TS5A3357DCUT Equivalent & Substitute Parts

Part Overview

The TS5A3357DCUT is a single-circuit SP3T analog switch manufactured by Texas Instruments, designed for signal routing and multiplexing applications in interface circuits. This device features a 15Ohm on-state resistance and operates across a 1.65V to 5.5V supply range, making it suitable for low-voltage digital and mixed-signal systems. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain flexibility for new production runs or design revisions.

Substiute Parts

TS5A3357DCUT

Texas InstrumentsIn Stock: 1970TS5A3357DCUT Datasheet

Current PartRFQ

TS5A3357DCUR

Texas InstrumentsIn Stock: 82744TS5A3357DCUR Datasheet

Parametric EquivalentRFQ

FSA3357K8X

onsemiIn Stock: 18048FSA3357K8X Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TS5A3357DCUT is determined by the following critical parameters:

Primary Substitution Criteria:

• Switch circuit configuration must be SP3T
• Multiplexer/demultiplexer circuit must be 3:1
• Number of circuits must be 1
• On-state resistance must not exceed 15Ohm
• Supply voltage range must encompass 1.65V ~ 5.5V
• Operating temperature range must cover -40°C ~ 85°C
• Package must be compatible with 8-pin surface-mount footprint

Secondary Compatibility Factors:

• Channel-to-channel matching (ΔRon) tolerance
• Switch timing characteristics (Ton, Toff)
• Bandwidth performance
• Charge injection specifications
• Leakage current specifications

Parts meeting all primary criteria are considered direct parametric equivalents. Variations in secondary factors indicate performance trade-offs that must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

TS5A3357DCUR (Texas Instruments): This part is a parametric equivalent to the TS5A3357DCUT with identical electrical specifications across all measured parameters. The primary distinction is product status: TS5A3357DCUR is in Active production status, ensuring long-term availability and supply chain stability. Both parts carry ROHS3 compliance and MSL 1 rating. Selection of TS5A3357DCUR is recommended for new designs or production runs requiring extended component lifecycle.

FSA3357K8X (onsemi): This part meets all primary substitution criteria with identical switch circuit configuration, on-state resistance, supply voltage range, and operating temperature specifications. Secondary parameter variations include channel-to-channel matching tolerance (150mOhm versus 100mOhm), reduced -3dB bandwidth (200MHz versus 334MHz), and slightly lower crosstalk performance (-60dB versus -62dB). The FSA3357K8X is suitable for applications where the reduced bandwidth and matching tolerance are acceptable trade-offs. This part is in Active production status and carries equivalent compliance certifications.

Both substitute parts are surface-mount compatible with the original 8-pin footprint and maintain compliance with ROHS3 and REACH requirements.

Frequently Asked Questions (FAQ)

Q: Can TS5A3357DCUR be used as a direct replacement for TS5A3357DCUT?

A: Yes. TS5A3357DCUR is a parametric equivalent with identical electrical and mechanical specifications. The primary difference is product status: TS5A3357DCUR is in Active production, while TS5A3357DCUT is Last Time Buy. Both parts are pin-compatible and functionally interchangeable.

Q: What are the key differences between TS5A3357DCUR and FSA3357K8X?

A: Both parts share identical switch circuit configuration (SP3T), on-state resistance (15Ohm), and supply voltage range (1.65V ~ 5.5V). FSA3357K8X has a higher channel-to-channel matching tolerance (150mOhm versus 100mOhm), lower -3dB bandwidth (200MHz versus 334MHz), and slightly reduced crosstalk performance (-60dB versus -62dB). Selection depends on whether these performance variations are acceptable for the target application.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All three parts use the 8-VFSOP package with 0.091" width and 2.30mm dimensions, ensuring footprint compatibility on existing PCB designs.

Q: What compliance certifications apply to these parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. All parts are classified under ECCN EAR99 and HTSUS 8542.39.0001.

Q: Which substitute part should be selected for new production designs?

A: TS5A3357DCUR is recommended for new designs due to its Active production status, identical parametric specifications to the original part, and assured long-term availability. FSA3357K8X is suitable if supply constraints exist or if the secondary performance variations align with application requirements.

Q: Can FSA3357K8X be used in high-frequency applications?

A: FSA3357K8X has a -3dB bandwidth of 200MHz compared to 334MHz for the TS5A3357DCUT and TS5A3357DCUR. Applications requiring bandwidth above 200MHz should use TS5A3357DCUR to maintain performance specifications.