a
FEATURES
Single 5 V Power Supply
Meets All EIA-232-E and V.28 Specifications
120 kB/s Data Rate
On-Board DC-DC Converters
9 V Output Swing with +5 V Supply
Small 1 F Capacitors
Low Power Shutdown
≤1
A
Receivers Active in Shutdown (ADM223)
ESD > 2 kV
30 V Receiver Input Levels
Latch-Up FREE
Plug-In Upgrade for MAX223/230-241
Plug-In Upgrade for AD230–AD241
APPLICATIONS
Computers
Peripherals
Modems
Printers
Instruments
GENERAL DESCRIPTION
+5 V Powered
CMOS RS-232 Drivers/Receivers
ADM223/ADM230L–ADM241L
ADM232L TYPICAL OPERATING CIRCUIT
+5V INPUT
1 C1+
3 C1–
+5V TO +10V
VOLTAGE
DOUBLER
VCC 16
V+ 2
V– 6
1µF
6.3V
1µF
16V
1µF
6.3V
1µF
6.3V
4 C2+ +10V TO –10V
VOLTAGE
INVERTER
5 C2–
11
10
12
9
GND
15
T1
T2
R1
R2
1µF
16V
T1OUT
T2OUT
R1IN
R2IN
TTL/CMOS
INPUTS*
T1IN
T2IN
14
7
13
8
RS-232
OUTPUTS
TTL/CMOS
OUTPUTS
R1OUT
R2OUT
RS-232
INPUTS**
ADM232L
*INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT
**INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT
The ADM2xx family of line drivers/receivers is intended for all
EIA-232-E and V.28 communications interfaces, especially in
applications where
±
12 V is not available. The ADM223,
ADM230L, ADM235L, ADM236L and ADM241L feature a
low power shutdown mode that reduces power dissipation to
less than 5
µW,
making them ideally suited for battery powered
equipment. Two receivers remain enabled during shutdown on
the ADM223. The ADM233L and ADM235L do not require
any external components and are particularly useful in applica-
tions where printed circuit board space is critical.
All members of the ADM230L family, except the ADM231L
and the ADM239L, include two internal charge pump voltage
converters that allow operation from a single +5 V supply.
These converters convert the +5 V input power to the
±
10 V
required for RS-232 output levels. The ADM231L and
ADM239L are designed to operate from +5 V and +12 V sup-
plies. An internal +12 V to –12 V charge pump voltage con-
verter generates the –12 V supply.
The ADM2xxL is an enhanced upgrade for the AD2xx family
featuring lower power consumption, faster slew rate and opera-
tion with smaller (1
µF)
capacitors.
Table I. Selection Table
Part
Number
ADM223
ADM230L
ADM231L
ADM232L
ADM233L
ADM234L
ADM235L
ADM236L
ADM237L
ADM238L
ADM239L
ADM241L
REV. 0
Power
Supply Voltage
+5 V
+5 V
+5 V & +7.5 V to +13.2 V
+5 V
+5 V
+5 V
+5 V
+5 V
+5 V
+5 V
+5 V & +7.5 V to +13.2 V
+5 V
No. of
RS-232
Drivers
4
5
2
2
2
4
5
4
5
4
3
4
No. of
RS-232
Receivers
5
0
2
2
2
0
5
3
3
4
5
5
External
Capacitors
4
4
2
4
None
4
None
4
4
4
2
4
Low Power
Shutdown
(SD)
Yes (SD)
Yes
No
No
No
No
Yes
Yes
No
No
No
Yes
TTL
Three-State
EN
Yes (EN)
No
No
No
No
No
Yes
Yes
No
No
Yes
Yes
No. of
Pins
28
20
14
16
20
16
24
24
24
24
24
28
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
© Analog Devices, Inc., 1997
V
CC
= +5 V 10% (ADM223, 31L,
32L, 34L, 36L, 38L, 39L, 41L);
V
CC
= +5 V 5% (ADM230L, 33L, 35L, 37L); V+ = 7.5 V to 13.2 V (ADM231L & ADM239L); C1–C4 = 1.0 F Ceramic. All Specifications T
MIN
to
T
MAX
unless otherwise noted.)
