MUX508IPWR Equivalent & Substitute Parts

Part Overview

The MUX508IPWR is an 8:1 multiplexer/demultiplexer integrated circuit manufactured by Texas Instruments, housed in a 16-TSSOP surface mount package. This device functions as an analog switch with a single circuit configuration, designed for signal routing and selection applications across a wide supply voltage range. The part is currently in active production status with substantial inventory availability (120,527 pieces in stock). Alternative components become necessary when supply constraints occur, specific performance characteristics are required for application optimization, or when design flexibility across multiple sourcing channels is needed.

Substiute Parts

MUX508IPWR

Texas InstrumentsIn Stock: 120537MUX508IPWR Datasheet

Current PartRFQ

PS508LEX

Diodes IncorporatedIn Stock: 3243PS508LEX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MUX508IPWR is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Multiplexer/Demultiplexer circuit configuration: 8:1
• Number of circuits: 1
• Package type: 16-TSSOP surface mount
• Supply voltage ranges: Single supply 10V ~ 36V and dual supply ±5V ~ 18V
• Operating temperature range: -40°C ~ 125°C
• RoHS3 compliance status

Performance Parameters (Allowed Variance):

• On-State Resistance (Max): Substitute must not exceed 200Ohm
• Channel-to-Channel Matching (ΔRon): Substitute tolerance up to 6Ohm
• Switch Time (Ton, Toff): Substitute up to 210ns, 191ns
• Charge Injection: Substitute up to 2pC
• Channel Capacitance: Substitute up to 5pF (CS(off)), 24pF (CD(off))
• Current - Leakage (IS(off)): Maximum 1nA
• Crosstalk: -96dB @ 1MHz minimum

The PS508LEX from Diodes Incorporated meets all critical matching parameters and operates within the allowed performance variance, qualifying it as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

Both the MUX508IPWR and PS508LEX maintain active product status with full RoHS3 compliance and REACH unaffected designation. Selection between these components should be based on application-specific requirements and supply availability. The MUX508IPWR offers superior performance characteristics in on-state resistance (170Ohm vs. 200Ohm), channel-to-channel matching (2.4Ohm vs. 6Ohm), switch time performance (136ns/75ns vs. 210ns/191ns), and charge injection (0.3pC vs. 2pC). The PS508LEX provides equivalent functionality for applications where these performance differentials are not critical to system operation. Both devices are suitable for the full operating temperature range of -40°C to 125°C and support identical supply voltage configurations.

Frequently Asked Questions (FAQ)

Q: Can PS508LEX be used as a direct replacement for MUX508IPWR in existing designs?

A: Yes, the PS508LEX qualifies as a direct substitute based on matching circuit configuration (8:1 multiplexer), identical package type (16-TSSOP), matching supply voltage ranges, and equivalent operating temperature specifications. Performance parameter variations remain within acceptable engineering tolerances for most applications.

Q: What are the key performance differences between these two parts?

A: The MUX508IPWR demonstrates lower on-state resistance (170Ohm vs. 200Ohm), tighter channel-to-channel matching (2.4Ohm vs. 6Ohm), faster switch times (136ns/75ns vs. 210ns/191ns), and lower charge injection (0.3pC vs. 2pC). These differences may be significant in high-speed signal routing or precision analog switching applications.

Q: Are both parts available in the same packaging format?

A: Both the MUX508IPWR and PS508LEX are housed in 16-TSSOP surface mount packages with identical physical dimensions (0.173" width, 4.40mm). The MUX508IPWR is supplied in Cut Tape (CT) & Digi-Reel format, while the PS508LEX is supplied in Tape & Reel (TR) format. Both formats are compatible with standard surface mount assembly processes.

Q: What compliance certifications apply to both parts?

A: Both components are ROHS3 compliant and REACH unaffected. The MUX508IPWR carries Moisture Sensitivity Level 2 (1 Year) rating. Both parts are classified under ECCN EAR99 and HTSUS 8542.39.0001.

Q: Which part should be selected for new designs?

A: Selection should be based on application performance requirements and supply chain considerations. For applications requiring optimized on-state resistance, faster switching, or lower charge injection, the MUX508IPWR is the preferred choice. For applications where these performance characteristics are not critical, either part provides equivalent functionality.