Figure 1. Shutdown-Current Test Circuit (MAX206E,

MAX211E/MAX213E/MAX241E)

Figure 2. Receiver Output Enable and Disable Timing

(MAX205E/MAX206E/MAX211E/MAX213E/MAX241E)

PIN

NAME

FUNCTION

1, 2, 3, 28

VT_OUT

RS-232 Driver Outputs

4, 9, 18, 23, 27

R_IN

RS-232 Receiver Inputs

5, 8, 19, 22, 26

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.

6, 7, 20, 21

T_IN

TTL/CMOS Driver Inputs. Only the MAX211E, MAX213E, and MAX241E have internal pullups to VCC.

10

GND

Ground

11

VCC

+4.5V to +5.5V Supply Voltage

12, 14

C1+, C1-

Terminals for Positive Charge-Pump Capacitor

13

V+

+2VCC Voltage Generated by the Charge Pump

15, 16

C2+, C2-

Terminals for Negative Charge-Pump Capacitor

17

V-

-2VCC Voltage Generated by the Charge Pump

24

EN

Receiver Enable—Active Low (MAX211E, MAX241E)

EN

Receiver Enable—Active High (MAX213E)

25

SHDN

Shutdown Control—Active High (MAX211E, MAX241E)

SHDN

Shutdown Control—Active Low (MAX213E)

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Analog Devices │ 8

MAX202E–MAX213E,

MAX232E/MAX241E

±15kV ESD-Protected,

5V RS-232 Transceivers

Pin Descriptions (continued)

MAX211E/MAX213E/MAX241E

V+

GND

MAX206E

MAX211E

MAX213E

MAX241E

VCC

0.1µF

*

0.1µF

*

0.1µF

*

0.1µF

*

0.1µF

*

R1 TO R5

T1 TO T5

C1+

C1-

C2+

C2-

VCC

+5.5V

T_OUT

R_OUT

400kΩ

5kΩ

ISHDN

0V OR +5.5V

DRIVE

3kΩ

+5.5V

R_IN

T_IN

CAPACITORS MAY BE

POLARIZED OR UNPOLARIZED

( ) ARE FOR MAX213E

* 1µF FOR MAX241E

EN (EN)

SHDN (SHDN)

+5.5V (0V)

V-

+5.5V

+3.5V

EN

INPUT

OUTPUT ENABLE TIME

+2.5V

RECEIVER

OUTPUT

CL = 150pF

RECEIVER

OUTPUTS

OUTPUT DISABLE TIME

VOH- 0.1V

VOH

VOL

VOL+ 0.1V

RL= 1kΩ

NOTE:

POLARITY OF EN

IS REVERSED

FOR THE

MAX213E

+0.8V

0V

+3V

+3V

EN

INPUT

0V