RS8901XF Equivalent & Substitute Parts

Part Overview

The RS8901XF is a single-channel CMOS comparator in SOT-23-5 surface mount packaging, manufactured by Runic Technology. This linear integrated circuit provides rail-to-rail output capability with push-pull configuration, designed for applications requiring precision voltage comparison across a wide supply voltage range. The device is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when inventory constraints, procurement lead times, or manufacturing discontinuation necessitate alternative component selection while maintaining electrical and mechanical compatibility.

Substiute Parts

RS8901XF

Runic TechnologyIn Stock: 39842RS8901XF Datasheet

Current PartRFQ

RS8907XF

Runic TechnologyIn Stock: 6386RS8907XF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RS8901XF is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part RS8907XF qualifies as a parametric equivalent based on the following criteria:

Electrical Parameter Equivalence:

• Identical supply voltage operating range (1.4V to 5.5V)
• Matching input offset voltage specification (3mV maximum at 5V)
• Identical input bias current rating (10pA maximum at 5.5V)
• Equivalent output current capability (42mA typical at 5V)
• Matching quiescent current specification (1.5µA maximum)
• Identical CMRR and PSRR performance (70dB each)
• Matching propagation delay characteristic (13µs typical)
• Identical operating temperature range (-40°C to 125°C)

Mechanical and Packaging Equivalence:

• Identical package type: SOT-23-5 (SC-74A)
• Surface mount mounting type
• Single comparator element configuration
• Identical output type: CMOS push-pull rail-to-rail

Compliance and Regulatory Equivalence:

• RoHS3 compliant status
• REACH unaffected designation
• Identical moisture sensitivity level (MSL 3, 168 hours)
• Matching ECCN and HTSUS classifications

Parameter Comparison

Engineering Selection Recommendations

The RS8907XF is a direct parametric equivalent to the RS8901XF and qualifies for substitution in all applications where the primary part is specified. Both devices maintain identical electrical performance across all measured parameters, including supply voltage range, input offset voltage, bias current, output current capability, and propagation delay characteristics.

Both parts carry Active product status, indicating ongoing manufacturer support and availability. Regulatory compliance is equivalent, with both devices meeting RoHS3 requirements and maintaining REACH unaffected status. Moisture sensitivity ratings are identical, ensuring equivalent handling and storage requirements during manufacturing and assembly operations.

The mechanical compatibility is complete: both devices utilize the SOT-23-5 package in surface mount configuration, enabling direct substitution on printed circuit boards without layout modifications or rework. Pin configuration and electrical interface characteristics are identical.

Selection between RS8901XF and RS8907XF should be based on procurement availability, lead time requirements, and inventory status rather than electrical or mechanical considerations. Current inventory levels show RS8901XF at 39,741 pieces and RS8907XF at 6,300 pieces, which may influence sourcing decisions based on project volume and delivery timeline requirements.

Frequently Asked Questions (FAQ)

Q: Can RS8907XF be used as a direct replacement for RS8901XF in existing designs?

A: Yes. The RS8907XF is a parametric equivalent with identical electrical specifications, output characteristics, and package configuration. No circuit modifications, PCB layout changes, or firmware adjustments are required for substitution.

Q: Are the pin configurations identical between RS8901XF and RS8907XF?

A: Yes. Both devices use the SOT-23-5 package (SC-74A designation) with identical pin assignments. Direct pin-for-pin substitution is supported.

Q: Do both parts have the same supply voltage operating range?

A: Yes. Both RS8901XF and RS8907XF operate across the identical supply voltage range of 1.4V to 5.5V, supporting single supply and dual supply configurations within this range.

Q: What is the difference in propagation delay between these parts?

A: There is no difference. Both devices specify a maximum propagation delay of 13µs (typical), ensuring equivalent timing performance in comparator applications.

Q: Are moisture sensitivity requirements the same for both parts?

A: Yes. Both devices carry MSL rating 3 with a 168-hour floor life specification, requiring identical handling, storage, and reflow procedures during assembly.

Q: Can these parts be used interchangeably in high-temperature applications?

A: Yes. Both devices support the identical operating temperature range of -40°C to 125°C, enabling interchangeable use across the full specified temperature envelope.

Q: Are there any compliance or regulatory differences between RS8901XF and RS8907XF?

A: No. Both parts are RoHS3 compliant, REACH unaffected, and carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What output current capability should be expected from either part?

A: Both devices deliver 42mA typical output current at 5V supply, providing equivalent drive capability for connected load circuits.

Q: Is the input offset voltage specification identical for both parts?

A: Yes. Both RS8901XF and RS8907XF specify a maximum input offset voltage of 3mV at 5V supply, ensuring equivalent precision in voltage comparison applications.

Q: Can these parts be used in tape and reel packaging for automated assembly?

A: Yes. Both devices are supplied in Tape & Reel (TR) packaging format, supporting standard pick-and-place assembly equipment and processes.