5V Dual channel RS-232 Drivers/Receivers
FEATURES
Output voltage levels are compatible with input levels
of CMOS and TTL integrated circuits
Meets All EIA/TIA-232E and V.28/V.24 Specifications
Supply voltage range from 4.5 to 5.5V
Low input current: 1.0µA at 25°C
Output current 24mA
Tolerable value of static potential not less than 2kV
Available in DIP-16 Package
MAX232
DIP-16
APPLICATIONS
Portable Computers
Battery-Powered RS-232 Systems
Interface Translation
Low-Power Modems
Terminals
ORDERING INFORMATION
Device
MAX232EN
Package
DIP-16
* Refer to the ordering information for the details.
DESCRIPTION
The MAX232 is a dual driver/receiver of RS-232 standard with a single supply voltage and bipolar output voltage
of the transmitter formed by a built-In voltage multiplying generator on four 1.0µF external capacitors, designed
for use in state-of-the-art high performance computing systems, high-speed electronic devices with high reliability
of information exchange between remote objects.
Input voltage levels are compatible with standard CMOS and TTL levels.
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Transmitter High Output Voltage
Transmitter Low Output Voltage
Transmitter Input Voltage
Receiver Input Voltage
Voltage Applied to Transmitter Output
Voltage Applied to Receiver Output
Storage Temperature Range
SYMBOL
V
CC
V
+
V
-
V
TIN
V
RIN
V
TOUT
V
ROUT
T
STG
MIN.
-0.3
V
CC
-0.3
-14
-0.3
-30
V
-
-0.3
-0.3
-65
MAX.
6.0
14
0.3
V
+
+0.3
30
V
+
+0.3
V
CC
+0.3
150
UNIT
V
V
V
V
V
V
V
°C
Sep. 2019 – R1.0
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HTC
5V Dual channel RS-232 Drivers/Receivers
RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply Voltage
Transmitter Input Voltage
Receiver Input Voltage
Output Current of Transmitter Short Circuit
Ambient Temperature Range
SYMBOL
V
CC
V
TIN
V
RIN
I
SC
T
A
MIN.
4.5
0
-30
-
-40
MAX.
5.5
V
CC
30
±60
+85
MAX232
UNIT
V
V
V
mA
°C
ORDERING INFORMATION
Package
DIP-16
Oder No.
MAX232EN
Package Marking
MAX232E
Compliance
RoHS, Green
Supplied As
Tube
MAX 232
Package Type
Temperature
Root Name
Product Code
N : DIP-16
E : -40°C ~ 85°C
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5V Dual channel RS-232 Drivers/Receivers
PIN CONFIGURATION
MAX232
C1+
V+
C1-
C2+
C2-
V-
T2OUT
R2IN
01
02
03
04
05
06
07
08
16
15
14
13
12
11
10
09
VCC
GND
T1OUT
R1IN
R1OUT
T1IN
T2IN
R2OUT
DIP-16 PKG
PIN DESCRIPTION
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
C1+
V+
C1-
C2+
C2-
V-
T2OUT
R2IN
R2OUT
T2IN
T1IN
R1OUT
R1IN
T1OUT
GND
VCC
Pin Description
Terminal for Positive Charge-Pump C1 Capacitor
Positive Voltage Generated by the Charge-Pump
Terminal for Negative Charge-Pump C1 Capacitor
Terminal for Positive Charge-Pump C2 Capacitor
Terminal for Negative Charge-Pump C2 Capacitor
Negative Voltage Generated by the Charge-Pump
RS-232 Driver Output (Levels RS-232)
RS-232 Receiver Input (Levels RS-232)
RS-232 Receiver Output (Levels TTL/CMOS)
RS-232 Driver Input (Levels TTL/CMOS)
RS-232 Driver Input (Levels TTL/CMOS)
RS-232 Receiver Output (Levels TTL/CMOS)
RS-232 Receiver Input (Levels RS-232)
RS-232 Driver Output (Levels RS-232)
Ground
Supply Voltage Input
Sep. 2019 – R1.0
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5V Dual channel RS-232 Drivers/Receivers
TYPICAL APPLICATION CIRCUIT
1.0µF
5V Supply
1.0µF
MAX232
16
1
1.0µF
C1+
VCC
V+
C1-
C2+
V-
2
3
4
6
1.0µF
1.0µF
5
C2-
11
TTL/CMOS
Inputs
10
T1IN
T1OUT
14
RS-232
Outputs
T2IN
T2OUT
7
12
TTL/CMOS
Outputs
9
R1OUT
5K
R2OUT
5K
R1IN
13
RS-232
Inputs
R2IN
8
GND
15
FUNCTION TABLE
INPUT
(RIN, TIN)
L (Low Level)
H (High Level)
OUTPUT
(ROUT, TOUT)
H (High Level)
L (Low Level)
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5V Dual channel RS-232 Drivers/Receivers
ELECTRICAL CHARACTERISTICS
MAX232
(Limits in standard typeface are for T
A
=25°C, and the limits in boldface type apply over full operating temperature range.)
