ADM242 datasheet(4/9 Pages) AD

部品番号	ADM242

部品情報	High Speed, 5 V, 0.1 uF CMOS RS-232 Drivers/Receivers

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メーカー	AD [Analog Devices]

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ADM222/ADM232A/ADM242

REV. 0

–4–

PIN FUNCTION DESCRIPTION

Mnemonic

Function

V

CC

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+

External capacitor 1, (+ terminal) is connected

to this pin.

C1–

External capacitor 1, (– terminal) is connected

to this pin.

C2+

External capacitor 2, (+ terminal) is connected

to this pin.

C2–

External capacitor 2, (– terminal) is connected

to this pin.

T

IN

Transmitter (Driver) Inputs. These inputs accept

TTL/CMOS levels. An internal 400 k

Ω pull-up

resistor to V

CC is connected on each input.

T

OUT

Transmitter (Driver) Outputs. These are RS-232

levels (typically

±9 V).

R

IN

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.

R

OUT

Receiver Outputs. These are TTL/CMOS levels.

NC

No Connect. No connections are required to this

pin.

EN

(ADM242 Only) Active Low Digital Input. May

be used to enable or disable (three-state) both

receiver outputs.

SHDN

(ADM222 & ADM242) Active Low Digital

Input. May be used to disable the device so that

the power consumption is minimized. On the

ADM222 all drivers and receivers are disabled.

On the ADM242 the drivers are disabled but the

receivers remain enabled.

Figure 8. ADM222 DIP & SOIC Pin Configurations

Figure 7. ADM222 Typical Operating Circuit

Figure 5. Shutdown Test Circuit

tDT

+ 5V

TRANSMITTER

OUTPUT

SHDN

INPUT

– 5V

V+

0V

3V

V–

Figure 6. Transmitter Shutdown Disable Timing

NC = NO CONNECT

NC

C1+

VCC

C2+

C2–

V–

R1OUT

T1IN

V+

C1–

GND

T2OUT

T2IN

R2IN

R2OUT

R1IN

T1OUT

1

2

18

17

5

6

7

14

13

12

3

4

16

15

8

11

9

10

TOP VIEW

(Not to Scale)

ADM222

SHDN

VIN

VOUT

50pF

3k

Ω

SHDN

* INTERNAL 400k

Ω PULL-UP RESISTOR

ON EACH TTL/MOS INPUT

** INTERNAL 5k

Ω PULL-DOWN RESISTOR

ON EACH RS-232 INPUT

VCC

+5V TO +10V

VOLTAGE DOUBLER

+5V TO –10V

VOLTAGE INVERTER

C1+

C1–

V+

V–

C2+

C2–

T1

ADM222

T2

R1

R2

C1

0.1µF

C2

0.1µF

C3

0.1µF

GND

TTL/CMOS

OUTPUTS

R1OUT

R2OUT

T1OUT

T2OUT

R1IN

R2IN

T1IN

T2IN

TTL/CMOS

INPUTS

*

RS-232

OUTPUTS

RS-232

INPUTS

**

2

4

6

5

12

11

13

10

3

7

15

8

14

9

C4

0.1µF

+5V INPUT

C5

0.1µF

6.3V

17

16

18

SHDN

同様の部品番号 - ADM242

メーカー	部品番号	データシート	部品情報
Analog Devices	ADM242	207Kb / 11P	High-Speed, 5 V, 0.1 F CMOS RS-232 Drivers/Receivers REV. C
	ADM242AN	183Kb / 11P	High-Speed, 5 V, 0.1 F CMOS RS-232 Drivers/Receivers REV. B
	ADM242ANZ	183Kb / 11P	High-Speed, 5 V, 0.1 F CMOS RS-232 Drivers/Receivers REV. B
	ADM242ANZ	207Kb / 11P	High-Speed, 5 V, 0.1 F CMOS RS-232 Drivers/Receivers REV. C
	ADM242AR	183Kb / 11P	High-Speed, 5 V, 0.1 F CMOS RS-232 Drivers/Receivers REV. B

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同様の説明 - ADM242

メーカー	部品番号	データシート	部品情報
Analog Devices	ADM205	486Kb / 12P	0.1 uF, 5 V Powered CMOS RS-232 Drivers/Receivers REV. 0
	ADM222	207Kb / 11P	High-Speed, 5 V, 0.1 F CMOS RS-232 Drivers/Receivers REV. C
	ADM222	183Kb / 11P	High-Speed, 5 V, 0.1 F CMOS RS-232 Drivers/Receivers REV. B
	ADM202	305Kb / 6P	High Speed, 5 V, 0.1 uF CMOS RS-232 Driver/Receivers REV. 0
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	ADM232AARWZ	183Kb / 11P	High-Speed, 5 V, 0.1 關F CMOS RS-232 Drivers/Receivers REV. B
	ADM206	254Kb / 16P	0.1 μF, 5 V Powered CMOS RS-232 Drivers/Receivers Rev. D
	ADM207EARSZ	218Kb / 16P	0.1 muF, 5 V Powered CMOS RS-232 Drivers/Receivers REV. C
	ADM202JRNZ	127Kb / 6P	High-Speed, 5 V, 0.1 F CMOS RS-232 Driver/Receivers REV. A
	ADM202JNZ	127Kb / 6P	High-Speed, 5 V, 0.1 F CMOS RS-232 Driver/Receivers REV. A

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ADM242 データシート(PDF) 4 Page - Analog Devices

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