TI MAX232

MAX232, MAX232I
DUAL EIA-232 DRIVER/RECEIVER
SLLS047G – FEBRUARY 1989 – REVISED AUGUST 1998
D
D
D
D
D
D
D
D
D
D
Operates With Single 5-V Power Supply
LinBiCMOS Process Technology
Two Drivers and Two Receivers
± 30-V Input Levels
Low Supply Current . . . 8 mA Typical
Meets or Exceeds TIA/EIA-232-F and ITU
Recommendation V.28
Designed to be Interchangeable With
Maxim MAX232
Applications
TIA/EIA-232-F
Battery-Powered Systems
Terminals
Modems
Computers
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015
Package Options Include Plastic
Small-Outline (D, DW) Packages and
Standard Plastic (N) DIPs
D, DW, OR N PACKAGE
(TOP VIEW)
C1+
VS+
C1–
C2+
C2–
VS–
T2OUT
R2IN
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
VCC
GND
T1OUT
R1IN
R1OUT
T1IN
T2IN
R2OUT
logic symbol†
VCC
16
C1+
C1 –
C2 +
C2 –
T1IN
description
The MAX232 device is a dual driver/receiver that
includes a capacitive voltage generator to supply
EIA-232 voltage levels from a single 5-V supply.
Each receiver converts EIA-232 inputs to 5-V
TTL/CMOS levels. These receivers have a typical
threshold of 1.3 V and a typical hysteresis of 0.5 V,
and can accept ± 30-V inputs. Each driver
converts TTL/CMOS input levels into EIA-232
levels. The driver, receiver, and voltage-generator
functions are available as cells in the Texas
Instruments LinASIC library.
1
T2IN
R1OUT
R2OUT
1
3
4
5
C1+
VCC
C1–
2VCC – 1.5 V
C2+
–2VCC + 1.5 V
2 V
S+
6
VS –
C2–
11
14
10
7
12
13
T1OUT
T2OUT
R1IN
8
9
0V
R2IN
15
GND
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC
Publication 617-12.
The MAX232 is characterized for operation from
0°C to 70°C. The MAX232I is characterized for
operation from – 40°C to 85°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
TA
0°C to 70°C
SMALL
OUTLINE
(D)
MAX232D‡
SMALL
OUTLINE
(DW)
MAX232DW‡
MAX232IDW‡
MAX232ID‡
PLASTIC DIP
(N)
MAX232N
– 40°C to 85°C
MAX232IN
‡ This device is available taped and reeled by adding an R to the part number (i.e., MAX232DR).
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 and LinBiCMOS are trademarks of Texas Instruments Incorporated.
Copyright  1998, 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 DRIVER/RECEIVER
SLLS047G – FEBRUARY 1989 – REVISED AUGUST 1998
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to VCC + 0.3 V
Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 30 V
Output voltage range, VO: T1OUT, T2OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VS – – 0.3 V to VS+ + 0.3 V
R1OUT, R2OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to VCC + 0.3 V
Short-circuit duration: T1OUT, T2OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unlimited
Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113°C/W
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°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.
NOTE 1: All voltage values are with respect to network ground terminal.
2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace length
of zero.
recommended operating conditions
Supply voltage, VCC
High-level input voltage, VIH (T1IN,T2IN)
MIN
NOM
MAX
4.5
5
5.5
2
UNIT
V
V
Low-level input voltage, VIL (T1IN, T2IN)
0.8
V
Receiver input voltage, R1IN, R2IN
±30
V
Operating free-air
free air temperature,T
temperature TA
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
MAX232
0
70
MAX232I
–40
85
°C
MAX232, MAX232I
DUAL EIA-232 DRIVER/RECEIVER
SLLS047G – FEBRUARY 1989 – REVISED AUGUST 1998
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP†
7
T1OUT, T2OUT
RL = 3 kΩ to GND
5
R1OUT, R2OUT
3.5
T1OUT, T2OUT
IOH = – 1 mA
RL = 3 kΩ to GND
R1OUT, R2OUT
IOL = 3.2 mA
Receiver positive-going input
threshold voltage
R1IN, R2IN
VCC = 5 V,
TA = 25°C
Receiver negative-going input
threshold voltage
R1IN, R2IN
VCC = 5 V,
TA = 25°C
Vhys
ri
Input hysteresis voltage
R1IN, R2IN
Receiver input resistance
R1IN, R2IN
VCC = 5 V
VCC = 5,
ro
Output resistance
T1OUT, T2OUT
IOS§
IIS
Short-circuit output current
T1OUT, T2OUT
Short-circuit input current
T1IN, T2IN
VOH
High-level out
output
ut voltage
VOL
Low level output voltage‡
Low-level
VIT+
VIT–
ICC
Supply current
VS+ = VS – = 0,
VCC = 5.5 V,
VI = 0
VCC = 5.5 V,
TA = 25°C
–7
MAX
V
–5
0.4
TA = 25°C
VO = ± 2 V
1.7
UNIT
2.4
V
V
0.8
1.2
V
0.2
0.5
1
V
3
5
7
kΩ
Ω
300
±10
VO = 0
All outputs open,
8
mA
200
µA
10
mA
† All typical values are at VCC = 5 V, TA = 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.
