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MAX232, MAX232I (Rev. L
SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004
Meets or Exceeds TIA/EIA-232-F and ITU
Recommendation V.28
MAX232 . . . D, DW, N, OR NS PACKAGE
MAX232I . . . D, DW, OR N PACKAGE
(TOP VIEW)
Operates From a Single 5-V Power Supply
With 1.0-
F Charge-Pump Capacitors
C1+
V S+
C1−
C2+
C2−
V S−
T2OUT
R2IN
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V CC
GND
T1OUT
R1IN
R1OUT
T1IN
T2IN
R2OUT
Operates Up To 120 kbit/s
Two Drivers and Two Receivers
±
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-
Applications
− TIA/EIA-232-F, Battery-Powered Systems,
Terminals, Modems, and Computers
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 typical threshold of 1.3 V, a typical hysteresis of 0.5 V, and can accept
±
library.
ORDERING INFORMATION
T A
PACKAGE †
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP (N)
Tube of 25
MAX232N
MAX232N
SOIC (D)
Tube of 40
MAX232D
MAX232
Reel of 2500
MAX232DR
0 ° C to 70 ° C
Tube of 40
MAX232DW
SOIC (DW)
MAX232
Reel of 2000
MAX232DWR
SOP (NS)
Reel of 2000
MAX232NSR
MAX232
PDIP (N)
Tube of 25
MAX232IN
MAX232IN
SOIC (D)
Tube of 40
MAX232ID
MAX232I
−40 ° C to 85 ° C
Reel of 2500
MAX232IDR
−40 C to 85 C
SOIC (DW)
Tube of 40
MAX232IDW
MAX232I
Reel of 2000
MAX232IDWR
† 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 this data sheet.
LinASIC is a trademark of Texas Instruments.
Copyright
2004, Texas Instruments Incorporated
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
1
F Charge-Pump Capacitors is
Available With the MAX202
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
SOIC (D)
MAX232
0 ° C to 70 ° C
SOIC (DW)
MAX232
SOIC (D)
MAX232I
SOIC (DW)
MAX232I
274677575.007.png 274677575.008.png 274677575.009.png 274677575.010.png
SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004
Function Tables
OUTPUT
TOUT
L H
H L
H = high level, L = low
level
OUTPUT
ROUT
L H
H L
H = high level, L = low
level
logic diagram (positive logic)
T1IN
11
14
T1OUT
T2IN
10
7
T2OUT
R1OUT
12
13
R1IN
R2OUT
9
8
R2IN
2
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DALLAS, TEXAS 75265
EACH DRIVER
INPUT
TIN
EACH RECEIVER
INPUT
RIN
274677575.001.png
SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004
absolute maximum ratings over operating free-air temperature range (unless otherwise noted) †
Input supply voltage range, V CC (see Note 1)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−0.3 V to 6 V
Positive output supply voltage range, V S+
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V CC − 0.3 V to 15 V
Negative output supply voltage range, V S−
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−0.3 V to −15 V
Input voltage range, V I : Driver
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Receiver
−0.3 V to V CC + 0.3 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, V O : T1OUT, T2OUT
±
30 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V S− − 0.3 V to V S+ + 0.3 V
R1OUT, R2OUT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−0.3 V to V CC + 0.3 V
Short-circuit duration: T1OUT, T2OUT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unlimited
Package thermal impedance,
θ JA (see Notes 2 and 3): D package
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
DW package
73
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . .
57
°
C/W
N package
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
67
°
C/W
NS package
. . . . . . . . . . . . . . . . . . . . . . . . . . .
64
°
C/W
Operating virtual junction temperature, T J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
150
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltages are with respect to network GND.
2. Maximum power dissipation is a function of T J (max), θ JA , and T A . The maximum allowable power dissipation at any allowable
ambient temperature is P D = (T J (max) − T A )/ θ JA . Operating at the absolute maximum T J of 150 ° C can affect reliability.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
Storage temperature range, T stg
−65
°
C to 150
°
C
recommended operating conditions
MIN NOM MAX UNIT
V CC
Supply voltage
4.5
5
5.5
V
V IH
High-level input voltage (T1IN,T2IN)
2
V
V IL
Low-level input voltage (T1IN, T2IN)
0.8
V
R1IN, R2IN
Receiver input voltage
± 30
V
MAX232
0
70
T A
Operating free-air temperature
° C
MAX232I
−40
85
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Note 4 and Figure 4)
PARAMETER
TEST CONDITIONS
MIN TYP ‡ MAX UNIT
I CC Supply current
V CC = 5.5 V,
T A = 25
All outputs open,
8
10
mA
°
C
‡ All typical values are at V CC = 5 V and T A = 25 ° C.
