ADM211AR Analog Devices Inc, ADM211AR Datasheet - Page 8
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ADM211AR
Manufacturer Part Number
ADM211AR
Description
IC TXRX RS-232 5V 0.1UF 28SOIC
Manufacturer
Analog Devices Inc
Type
Transceiverr
Datasheet
1.ADM211ARSZ.pdf
(16 pages)
Specifications of ADM211AR
Rohs Status
RoHS non-compliant
Number Of Drivers/receivers
4/5
Protocol
RS232
Voltage - Supply
4.5 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
28-SOIC (7.5mm Width)
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ADM206–ADM211/ADM213
Table 4. Pin Function Descriptions
Mnemonic
V
V+
V–
GND
C+
C–
C1+
C1–
C2+
C2–
T
T
R
R
EN/EN
SD/SD
NC
Table 5. ADM206 and ADM211 Truth Table
SD
0
0
1
Table 6. ADM213 Truth Table
SD
0
0
1
1
IN
OUT
IN
OUT
CC
EN
0
1
0
EN
0
1
0
1
Function
Power Supply Input. 5 V ± 10%.
Internally Generated Positive Supply (10 V nominal) on all parts, except ADM209 . The ADM209 requires an external 9 V to
13.2 V supply.
Internally Generated Negative Supply (–10 V Nominal).
Ground Pin. Must be connected to 0 V.
(ADM209 only) External capacitor (+ terminal) is connected to this pin.
(ADM209 only) External capacitor (– terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (+ terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (– terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (+ terminal) is connected to this pin.
(ADM206, ADM207, ADM208, ADM211, and ADM213) External Capacitor (– terminal) is connected to this pin.
Transmitter (Driver) Inputs. These inputs accept TTL/CMOS levels. An internal 400 kΩ pull-up resistor to V
each input.
Transmitter (Driver) Outputs. These are RS-232 levels (typically ± 10 V).
Receiver Inputs. These inputs accept RS-232 signal levels. An internal 5 kΩ pull-down resistor to GND is connected to each
input.
Receiver Outputs. These are TTL/CMOS levels.
Enable Input. Active low on ADM206, ADM209, and ADM211. Active high on ADM213. This input is used to enable/disable the
receiver outputs. With EN = low (EN = high ADM213), the receiver outputs are enabled. With EN = high (EN = low ADM213),
the outputs are placed in a high impedance state. This is useful for connecting to microprocessor systems.
Shutdown Input. Active high on ADM206 and ADM211. Active low on ADM213. With SD = high on the ADM206 and ADM211,
the charge pump is disabled, the receiver outputs are placed in a high impedance state, and the driver outputs are turned off.
With SD = low on the ADM213, the charge pump is disabled, the driver outputs are turned off, and all receivers, except R4
and R5, are placed in a high impedance state. In shutdown, the power consumption reduces to 5 µW.
No Connect. No connections are required to this pin.
Status
Normal Operation
Normal Operation
Shutdown
Status
Shutdown
Shutdown
Normal Operation
Normal Operation
Disabled
Transmitters T1–T4
Disabled
Enabled
Enabled
Transmitters T1–T5
Enabled
Enabled
Disabled
Rev. C | Page 8 of 16
Receivers R1–R3
Disabled
Disabled
Disabled
Enabled
Receivers R1–R5
Enabled
Disabled
Disabled
Receivers R4, R5
Disabled
Enabled
Disabled
Enabled
CC
is connected to