RS232 datasheet(6/20 Pages) LINER

Part #	RS232

Description	Transceivers

Download	20 Pages

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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6

LTC1321/LTC1322/LTC1335

TYPICAL PERFORMANCE CHARACTERISTICS

RS485 Receiver

tPLH – tPHL

vs Temperature

Receiver Output Low Voltage

vs Temperature

OUTPUT VOLTAGE (V)

0

0.5

1.0

2.0

1.5

2.5

3.0

1321 G14

40

35

30

25

20

15

10

5

0

TA = 25°C

Receiver Output Current

vs Output Low Voltage

EIA562 Receiver Input Threshold

Voltage vs Temperature

TEMPERATURE (°C)

–50

2.0

1.8

1.6

1.4

1.2

1.0

0.8

25

75

1321 G15

–25

0

50

100

125

INPUT HIGH

INPUT LOW

TEMPERATURE (°C)

–50

500

450

400

350

300

250

200

150

100

50

0

50

75

1321 G18

–25

25

100

125

ICC

–IEE

–IDD

RL = ∞

Supply Current in EIA562 Mode

vs Temperature (Both Ports)

Supply Current in RS485 Mode

vs Temperature (Both Ports)

TEMPERATURE (°C)

–50

1.2

1.0

0.8

0.6

0.4

0.2

0

25

75

1321 G17

–25

0

50

100

125

ICC

–IEE

–IDD

RL = ∞

TEMPERATURE (°C)

–50

20

18

16

14

12

10

8

6

4

2

0

50

75

1321 G12

–25

25

100

125

TEMPERATURE (°C)

–50

0.5

0.4

0.3

0.2

0.1

0

50

75

1321 G11

–25

25

100

125

IOUT = 3mA

TEMPERATURE (°C)

–50

100

1321 G06

050

±400

±350

±300

±250

±200

±150

±100

±50

0

– 25

25

75

125

Driver Output Leakage Current

(Disable/Shutdown) vs Temperature

OUTPUT VOLTAGE (V)

2.0

2.5

3.0

3.5

4.0

1321 G13

4.5

120

18

16

14

12

10

8

6

4

2

0

5.0

TA = 25°C

Receiver Output Current

vs Output High Voltage

Receiver Output High Voltage

vs Temperature

TEMPERATURE (°C)

–50

5.0

4.9

4.8

4.7

4.6

4.5

4.4

4.3

4.2

4.1

4.0

0

50

75

1321 G10

–25

25

100

125

IOUT = 3mA

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