MAX3223ECTP datasheet(6/19 Pages) MAXIM

Part #	MAX3223ECTP

Description	15,-15kV ESD-Protected, 1muA, 3.0V to 5.5V, 250kbps, RS-232 Transceivers

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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±15kV ESD-Protected, 1µA, 3.0V to 5.5V, 250kbps,

RS-232 Transceivers with AutoShutdown

Pin Description

MAX3221E

MAX3223E

MAX3243E

TQFN-

EP

SSOP/

TSSOP

TQFN-

EP

DIP/

SSOP/

TSSOP

SO/

SSOP/

TSSOP

TQFN-

EP

NAME

FUNCTION

14

1

19

1

—

22

EN

Receiver Enable Control. Drive low for normal

operation. Drive high to force the receiver outputs

(R_OUT) into a high-impedance state.

16

2

1

2

28

C1+

Positive terminal of the voltage doubler Charge-Pump

Capacitor

15

3

20

3

27

V+

+5.5V generated by the charge pump

1

4

2

4

24

23

C1-

Negative terminal of the voltage doubler Charge-Pump

Capacitor

2

5

3

5

1

29

C2+

Positive terminal of inverting Charge-Pump Capacitor

3

6

4

6

2

30

C2-

Negative terminal of inverting Charge-Pump Capacitor

4

7

5

7

3

31

V-

-5.5V generated by the charge pump

5

8

7, 14

9, 16

4-8

1-5

R_IN

RS-232 Receiver Inputs

6

9

8, 13

10, 15

15-19

13, 14,

15, 17,

18

R_OUT

TTL/CMOS Receiver Outputs

7

10

9

11

21

—

INVALID

Output of the Valid Signal Detector.

INVALID is enabled

high if a valid RS-232 level is present on any receiver

input.

8

11

10, 11

12, 13

12, 13,

14

10, 11,

12

T_IN

TTL/CMOS Transmitter Inputs

9

12

14

23

—

FORCEON

Drive high to override automatic circuitry keeping

transmitters and charge pump on (

FORCEOFF must be

high) (Table 1).

10

13

6, 15

8, 17

9, 10,

11

6, 7, 8

T_OUT

RS-232 Transmitter Outputs

—

20

19

R2OUTB

TTL/CMOS Noninverting Complementary Receiver

Output. Always active.

11

14

16

18

25

24

GND

Ground

12

15

17

19

26

VCC

+3.0V to +5.5V Supply Voltage

13

16

18

20

22

—

FORCEOF

F

Force-Off Input, active low. Drive low to shut down

transmitters, receivers (MAX3243E, except R2OUTB),

and on-board charge pump. This overrides all

automatic circuitry and FORCEON (Table 1).

—

21

SHDN

Shutdown Control, Active Low

6

Maxim Integrated

MAX3221E/MAX3223E/MAX3243E

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