5 V and
+12 V supplies. An internal +12 V to –12 V charge pump volt-
age converter generates the –12 V supply.
Table I. Selection Table
No. of
No. of
Low Power
TTL
No. of Receivers
Part
Power
RS-232
RS-232
External
Shutdown
Three-State
Active in
Number
Supply Voltage
Drivers
Receivers
Capacitors
(SD)
EN
Shutdown
ADM205
+5 V
5
5
None
Yes
Yes
0
ADM206
+5 V
4
3
4
Yes
Yes
0
ADM207
+5 V
5
3
4
No
No
0
ADM208
+5 V
4
4
4
No
No
0
ADM209
+5 V & +9 V to +13.2 V
3
5
2
No
Yes
0
ADM211
+5 V
4
5
4
Yes
Yes
0
ADM213
+5 V
4
5
4
Yes (SD)
Yes (EN)
2




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