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HomeProductsIntegrated Circuits (ICs)Interface - Drivers, Receivers, TransceiversADM238LJR
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ADM238LJR - Analog Devices Inc.

Manufacturer Part Number
ADM238LJR
Manufacturer
Analog Devices, Inc.
Allelco Part Number
32D-ADM238LJR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
4,030 pcs available, New & Original
Parts Description
IC TRANSCEIVER FULL 4/4 24SOIC
Package
24-SOIC
Data sheet
ADM238LJR.pdf
RoHs Status
 
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In stock: 4030

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Specifications

ADM238LJR Tech Specifications
Analog Devices Inc. - ADM238LJR technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. - ADM238LJR

Product Attribute Attribute Value
Manufacturer Analog Devices, Inc.
Voltage - Supply 4.75V ~ 5.25V
Type Transceiver
Supplier Device Package 24-SOIC
Series -
Receiver Hysteresis 650 mV
Protocol RS232
Package / Case 24-SOIC (0.295", 7.50mm Width)
Product Attribute Attribute Value
Package Tube
Operating Temperature 0°C ~ 70°C
Number of Drivers/Receivers 4/4
Mounting Type Surface Mount
Duplex Full
Data Rate 120Kbps
Base Product Number ADM238

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
Moisture Sensitivity Level (MSL) 1 (Unlimited)
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

ADM238LJR Image
ADM238LJR (1)

Manufacturer Part Number

ADM238LJR

Manufacturer

Analog Devices

Introduction

ADM238LJR is an RS232 transceiver, designed for interfacing data communication units to RS232.

Product Features and Performance

RS232 protocol support

Full duplex communication enabled

Four drivers and four receivers

Data rate of up to 120Kbps

Receiver hysteresis of 650 mV

Operates on a voltage supply of 4.75V to 5.25V

Surface mount type, 24-SOIC package

Product Advantages

Integrated full duplex operation

High data transmission rate for efficient communication

Optimal number of drivers and receivers for interfacing multiple units

Key Technical Parameters

Drivers/Receivers: 4/4

Duplex: Full

Data Rate: 120Kbps

Receiver Hysteresis: 650 mV

Voltage Supply: 4.75V ~ 5.25V

Operating Temperature: 0°C ~ 70°C

Quality and Safety Features

Reliable operation within a standard temperature range

Compatibility

Compatible with various data communication units and systems using RS232 protocol

Application Areas

Data communication in telecommunication networks

Communication interface in industrial machinery and computer systems

Product Lifecycle

Status: Obsolete

Note: Check for potential replacements or upgrades available

Several Key Reasons to Choose This Product

Reliable high-speed data transmission capability

Versatile in interfacing with multiple RS232 interfaces

Suitable for a variety of applications ranging from industrial to telecommunications

Obsolete status can signify reduced prices or remaining stock advantages

Frequently Asked Questions(FAQ)

What is the maximum data rate supported by the ADM238LJR transceiver when operating in full-duplex RS232 communication?
The ADM238LJR supports a maximum data rate of 120 Kbps under typical operating conditions, which enables reliable bidirectional serial communication at moderate speeds for embedded control applications.
How does the receiver hysteresis of 650 mV in the ADM238LJR improve noise immunity compared to lower-hysteresis designs?
With 650 mV of receiver hysteresis, the ADM238LJR provides robust noise filtering by preventing false triggering from small signal fluctuations or electromagnetic interference, which is especially beneficial in electrically noisy industrial environments.
Can the ADM238LJR be substituted with the MAX238EWG+ in a design targeting 5V operation within a temperature range of 0°C to 70°C?
Yes, the MAX238EWG+ is a suitable substitute for the ADM238LJR, as both devices share the same pinout, supply voltage range (4.75V to 5.25V), and full-duplex RS232 functionality, ensuring compatibility in similar temperature-limited applications.
What are the key differences between the ADM238LJR and the MAX208CWG+ in terms of driver/receiver configuration and protocol support?
While both support RS232 protocols, the ADM238LJR offers a 4/4 driver/receiver configuration for full-duplex communication, whereas the MAX208CWG+ typically features fewer channels (e.g., 3/5), making it less ideal for symmetric bidirectional data exchange without additional components.
Is the ADM238LJR compatible with 3.3V logic levels, given its specified supply voltage range?
No, the ADM238LJR operates strictly within a 4.75V to 5.25V supply range, so direct interfacing with 3.3V TTL logic requires level-shifting circuitry unless the receiving side can tolerate higher input thresholds.
What impact does the surface-mount SOIC packaging have on thermal performance and PCB layout when using the ADM238LJR?
The 24-SOIC package (24-SOIC, 7.50mm width) offers compact form factor but limited exposed thermal pads, so adequate copper pour and thermal vias are recommended during layout to maintain junction temperatures within safe limits under continuous operation.
How does the ADM238LJR handle electrostatic discharge protection, and what precautions should be taken during assembly?
The ADM238LJR does not specify integrated ESD protection beyond standard IC handling; therefore, proper grounding, anti-static workstations, and conformal coating post-assembly are advised to prevent damage during handling and environmental exposure.
In a system requiring long cable runs for RS232 signaling, how might the ADM238LJR’s 120 Kbps limit affect reliability?
At 120 Kbps, the ADM238LJR may experience increased bit error rates over longer cables due to capacitance and inductance effects; reducing the baud rate or adding line drivers/receivers could improve signal integrity in such scenarios.
What role does the Moisture Sensitivity Level (MSL) rating of 1 play in the manufacturing process for boards using the ADM238LJR?
With an MSL rating of 1, the ADM238LJR is not sensitive to moisture and can undergo unlimited storage before reflow soldering, simplifying inventory management and production scheduling without special dry storage requirements.
Can multiple ADM238LJR transceivers be cascaded to extend RS232 channel count in a single system?
While technically possible, cascading multiple ADM238LJR devices introduces timing skew and increases power consumption; a more scalable solution would involve dedicated multi-channel RS232 ICs like the MAX208 series.
How does the ADM238LJR compare to newer RS232 transceivers in terms of power consumption and efficiency?
Compared to modern low-power alternatives, the ADM238LJR draws higher quiescent current due to older fabrication processes, making it less suitable for battery-powered systems despite meeting legacy interface needs.
What considerations apply when replacing the ADM238LJR with the MAX238CWG+ in a legacy design?
The MAX238CWG+ shares functional equivalence and package type with the ADM238LJR, but verify supply current, ESD ratings, and temperature derating curves to ensure no degradation in reliability under identical operating profiles.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc. ADM238LJR

Product Attribute ADM238LJRZ-REEL ADM238LJR-REEL ADM238LARZ-REEL ADM238LJN
Part Number ADM238LJRZ-REEL ADM238LJR-REEL ADM238LARZ-REEL ADM238LJN
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Supply - - - -
Series - - - -
Protocol - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Type - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Number of Drivers/Receivers - - - -
Duplex - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Data Rate - - - -
Receiver Hysteresis - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)

ADM238LJR Datasheet PDF

Download ADM238LJR pdf datasheets and Analog Devices Inc. documentation for ADM238LJR - Analog Devices Inc..

Datasheets
ADM231L-234L, ADM236L-241L.pdf
PCN Assembly/Origin
Alternate Fabrication Foundry 26/Dec/2014.pdf
PCN Obsolescence/ EOL
EOL Lead (Pb)-Bearing 07/Oct/2016.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

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Brazil 7
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United Kingdom 4
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New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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Packaging

Electrostatic Discharge Protection and Handling

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Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
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ADM238LJR Image

ADM238LJR

Analog Devices Inc.
32D-ADM238LJR

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