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MAX202E–MAX213E,

MAX232E/MAX241E

±15kV ESD-Protected,

5V RS-232 Transceivers

V+

GND

MAX206E

MAX211E

MAX213E

MAX241E

0.1

0.1

R1 TO R5

T1 TO T5

0.1

C1+

C1-

C2+

C2-

+5.5V

T_OUT

R_OUT

400k

Ω

5k

Ω

0V OR +5.5V

DRIVE

0.1

0.1

3k

Ω

+5.5V

R_IN

T_IN

CAPACITORS MAY BE

POLARIZED OR UNPOLARIZED

( ) ARE FOR MAX213E

EN (EN)

SHDN (SHDN)

+5.5V (0V)

V-

+5.5V

Figure 1. Shutdown-Current Test Circuit (MAX206E,

MAX211E/MAX213E/MAX241E)

+3.5V

EN

INPUT

OUTPUT ENABLE TIME

+2.5V

RECEIVER

OUTPUT

RECEIVER

OUTPUTS

OUTPUT DISABLE TIME

Ω

NOTE:

POLARITY OF EN

IS REVERSED

FOR THE

MAX213E

+0.8V

0V

+3V

+3V

EN

INPUT

0V

Figure 2. Receiver Output Enable and Disable Timing

(MAX205E/MAX206E/MAX211E/MAX213E/MAX241E)

17

NAME

FUNCTION

V-

T_OUT

RS-232 Driver Outputs

R_IN

RS-232 Receiver Inputs

24

R_OUT

TTL/CMOS Receiver Outputs. For the MAX213E, receivers R4 and R5 are active in shutdown

mode when EN = 1. For the MAX211E and MAX241E, all receivers are inactive in shutdown.

PIN

1, 2, 3, 28

4, 9, 18, 23, 27

EN

T_IN

Receiver Enable—Active High (MAX213E)

GND

Ground

25

+4.5V to +5.5V Supply Voltage

SHDN

C1+, C1-

Terminals for Positive Charge-Pump Capacitor

5, 8, 19, 22, 26

6, 7, 20, 21

10

Shutdown Control—Active Low (MAX213E)

V+

C2+, C2-

Terminals for Negative Charge-Pump Capacitor

11

12, 14

13

15, 16

EN

Receiver Enable—Active Low (MAX211E, MAX241E)

SHDN

Shutdown Control—Active High (MAX211E, MAX241E)

Pin Descriptions (continued)

MAX211E/MAX213E/MAX241E