MAX231CSLASHD datasheet(7/36 Pages) MAXIM

7 / 36 page

+5V-Powered, Multichannel RS-232

Drivers/Receivers

_______________________________________________________________________________________

8.5

6.5

4.5

5.5

TRANSMITTER OUTPUT

VOLTAGE (VOH) vs. VCC

7.0

8.0

VCC (V)

5.0

7.5

1 TRANSMITTER

LOADED

3 TRANS-

MITTERS

LOADED

4 TRANSMITTERS

LOADED

2 TRANSMITTERS

LOADED

TA = +25°C

C1–C4 = 1

µF

TRANSMITTER

LOADS =

Ω || 2500pF

7.4

6.0

2500

TRANSMITTER OUTPUT VOLTAGE (VOH)

vs. LOAD CAPACITANCE AT

DIFFERENT DATA RATES

6.4

6.2

7.2

7.0

LOAD CAPACITANCE (pF)

1500

1000

500

2000

6.8

6.6

160kbits/sec

80kbits/sec

20kbits/sec

TA = +25°C

VCC = +5V

3 TRANSMITTERS LOADED

RL = 3k

Ω

C1–C4 = 1

µF

12.0

4.0

2500

TRANSMITTER SLEW RATE

vs. LOAD CAPACITANCE

6.0

5.0

11.0

9.0

10.0

LOAD CAPACITANCE (pF)

1500

1000

500

2000

8.0

7.0

TA = +25°C

VCC = +5V

LOADED, RL = 3k

Ω

C1–C4 = 1

µF

1 TRANSMITTER LOADED

2 TRANSMITTERS

LOADED

3 TRANSMITTERS

LOADED

4 TRANSMITTERS

LOADED

-6.0

-9.0

4.5

5.5

TRANSMITTER OUTPUT

VOLTAGE (VOL) vs. VCC

-8.0

-8.5

-6.5

-7.0

VCC (V)

5.0

-7.5

4 TRANS-

MITTERS

LOADED

TA = +25°C

C1–C4 = 1

µF

TRANSMITTER

LOADS =

Ω || 2500pF

1 TRANS-

MITTER

LOADED

2 TRANS-

MITTERS

LOADED

3 TRANS-

MITTERS

LOADED

-6.0

-7.6

02500

TRANSMITTER OUTPUT VOLTAGE (VOL)

vs. LOAD CAPACITANCE AT

DIFFERENT DATA RATES

-7.0

-7.2

-7.4

-6.2

-6.4

LOAD CAPACITANCE (pF)

1500

1000

500

2000

-6.6

-6.8

160kbits/sec

80kbits/sec

20Kkbits/sec

TA = +25°C

VCC = +5V

3 TRANSMITTERS LOADED

RL = 3k

Ω

C1–C4 = 1

µF

-10

10 15 20

25 30

35 40 45 50

TRANSMITTER OUTPUT VOLTAGE (V+, V-)

vs. LOAD CURRENT

-2

-6

-4

-8

CURRENT (mA)

V+ AND V-

EQUALLY

LOADED

V- LOADED,

NO LOAD

ON V+

TA = +25°C

VCC = +5V

C1–C4 = 1

µF

ALL TRANSMITTERS UNLOADED

V+ LOADED,

NO LOAD

ON V-

__________________________________________Typical Operating Characteristics

MAX223/MAX230–MAX241

*SHUTDOWN POLARITY IS REVERSED

FOR NON MAX241 PARTS

V+, V- WHEN EXITING SHUTDOWN

µF CAPACITORS)

MAX220-13

SHDN*

V-

V+

500ms/div

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