MAX994ESD Equivalent & Substitute Parts

Part Overview

The MAX994ESD is a general-purpose CMOS comparator with open-drain, rail-to-rail output and TTL compatibility, housed in a 14-SOIC surface-mount package. This device is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The MAX994ESD+ serves as the direct active substitute, maintaining identical electrical specifications while offering improved availability and active product support.

Substiute Parts

MAX994ESD

Analog Devices Inc./Maxim IntegratedIn Stock: 25020MAX994ESD Datasheet

Current PartRFQ

MAX994ESD+

Analog Devices Inc./Maxim IntegratedIn Stock: 1181MAX994ESD+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX994ESD with the MAX994ESD+ is based on strict electrical and mechanical parameter equivalence. Both parts share identical specifications across all critical performance criteria:

• Electrical Performance: Identical voltage supply ranges, input offset voltage, input bias current, quiescent current, CMRR, PSRR, propagation delay, and hysteresis characteristics
• Functional Configuration: Both contain 4 general-purpose comparator elements with identical output type (CMOS, open-drain, rail-to-rail, TTL)
• Package Compatibility: Both use 14-SOIC surface-mount packaging with identical physical dimensions (0.154", 3.90mm width)
• Environmental Specifications: Identical operating temperature range (-40°C ~ 85°C) and moisture sensitivity level (MSL 1)
• Compliance: Both are ROHS3 compliant

The primary distinction is product status: MAX994ESD is obsolete, while MAX994ESD+ is active, making the latter the recommended substitute for new designs and ongoing production.

Parameter Comparison

Engineering Selection Recommendations

The MAX994ESD+ is the direct substitute for the obsolete MAX994ESD. Both parts are ROHS3 compliant and carry MSL 1 rating, indicating no moisture sensitivity restrictions. Selection between these parts is determined by product status and availability:

• For new designs and active production: Use MAX994ESD+ (active product status, improved supply chain availability)
• For legacy system maintenance: MAX994ESD+ provides identical electrical and mechanical compatibility with the original obsolete part
• Compliance considerations: Both parts meet ROHS3 requirements and carry identical environmental certifications

No electrical redesign or circuit modification is required when substituting MAX994ESD with MAX994ESD+.

Frequently Asked Questions (FAQ)

Q: Are MAX994ESD and MAX994ESD+ pin-compatible? A: Yes. Both parts use identical 14-SOIC packaging with the same physical dimensions (0.154", 3.90mm width) and surface-mount configuration. Direct PCB substitution is possible without layout modifications.

Q: What is the difference between MAX994ESD and MAX994ESD+? A: The parts are electrically and mechanically identical. The primary difference is product status: MAX994ESD is obsolete, while MAX994ESD+ is active. The "+" designation and tube packaging format indicate the active variant.

Q: Can I use MAX994ESD+ in place of MAX994ESD in existing designs? A: Yes. All electrical specifications, operating parameters, and environmental ratings are identical. No circuit modifications are required.

Q: Are there any compliance or certification differences? A: No. Both parts carry identical ROHS3 compliance and MSL 1 moisture sensitivity ratings.

Q: What packaging formats are available? A: MAX994ESD is available in standard packaging, while MAX994ESD+ is supplied in tube format. Both use the same 14-SOIC case.

Q: Is the MAX994ESD+ suitable for high-reliability applications? A: Suitability depends on application-specific requirements. Both parts share identical electrical specifications and environmental ratings. Consult application requirements and qualification standards for your specific use case.