SC2903VDR2G Equivalent & Substitute Parts

Part Overview

The SC2903VDR2G is a dual general-purpose comparator IC manufactured by onsemi in 8-SOIC surface mount packaging. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The comparator supports multiple logic families (CMOS, DTL, ECL, MOS, TTL) with a supply voltage range of 2V to 36V, making it suitable for automotive-grade applications with AEC-Q100 qualification.

Substiute Parts

SC2903VDR2G

onsemiIn Stock: 832SC2903VDR2G Datasheet

Current PartRFQ

NCV2903DR2G

onsemiIn Stock: 145254NCV2903DR2G Datasheet

MFR RecommendedRFQ

MAX922CSA+

Analog Devices Inc./Maxim IntegratedIn Stock: 3752MAX922CSA+ Datasheet

SimilarRFQ

MAX922ESA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 7072MAX922ESA+T Datasheet

SimilarRFQ

TS393CS RLG

Taiwan Semiconductor CorporationIn Stock: 5385TS393CS RLG Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC2903VDR2G is determined by the following critical parameters:

• Package compatibility: 8-SOIC surface mount form factor (0.154", 3.90mm width)
• Functional equivalence: Dual general-purpose comparator with 2 elements
• Supply voltage range: Minimum 2V ~ 36V support for single supply or equivalent dual supply range
• Output logic family support: CMOS and TTL output capability at minimum
• Automotive qualification: AEC-Q100 certification required for automotive applications
• RoHS compliance: ROHS3 compliant status

Substitute parts are grouped into two categories:

MFR Recommended Substitute: NCV2903DR2G (onsemi) — Direct manufacturer alternative with active product status, expanded output type support, and enhanced electrical specifications.

Similar Substitutes: MAX922CSA+, MAX922ESA+T (Analog Devices Inc./Maxim Integrated), and TS393CS RLG (Taiwan Semiconductor Corporation) — Functionally equivalent devices with compatible packaging and supply voltage ranges, though with different operating temperature ranges and electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

For automotive applications requiring AEC-Q100 qualification: NCV2903DR2G is the primary substitute. This onsemi device maintains automotive-grade status with AEC-Q100 qualification, active product status, and identical 8-SOIC packaging. The NCV2903DR2G supports the full 2V ~ 36V supply range with enhanced specifications including specified propagation delay (1.3µs) and quiescent current (2.5mA).

For general-purpose applications without automotive requirements: MAX922ESA+T or MAX922CSA+ are suitable alternatives. Both devices support CMOS and TTL output types with 8-SOIC packaging. MAX922ESA+T extends the operating temperature range to -40°C ~ 85°C compared to MAX922CSA+ (0°C ~ 70°C), providing broader environmental coverage. However, both devices limit supply voltage to 2.5V ~ 11V single supply, which is narrower than the original SC2903VDR2G specification.

For applications requiring extended supply voltage range: TS393CS RLG maintains the 2V ~ 36V supply voltage capability with superior input offset voltage (2mV @ 5V) and lower input bias current (0.025µA). However, this device operates within 0°C ~ 70°C temperature range and carries MSL 3 moisture sensitivity classification, requiring controlled storage conditions.

All substitute parts maintain ROHS3 compliance and 8-SOIC surface mount packaging compatibility with the original SC2903VDR2G.

Frequently Asked Questions (FAQ)

Q: Can NCV2903DR2G directly replace SC2903VDR2G in automotive applications?

A: Yes. NCV2903DR2G is the manufacturer-recommended substitute with identical automotive-grade classification and AEC-Q100 qualification. Both devices support 2V ~ 36V supply voltage and 8-SOIC packaging. The NCV2903DR2G has active product status, ensuring long-term availability.

Q: What is the key difference between NCV2903DR2G and MAX922ESA+T?

A: NCV2903DR2G maintains automotive qualification (AEC-Q100) and supports 2V ~ 36V supply voltage. MAX922ESA+T is a general-purpose device with narrower supply voltage range (2.5V ~ 11V) and lacks automotive certification. MAX922ESA+T offers extended operating temperature range (-40°C ~ 85°C) suitable for industrial applications.

Q: Are MAX922CSA+ and MAX922ESA+T interchangeable?

A: Both are functionally equivalent dual comparators in 8-SOIC packaging with identical electrical specifications. The primary difference is packaging format (MAX922CSA+ in Tube, MAX922ESA+T in Tape & Reel) and operating temperature range (MAX922CSA+: 0°C ~ 70°C; MAX922ESA+T: -40°C ~ 85°C). Selection depends on temperature requirements and packaging logistics.

Q: Why does TS393CS RLG have MSL 3 classification while others have MSL 1?

A: MSL (Moisture Sensitivity Level) indicates moisture absorption risk during storage. MSL 1 (Unlimited) allows indefinite shelf storage without baking. MSL 3 (168 Hours) requires controlled humidity storage and baking before reflow soldering. TS393CS RLG requires stricter handling procedures compared to other substitutes.

Q: Can I use MAX922CSA+ in a design requiring -40°C operation?

A: No. MAX922CSA+ operates within 0°C ~ 70°C range. For extended low-temperature operation, use NCV2903DR2G (-40°C ~ 125°C) or MAX922ESA+T (-40°C ~ 85°C).

Q: What supply voltage range should I verify when selecting a substitute?

A: Verify your circuit's supply voltage requirement against the substitute's rated range. SC2903VDR2G supports 2V ~ 36V. NCV2903DR2G and TS393CS RLG maintain this range. MAX922 series devices limit operation to 2.5V ~ 11V, which may not be suitable for designs requiring extended voltage operation.