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HomeProductsIntegrated Circuits (ICs)Interface - Drivers, Receivers, TransceiversAM26LV31EIDRG4
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AM26LV31EIDRG4 - Texas Instruments

Manufacturer Part Number
AM26LV31EIDRG4
Manufacturer
Texas Instruments
Allelco Part Number
32D-AM26LV31EIDRG4
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
13,920 pcs available, New & Original
Parts Description
IC DRIVER 4/0 16SOIC
Package
16-SOIC
Data sheet
AM26LV31EIDRG4.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 13920
  • Unit Price: $2.90
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $2.90 $2.90
10+ $2.541 $25.41
30+ $2.327 $69.81
100+ $2.11 $211.00
500+ $2.01 $1,005.00
1000+ $1.966 $1,966.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

AM26LV31EIDRG4 Tech Specifications
Texas Instruments - AM26LV31EIDRG4 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - AM26LV31EIDRG4

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply 3V ~ 3.6V
Type Driver
Supplier Device Package 16-SOIC
Series -
Protocol RS422, RS485
Package / Case 16-SOIC (0.154', 3.90mm Width)
Product Attribute Attribute Value
Package Tape & Reel (TR)
Operating Temperature -40°C ~ 85°C
Number of Drivers/Receivers 4/0
Mounting Type Surface Mount
Duplex -
Data Rate -
Base Product Number AM26LV31

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

AM26LV31EIDRG4 Image
AM26LV31EIDRG4 (1)

Manufacturer Part Number

AM26LV31EIDRG4

Manufacturer

Texas Instruments

Introduction

The AM26LV31EIDRG4 is a quad line driver for RS-422 and RS-485 interfaces. It is designed to provide high-speed, high-drive capability for industrial and commercial applications that require reliable data transmission over long distances.

Product Features and Performance

Quad line driver with four independent driver channels

Supports both RS-422 and RS-485 communication protocols

Operates from a single 3V to 3.6V power supply

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

Surface mount 16-SOIC package

High-speed operation with data rates up to 20Mbps

Differential output driver with ±60mA sink/source capability

Thermal shutdown and undervoltage lockout protection

Product Advantages

Robust RS-422/RS-485 interface with high-drive capability

Wide operating voltage and temperature range for diverse applications

Compact surface-mount package for space-constrained designs

Integrated protection features for reliable operation

Key Reasons to Choose This Product

Reliable high-speed data transmission over long cable runs

Versatile interface support for RS-422 and RS-485 systems

Power-efficient operation from a single 3V to 3.6V supply

Rugged design for industrial and harsh environment applications

Quality and Safety Features

Thermal shutdown and undervoltage lockout protection

Robust ESD protection on all pins

Compatibility

The AM26LV31EIDRG4 is compatible with a wide range of RS-422 and RS-485 communication systems and devices.

Application Areas

Industrial automation and control systems

Programmable logic controllers (PLCs)

Building automation and HVAC systems

Transportation and traffic control systems

Serial communication interfaces in various electronic devices

Product Lifecycle

The AM26LV31EIDRG4 is a discontinued product. Texas Instruments offers several alternative and equivalent models that can be considered, such as the AM26LV31E, AM26LV32E, and AM26LV33E. Customers are advised to contact our website's sales team for more information on available options and product support.

Frequently Asked Questions(FAQ)

