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ADM202 Datasheet(PDF) 3 Page - Analog Devices

Part No. ADM202
Description  High-Speed, 5 V, 0.1 F CMOS RS-232 Driver/Receivers
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADM202 Datasheet(HTML) 3 Page - Analog Devices

   
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REV. A
ADM202/ADM203
–3–
PIN FUNCTION DESCRIPTION
Mnemonic
Function
VCC
Power Supply Input 5 V
± 10%.
V+
Internally Generated Positive Supply (+10 V nominal).
V–
Internally Generated Negative Supply (–10 V nominal).
GND
Ground Pin. Must be connected to 0 V.
C1+
ADM202 External Capacitor, (+ terminal) is connected to this pin.
ADM203: The capacitor is connected internally and no external capacitor is required.
C1–
ADM202 External Capacitor, (– terminal) is connected to this pin.
ADM203: The capacitor is connected internally and no external capacitor is required.
C2+
ADM202 External Capacitor, (+ terminal) is connected to this pin.
ADM203: The capacitor is connected internally and no external capacitor is required.
C2–
ADM202 External Capacitor, (– terminal) is connected to this pin.
ADM203: The capacitor is connected internally and no external capacitor is required.
TIN
Transmitter (Driver) Inputs. These inputs accept TTL/CMOS levels. An internal 400 k
Ω pull-up resistor to VCC is
connected on each input.
TOUT
Transmitter (Driver) Outputs. These are RS-232 levels (typically
±10 V).
RIN
Receiver Inputs. These inputs accept RS-232 signal levels. An internal 5 k
Ω pull-down resistor to GND is
connected on each of these inputs.
ROUT
Receiver Outputs. These are TTL/CMOS levels.
ADM202
0.1 F
6.3V
0.1 F
16V
C1+
C1–
C2–
C2+
T1IN
T1
T1OUT
T2IN
T2
T2OUT
TTL/CMOS
INPUTS*
RS-232
OUTPUTS
R1OUT
R1
R1IN
R2OUT
R2IN
TTL/CMOS
OUTPUTS
RS-232
INPUTS**
R2
V–
0.1 F
16V
+10V TO –10V
VOLTAGE
INVERTER
0.1 F
6.3V
0.1 F
6.3V
5V INPUT
V+
VCC
+5V TO +10V
VOLTAGE
DOUBLER
GND
T1IN
T1
T1OUT
T2IN
T2
T2OUT
TTL/CMOS
INPUTS*
RS-232
OUTPUTS
R1OUT
R1
R1IN
R2OUT
R2IN
TTL/CMOS
OUTPUTS
RS-232
INPUTS**
R2
5V INPUT
VCC
DO NOT MAKE
CONNECTIONS
TO THESE PINS
C1+
C1–
INTERNAL
–10V POWER
SUPPLY
V–
V–
V+
INTERNAL
+10V POWER
SUPPLY
C2+
C2+
C2–
C2–
GND
GND
ADM203
*INTERNAL 400k
PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
**INTERNAL 5k
PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
*INTERNAL 400k
PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
**INTERNAL 5k
PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 1. Typical Operating Circuits
DIP/SOIC
TOP VIEW
(Not to Scale)
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
C1+
V+
C1–
C2+
C2–
V–
GND
ADM202
T2OUT
R2IN
VCC
T1OUT
R1IN
R1OUT
T1IN
T2IN
R2OUT
DIP
TOP VIEW
(Not to Scale)
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
ADM203
T2IN
T1IN
R1OUT
R1IN
T1OUT
GND
VCC
C1+
GND
C2–
R2OUT
R2IN
T2OUT
V–
C2–
C2+
V+
C1–
V–
C2+
PIN CONFIGURATIONS


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