switching characteristics, VCC = 5 V, TA = 25°C
PARAMETER
tPLH(R)
tPHL(R)
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Receiver propagation delay time, low- to high-level output
See Figure 1
500
ns
Receiver propagation delay time, high- to low-level output
See Figure 1
500
ns
SR
Driver slew rate
RL = 3 kΩ to 7 kΩ,
See Figure 2
SR(tr)
Driver transition region slew rate
See Figure 3
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
30
3
V/µs
V/µs
3
MAX232, MAX232I
DUAL EIA-232 DRIVER/RECEIVER
SLLS047G – FEBRUARY 1989 – REVISED AUGUST 1998
PARAMETER MEASUREMENT INFORMATION
VCC
Pulse
Generator
(see Note A)
RL = 1.3 kΩ
R1OUT
or
R2OUT
R1IN
or
R2IN
See Note C
CL = 50 pF
(see Note B)
TEST CIRCUIT
≤ 10 ns
≤ 10 ns
Input
10%
90%
50%
90%
50%
3V
10%
0V
500 ns
tPLH
tPHL
VOH
Output
1.5 V
1.5 V
VOL
WAVEFORMS
NOTES: A. The pulse generator has the following characteristics: ZO = 50 Ω, duty cycle ≤ 50%.
B. CL includes probe and jig capacitance.
C. All diodes are 1N3064 or equivalent.
Figure 1. Receiver Test Circuit and Waveforms for tPHL and tPLH Measurements
4
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
MAX232, MAX232I
DUAL EIA-232 DRIVER/RECEIVER
SLLS047G – FEBRUARY 1989 – REVISED AUGUST 1998
PARAMETER MEASUREMENT INFORMATION
T1IN or T2IN
Pulse
Generator
(see Note A)
T1OUT or T2OUT
EIA-232 Output
CL = 10 pF
(see Note B)
RL
TEST CIRCUIT
≤ 10 ns
≤ 10 ns
90%
50%
Input
10%
3V
90%
50%
10%
0V
5 µs
tPLH
tPHL
90%
Output
90%
10%
10%
VOL
tTLH
tTHL
SR
+
VOH
0.8 (V
t
–V
OH
)
OL
0.8 (V
or
–V
)
OL OH
t
TLH
THL
WAVEFORMS
NOTES: A. The pulse generator has the following characteristics: ZO = 50 Ω, duty cycle ≤ 50%.
B. CL includes probe and jig capacitance.
Figure 2. Driver Test Circuit and Waveforms for tPHL and tPLH Measurements (5-µs input)
Pulse
Generator
(see Note A)
EIA-232 Output
3 kΩ
CL = 2.5 nF
TEST CIRCUIT
≤ 10 ns
≤ 10 ns
Input
90%
1.5 V
10%
90%
1.5 V
10%
20 µs
tTLH
tTHL
Output
3V
3V
–3 V
–3 V
SR
+t
THL
6 V
or t
VOH
VOL
TLH
WAVEFORMS
NOTE A:
The pulse generator has the following characteristics: ZO = 50 Ω, duty cycle ≤ 50%.
Figure 3. Test Circuit and Waveforms for tTHL and tTLH Measurements (20-µs input)
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
MAX232, MAX232I
DUAL EIA-232 DRIVER/RECEIVER
SLLS047G – FEBRUARY 1989 – REVISED AUGUST 1998
APPLICATION INFORMATION
5V
16
1 µF
C1+
3
From CMOS or TTL
To CMOS or TTL
2
VS –
C2+
5
6
+
C2–
11
14
10
7
12
13
9
8
0V
15
GND
Figure 4. Typical Operating Circuit
6
8.5 V
VS +
C1–
4
1 µF
1 µF
VCC
1
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
– 8.5 V
1 µF
EIA-232 Output
EIA-232 Output
EIA-232 Input
EIA-232 Input
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Copyright  1998, Texas Instruments Incorporated