What are the key electrical characteristics of the AM26LV31EIDRG4 that make it suitable for industrial RS-485 communication systems operating in noisy environments?
The AM26LV31EIDRG4 features a 3V to 3.6V supply voltage range, which aligns with modern low-power industrial control systems while maintaining compatibility with existing 3.3V logic levels. Its RS-485 protocol support enables differential signaling over multi-drop networks, providing inherent noise immunity through common-mode rejection. With four independent transmitters and no receivers in this configuration, it supports full-duplex communication across twisted-pair cables up to 40 meters at data rates up to 10 Mbps, making it ideal for distributed sensor networks or motor control applications where electromagnetic interference is prevalent.
How does the AM26LV31EIDRG4 compare to alternative RS-485 transceivers like the MAX3031ECSE+T in terms of power consumption and ESD protection for battery-powered field devices?
While both the AM26LV31EIDRG4 and MAX3031ECSE+T operate at 3.3V, the Texas Instruments part typically consumes slightly higher quiescent current—around 1.5 mA compared to approximately 1.2 mA for the Maxim equivalent—due to its enhanced drive strength and integrated slew rate control. However, the AM26LV31EIDRG4 offers superior electrostatic discharge (ESD) protection up to ±15 kV HBM on the bus pins per IEC 61000-4-2, whereas the MAX3031 provides ±15 kV but only under specific test conditions. For battery-operated devices requiring long operational life, this difference becomes significant over time, though the TI variant may justify the trade-off with better real-world robustness in harsh installations.
Can the AM26LV31EIDRG4 be used in half-duplex RS-485 networks, and what modifications are required compared to full-duplex implementations?
Yes, the AM26LV31EIDRG4 can operate in half-duplex mode by tying the driver outputs together using a single differential pair and controlling transmit enable via a microcontroller GPIO pin. Unlike dedicated half-duplex devices with built-in direction control, this requires external coordination to prevent bus contention during direction transitions. The device’s high-impedance shutdown mode ensures minimal loading when inactive, supporting shared media topologies such as Modbus RTU networks. However, designers must implement proper turn-around delay management in firmware to avoid signal reflections or arbitration issues.
What are the thermal considerations when mounting the AM26LV31EIDRG4 in a densely populated PCB layout with limited airflow?
The AM26LV31EIDRG4 operates reliably from -40°C to +85°C junction temperature, but continuous operation near maximum data rates (e.g., 10 Mbps) generates measurable power dissipation due to switching losses in the output stage. In a typical 3.3V application drawing 1.5 mA quiescent current with 20% duty cycle transmission, power dissipation reaches approximately 15 mW, leading to a small temperature rise above ambient depending on copper area and layer stack. To maintain long-term reliability in compact designs, ensure adequate ground plane connectivity under the SOIC package and avoid routing high-speed signals adjacent to sensitive analog traces.
Is the AM26LV31EIDRG4 compatible with 5V-tolerant microcontrollers when interfaced directly without level shifting?
No, the AM26LV31EIDRG4 operates strictly within a 3V to 3.6V supply range and cannot tolerate 5V logic inputs directly. Applying more than 3.6V to any input pin risks damaging the internal ESD structures. When connecting to 5V MCU GPIOs, an external bidirectional level translator such as the TXS0108E or discrete MOSFET-based shifter is necessary. Alternatively, some MCUs offer open-drain outputs compatible with 3.3V pull-up rails, but even then, input thresholds must be verified against the AM26LV31EIDRG4’s VIH(min) of 0.7 × VCC (≈2.1V at 3.3V), ensuring safe interoperability.
How does the AM26LV31EIDRG4 handle bus contention if two drivers attempt to drive opposite states simultaneously?
The AM26LV31EIDRG4 includes internal short-circuit protection and high-impedance disable functionality, but it does not actively arbitrate between conflicting driver enables. If multiple transmitters are enabled concurrently on the same bus line, destructive currents flow until one driver dominates or the device trips its thermal protection. To prevent this, system design must enforce strict enable/disable sequencing using a central controller or dedicated bus arbitrator IC. Additionally, series termination resistors (typically 120Ω) help dampen voltage spikes during contention events, reducing stress on the components.
What are the recommended decoupling capacitor values and placement guidelines for stable operation of the AM26LV31EIDRG4?
A 0.1 µF ceramic capacitor should be placed as close as possible to the VCC and GND pins of the AM26LV31EIDRG4, preferably within 5 mm, to suppress high-frequency noise generated by the switching outputs. For improved bulk capacitance, a 1–10 µF tantalum or X5R/X7R MLCC can be added near the power entry point of the board. Avoid placing capacitors directly beneath the SOIC package due to potential via inductance; instead, use surface-mount pads aligned with the supply pins. This ensures effective bypassing of transient currents during fast edge transitions common in RS-485 signaling.
Can the AM26LV31EIDRG4 support hot-plugging applications, and what precautions should be taken to prevent damage?
Hot-plugging introduces significant risk due to inrush currents caused by parasitic capacitance on the bus lines charging through ESD diodes when a node is connected while powered. Although the AM26LV31EIDRG4 has robust ESD protection, repeated hot-plug events degrade junction reliability over time. To mitigate this, include a current-limiting resistor (typically 10–22 Ω) in series with each driver output and consider adding TVS diodes rated for ±15 V on the A/B lines. Additionally, enable drivers gradually using soft-start logic or delay transmission until bus voltages stabilize after insertion.
How does the AM26LV31EIDRG4 differ from the AM26LV31EIDR variant in terms of packaging and availability?
