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Datasheet> All Categories > Analog mixed-signal IC> Drivers and interfaces> ADM238LAN
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ADM238LAN

Description
Low Power, +5V CMOS RS-232 100kBPS Transceiver with 4 Drivers and 4 Receivers
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size339KB，20 Pages
ManufacturerADI
Websitehttps://www.analog.com
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ADM238LAN Overview

Low Power, +5V CMOS RS-232 100kBPS Transceiver with 4 Drivers and 4 Receivers

ADM238LAN Parametric

Parameter NameAttribute value
Source Url Status Check Date2013-05-01 14:56:40.794
Brand NameAnalog Devices Inc
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerADI
Parts packaging codeDIP
package instructionPLASTIC, MO-095AG, DIP-24
Contacts24
Manufacturer packaging codeN-24-1
Reach Compliance Codenot_compliant
ECCN codeEAR99
Other featuresINTERNAL CHARGE PUMP
Differential outputNO
Number of drives4
Input propertiesSCHMITT TRIGGER
Interface integrated circuit typeLINE TRANSCEIVER
Interface standardsEIA-232-E; V.28
JESD-30 codeR-PDIP-T24
JESD-609 codee0
length29.59 mm
Number of functions4
Number of terminals24
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Minimum output swing10 V
Output characteristicsTOTEM-POLE
Output polarityINVERTED
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP24,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT APPLICABLE
power supply5 V
Certification statusNot Qualified
Maximum receive delay
Number of receiver bits4
Maximum seat height4.57 mm
Maximum slew rate6 mA
Maximum supply voltage5.5 V
Minimum supply voltage4.5 V
Nominal supply voltage5 V
surface mountNO
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn85Pb15)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT APPLICABLE
width7.62 mm

ADM238LAN Preview

5 V-Powered
CMOS RS-232 Drivers/Receivers
ADM231L–ADM234L/ADM236L–ADM241L
FEATURES
Single 5 V power supply
Meets all EIA-232-E and V.28 specifications
120 kbps data rate
On-board dc-to-dc converters
±9 V output swing with 5 V supply
Small 1 µF capacitors
Low power shutdown ≤1 µA
±30 V receiver input levels
Latch-up free
ADM236L TYPICAL OPERATING CIRCUIT
+5V INPUT
C1+
C1–
C2+
C2–
V
CC
V+
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
1µF
+6.3V
1µF
+6.3V
1µF
+6.3V
1µF
+16V
V–
1µF
+16V
T1
OUT
T2
OUT
T3
OUT
T4
OUT
R1
IN
R2
IN
R3
IN
SD
RS-232
INPUTS
2
RS-232
OUTPUTS
T1
IN
T2
IN
TTL/CMOS
INPUTS
1
T3
IN
T4
IN
R1
OUT
TTL/CMOS
OUTPUTS
R2
OUT
R3
OUT
T1
T2
APPLICATIONS
Computers
Peripherals
Modems
Printers
Instruments
T3
T4
R1
R2
R3
GENERAL DESCRIPTION
EN
The ADM2xx family of line drivers/receivers is intended for all
EIA-232-E and V.28 communications interfaces, especially in
applications in which 12 V is not available. The 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. The ADM233L does not
require any external components and is particularly useful in
applications where printed circuit board space is critical.
All members of the ADM2xxL family, except the ADM231L and
ADM239L, include two internal charge pump voltage converters
that allow operation from a single 5 V supply. These parts convert
the 5 V input power to the ±10 V required for RS-232 output
Table 1. Selection Table
Part
Number
ADM231L
ADM232L
ADM233L
ADM234L
ADM236L
ADM237L
ADM238L
ADM239L
ADM241L
Rev. C
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.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
GND
ADM236L
1
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.
2
INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.
Figure 1.
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 to the AD2xx family. It
features lower power consumption, faster slew rate, and the
ability to operate with smaller (1 µF) capacitors.