ADM223/ADM230L–ADM241L–SPECIFICATIONS
Min
±
5
Typ
±
9
2
3.5
0.4
1.5
1
10
–30
0.8
0.2
3
3.5
0.05
250
50
0.5
25
5
300
±
10
30
1.2
1.7
0.5
5
Max Units
Volts
3.0
mA
6
mA
1
mA
4
mA
5
µA
0.8
V
V
25
µA
+30 V
V
2.4
V
1.0
V
7
kΩ
0.4
V
V
±
5
µA
ns
ns
µs
V/µs
V/µs
Ω
mA
Parameter
Output Voltage Swing
V
CC
Power Supply Current
V+ Power Supply Current
Shutdown Supply Current
Input Logic Threshold Low, V
INL
Input Logic Threshold High, V
INH
Logic Pull-Up Current
RS-232 Input Voltage Range
RS-232 Input Threshold Low
RS-232 Input Threshold High
RS-232 Input Hysteresis
RS-232 Input Resistance
TTL/CMOS Output Voltage Low, V
OL
TTL/CMOS Output Voltage High, V
OH
TTL/CMOS Output Leakage Current
Output Enable Time (T
EN
)
Output Disable Time (T
DIS
)
Propagation Delay
Instantaneous Slew Rate
1
Transition Region Slew Rate
Output Resistance
RS-232 Output Short Circuit Current
NOTE
1
Sample tested to ensure compliance.
Specifications subject to change without notice.
Test Conditions/Comments
All Transmitter Outputs Loaded with 3 kΩ to Ground
No Load, All T
INS
= V
CC
(Except ADM223)
No Load, All T
INS
= GND
ADM231L, ADM239L
No Load, V+ = 12 V ADM231L & ADM239L Only
T
IN
,
EN,
SD, EN,
SD
T
IN
,
EN,
SD, EN,
SD
T
IN
= 0 V
2.0
I
OUT
= –1.0 mA
EN
= V
CC
, 0 V
≤
R
OUT
≤
V
CC
ADM223, ADM235L, ADM236L, ADM239L, ADM241L
(Figure 25. C
L
= 150 pF)
ADM223, ADM235L, ADM236L, ADM239L, ADM241L
(Figure 25. R
L
= 1 kΩ)
RS-232 to TTL
C
L
= 10 pF, R
L
= 3-7 kΩ, T
A
= +25°C
R
L
= 3 kΩ, C
L
= 2500 pF
Measured from +3 V to –3 V or –3 V to +3 V
V
CC
= V+ = V– = 0 V, V
OUT
=
±
2 V
ABSOLUTE MAXIMUM RATINGS*
(T
A
= 25°C unless otherwise noted)
V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +6 V
V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . (V
CC
– 0.3 V) to +14 V
V– . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –14 V
Input Voltages
T
IN
. . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to (V
CC
+ 0.3 V)
R
IN
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
30 V
Output Voltages
T
OUT
. . . . . . . . . . . . . . . . . . (V+, + 0.3 V) to (V–, – 0.3 V)
R
OUT
. . . . . . . . . . . . . . . . . . . . . . . –0.3 V to (V
CC
+ 0.3 V)
Short Circuit Duration
T
OUT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Continuous
Power Dissipation
N-14 DIP (Derate 10 mW/°C above +70°C) . . . . . 800 mW
N-16 DIP (Derate 10.5 mW/°C above +70°C) . . . 840 mW
N-20 DIP (Derate 11 mW/°C above +70°C) . . . . . 890 mW
N-24 DIP (Derate 13.5 mW/°C above +70°C) . . 1000 mW
N-24A DIP (Derate 13.5 mW/°C above +70°C) . . 500 mW
R-16 SOIC (Derate 9 mW/°C above +70°C) . . . . . 760 mW
R-20 SOIC (Derate 9.5 mW/°C above +70°C) . . . 800 mW
R-24 SOIC (Derate 12 mW/°C above +70°C) . . . . 850 mW
R-28 SOIC (Derate 12.5 mW/°C above +70°C) . . 900 mW
RS-28 SSOP (Derate 10 mW/°C above +70°C) . . . 900 mW
Q-14 Cerdip (Derate 10 mW/°C above +70°C) . . . 720 mW
Q-16 Cerdip (Derate 10 mW/°C above +70°C) . . . 800 mW
Q-20 Cerdip (Derate 11.2 mW/°C above +70°C) . . . 890 mW
Q-24 Cerdip (Derate 12.5 mW/°C above +70°C) . . 1000 mW
D-24 Ceramic (Derate 20 mW/°C above +70°C) . . 1000 mW
Thermal Impedance,
θ
JA
N-14 DIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140°C/W
N-16 DIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135°C/W
N-20 DIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125°C/W
N-24 DIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120°C/W
N-24A DIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110°C/W
R-16 SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105°C/W
R-20 SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105°C/W
R-24 SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85°C/W
R-28 SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80°C/W
RS-28 SSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100°C/W
Q-14 Cerdip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105°C/W
Q-16 Cerdip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100°C/W
Q-20 Cerdip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100°C/W
Q-24 Cerdip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C/W
D-24 Ceramic . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50°C/W
Operating Temperature Range
Commercial (J Version) . . . . . . . . . . . . . . . . . . . 0 to +70°C
Industrial (A Version) . . . . . . . . . . . . . . . . –40°C to +85°C
Storage Temperature Range . . . . . . . . . . . –65°C to + 150°C
Lead Temperature, Soldering . . . . . . . . . . . . . . . . . . +300°C
Vapour Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . +215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . +220°C
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >2000 V
*This is a stress rating only and functional operation of the device at these or any
other conditions above those indicated in the operational sections of this specifi-
cation is not implied. Exposure to absolute maximum rating conditions for
extended periods of time may affect reliability.