NOTE 4: Test conditions are C1−C4 = 1 µ F at V CC = 5 V ± 0.5 V.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
3
T A
Operating free-air temperature
° C
274677575.002.png
SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004
DRIVER SECTION
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature range (see Note 4)
PARAMETER
TEST CONDITIONS
MIN TYP † MAX UNIT
V OH High-level output voltage
T1OUT, T2OUT
R L = 3 k Ω to GND
5
7
V
V OL Low-level output voltage ‡
T1OUT, T2OUT
R L = 3 k
Ω
to GND
−7
−5
V
r o
Output resistance
T1OUT, T2OUT
V S+ = V S− = 0,
V O = ± 2 V
300
Ω
I OS § Short-circuit output current
T1OUT, T2OUT
V CC = 5.5 V,
V O = 0
±
10
mA
I IS
Short-circuit input current
T1IN, T2IN
V I = 0
200
µ A
† All typical values are at V CC = 5 V, T A = 25 ° C.
‡ The algebraic convention, in which the least-positive (most negative) value is designated minimum, is used in this data sheet for logic voltage
levels only.
§ Not more than one output should be shorted at a time.
NOTE 4: Test conditions are C1−C4 = 1 µ F at V CC = 5 V ± 0.5 V.
switching characteristics, V CC = 5 V, T A = 25
°
C (see Note 4)
PARAMETER
TEST CONDITIONS
MIN
TYP MAX UNIT
SR
Driver slew rate
R L = 3 k Ω to 7 k Ω ,
See Figure 2
30
V
/µ
s
SR(t)
Driver transition region slew rate
See Figure 3
3
V /µ s
Data rate
One TOUT switching
120
kbit/s
NOTE 4: Test conditions are C1−C4 = 1
F at V CC = 5 V
±
0.5 V.
RECEIVER SECTION
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature range (see Note 4)
PARAMETER
TEST CONDITIONS
MIN TYP † MAX UNIT
V OH High-level output voltage
R1OUT, R2OUT I OH = −1 mA
3.5
V
V OL Low-level output voltage ‡
R1OUT, R2OUT I OL = 3.2 mA
0.4
V
V IT+
Receiver positive-going input
threshold voltage
R1IN, R2IN
V CC = 5 V,
T A = 25 ° C
1.7
2.4
V
V IT−
Receiver negative-going input
threshold voltage
R1IN, R2IN
V CC = 5 V,
T A = 25 ° C
0.8
1.2
V
V hys Input hysteresis voltage
R1IN, R2IN
V CC = 5 V
0.2
0.5
1
V
r i
Receiver input resistance
R1IN, R2IN
V CC = 5,
T A = 25
°
C
3
5
7
k
Ω
C.
‡ The algebraic convention, in which the least-positive (most negative) value is designated minimum, is used in this data sheet for logic voltage
levels only.
NOTE 4: Test conditions are C1−C4 = 1 µ F at V CC = 5 V ± 0.5 V.
°
switching characteristics, V CC = 5 V, T A = 25
°
C (see Note 4 and Figure 1)
PARAMETER
TYP UNIT
t PLH(R) Receiver propagation delay time, low- to high-level output
500
ns
t PHL(R) Receiver propagation delay time, high- to low-level output
500
ns
NOTE 4: Test conditions are C1−C4 = 1 µ F at V CC = 5 V ± 0.5 V.
4
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
µ
† All typical values are at V CC = 5 V, T A = 25
274677575.003.png 274677575.004.png
SLLS047L − FEBRUARY 1989 − REVISED MARCH 2004
PARAMETER MEASUREMENT INFORMATION
V CC
R1IN
or
R2IN
R1OUT
or
R2OUT
R L = 1.3 k Ω
Pulse
Generator
(see Note A)
See Note C
C L = 50 pF
(see Note B)
TEST CIRCUIT
≤
10 ns
≤
10 ns
90%
50%
90%
50%
3 V
Input
10%
10%
0 V
500 ns
t PLH
t PHL
V OH
Output
1.5 V
1.5 V
V OL
WAVEFORMS
NOTES: A. The pulse generator has the following characteristics: Z O = 50 Ω , duty cycle ≤ 50%.
B. C L includes probe and jig capacitance.
C. All diodes are 1N3064 or equivalent.
Figure 1. Receiver Test Circuit and Waveforms for t PHL and t PLH Measurements
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
5
274677575.005.png 274677575.006.png

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