Power Supply Voltage
5 V and 7.5 V to 13.2 V
5V
5V
5V
5V
5V
5V
5 V and 7.5 V to 13.2 V
5V
No. of RS-232
Drivers
2
2
2
4
4
5
4
3
4
No. of RS-232
Receivers
2
2
2
0
3
3
4
5
5
External
Capacitors
2
4
None
4
4
4
4
2
4
Low Power
Shutdown (SD)
No
No
No
No
Yes
No
No
No
Yes
TTL
Three-State EN
No
No
No
No
Yes
No
No
Yes
Yes
No. of
Pins
14
16
20
16
24
24
24
24
28
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
© 2005 Analog Devices, Inc. All rights reserved.
00070-0-015
ADM231L–ADM234L/ADM236L–ADM241L
TABLE OF CONTENTS
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 4
ESD Caution.................................................................................. 4
Pin Configurations and Function Descriptions ........................... 5
Typical Performance Characteristics ............................................. 8
Typical Operating Circuits .............................................................. 9
General Information ...................................................................... 12
Circuit Description .................................................................... 12
Application Hints ....................................................................... 13
Outline Dimensions ....................................................................... 14
Ordering Guide .......................................................................... 17
REVISION HISTORY
4/05—Rev. B to Rev. C
Updated Format..................................................................Universal
Removed ADM223, ADM230L, and ADM235L............Universal
Changed Hysteresis Level ..................................................Universal
Changes to Specifications Table...................................................... 3
Updated Outline Dimensions ....................................................... 14
Changes to Ordering Guide .......................................................... 17
5/01—Rev. A to Rev. B
Edits to Test Conditions/Comments of Specifications................ 2
1/01—Rev. 0 to Rev. A
Removed ESD information from Features section ...................... 1
Changes to Specifications Table...................................................... 2
Removed ESD information from
Absolute Maximum Ratings section .............................................. 2
Revision 0: Initial Version
Rev. C | Page 2 of 20
ADM231L–ADM234L/ADM236L–ADM241L
SPECIFICATIONS
V
CC
= 5 V ± 10% (ADM231L, ADM232L, ADM234L, ADM236L, ADM238L, ADM239L, ADM241L); V
CC
= 5 V ± 5% (ADM233L and
ADM237L); V+ = 7.5 V to 13.2 V (ADM231L and ADM239L); C1 to C4 = 1.0 µF ceramic. All specifications T
MIN
to T
MAX
, unless
otherwise noted.
Table 2.
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
Transition Region Slew Rate
Output Resistance
RS-232 Output Short-Circuit Current
1
Min
±5
Typ
±9
2.5
3.5
1.5
1
Max
6.0
13
4
10
0.8
25
+30
Unit
V
mA
mA
mA
µA
V
V
µA
V
V
V
V
kΩ
V
V
µA
ns
ns
µs
V/µs
Ω
mA
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
2.0
12
–30
0.8
1.2
1.6
0.65
5
1
2.4
7
0.4
±10
3
3.5
T
A
= 0°C to 85°C
I
OUT
= −1.0 mA
EN = V
CC
, 0 V ≤ R
OUT
≤ V
CC
ADM236L, ADM239L, ADM241L (Figure 31, C
L
= 150 pF)
ADM236L, ADM239L, ADM241L (Figure 31, 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
+0.05
250
50
0.3
8
300
±10
Guaranteed by design.
Rev. C | Page 3 of 20
ADM231L–ADM234L/ADM236L–ADM241L
ABSOLUTE MAXIMUM RATINGS
T
A
= 25°C, unless otherwise noted.
Table 3.
