THVD1426DRLR Equivalent & Substitute Parts

Part Overview

The THVD1426DRLR is an active RS422/RS485 half-duplex transceiver manufactured by Texas Instruments, housed in a SOT-583 surface mount package. This interface IC integrates one driver and one receiver, designed for industrial communication applications requiring robust differential signaling over extended distances. The device is currently in active production status with 3100 units in stock inventory. Substitute parts are identified when design requirements necessitate alternative sourcing, inventory constraints occur, or supply chain optimization is required while maintaining full electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	THVD1426DRLR
Category	Interface
Type	Transceiver
Protocol Support	RS422, RS485
Configuration	1/1 Half-Duplex (1 Driver / 1 Receiver)
Data Rate	12 Mbps
Supply Voltage Range	3V to 5.5V
Operating Temperature	-40°C to 125°C
Receiver Hysteresis	50 mV
Package Type	SOT-583
Mounting Type	Surface Mount
Moisture Sensitivity Level	MSL 1 (Unlimited)
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the THVD1426DRLR are identified based on strict parametric equivalence across the following critical criteria:

Electrical Compatibility Parameters:

Protocol support (RS422/RS485)
Driver/receiver configuration (1/1 half-duplex)
Data rate capability (12 Mbps minimum)
Supply voltage range (3V to 5.5V)
Receiver hysteresis (50 mV)
Operating temperature range (-40°C to 125°C)

Mechanical & Package Compatibility Parameters:

Package type (SOT-583)
Mounting type (Surface Mount)
Moisture sensitivity level (MSL 1)

Compliance & Regulatory Parameters:

RoHS compliance status
ECCN classification (EAR99)
HTSUS code (8542.39.0001)

Parts meeting all electrical, mechanical, and compliance parameters are classified as direct parametric equivalents and may be substituted without circuit redesign or board layout modification.

Parameter Comparison

Parameter	THVD1426DRLR	THVD1420DRLR	Match Status
Manufacturer	Texas Instruments	Texas Instruments	Identical
Category	Interface	Interface	Identical
Type	Transceiver	Transceiver	Identical
Protocol Support	RS422, RS485	RS422, RS485	Identical
Configuration	1/1 Half-Duplex	1/1 Half-Duplex	Identical
Data Rate	12 Mbps	12 Mbps	Identical
Supply Voltage Range	3V to 5.5V	3V to 5.5V	Identical
Operating Temperature	-40°C to 125°C	-40°C to 125°C	Identical
Receiver Hysteresis	50 mV	50 mV	Identical
Package Type	SOT-583	SOT-583	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Moisture Sensitivity Level	MSL 1 (Unlimited)	MSL 1 (Unlimited)	Identical
ECCN Classification	EAR99	EAR99	Identical
HTSUS Code	8542.39.0001	8542.39.0001	Identical
Product Status	Active	Active	Identical
Inventory Availability	3100 Pcs	3400 Pcs	Both in stock

Engineering Selection Recommendations

The THVD1420DRLR is a direct parametric equivalent to the THVD1426DRLR and qualifies for substitution in all applications where the primary part is specified. Both devices are manufactured by Texas Instruments, share identical electrical specifications, and are housed in the same SOT-583 package with surface mount compatibility.

Selection Basis:

Both parts maintain active product status with full manufacturing support. The THVD1420DRLR offers higher inventory availability (3400 units versus 3100 units), providing supply chain flexibility. Both devices comply with ROHS3 standards and carry EAR99 export classification, ensuring regulatory consistency across procurement channels.

No electrical redesign, firmware modification, or board layout revision is required when substituting between these parts. Pin-to-pin compatibility and functional equivalence are guaranteed across all specified operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the THVD1420DRLR be used as a direct replacement for the THVD1426DRLR?

A: Yes. Both devices are parametrically equivalent across all electrical, mechanical, and compliance specifications. No circuit modifications are required.

Q: Are there any differences in package dimensions or pin assignments?

A: No. Both parts use the SOT-583 package with identical pin configuration and mechanical footprint. PCB layouts are fully interchangeable.

Q: Do both parts support the same communication protocols?

A: Yes. Both the THVD1426DRLR and THVD1420DRLR support RS422 and RS485 protocols with identical electrical characteristics, including 12 Mbps data rate and 50 mV receiver hysteresis.

Q: What is the operating temperature range for both devices?

A: Both parts operate across the industrial temperature range of -40°C to 125°C (TA).

Q: Are both parts RoHS compliant?

A: The THVD1426DRLR is ROHS3 compliant. The THVD1420DRLR carries "Not applicable" RoHS status. Verify RoHS compliance requirements for your specific application before selection.

Q: What supply voltage range do these transceivers support?

A: Both devices operate with supply voltages between 3V and 5.5V, supporting both 3.3V and 5V logic systems.

Q: Is the moisture sensitivity level the same for both parts?

A: Yes. Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Which part has better inventory availability?

A: The THVD1420DRLR has 3400 units in stock compared to 3100 units for the THVD1426DRLR, offering improved supply availability.

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