Both the AM26LV31EIDRG4 and AM26LV31EIDR share identical electrical specifications and functional behavior, but differ only in reel width and tape format during manufacturing. The "G4" suffix denotes a standard 13-inch reel compliant with JEDEC EIA481, facilitating automated pick-and-place assembly, while "DR" refers to the cut tape format for smaller production runs. From a design perspective, they are interchangeable, but sourcing strategies should account for preferred logistics channels based on expected volume and regional distributor inventory practices.
What is the impact of termination resistors on signal integrity when using the AM26LV31EIDRG4 over long cable runs?
Termination resistors (usually 120Ω) matched to the characteristic impedance of the twisted-pair cable eliminate reflections at the load end of the bus, preserving signal fidelity at high data rates. Without them, ringing and overshoot degrade eye diagrams, increasing bit error rates beyond acceptable limits—especially above 2–3 Mbps over 20+ meter spans. When using the AM26LV31EIDRG4, place termination at both ends of the main trunk line if stubs exceed 1/6 of the wavelength (~5 cm at 10 MHz). However, excessive termination (e.g., multiple parallel resistors) creates loading that reduces output swing and increases power consumption unnecessarily.
Are there any known limitations regarding common-mode voltage range when using the AM26LV31EIDRG4 in isolated measurement systems?
The AM26LV31EIDRG4 supports a common-mode voltage range of -7 V to +12 V on the A/B lines, which covers most non-isolated RS-485 deployments. However, in galvanically isolated systems where ground potentials drift significantly (e.g., > ±10 V), the device may enter undefined states or experience degraded performance due to internal comparator hysteresis thresholds being exceeded. For such cases, consider using an isolated transceiver module or optocoupler-based interface ICs like the AMC1301 combined with separate power supplies, as the AM26LV31EIDRG4 lacks built-in isolation and relies on external grounding schemes that may fail under large differential voltages.
What precautions should be taken when soldering the AM26LV31EIDRG4 to avoid damage during reflow profiling?
The AM26LV31EIDRG4 uses a lead-free SnAgCu solder finish and is compatible with standard lead-free reflow profiles (e.g., peak temperature 245°C ± 5°C). However, exceeding 260°C for more than 10 seconds risks delamination of the epoxy mold compound or bond wire lift-off. Ensure preheating ramps slowly (1–3°C/s) to minimize thermal shock, and maintain soak phase duration under 60 seconds. Post-reflow inspection should verify continuity and absence of cracks around the leads, especially if rework is anticipated. Always follow IPC-J-STD-001 guidelines for handling moisture-sensitive components, although MSL 1 allows unlimited storage time once dry.
How does the AM26LV31EIDRG4 perform in automotive-grade EMI compliance testing compared to industrial standards?
While the AM26LV31EIDRG4 meets industrial RS-485 requirements (IEC 61000-4-3, -4-4), it is not qualified to automotive specifications like ISO 11452-2 (radiated immunity) or CISPR 25 (conducted emissions). Its output drive strength and slew rate control help suppress harmonic content, but additional filtering (e.g., ferrite beads, RC snubbers) may still be needed in electrically noisy environments such as motor drives or variable frequency drives. Designers targeting automotive applications should select dedicated AEC-Q100 parts rather than repurposing industrial-grade devices without rigorous validation.
What role do enable pins play in preventing bus contention when integrating multiple AM26LV31EIDRG4 units on the same network?
Each channel of the AM26LV31EIDRG4 features an active-low enable input (DENx) that controls whether the corresponding driver is active or in high-impedance state. By asserting only one enable at a time via a centralized arbiter (such as a UART multiplexer), simultaneous driving is avoided. In multi-master systems, prioritize enables using daisy-chained logic or software handshaking protocols. Failure to coordinate enables results in shoot-through currents and potential latch-up conditions, even though the device includes internal clamps. Implement enable sequencing with guard times greater than the worst-case propagation delay (~50 ns) to ensure clean transitions.
Can the AM26LV31EIDRG4 replace the MAX3031ECSE+ in existing designs without modifying firmware or hardware?
Functionally, yes—both devices support similar voltage levels, data rates, and pin compatibility in 16-SOIC packages. However, subtle differences exist: the AM26LV31EIDRG4 has tighter propagation delay skew (±5 ns vs. ±10 ns) and lower quiescent current variability, which benefits synchronous systems. Yet, firmware relying on specific enable timing or fault detection behaviors tied to the MAX3031’s internal architecture might require adjustment. Physical layout parasitics (trace length, impedance mismatches) could also shift performance boundaries. Always validate interoperability under worst-case operating conditions before declaring drop-in replacement status.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments AM26LV31EIDRG4

Product Attribute AM26LV31EIRGYRG4 AM26LV31EIPWRG4 AM26LV31EIRGYR AM26LV31EIDR
Part Number AM26LV31EIRGYRG4 AM26LV31EIPWRG4 AM26LV31EIRGYR AM26LV31EIDR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Type - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Data Rate - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Voltage - Supply - - - -
Series - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Duplex - - - -
Protocol - - - -
Number of Drivers/Receivers - - - -

AM26LV31EIDRG4 Datasheet PDF

Download AM26LV31EIDRG4 pdf datasheets and Texas Instruments documentation for AM26LV31EIDRG4 - Texas Instruments.

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Customer Reviews

Evaluation: 10 Articles

  • 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.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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AM26LV31EIDRG4 Image

AM26LV31EIDRG4

Texas Instruments
32D-AM26LV31EIDRG4

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

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