ADM202JRW datasheet(3/6 Pages) AD

Teilenummer	ADM202JRW

Bauteilbeschribung	High-Speed, 5 V, 0.1 uF CMOS RS-232 Driver/Receivers

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Hersteller	AD [Analog Devices]

Direct Link	http://www.analog.com

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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+

INTERNAL

+10V POWER

SUPPLY

C2+

C2–

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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