MAX993EUD Equivalent & Substitute Parts

Part Overview

The MAX993EUD is a general-purpose CMOS comparator with push-pull, rail-to-rail, and TTL output capabilities, housed in a 14-TSSOP surface-mount package. This device features four independent comparator elements suitable for signal conditioning and threshold detection applications. The MAX993EUD is currently listed as obsolete, making equivalent substitute parts necessary for ongoing production and design updates. Substitute parts must maintain functional equivalence across electrical performance, package compatibility, and output characteristics.

Substiute Parts

MAX993EUD

Analog Devices Inc./Maxim IntegratedIn Stock: 870MAX993EUD Datasheet

Current PartRFQ

MAX993EUD+

Analog Devices Inc./Maxim IntegratedIn Stock: 2125MAX993EUD+ Datasheet

DirectRFQ

TLV3704CPW

Texas InstrumentsIn Stock: 2383TLV3704CPW Datasheet

MFR RecommendedRFQ

TLV3704IPW

Texas InstrumentsIn Stock: 3013TLV3704IPW Datasheet

MFR RecommendedRFQ

TLV3704IPWR

Texas InstrumentsIn Stock: 3360TLV3704IPWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX993EUD is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the 14-TSSOP surface-mount package with identical 0.173" (4.40mm) width to ensure PCB layout compatibility without redesign.

Functional Elements: All candidates must provide four independent comparator elements to maintain circuit functionality.

Output Configuration: Substitute parts must support CMOS and push-pull output types. Rail-to-rail capability is required for low-voltage applications.

Supply Voltage Range: The substitute must operate within or exceed the 2.5V ~ 5.5V single supply range and ±1.25V ~ 2.75V dual supply range of the original part.

Electrical Performance: Input offset voltage, input bias current, quiescent current, and propagation delay characteristics must be compatible with the original design specifications.

Compliance & Certifications: RoHS3 compliance and MSL Level 1 rating are mandatory for production environments.

Based on these criteria, the following parts qualify as direct substitutes:

• MAX993EUD+ (Analog Devices Inc./Maxim Integrated) — Direct electrical and packaging equivalent with active product status
• TLV3704IPW (Texas Instruments) — Functional equivalent with extended supply voltage range and industrial temperature rating
• TLV3704IPWR (Texas Instruments) — Functional equivalent with extended supply voltage range, industrial temperature rating, and active product status
• TLV3704CPW (Texas Instruments) — Functional equivalent with extended supply voltage range and commercial temperature rating

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Manufacturer): MAX993EUD+ is the primary substitute, offering identical electrical specifications and package configuration. This part carries active product status, ensuring long-term availability and supply chain stability. Selection of MAX993EUD+ eliminates any design verification requirements.

For Extended Supply Voltage Applications: TLV3704IPWR is the recommended choice for designs requiring operation beyond 5.5V single supply or ±2.75V dual supply. This part supports up to 16V single supply and ±8V dual supply while maintaining the 14-TSSOP package footprint. TLV3704IPWR carries active product status and industrial temperature rating (-40°C ~ 125°C), providing extended operational range compared to the original MAX993EUD.

For Commercial Temperature Range Applications: TLV3704CPW operates within 0°C ~ 70°C and is suitable for non-industrial environments. This part is obsolete and should be selected only when inventory is available and long-term supply is not a concern.

For Industrial Temperature Range with Obsolete Status: TLV3704IPW provides -40°C ~ 125°C operation but carries obsolete product status. This part should be considered only when TLV3704IPWR is unavailable.

All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, meeting production and environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX993EUD+ be used as a direct drop-in replacement for MAX993EUD?

A: Yes. MAX993EUD+ is electrically and mechanically identical to MAX993EUD, with the same supply voltage range (2.5V ~ 5.5V single, ±1.25V ~ 2.75V dual), input offset voltage (5mV @ 5.5V), quiescent current (24µA), propagation delay (450ns), and 14-TSSOP package. The primary difference is product status: MAX993EUD+ is active, while MAX993EUD is obsolete.

Q: What are the key differences between MAX993EUD and TLV3704 series parts?

A: The TLV3704 series (TLV3704CPW, TLV3704IPW, TLV3704IPWR) from Texas Instruments supports extended supply voltage ranges (2.5V ~ 16V single, ±1.25V ~ 8V dual) compared to MAX993EUD (2.5V ~ 5.5V single, ±1.25V ~ 2.75V dual). TLV3704 parts feature lower quiescent current (1µA vs. 24µA) and higher PSRR (105dB vs. 80dB). Input bias current is higher in TLV3704 (250pA @ 15V vs. 1pA @ 5.5V). All parts maintain the 14-TSSOP package and four-element comparator configuration.

Q: Which substitute part should I select for new designs?

A: TLV3704IPWR is the recommended choice for new designs. It carries active product status, supports extended supply voltage range (2.5V ~ 16V), operates across industrial temperature range (-40°C ~ 125°C), and is available in Cut Tape and Digi-Reel packaging for production volumes. This part ensures long-term supply availability and design flexibility.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts use the 14-TSSOP surface-mount package with 0.173" (4.40mm) width, ensuring identical PCB footprint and no layout redesign requirements.

Q: What is the impact of higher input bias current in TLV3704 parts?

A: TLV3704 series parts specify 250pA input bias current at 15V, compared to 1pA for MAX993EUD at 5.5V. In applications with high-impedance input sources, this difference may require input biasing network adjustments. For standard comparator applications with low-impedance sources, this difference is not significant.

Q: Can TLV3704CPW be used in industrial temperature applications?

A: No. TLV3704CPW operates only within 0°C ~ 70°C commercial temperature range and is not suitable for industrial applications requiring -40°C ~ 125°C operation. Use TLV3704IPW or TLV3704IPWR for industrial temperature requirements.

Q: What is the significance of product status (Active vs. Obsolete)?

A: Active product status indicates ongoing manufacturer support, guaranteed long-term availability, and continued production. Obsolete status indicates the part is no longer manufactured and available only from existing inventory. For new designs and long-term production, active parts (MAX993EUD+ or TLV3704IPWR) are strongly preferred.