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HomeProductsIntegrated Circuits (ICs)Specialized ICsADM242ARZ-REEL
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ADM242ARZ-REEL - Analog Devices

Manufacturer Part Number
ADM242ARZ-REEL
Manufacturer
Analog Devices, Inc.
Allelco Part Number
41D-ADM242ARZ-REEL
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
14,910 pcs available, New & Original
Parts Description
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Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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Our certification
In stock: 14910
  • Unit Price: $7.457
  • Subtotal: $0.00

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Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $7.457 $7.46
10+ $7.154 $71.54
30+ $6.628 $198.84
100+ $6.17 $617.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

ADM242ARZ-REEL Tech Specifications
Analog Devices - ADM242ARZ-REEL technical specifications, attributes, parameters and parts with similar specifications to Analog Devices - ADM242ARZ-REEL

Product Attribute Attribute Value
Part Number ADM242ARZ-REEL
Package -
Description -
Stock Condition Get 14910 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer Analog Devices, Inc.
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Parts Introduction

Manufacturer Part Number

ADM242ARZ-REEL

Manufacturer

analog-devices

Introduction

The ADM242ARZ-REEL is a high-performance, dual-channel, full-duplex RS232 transceiver from Analog Devices. It is designed to provide an easy-to-use and reliable interface between digital logic and RS232 serial communication lines, enabling seamless data transmission and reception.

Product Features and Performance

Dual-channel, full-duplex RS232 transceiver

Supports data rates up to 200 kbps

Operates on a single 4.5V to 5.5V power supply

Receiver hysteresis of 400 mV

Wide operating temperature range of -40°C to 85°C

Surface mount 18-SOIC package

Product Advantages

Robust and reliable RS232 communication

Efficient power consumption

Wide temperature tolerance for diverse applications

Small form factor for space-constrained designs

Key Reasons to Choose This Product

High-performance, cost-effective RS232 interface solution

Proven reliability and long-term durability

Easy integration and seamless connectivity

Ideal for a wide range of industrial, consumer, and commercial applications

Quality and Safety Features

Rigorous quality control and testing

Compliance with relevant industry standards

Designed for robust and safe operation

Compatibility

The ADM242ARZ-REEL is compatible with a wide range of digital logic and RS232 serial communication systems, making it a versatile choice for various applications.

Application Areas

Industrial automation and control systems

Telecommunications equipment

Consumer electronics

Medical devices

Automotive electronics

Product Lifecycle

The ADM242ARZ-REEL is an active product, and Analog Devices continues to manufacture and support it. There are no immediate plans for discontinuation. However, as technology evolves, equivalent or alternative models may become available in the future. If you have any questions or need further assistance, please contact our sales team through our website.

Frequently Asked Questions(FAQ)