–2–
REV. 0
ADM223/ADM230L–ADM241L
ORDERING GUIDE
Model
ADM223
ADM223AR
ADM223ARS
Temperature
Range
–40°C to +85°C
–40°C to +85°C
Package
Option*
R-28
RS-28
Model
ADM230L
ADM230LJN
ADM230LJR
ADM230LAN
ADM230LAR
ADM230LAQ
ADM233L
ADM233LJN
ADM233LAN
Temperature
Range
0°C to +70°C
0°C to +70°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
0°C to +70°C
–40°C to +85°C
Package
Option*
N-20
R-20
N-20
R-20
Q-20
N-20
N-20
Model
ADM231L
ADM231LJN
ADM231LJR
ADM231LAN
ADM231LAR
ADM231LAQ
ADM234L
ADM234LJN
ADM234LJR
ADM234LAN
ADM234LAR
ADM234LAQ
ADM237L
ADM237LJN
ADM237LJR
ADM237LAN
ADM237LAR
ADM237LAQ
ADM241L
ADM241LJR
ADM241LAR
ADM241LJRS
ADM241LARS
Temperature
Range
0°C to +70°C
0°C to +70°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
0°C to +70°C
0°C to +70°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
0°C to +70°C
0°C to +70°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
0°C to +70°C
–40°C to +85°C
0°C to +70°C
–40°C to +85°C
Package
Option*
N-14
R-16
N-14
R-16
Q-14
N-16
R-16
N-16
R-16
Q-16
N-24
R-24
N-24
R-24
Q-24
R-28
R-28
RS-28
RS-28
ADM232L
ADM232LJN
ADM232LJR
ADM232LAN
ADM232LAR
ADM232LAQ
0°C to +70°C
0°C to +70°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
N-16
R-16
N-16
R-16
Q-16
N-24A
N-24A
D-24
ADM235L
ADM235LJN 0°C to +70°C
ADM235LAN –40°C to +85°C
ADM235LAQ –40°C to +85°C
ADM236L
ADM236LJN
ADM236LJR
ADM236LAN
ADM236LAR
ADM236LAQ
ADM239L
ADM239LJN
ADM239LJR
ADM239LAN
ADM239LAR
ADM239LAQ
0°C to +70°C
0°C to +70°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
0°C to +70°C
0°C to +70°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
N-24
R-24
N-24
R-24
Q-24
N-24
R-24
N-24
R-24
Q-24
ADM238L
ADM238LJN
ADM238LJR
ADM238LAN
ADM238LAR
ADM238LAQ
0°C to +70°C
0°C to +70°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
N-24
R-24
N-24
R-24
Q-24
*D = Ceramic DIP; N = Plastic DIP; Q = Cerdip; R = Small Outline IC (SOIC); RS = Small Shrink Outline Package (SSOP).
