MAX3222EEUP(2003) Просмотр технического описания (PDF) - Maxim Integrated

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MAX3222EEUP
(Rev.:2003)

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers

Maxim Integrated 

±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V,

Up to 1Mbps, True RS-232 Transceivers

Pin Description

MAX3222E

MAX3232E

SO/DIP

TSSOP/ SO/DIP/

SSOP SSOP

TSSOP

PIN

MAX3241E

MAX3237E SSOP/SO QFN

MAX3246E

NAME

FUNCTION

1

1

—

—

13*

2

2

1

2

28

23

22

B3

28

28

F3

EN

Receiver Enable. Active low.

Positive Terminal of Voltage-

C1+ Doubler Charge-Pump

Capacitor

3

3

2

3

27

27

27

F1

V+

+5.5V Generated by the

Charge Pump

Negative Terminal of Voltage-

4

4

3

4

25

24

23

F4

C1- Doubler Charge-Pump

Capacitor

5

5

4

5

1

1

29

E1

C2+ Positive Terminal of Inverting

Charge-Pump Capacitor

6

6

5

6

3

2

30

D1

C2-

Negative Terminal of Inverting

Charge-Pump Capacitor

7

7

6

7

4

3

31

C1

V-

-5.5V Generated by the

Charge Pump

8, 15 8, 17 7, 14 8, 17

5, 6, 7,

10, 12

9, 10,

11

6, 7,

8

F6, E6, D6

T_OUT

RS-232 Transmitter Outputs

9, 14 9, 16 8, 13 9, 16 8, 9, 11

4–8

1–5

A4, A5,

A6, B6, C6

R_IN

RS-232 Receiver Inputs

10, 13 10, 15 9, 12 12, 15

11, 12 12, 13 10, 11 13, 14

16

18

15

18

17

19

16

19

18

20

—

—

18, 20,

21

17*, 19*,

22*, 23*,

24*

2

26

14*

15–19

13, 14,

15, 17,

18

C2, B1,

A1, A2, A3

12, 13,

14

10, 11, E3, E2, D2

12

25

24

F5

26

26

F2

22

21

B2

R_OUT

T_IN

GND

VCC

SHDN

TTL/CMOS Receiver Outputs

TTL/CMOS Transmitter Inputs

Ground

+3.0V to +5.5V Supply Voltage

Shutdown Control. Active low.

—

11, 14

—

1, 10, 11,

20

—

C3, D3, B4,

No Connection. For

—

9, 16, C4, D4, E4,

25, 32 B5, C5, D5,

N.C.

MAX3246E, these locations

are not populated with solder

E5

bumps.

—

—

—

—

15*

—

—

MegaBaud Control Input.

—

MBAUD Connect to GND for normal

operation; connect to VCC for

1Mbps transmission rates.

—

—

—

—

Noninverting Complementary

16

20, 21 19, 20

—

R_OUTB Receiver Outputs. Always

active.

*These pins have an active positive feedback resistor internal to the MAX3237E, allowing unused inputs to be left unconnected.

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