Parameter
V
CC
V+
V–
Input Voltages
T
IN
R
IN
Output Voltages
T
OUT
R
OUT
Short-Circuit Duration
T
OUT
Power Dissipation
N-14 PDIP (Derate 10 mW/°C
above 70°C)
N-16 PDIP (Derate 10.5 mW/°C
above 70°C)
N-20 PDIP (Derate 11 mW/°C
above 70°C)
N-24-1 PDIP (Derate
13.5 mW/°C above 70°C)
R-16 SOIC (Derate 9 mW/°C
above 70°C)
R-24 SOIC (Derate 12 mW/°C
above 70°C)
R-28 SOIC (Derate 12.5 mW/°C
above 70°C)
RS-28 SSOP (Derate 10 mW/°C
above 70°C)
Rating
–0.3 V to +6 V
(V
CC
– 0.3 V) to +14 V
+0.3 V to −14 V
–0.3 V to (V
CC
+ 0.3 V)
±30 V
(V+, +0.3 V) to (V–, –0.3 V)
–0.3 V to (V
CC
+ 0.3 V)
Continuous
800 mW
840 mW
890 mW
1000 mW
760 mW
850 mW
900 mW
900 mW
Parameter
Q-14 CERDIP (Derate 10 mW/°C
above 70°C)
Q-16 CERDIP (Derate 10 mW/°C
above 70•C)
Q-24 CERDIP (Derate
12.5 mW/°C above 70°C)
Thermal Impedance, θ
JA
N-14 PDIP
N-16 PDIP
N-20 PDIP
N-24-1 PDIP
R-16 SOIC
R-24 SOIC
R-28 SOIC
RS-28 SSOP
Q-14 CERDIP
Q-16 CERDIP
Q-24 CERDIP
Operating Temperature Range
Commercial (J Version)
Industrial (A Version)
Storage Temperature Range
Lead Temperature, Soldering
Vapor Phase (60 sec)
Infrared (15 sec)
Rating
720 mW
800 mW
1000 mW
140°C/W
135°C/W
125°C/W
120°C/W
105°C/W
85°C/W
80°C/W
100°C/W
105°C/W
100°C/W
55°C/W
0°C to 70°C
−40°C to +85°C
−65°C to +150°C
300°C
215°C
220° C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. 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 specification is not implied. Exposure to
absolute maximum rating conditions for extended periods of
time may affect device reliability.
ESD 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 this product 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.
Rev. C | Page 4 of 20
ADM231L–ADM234L/ADM236L–ADM241L
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
T2
IN
T1
IN
R1
OUT
1
2
3
4
5
6
7
8
9
10
20 R2
OUT
19 R2
IN
18 T2
OUT
17 V–
C1+
C1–
V–
T2
OUT
R2
IN
R2
OUT
T2
IN
1
2
3
4
5
6
7
14 V+
13 V
CC
R1
IN
T1
OUT
GND
V
CC
C1+
GND
00070-0-004
ADM233L
TOP VIEW
(Not to Scale)
16 C2–
15 C2+
14
V+
ADM231L
TOP VIEW
(Not to Scale)
12 GND
11 T1
OUT
10 R1
IN
9
8
R1
OUT
T1
IN
13 C1–
12
V–
00070-0-008
00070-0-014
C2–
11 C2+
Figure 2. ADM231L PDIP Pin Configuration
Figure 5. ADM233L PDIP Pin Configuration
C1+
C1–
V–
T2
OUT
R2
IN
R2
OUT
T2
IN
NC
1
2
3
4
5
6
7
8
NC = NO CONNECT
16 V+
15 V
CC
14 GND
T1
OUT
T2
OUT
T2
IN
T1
IN
GND
V
CC
00070-0-037
1
2
3
4
5
6
7
8
16
15
14
T3
OUT
T4
OUT
T4
IN
T3
IN
V–
C2–
C2+
C1–
00070-0-010
ADM231L
TOP VIEW
(Not to Scale)
13 T1
OUT
12 R1
IN
11 R1
OUT
10 T1
IN
9
NC
ADM234L
TOP VIEW
(Not to Scale)
13
12
11
10
9
C1+
V+
Figure 3. ADM231L SOIC Pin Configuration
Figure 6. ADM234L PDIP/CERDIP/SOIC Pin Configuration
T3
OUT
T1
OUT
T2
OUT
R1
IN
1
2
3
4
5
6
7
8
9
24 T4
OUT
23 R2
IN
22 R2
OUT
21 SD
20 EN
C1+
V+
C1–
C2+
C2–
V–
T2
OUT
R2
IN
1
2
3
4
5
6
