Max232

MAX232, MAX232I
DUAL EIA 232 DRIVERS/RECEIVERS
SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004

D Meets or Exceeds TIA/EIA-232-F and ITU
D
D
D
D
D
D
D
D

MAX232 . . . D, DW, N, OR NS PACKAGE
MAX232I . . . D, DW, OR N PACKAGE
(TOP VIEW)

Recommendation V.28
Operates From a Single 5-V Power Supply
With 1.0-mF Charge-Pump Capacitors
Operates Up To 120 kbit/s
Two Drivers and TwoReceivers
±30-V Input Levels
Low Supply Current . . . 8 mA Typical
ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model (A114-A)
Upgrade With Improved ESD (15-kV HBM)
and 0.1-mF Charge-Pump Capacitors is
Available With the MAX202
Applications
− TIA/EIA-232-F, Battery-Powered Systems,
Terminals, Modems, and Computers

C1+
VS+
C1−
C2+
C2−
VS−
T2OUT
R2IN

1

16

2

153

14

4

13

5

12

6

11

7

10

8

9

VCC
GND
T1OUT
R1IN
R1OUT
T1IN
T2IN
R2OUT

description/ordering information
The MAX232 is a dual driver/receiver that includes a capacitive voltage generator to supply TIA/EIA-232-F
voltage levels from a single 5-V supply. Each receiver converts TIA/EIA-232-F inputs to 5-V TTL/CMOS levels.
These receivers have a typicalthreshold of 1.3 V, a typical hysteresis of 0.5 V, and can accept ±30-V inputs.
Each driver converts TTL/CMOS input levels into TIA/EIA-232-F levels. The driver, receiver, and
voltage-generator functions are available as cells in the Texas Instruments LinASIC library.
ORDERING INFORMATION
ORDERABLE
PART NUMBER

PACKAGE†

TA
PDIP (N)

TOP-SIDE
MARKING

Tube of 25

MAX232N

Tubeof 40

MAX232D

Reel of 2500

MAX232DR

Tube of 40

MAX232DW

Reel of 2000

MAX232DWR

SOP (NS)

Reel of 2000

MAX232NSR

MAX232

PDIP (N)

Tube of 25

MAX232IN

MAX232IN

Tube of 40

MAX232ID

Reel of 2500

MAX232IDR

Tube of 40

MAX232IDW

Reel of 2000

MAX232IDWR

SOIC (D)
0°C to 70°C
SOIC (DW)

−40°C to 85°C

SOIC (D)
SOIC (DW)

MAX232NMAX232
MAX232

MAX232I
MAX232I

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/sc/package.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of thisdata sheet.
LinASIC is a trademark of Texas Instruments.
Copyright  2004, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

1MAX232, MAX232I
DUAL EIA 232 DRIVERS/RECEIVERS
SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004

Function Tables
EACH DRIVER
INPUT
TIN

OUTPUT
TOUT

L

H

H

L

H = high level, L = low
level
EACH RECEIVER
INPUT
RIN

OUTPUT
ROUT

L

H

H

L

H = high level, L = low
level

logic diagram (positive logic)
11

14

T1IN

T1OUT
10

7

T2IN

T2OUT
1213

R1OUT

R1IN
9

R2OUT

2

POST OFFICE BOX 655303

8
R2IN

• DALLAS, TEXAS 75265

MAX232, MAX232I
DUAL EIA 232 DRIVERS/RECEIVERS
SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Input supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . −0.3 V to 6 V
Positive output supply voltage range, VS+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC − 0.3 V to 15 V
Negative output supply voltage range, VS− . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to −15 V
Input voltage range, VI: Driver . . . . . . . . . . . . . . . . . . . ....