PARAMETER
Supply Current
Receiver Parameters
Hysteresis Voltage
On (Operation) Voltage
Off (Dropout) Voltage
Output Low Voltage
Output High Voltage
Input Resistance
Transmitter Parameters
Output Low Voltage
Output High Voltage
Input Low Current
Input High Current
Speed Of Output Front Charge
Output Resistance
SYMBOL
I
CC
TEST CONDITIONS
V
CC
= 5.5V
V
IL
= 0V
MIN.
-
TYP.
-
MAX.
10.0
14.0
UNIT
mA
V
h
V
on
V
off
V
OL
V
OH
R
I
V
CC
= 5.0V
V
O
≤ 0.1V, I
OL
≤ 20µA
V
O
≥ V
CC
- 0.1V
I
OH
≤ -20µA
I
L
= 3.2mA, V
CC
= 4.5V,
V
IH
= 2.4V
I
OH
= -1.0mA, V
CC
= 4.5V,
V
IL
= 0.8V
V
CC
= 5.0V
0.2
0.2
-
0.8
0.9
-
3.6
3.5
3.0
3.0
-
-
-
-
-
-
0.9
1.0
2.4
2.3
-
0.3
0.4
-
7.0
7.0
V
V
V
V
V
kΩ
V
OL
V
OH
I
IL
I
IH
SR
R
O
V
CC
= 4.5V, V
IH
= 2.0V,
R
L
= 3.0kΩ
V
CC
= 4.5V, V
IL
= 0.8V,
R
L
= 3.0kΩ
V
CC
= 5.5V, V
IL
= 0V
V
CC
= 5.5V, V
IH
= V
CC
V
CC
= 5.0V, C
L
= 50 - 1000pF,
R
L
= 3.0 - 7.0kΩ
V
CC
= V+ = V- = 0V
V
O
= ±2V
V
CC
= 5.5V
V
O
= 0V
V
I
= V
CC
V
I
= 0
-
5.2
5.0
-
-
3.0
2.7
350
300
-
-
140
120
-
-
-
-
-
-
-
-
-5.2
-5.0
-
-1.0
-10.0
1.0
10.0
30
27
-
-50
-60
50
60
-
V
V
µA
µA
V/µs
Ω
Short Circuit Output Current
I
SC
mA
Speed Of Information
Transmission
Dynamic Parameters
Signal Propagation Delay Time
When Switching On (Off)
Signal Propagation Delay Time
When Switching On (Off)
ST
V
CC
= 4.5V, C
L
= 1000pF,
R
L
= 3.0kΩ, t
W
= 7µs (for
extreme, t
W
= 8µs)
-
kbit/s
t
PHLR
(t
PLHR
)
t
PHLT
(t
PLHT
)
V
CC
= 4.5V, C
L
= 150pF,
V
IL
= 0V, V
IH
= 3.0V,
t
LH
= t
HL
≤ 10ns
V
CC
= 4.5V, C
L
= 2500pF,
V
IL
= 0V, V
IH
= 3.0V,
R
L
= 3kΩ, t
LH
= t
HL
≤ 10ns
-
-
9.7
10.0
5.0
6.0
µs
-
-
µs
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