MAX241C 查看數據表（PDF） - Maxim Integrated

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MAX241C

+5V-Powered, Multichannel RS-232 Drivers/Receivers

Maxim Integrated 

+5V-Powered, Multichannel RS-232

Drivers/Receivers

__________________________________________Typical Operating Characteristics

MAX225/MAX244–MAX249

18

16

14

12

10

8

6

4

2

0

TRANSMITTER SLEW RATE

vs. LOAD CAPACITANCE

VCC = 5V

EXTERNAL POWER SUPPLY

1µF CAPACITORS

40kb/s DATA RATE

8 TRANSMITTERS

LOADED WITH 3kΩ

1

2

3

4

5

LOAD CAPACITANCE (nF)

OUTPUT VOLTAGE

vs. LOAD CURRENT FOR V+ AND V-

10

8

V+ AND V- LOADED

6

4 VCC = 5V

2

EXTERNAL CHARGE PUMP

1µF CAPACITORS

0 8 TRANSMITTERS

-2

DRIVING 5kΩ AND

2000pF AT 20kbits/sec

-4

EITHER V+ OR

V- LOADED

V- LOADED

-6 V+ AND V- LOADED

-8

V+ LOADED

-10

0 5 10 15 20 25 30 35

LOAD CURRENT (mA)

TRANSMITTER OUTPUT VOLTAGE (V+, V-)

vs. LOAD CAPACITANCE AT

DIFFERENT DATA RATES

9.0

VCC = 5V WITH ALL TRANSMITTERS DRIVEN

8.5

LOADED WITH 5kΩ

10kb/sec

8.0

20kb/sec

7.5

40kb/sec

7.0

60kb/sec

6.5

6.0

100kb/sec

200kb/sec

5.5

ALL CAPACITIORS 1µF

5.0

0

1

2

3

4

5

LOAD CAPACITANCE (nF)

10 ______________________________________________________________________________________

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