DG538ADN-E3 Equivalent & Substitute Parts

Part Overview

The DG538ADN-E3 is an ultrasound and video switch IC manufactured by Vishay Siliconix, featuring a 4:1 multiplexer/demultiplexer circuit with 2 channels in a 28-PLCC package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across a single supply voltage range of 10V to 21V with an on-state resistance maximum of 90Ohm and supports applications requiring video and ultrasound signal switching.

Substiute Parts

DG538ADN-E3

Vishay SiliconixIn Stock: 959DG538ADN-E3 Datasheet

Current PartRFQ

DG4051EEN-T1-GE4

Vishay SiliconixIn Stock: 49703DG4051EEN-T1-GE4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DG538ADN-E3 is determined by the following critical parameters:

• Multiplexer/Demultiplexer Configuration: The substitute must support equivalent or superior switching architecture (4:1 or higher)
• On-State Resistance: The substitute maximum on-state resistance must not exceed the original specification to maintain signal integrity
• Supply Voltage Compatibility: The substitute must operate within or encompass the original supply voltage range (10V ~ 21V)
• Bandwidth Performance: The substitute must meet or exceed the -3dB bandwidth requirement (500MHz)
• Operating Temperature Range: The substitute must support the full operating temperature range (-40°C ~ 85°C)
• Compliance & Certifications: RoHS3 compliance and MSL rating must be maintained
• Manufacturer Continuity: Parts from the same manufacturer (Vishay Siliconix) ensure design consistency and support continuity

The DG4051EEN-T1-GE4 qualifies as a manufacturer-recommended substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

The DG4051EEN-T1-GE4 is the manufacturer-recommended substitute for the obsolete DG538ADN-E3. Both components maintain ROHS3 compliance and MSL Level 1 ratings, ensuring regulatory and environmental compatibility.

The substitute offers superior on-state resistance (78Ohm versus 90Ohm), reducing signal loss and improving performance. The extended operating temperature range (-40°C ~ 125°C versus -40°C ~ 85°C) provides additional thermal margin for demanding applications.

The DG4051EEN-T1-GE4 features an 8:1 multiplexer configuration compared to the original 4:1 design, offering greater switching flexibility. However, the -3dB bandwidth of 308MHz is lower than the original 500MHz specification. This reduction must be evaluated against specific application requirements for ultrasound and video signal switching.

The package transition from 28-LCC to 16-miniQFN requires PCB layout redesign. The substitute supports both single supply (3V ~ 16V) and dual supply (±3V ~ 8V) operation, providing design flexibility not available in the original part.

Frequently Asked Questions (FAQ)

Q: Can the DG4051EEN-T1-GE4 directly replace the DG538ADN-E3 without circuit modifications?

A: Direct pin-for-pin replacement is not possible due to different package types (28-LCC versus 16-miniQFN) and pin configurations. Circuit redesign and PCB layout modification are required. However, the functional switching capability is preserved through equivalent multiplexer operation.

Q: What is the impact of the lower -3dB bandwidth (308MHz versus 500MHz) on video and ultrasound applications?

A: The bandwidth reduction must be evaluated against specific application frequency requirements. For ultrasound applications operating below 308MHz and video signals within this bandwidth, the substitute performs equivalently. Applications requiring the full 500MHz bandwidth may require alternative solutions.

Q: Does the DG4051EEN-T1-GE4 support the original 10V ~ 21V supply voltage range?

A: The substitute supports single supply operation from 3V ~ 16V, which does not fully encompass the original 10V ~ 21V range. Designs operating above 16V require circuit modification or alternative substitutes. The dual supply option (±3V ~ 8V) provides an alternative for bipolar supply architectures.

Q: Are there inventory and lead-time advantages to using the DG4051EEN-T1-GE4?

A: The DG4051EEN-T1-GE4 is classified as Active product status with 49,625 pieces in stock, compared to the obsolete DG538ADN-E3 with limited remaining inventory (855 pieces). The substitute ensures long-term availability and supply chain continuity.

Q: What are the compliance and certification implications of this substitution?

A: Both components maintain ROHS3 compliance, MSL Level 1 rating, REACH Unaffected status, and EAR99 ECCN classification. No compliance degradation occurs with this substitution.