7
8
16 V
CC
15 GND
14 T1
OUT
R1
OUT
T2
IN
T1
IN
GND
V
CC
ADM236L
TOP VIEW
(Not to Scale)
19
T4
IN
18 T3
IN
17 R3
OUT
16 R3
IN
15 V–
14 C–
13 C2+
ADM232L
TOP VIEW
(Not to Scale)
13 R1
IN
12 R1
OUT
11 T1
IN
10
9
T2
IN
R2
OUT
C1+ 10
V+ 11
00070-0-006
C1– 12
Figure 4. ADM232L PDIP/CERDIP/SOIC Pin Configuration
Figure 7. ADM236L PDIP/SOIC Pin Configuration
Rev. C | Page 5 of 20
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ADM238LAN Related Products

ADM238LAN ADM238LJRZ-REEL ADM238LJN ADM238LJRZ ADM238LAR ADM237LJN ADM233LAN ADM233LJN
Description Low Power, +5V CMOS RS-232 100kBPS Transceiver with 4 Drivers and 4 Receivers Low Power, +5V CMOS RS-232 100kBPS Transceiver with 4 Drivers and 4 Receivers Low Power, +5V CMOS RS-232 100kBPS Transceiver with 4 Drivers and 4 Receivers Low Power, +5V CMOS RS-232 100kBPS Transceiver with 4 Drivers and 4 Receivers Low Power, +5V CMOS RS-232 100kBPS Transceiver with 4 Drivers and 4 Receivers Low Power, +5V CMOS RS-232 100kBPS Transceiver with 5 Drivers and 3 Receivers Low Power, +5V CMOS RS-232 120kBPS Transceiver with 2 Drivers & 2 Receivers. No External Capacitors Required Low Power, +5V CMOS RS-232 120kBPS Transceiver with 2 Drivers & 2 Receivers. No External Capacitors Required
Brand Name Analog Devices Inc Analog Devices Inc Analog Devices Inc Analog Devices Inc Analog Devices Inc Analog Devices Inc Analog Devices Inc Analog Devices Inc
Is it lead-free? Contains lead Contains lead Contains lead Contains lead Contains lead Contains lead Contains lead Contains lead
Is it Rohs certified? incompatible conform to incompatible conform to incompatible incompatible incompatible incompatible
Maker ADI ADI ADI ADI ADI ADI ADI ADI
Parts packaging code DIP SOIC DIP SOIC SOIC DIP DIP DIP
package instruction PLASTIC, MO-095AG, DIP-24 SOP, SOP24,.4 PLASTIC, MO-095AG, DIP-24 SOP, SOP24,.4 SOP, SOP24,.4 DIP, DIP24,.3 DIP, DIP20,.3 DIP, DIP20,.3
Contacts 24 24 24 24 24 24 20 20
Manufacturer packaging code N-24-1 RW-24 N-24-1 RW-24 RW-24 N-24-1 N-20 N-20
Reach Compliance Code not_compliant compliant not_compliant compliant not_compliant not_compliant not_compliant not_compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Other features INTERNAL CHARGE PUMP INTERNAL CHARGE PUMP INTERNAL CHARGE PUMP INTERNAL CHARGE PUMP INTERNAL CHARGE PUMP INTERNAL CHARGE PUMP INTERNAL CHARGE PUMP INTERNAL CHARGE PUMP
Differential output NO NO NO NO NO NO NO NO
Number of drives 4 4 4 4 4 5 2 2
Input properties SCHMITT TRIGGER SCHMITT TRIGGER SCHMITT TRIGGER SCHMITT TRIGGER SCHMITT TRIGGER SCHMITT TRIGGER SCHMITT TRIGGER SCHMITT TRIGGER
Interface integrated circuit type LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER
Interface standards EIA-232-E; V.28 EIA-232-E; V.28 EIA-232-E; V.28 EIA-232-E; V.28 EIA-232-E; V.28 EIA-232-E; V.28 EIA-232-E; V.28 EIA-232-E; V.28