What are the key design considerations when integrating the ADM242ARZ-REEL into a 5V industrial control system with long RS232 cable runs?
The ADM242ARZ-REEL operates within a 4.5V to 5.5V supply range, making it compatible with standard 5V logic systems, but its ±12V RS232 output levels require attention to ground integrity and noise coupling over extended cables. With a maximum data rate of 200 kbps, signal degradation becomes significant beyond 15 meters unless low-capacitance cable and proper termination are used. The 400 mV receiver hysteresis improves noise immunity in electrically noisy environments, but system-level shielding and isolated power domains should still be considered to maintain signal fidelity.
How does the ADM242ARZ-REEL compare to the ADM3202 in terms of power supply flexibility and integration complexity?
Unlike the ADM3202, which requires a separate charge pump and external capacitors for voltage doubling, the ADM242ARZ-REEL integrates dual charge pumps and voltage regulators, reducing external component count and PCB footprint. This makes the ADM242ARZ-REEL more suitable for space-constrained designs, though both devices support 5V-only operation. The ADM242ARZ-REEL’s internal regulation allows stable RS232 levels even under varying load conditions, whereas the ADM3202 may exhibit output droop without careful capacitor selection.
Can the ADM242ARZ-REEL be used in battery-powered applications, and what is its typical quiescent current under light load?
While the ADM242ARZ-REEL is not optimized for ultra-low-power operation, its typical supply current is approximately 3 mA at 200 kbps with no load, which may be acceptable in moderate-duty-cycle battery applications. However, in idle or low-activity states, the internal charge pumps continue to operate, drawing additional current. For extended battery life, consider placing the device in shutdown mode (if supported by the system controller) or evaluating lower-power alternatives like the MAX3221, which offers true shutdown with 1 µA leakage.
What layout practices are critical to ensure reliable operation of the ADM242ARZ-REEL in a mixed-signal PCB environment?
The ADM242ARZ-REEL’s internal charge pumps generate switching noise at frequencies up to several MHz, so careful attention to decoupling and grounding is essential. Place 0.1 µF ceramic capacitors as close as possible to the VCC and charge pump pins (C1+, C1–, C2+, C2–), and use a solid ground plane beneath the device. Route RS232 traces away from sensitive analog or high-speed digital lines to prevent crosstalk. The 18-SOIC package’s 7.5 mm width allows tight placement, but thermal vias under the exposed pad (if present) are not required due to low power dissipation.
How does receiver hysteresis in the ADM242ARZ-REEL improve performance in electrically noisy industrial environments?
The 400 mV hysteresis in the ADM242ARZ-REEL’s receivers prevents multiple false transitions when the input signal is near the logic threshold, a common issue in environments with electromagnetic interference or ground bounce. This hysteresis window effectively filters out noise spikes below 400 mV peak-to-peak, enhancing data integrity without requiring external Schmitt triggers. In practice, this allows reliable communication even when signal margins are degraded by cable resistance or connector corrosion.
Is the ADM242ARZ-REEL suitable for daisy-chained RS232 networks with multiple transceivers on the same bus?
The ADM242ARZ-REEL is a full-duplex transceiver with standard RS232 driver output impedance and receiver input characteristics, but RS232 is not a multi-drop protocol. While it can technically interface with multiple devices, only one driver should be active at a time to avoid bus contention. For multi-node communication, consider using RS485 transceivers instead. If RS232 must be used, implement software-controlled enable/disable logic or use transceivers with tri-state outputs to isolate inactive nodes.
What is the expected signal integrity of the ADM242ARZ-REEL when transmitting at 200 kbps over 10 meters of unshielded twisted pair?
At 200 kbps, the ADM242ARZ-REEL can maintain reliable communication over 10 meters of unshielded twisted pair, provided the cable capacitance does not exceed approximately 2500 pF—the RS232 specification limit. Typical UTP cable has 50–60 pF/m, resulting in 500–600 pF total, well within range. However, rise and fall times may slow slightly due to RC effects, potentially reducing noise margin. Termination is not required at this speed and distance, but grounding one end of the cable shield (if used) minimizes ground loops.
How does the operating temperature range of the ADM242ARZ-REEL influence its deployment in outdoor or automotive applications?
With an operating temperature range of –40°C to +85°C, the ADM242ARZ-REEL meets the requirements for many industrial and automotive under-hood applications, though it does not comply with full AEC-Q100 standards. In cold environments, RS232 cable capacitance decreases slightly, which can marginally improve signal rise times, but connector brittleness and condensation become greater concerns. In high-temperature scenarios, ensure adequate airflow or thermal relief, as sustained operation near 85°C may accelerate capacitor aging in nearby decoupling networks.
Can the ADM242ARZ-REEL be used with 3.3V microcontrollers without level shifting?
No, the ADM242ARZ-REEL requires a 4.5V to 5.5V supply and is not compatible with 3.3V logic levels on its TTL-side inputs. While its receiver inputs are 5V-tolerant, applying 3.3V logic to the driver inputs may result in undefined thresholds and unreliable transmission. A level shifter or a 3.3V-compatible RS232 transceiver such as the SP3232E should be used instead. Alternatively, some microcontrollers with 5V-tolerant I/O pins can interface directly, but this must be verified in the MCU datasheet.
What are the advantages of the ADM242ARZ-REEL’s integrated charge pump compared to discrete RS232 solutions?
The ADM242ARZ-REEL eliminates the need for external ±12V power supplies by integrating dual charge pumps and voltage doublers/inverters, generating the required RS232-compliant ±10V output levels from a single 5V supply. This reduces BOM complexity, saves board space, and improves reliability by minimizing component count. Additionally, the internal regulation maintains stable output voltages across temperature and load variations, unlike discrete designs that may drift under load transients or supply fluctuations.
How does the ADM242ARZ-REEL handle ESD events on the RS232 lines, and what additional protection is recommended?
The ADM242ARZ-REEL includes built-in ESD protection up to ±15 kV (HBM) on the RS232 I/O pins, exceeding typical IEC 61000-4-2 requirements. However, in harsh environments such as factory floors or exposed outdoor ports, supplementary TVS diodes (e.g., SMAJ12CA) placed near the connector can further clamp transient voltages and reduce stress on the transceiver. Ensure the TVS breakdown voltage is above ±12V to avoid interfering with normal RS232 signal swings.
What is the significance of the MSL 1 rating for the ADM242ARZ-REEL in high-volume manufacturing?
The moisture sensitivity level (MSL) 1 rating indicates that the ADM242ARZ-REEL can be exposed to ambient conditions indefinitely without requiring dry packing or baking before reflow soldering. This simplifies logistics and handling in high-volume production environments, reducing the risk of moisture-induced defects during assembly. Combined with its RoHS3 compliance and REACH unaffected status, the device supports streamlined global manufacturing and regulatory compliance.
Can the ADM242ARZ-REEL support baud rates higher than 200 kbps with reduced cable length?
The ADM242ARZ-REEL is specified for a maximum data rate of 200 kbps, and exceeding this limit may result in signal distortion due to driver slew rate limitations and capacitive loading. While short cables (under 1 meter) might tolerate brief overclocking, sustained operation above 200 kbps is not recommended and may violate RS232 timing margins. For higher-speed serial communication, consider RS485 or USB-to-serial bridge solutions that support multi-megabaud rates with proper impedance matching.
How does the ADM242ARZ-REEL perform in systems with split or floating ground references between communicating devices?
The ADM242ARZ-REEL assumes a common ground reference between transmitter and receiver, as per RS232 standards. In systems with floating or isolated grounds, ground potential differences can cause current flow through the signal lines, leading to communication errors or device damage. For such applications, use isolated RS232 transceivers like the ADM2587E, which integrate signal and power isolation, or implement optocouplers with isolated power supplies to break ground loops while maintaining data integrity.

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Customer Reviews

Evaluation: 10 Articles

  • 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.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
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.
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Analog Devices

ADM242ARZ-REEL

Analog Devices
41D-ADM242ARZ-REEL

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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