MAX521ACWG Equivalent & Substitute Parts

Part Overview

The MAX521ACWG is an 8-bit Digital to Analog Converter (DAC) manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications requiring voltage output conversion. This component features an I2C data interface, external reference capability, and buffered voltage output in a 24-SOIC surface mount package.

The MAX521ACWG is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support legacy system maintenance or redesign initiatives.

Substiute Parts

MAX521ACWG

Analog Devices Inc./Maxim IntegratedIn Stock: 2685MAX521ACWG Datasheet

Current PartRFQ

MAX521ACWG+

Analog Devices Inc./Maxim IntegratedIn Stock: 1186MAX521ACWG+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX521ACWG is determined by strict equivalence across the following critical parameters:

• Resolution & Converter Count: 8-bit resolution with 8 D/A converters
• Output Characteristics: Buffered voltage output with external reference capability
• Interface Protocol: I2C digital data interface
• Supply Voltage Requirements: 5V analog and digital supply
• Accuracy Specifications: INL/DNL performance of ±1.5 LSB (Max) and ±1 LSB (Max)
• Settling Time: 6µs typical response time
• Package Compatibility: 24-SOIC surface mount package with identical pinout and mechanical dimensions
• Architecture: R-2R ladder network topology

The MAX521ACWG+ qualifies as a direct substitute based on complete parameter alignment across all electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The MAX521ACWG+ is the direct substitute for the MAX521ACWG. Both components share identical electrical specifications, pinout, and package dimensions, ensuring drop-in compatibility at the circuit board level.

The primary distinction between these parts is product lifecycle status and regulatory compliance:

• MAX521ACWG: Obsolete product status; RoHS non-compliant
• MAX521ACWG+: Active product status; ROHS3 compliant

For new designs or system redesigns, the MAX521ACWG+ is the appropriate selection due to its active manufacturing status and compliance with current RoHS3 regulations. For legacy system maintenance requiring exact part matching, the MAX521ACWG remains functionally equivalent where supply permits.

Both components maintain REACH Unaffected status and EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can MAX521ACWG+ replace MAX521ACWG in existing designs?

A: Yes. The MAX521ACWG+ is a direct substitute with identical electrical performance, pinout, and 24-SOIC package dimensions. No circuit modifications are required.

Q: What is the difference between MAX521ACWG and MAX521ACWG+?

A: The components are electrically and mechanically identical. The primary differences are product status (obsolete vs. active) and regulatory compliance (RoHS non-compliant vs. ROHS3 compliant). The "+" designation indicates the active, compliant variant.

Q: Are there any package or pinout differences?

A: No. Both parts use the 24-SOIC (0.295", 7.50mm Width) surface mount package with identical pinout and mechanical specifications.

Q: What supply voltages are required?

A: Both the analog and digital supply voltages are 5V for both components.

Q: What is the I2C interface compatibility?

A: Both MAX521ACWG and MAX521ACWG+ use I2C as the digital data interface with external reference capability, ensuring protocol compatibility in systems designed for either variant.

Q: Are there temperature range considerations for substitution?

A: Both components operate across the identical temperature range of 0°C to 70°C, with no thermal performance differences.