MAX922CSA Equivalent & Substitute Parts

Part Overview

The MAX922CSA is a general-purpose dual comparator IC manufactured by Analog Devices Inc./Maxim Integrated in 8-SOIC surface mount packaging. This part is classified as obsolete, though 3800 units remain in stock as new original inventory. The MAX922CSA operates with dual supply voltages (±1.25V ~ 5.5V) or single supply (2.5V ~ 11V) and delivers CMOS/TTL output logic levels suitable for signal conditioning and threshold detection applications.

Due to the obsolete product status, equivalent and substitute parts are necessary to ensure design continuity, long-term supply chain reliability, and access to active production alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

MAX922CSA

Analog Devices Inc./Maxim IntegratedIn Stock: 3896MAX922CSA Datasheet

Current PartRFQ

MAX922CSA+

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

DirectRFQ

LTC1441CS8#PBF

Analog Devices Inc.In Stock: 1381LTC1441CS8#PBF Datasheet

MFR RecommendedRFQ

LTC1441CS8#TRPBF

Analog Devices Inc.In Stock: 890LTC1441CS8#TRPBF Datasheet

MFR RecommendedRFQ

LTC1441IS8#PBF

Analog Devices Inc.In Stock: 1034LTC1441IS8#PBF Datasheet

MFR RecommendedRFQ

LTC1441IS8#TRPBF

Analog Devices Inc.In Stock: 710LTC1441IS8#TRPBF Datasheet

MFR RecommendedRFQ

TS393CD C3G

Taiwan Semiconductor CorporationIn Stock: 16247TS393CD C3G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX922CSA is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Number of Elements: 2 (dual comparator configuration)
• Output Type: CMOS, TTL compatible
• Package / Case: 8-SOIC surface mount form factor
• Voltage - Supply, Single/Dual (±): Overlapping or equivalent supply voltage ranges
• Voltage - Input Offset (Max): 10mV @ 5V or better
• Current - Output (Typ): Minimum 40mA capability
• Current - Quiescent (Max): ≤ 5.7µA
• CMRR, PSRR (Typ): 80dB or better
• Operating Temperature: Minimum 0°C ~ 70°C coverage
• Mounting Type: Surface Mount

Substitute Parts Identified:

1. MAX922CSA+ (Direct Equivalent, Active Status) – Identical electrical specifications with RoHS3 compliance upgrade and active product status.

2. LTC1441CS8#PBF, LTC1441CS8#TRPBF, LTC1441IS8#PBF, LTC1441IS8#TRPBF (Manufacturer Recommended Alternatives) – LTC1441 series comparators meet all electrical parameters with extended temperature range options (LTC1441IS8 variants: -40°C ~ 85°C) and RoHS3 compliance. Available in tube and tape & reel packaging.

3. TS393CD C3G (Alternative Substitute) – Taiwan Semiconductor Corporation dual comparator with broader supply voltage range (2V ~ 36V, ±1V ~ 18V), superior input offset (2mV @ 5V), and lower quiescent current (1mA). Package differs (8-DIP through-hole vs. 8-SOIC surface mount).

Parameter Comparison

Engineering Selection Recommendations

For Direct Pin-Compatible Replacement (Recommended Primary Path):

Select MAX922CSA+ for immediate substitution. This part maintains identical electrical specifications and 8-SOIC surface mount packaging while transitioning to active product status and RoHS3 compliance. No PCB redesign or firmware modification is required.

For Long-Term Supply Chain Assurance:

The LTC1441 series (LTC1441CS8#PBF, LTC1441CS8#TRPBF, LTC1441IS8#PBF, LTC1441IS8#TRPBF) represents the manufacturer-recommended alternative path. All variants are active products with RoHS3 compliance. The LTC1441IS8 variants extend operating temperature to -40°C ~ 85°C, suitable for industrial and automotive applications. Propagation delay increases marginally to 15µs; verify timing-critical applications can tolerate this specification change. Available in tube and tape & reel packaging options.

For Applications Requiring Extended Supply Voltage Range:

The TS393CD C3G offers broader supply voltage capability (2V ~ 36V, ±1V ~ 18V) and superior input offset accuracy (2mV @ 5V). However, this part uses 8-DIP through-hole packaging, requiring PCB layout modification. Output current is reduced to 16mA typical at 5V. Select this alternative only when supply voltage range or input offset performance is a design requirement.

Compliance Considerations:

The MAX922CSA is RoHS non-compliant. All substitute parts (MAX922CSA+, LTC1441 series, TS393CD C3G) are RoHS3 compliant, meeting current regulatory requirements for new designs and manufacturing.

Frequently Asked Questions (FAQ)

Q: Can MAX922CSA+ be used as a direct drop-in replacement for MAX922CSA?

A: Yes. MAX922CSA+ is electrically and mechanically identical to MAX922CSA, with the same 8-SOIC surface mount package, dual supply voltage range (±1.25V ~ 5.5V or 2.5V ~ 11V), and output current specification (50mA typical). The primary difference is active product status and RoHS3 compliance. No design changes are required.

Q: What is the key difference between LTC1441CS8 and LTC1441IS8 variants?

A: The LTC1441IS8 extends the operating temperature range to -40°C ~ 85°C, compared to 0°C ~ 70°C for LTC1441CS8. Both variants share identical electrical specifications (10mV input offset, 40mA output current, 80dB CMRR/PSRR). Select LTC1441IS8 for applications requiring extended temperature operation or industrial/automotive environments.

Q: Does packaging format affect substitution eligibility?

A: Packaging format is a critical substitution parameter. MAX922CSA, MAX922CSA+, and LTC1441 series all use 8-SOIC surface mount packaging and are directly interchangeable on existing PCBs. TS393CD C3G uses 8-DIP through-hole packaging and requires PCB redesign; select this alternative only when supply voltage range or input offset performance justifies layout modification.

Q: What is the propagation delay difference between MAX922CSA and LTC1441 series?

A: MAX922CSA specifies 12µs maximum propagation delay; LTC1441 series specifies 15µs maximum. This 3µs difference is negligible for most general-purpose comparator applications. Verify timing-critical circuits can tolerate the LTC1441 specification before selection.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. MAX922CSA+ and all LTC1441 variants (LTC1441CS8#PBF, LTC1441CS8#TRPBF, LTC1441IS8#PBF, LTC1441IS8#TRPBF) are RoHS3 compliant. TS393CD C3G is also RoHS3 compliant. The original MAX922CSA is RoHS non-compliant.

Q: Can TS393CD C3G replace MAX922CSA in all applications?

A: TS393CD C3G meets the dual comparator, CMOS/TTL output, and general-purpose functional requirements. However, three factors require evaluation: (1) 8-DIP through-hole packaging requires PCB redesign versus 8-SOIC surface mount; (2) output current is 16mA typical at 5V versus 50mA for MAX922CSA; (3) propagation delay is not specified. Select TS393CD C3G only when extended supply voltage range (2V ~ 36V) or superior input offset (2mV @ 5V) is a design requirement.

Q: What inventory status should influence part selection?

A: MAX922CSA has 3800 units in stock but is obsolete. MAX922CSA+ has 3700 units and active status. LTC1441 variants have lower inventory (645–1342 units depending on variant). For immediate availability, MAX922CSA+ is preferred. For long-term supply assurance, LTC1441 series represents the manufacturer-recommended active alternative.