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the ADM223/ADM230L–ADM241L features proprietary ESD protection circuitry, permanent
damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper
ESD precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
REV. 0
–3–
ADM223/ADM230L–ADM241L
+5V INPUT
T3
OUT
T1
OUT
T2
OUT
T2
IN
T1
IN
GND
V
CC
C1+
V+
C1–
1
2
3
4
5
6
7
8
9
10
NC = NO CONNECT
20 T4
OUT
19
T5
IN
1µF
6.3V
8
C1+
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
V
CC
7
V+ 9
1µF
6.3V
1µF
18 NC
17 SD
10 C1–
11 C2+
12 C2–
5
ADM230L
TOP VIEW
(Not to Scale)
16
15
14
13
12
11
T5
OUT
T4
IN
T3
IN
V–
C2–
C2+
TTL/CMOS
INPUTS
*
1µF
16V
V– 13
1µF
16V
T1
IN
T2
IN
T1
2
T1
OUT
T2
OUT
T3
OUT
T4
OUT
RS-232
OUTPUTS
4
T2
3
T3
IN
T4
IN
14
T3
1
15
T4
20
Figure 1. ADM230L DIP/SOIC Pin Configuration
T5
IN
NC
19
18
GND
6
T5
16
17
T5
OUT
SD
ADM230L
*
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT
DIP
Figure 2. ADM230L Typical Operating Circuit
C1+
C1–
V–
T2
OUT
R2
IN
R2
OUT
T2
IN
1
2
3
14
V+
13 V
CC
ADM231L
4
5
6
7
TOP VIEW
(Not to Scale)
12 GND
11
10
9
8
T1
OUT
R1
IN
R1
OUT
T1
IN
1µF
16V
2 C–
1 C+
13
V
CC
+12V TO –12V
VOLTAGE
CONVERTER
V+ 14
V– 3
+7.5V TO 13.2V
1µF
16V
+5V INPUT
1µF
SOIC
T1
IN
8
T1
11
C1+
C1–
V–
T2
OUT
R2
IN
R2
OUT
T2
IN
NC
1
2
3
4
5
6
7
8
NC = NO CONNECT
16
15
14
V+
V
CC
GND
T1
OUT
TTL/CMOS
INPUTS
*
T2
IN
7
T2
4
T1
OUT
T2
OUT
R1
IN
RS-232
OUTPUTS
R1
OUT
TTL/CMOS
OUTPUTS
R2
OUT
9
R1
10
ADM231L
TOP VIEW
(Not to Scale)
13
RS-232
INPUTS
**
6
GND
12
R2
5
R2
IN
12 R1
IN
11
10
9
R1
OUT
T1
IN
NC
ADM231L
*
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT
**INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT
Figure 4. ADM231L Typical Operating Circuit (DIP Pinout)
Figure 3. ADM231L DIP & SOIC Pin Configurations
–4–
REV. 0
ADM223/ADM230L–ADM241L
+5V INPUT
C1+
V+
C1–
C2+
C2–
V–
T2
OUT
R2
IN
1
2
3
4
5
6
7
8
16 V
CC
15
14
GND
T1
OUT
R1
IN
R1
OUT
T1
IN
T2
IN
R2
OUT
1µF
6.3V
1 C1+
3
C1–
+5V TO +10V
VOLTAGE
DOUBLER
V
CC
16
V+ 2
1µF
6.3V
1µF
6.3V
1µF
16V
4 C2+
5 C2–
+10V TO –10V
VOLTAGE
INVERTER
V–
6
1µF
16V
ADM232L
TOP VIEW
(Not to Scale)
13
12
11
10
9
T1
IN
TTL/CMOS
INPUTS
*
T2
IN
11
T1
14
T1
OUT
T2
OUT
R1
IN
RS-232
OUTPUTS
10
T2
7
R1
OUT
TTL/CMOS
OUTPUTS
R2
OUT
12
9
GND
15
R1
13
RS-232
INPUTS
**
R2
8
R2
IN
ADM232L
Figure 5. ADM232L DIP/SOIC Pin Configuration
*
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT
**INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT
Figure 6. ADM232L Typical Operating Circuit
+5V INPUT
7
V
CC
T2
IN
T1
IN
R1
OUT
R1
IN
T1
OUT
GND
V
CC
C1+
GND
C2–
1
2
3
4
5
6
7
8
9
10
20
19
18
17
R2
OUT
R2
IN
T2
OUT
V–
C2–
C2+
V+
C1–
V–
C2+
T1
IN
TTL/CMOS
INPUTS
*
T2
IN
2
T1
5
T1
OUT
T2
OUT
R1
IN
RS-232
OUTPUTS
1
T2
18
R1
OUT
TTL/CMOS
OUTPUTS
R2
OUT
DO NOT MAKE
CONNECTIONS TO
THESE PINS
INTERNAL
–10V POWER
SUPPLY
INTERNAL
+10V POWER
SUPPLY
3
20
8 C1+
13 C1–
12 V–
17 V–
14 V+
R1
4
ADM233L
TOP VIEW
(Not to Scale)
16
15
14
13
12
11
RS-232
INPUTS
**
R2
19
R2
IN
C2+ 11
C2+ 15
C2– 10
C2– 16
GND
6
GND
9
ADM233L
Figure 7. ADM233L DIP Pin Configuration
*
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT
**INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT
Figure 8. ADM233L Typical Operating Circuit
REV. 0
–5–
NXP MCU
