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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)
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
5 V Powered
CMOS RS-232 Drivers/Receivers
ADM223/ADM230L–ADM241L
ADM232L TYPICAL OPERATING CIRCUIT
5V INPUT
C1+
C1–
C2+
C2–
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
V
CC
V+
1 F
6.3V
1 F
6.3V
1 F
6.3V
1 F
16V
V–
OBS
GENERAL DESCRIPTION
1 F
16V
T1
OUT
T2
OUT
R1
IN
R2
IN
RS-232
OUTPUTS
TTL/CMOS
INPUTS*
T1
IN
T2
IN
R1
OUT
R2
OUT
T1
T2
R1
R2
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.
OLE
TE
TTL/CMOS
OUTPUTS
GND
RS-232
INPUTS**
ADM232L
*
INTERNAL 400k PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
**
INTERNAL 5k PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
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 supplies. An internal
+12 V to –12 V charge pump voltage converter 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. B
Power
Supply Voltage
5V
5V
5 V and 7.5 V to 13.2 V
5V
5V
5V
5V
5V
5V
5V
5 V and 7.5 V to 13.2 V
5V
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 that
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: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2001
= 5 V 10% (ADM223, ADM231L,
ADM232L, ADM234L, ADM236L, ADM238L, ADM239L, ADM241L); V
CC
= 5 V 5% (ADM230L, ADM233L, ADM235L, ADM237L); V+ = 7.5 V to
13.2 V (ADM231L and ADM239L); C1–C4 = 1.0 F Ceramic. All Specifications T
MIN
to T
MAX
unless otherwise noted.)
CC
ADM223/ADM230L–ADM241L–SPECIFICATIONS
(V
Min
±
5
Typ
±
9
2.5
3.5
1.5
1
12
–30
0.8
3
1.2
1.6
0.25
5
0.05
250
50
Max Unit
Volts
6.0
mA
13
mA
4
mA
10
µA
0.8
V
V
25
µA
+30 V
V
2.4
V
V
7
kΩ
0.4
V
V
±
10
µA
ns
ns
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
1
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
)
Test Conditions/Comments
All Transmitter Outputs Loaded with 3 kΩ to Ground
No Load, (ADM232L only)
No Load
No Load, V+ = 12 V ADM231L and ADM239L Only
T
IN
,
EN,
SD, EN,
SD
T
IN
,
EN,
SD, EN,
SD
T
IN
= 0 V
2.4
OBS
3.5
Propagation Delay
Transition Region Slew Rate
Output Resistance
RS-232 Output Short Circuit Current
300
NOTES
1
Guaranteed by design.
Specifications subject to change without notice.
T
A
= 0°C to 85°C
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
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)
OLE
TE
0.3
8
µs
V/µs
±
10
Ω
mA
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
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . 215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220°C
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
*This
is a stress rating only; functional operation of the device at these or any other
conditions above those indicated in the operational sections of this specification is
not implied. Exposure to absolute maximum rating conditions for extended
periods of time may affect reliability.
–2–
REV. B
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
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
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
OBS
ADM235L
ADM235LJN 0°C to 70°C
ADM235LAN –40°C to +85°C
ADM235LAQ –40°C to +85°C
N-24A
N-24A
D-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
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
ADM236L
ADM236LJN
ADM236LJR
ADM236LAN
ADM236LAR
ADM236LAQ
ADM239L
ADM239LJN
ADM239LJR
ADM239LAN
ADM239LAR
ADM239LAQ
*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.
OLE
TE
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
ADM241L
ADM241LJR
ADM241LAR
ADM241LJRS
ADM241LARS
0°C to 70°C
–40°C to +85°C
0°C to 70°C
–40°C to +85°C
R-28
R-28
RS-28
RS-28
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
WARNING!
ESD SENSITIVE DEVICE
REV. B
–3–
ADM223/ADM230L–ADM241L
5V INPUT
V
CC
V+
1 F
6.3V
C1+
C1–
C2+
C2–
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
1 F
6.3V
1 F
6.3V
T3
OUT
T1
OUT
T2
OUT
T2
IN
T1
IN
GND
V
CC
1
2
3
4
5
6
7
8
20 T4
OUT
19 T5
IN
18 NC
17 SD
1 F
16V
V–
1 F
16V
T1
OUT
T2
OUT
T3
OUT
T4
OUT
T5
OUT
SD
RS-232
OUTPUTS
T1
IN
T2
IN
TTL/CMOS
INPUTS*
T3
IN
T4
IN
T5
IN
NC
GND
T1
ADM230L
TOP VIEW
(Not to Scale)
16 T5
OUT
15 T4
IN
14
T3
IN
T2
T3
OBS
C1+
13 V–
V+
9
12 C2–
C1–
10
11 C2+
NC = NO CONNECT
T4
T5
ADM230L
Figure 1. ADM230L DIP/SOIC Pin Configuration
DIP
C1+
C1–
V–
T2
OUT
R2
IN
R2
OUT
T2
IN
1
2
3
4
5
6
7
14 V+
13 V
CC
ADM231L
TOP VIEW
(Not to Scale)
12 GND
11
T1
OUT
10 R1
IN
9
8
R1
OUT
T1
IN
OLE
TE
*
INTERNAL 400k
PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
Figure 2. ADM230L Typical Operating Circuit
5V INPUT
1 F
V
CC
1 F
16V
C1+
C1–
+12V TO –12V
VOLTAGE
INVERTER
V+
V–
7.5V TO 13.2V
SOIC
T1
IN
T1
1 F
16V
T1
OUT
RS-232
OUTPUTS
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
TTL/CMOS
INPUTS*
T2
IN
R1
OUT
T2
T2
OUT
R1
R1
IN
ADM231L
TOP VIEW
(Not to Scale)
13
12
T1
OUT
R1
IN
TTL/CMOS
OUTPUTS
R2
OUT
GND
R2
R2
IN
RS-232
INPUTS**
11 R1
OUT
10
9
T1
IN
NC
ADM231L
*
INTERNAL 400k PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
**
INTERNAL 5k PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 3. ADM231L DIP and SOIC Pin Configurations
Figure 4. ADM231L Typical Operating Circuit (DIP Pinout)
–4–
REV. B
京公网安备 11010802033920号
EEWORLD