JESD-30 code R-PDIP-T24 R-PDSO-G24 R-PDIP-T24 R-PDSO-G24 R-PDSO-G24 R-PDIP-T24 R-PDIP-T20 R-PDIP-T20
JESD-609 code e0 e3 e0 e3 e0 e0 e0 e0
length 29.59 mm 15.4 mm 29.59 mm 15.4 mm 15.4 mm 29.59 mm 24.51 mm 24.51 mm
Number of functions 4 4 4 4 4 3 2 2
Number of terminals 24 24 24 24 24 24 20 20
Maximum operating temperature 85 °C 70 °C 70 °C 70 °C 85 °C 70 °C 85 °C 70 °C
Minimum output swing 10 V 10 V 10 V 10 V 10 V 10 V 10 V 10 V
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code DIP SOP DIP SOP SOP DIP DIP DIP
Encapsulate equivalent code DIP24,.3 SOP24,.4 DIP24,.3 SOP24,.4 SOP24,.4 DIP24,.3 DIP20,.3 DIP20,.3
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form IN-LINE SMALL OUTLINE IN-LINE SMALL OUTLINE SMALL OUTLINE IN-LINE IN-LINE IN-LINE
Peak Reflow Temperature (Celsius) NOT APPLICABLE 260 NOT APPLICABLE 260 240 NOT APPLICABLE NOT APPLICABLE NOT APPLICABLE
power supply 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Number of receiver bits 4 4 4 4 4 3 2 2
Maximum seat height 4.57 mm 2.65 mm 4.57 mm 2.65 mm 2.65 mm 4.57 mm 4.57 mm 4.57 mm
Maximum slew rate 6 mA 13 mA 6 mA 13 mA 6 mA 6 mA 6 mA 6 mA
Maximum supply voltage 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.25 V 5.25 V 5.25 V
Minimum supply voltage 4.5 V 4.5 V 4.5 V 4.5 V 4.5 V 4.75 V 4.75 V 4.75 V
Nominal supply voltage 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V
surface mount NO YES NO YES YES NO NO NO
technology CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS
Temperature level INDUSTRIAL COMMERCIAL COMMERCIAL COMMERCIAL INDUSTRIAL COMMERCIAL INDUSTRIAL COMMERCIAL
Terminal surface Tin/Lead (Sn85Pb15) Matte Tin (Sn) Tin/Lead (Sn85Pb15) Matte Tin (Sn) Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15)
Terminal form THROUGH-HOLE GULL WING THROUGH-HOLE GULL WING GULL WING THROUGH-HOLE THROUGH-HOLE THROUGH-HOLE
Terminal pitch 2.54 mm 1.27 mm 2.54 mm 1.27 mm 1.27 mm 2.54 mm 2.54 mm 2.54 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature NOT APPLICABLE 30 NOT APPLICABLE 30 30 NOT APPLICABLE NOT APPLICABLE NOT APPLICABLE
width 7.62 mm 7.5 mm 7.62 mm 7.5 mm 7.5 mm 7.62 mm 7.62 mm 7.62 mm
Source Url Status Check Date 2013-05-01 14:56:40.794 - 2013-05-01 14:56:40.833 - 2013-05-01 14:56:40.796 2013-05-01 14:56:40.791 2013-05-01 14:56:40.776 2013-05-01 14:56:40.787
Output characteristics TOTEM-POLE - TOTEM-POLE - TOTEM-POLE TOTEM-POLE TOTEM-POLE TOTEM-POLE
Output polarity INVERTED - INVERTED - INVERTED INVERTED INVERTED INVERTED

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How do you determine the proportional coefficient and integral coefficient in the PI algorithm? Please teach me~~~~...
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