DS4520E Equivalent & Substitute Parts

Part Overview

The DS4520E is an I/O Expander interface circuit manufactured by Analog Devices Inc./Maxim Integrated. This device provides 9 I/O lines with I2C communication at 400 kHz, packaged in a 16-TSSOP surface mount configuration. The DS4520E is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations. The availability of active product variants ensures continued access to functionally equivalent solutions.

Substiute Parts

DS4520E

Analog Devices Inc./Maxim IntegratedIn Stock: 2505DS4520E Datasheet

Current PartRFQ

DS4520E+

Analog Devices Inc./Maxim IntegratedIn Stock: 2439DS4520E+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS4520E is determined by strict equivalence across the following critical parameters:

• I/O Configuration: 9 I/O lines
• Communication Protocol: I2C at 400 kHz
• Electrical Characteristics: Open drain output, 12 mA source/sink capability, 2.7V–5.5V supply range
• Thermal Performance: -40°C to 85°C operating range
• Physical Form Factor: 16-TSSOP surface mount package
• Functional Features: EEPROM and Power-On Reset (POR) capability

The DS4520E+ meets all these criteria and is therefore classified as a direct substitute. Both parts share identical electrical specifications, package geometry, and functional feature sets. The primary distinction is product lifecycle status: DS4520E is obsolete while DS4520E+ is active.

Parameter Comparison

Engineering Selection Recommendations

The DS4520E+ is the direct substitute for the DS4520E. Both components are functionally and electrically identical across all specified parameters. Selection between these parts is determined by regulatory and compliance requirements:

DS4520E: Use only in applications where RoHS non-compliance is acceptable and existing inventory must be consumed. Product status is obsolete; new procurement is not recommended.

DS4520E+: Recommended for all new designs and ongoing production. This variant is active and compliant with ROHS3 standards, ensuring regulatory alignment and long-term supply chain viability. Identical electrical and mechanical specifications ensure drop-in compatibility with existing DS4520E designs.

Frequently Asked Questions (FAQ)

Q: Can DS4520E+ replace DS4520E in existing designs? A: Yes. The DS4520E+ is electrically and mechanically identical to the DS4520E. Pin configuration, package dimensions, electrical characteristics, and functional features are equivalent. Direct substitution is possible without circuit modification.

Q: What is the difference between DS4520E and DS4520E+? A: The primary differences are product lifecycle status and RoHS compliance. DS4520E is obsolete and RoHS non-compliant. DS4520E+ is active and ROHS3 compliant. All electrical and functional specifications are identical.

Q: Are there any package or pinout differences? A: No. Both parts use the 16-TSSOP package with identical pin assignments and physical dimensions (0.173" width, 4.40mm).

Q: What I/O count does the DS4520E provide? A: The DS4520E provides 9 I/O lines accessible via I2C interface at 400 kHz clock frequency.

Q: What is the supply voltage range? A: Both DS4520E and DS4520E+ operate across 2.7V to 5.5V supply range, supporting both 3.3V and 5V logic systems.

Q: Does this device support interrupt output? A: No. The DS4520E and DS4520E+ do not include interrupt output capability.

Q: What features are included? A: Both variants include EEPROM storage and Power-On Reset (POR) functionality.