MAX358CWE Equivalent & Substitute Parts

Part Overview

The MAX358CWE is an 8:1 analog multiplexer IC manufactured by Analog Devices Inc./Maxim Integrated, housed in a 16-SOIC package with 1.8kOhm on-state resistance. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production requirements. The part operates with dual supply voltages (±4.5V to ±18V) and features 300ns typical switch times, making it suitable for signal routing and analog switching applications.

Substiute Parts

MAX358CWE

Analog Devices Inc./Maxim IntegratedIn Stock: 4722MAX358CWE Datasheet

Current PartRFQ

MAX358CWE+

Analog Devices Inc./Maxim IntegratedIn Stock: 3370MAX358CWE+ Datasheet

DirectRFQ

HI9P0548-5Z

Renesas Electronics CorporationIn Stock: 1522HI9P0548-5Z Datasheet

MFR RecommendedRFQ

HI9P0548-5Z96

Renesas Electronics CorporationIn Stock: 1175HI9P0548-5Z96 Datasheet

MFR RecommendedRFQ

MPC508AU

Texas InstrumentsIn Stock: 3835MPC508AU Datasheet

MFR RecommendedRFQ

MPC508AU/1K

Texas InstrumentsIn Stock: 2664MPC508AU/1K Datasheet

MFR RecommendedRFQ

MUX08FSZ

Analog Devices Inc.In Stock: 1775MUX08FSZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX358CWE is determined by strict equivalence across the following critical parameters:

• Multiplexer Configuration: Must be 8:1
• Package Type: Must be 16-SOIC form factor
• On-State Resistance: Maximum 1.8kOhm (lower values are acceptable)
• Supply Voltage Compatibility: Dual supply operation within overlapping voltage ranges
• Switch Time Performance: Maximum 300ns switching capability
• Leakage Current: Maximum 10µA specification

Substitute parts are grouped into two categories: direct pin-compatible replacements from the same manufacturer (active product status) and functionally equivalent alternatives from other manufacturers that meet all electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: MAX358CWE+

The MAX358CWE+ is the direct successor to the MAX358CWE, manufactured by Analog Devices Inc./Maxim Integrated. This part maintains identical electrical specifications (1.8kOhm on-state resistance, ±4.5V to ±18V dual supply, 300ns switching) and mechanical compatibility (16-SOIC 0.295" width package). The MAX358CWE+ holds active product status and achieves ROHS3 compliance, making it the optimal choice for new designs and production transitions from the obsolete MAX358CWE.

Secondary Recommendations: HI9P0548-5Z / HI9P0548-5Z96

The Renesas Electronics HI9P0548-5Z and HI9P0548-5Z96 provide functional equivalence with identical 8:1 multiplexer configuration and 1.8kOhm on-state resistance. Both variants are ROHS3 compliant and active products. The HI9P0548-5Z is supplied in tube packaging, while HI9P0548-5Z96 is supplied in tape & reel format. Note that these parts operate at ±15V dual supply (narrower range than MAX358CWE) and feature improved leakage current performance (30pA typical vs. 10µA maximum). Package width differs (0.154" vs. 0.295"), requiring PCB layout verification.

Tertiary Recommendations: MPC508AU / MPC508AU/1K

The Texas Instruments MPC508AU and MPC508AU/1K offer 8:1 multiplexer functionality with lower on-state resistance (1.5kOhm maximum) and superior switching performance (200ns/250ns typical). These parts support wider dual supply range (±5V to ±22V) and extended operating temperature (-40°C to 85°C). Both are ROHS3 compliant and active products. MPC508AU is supplied in tube packaging; MPC508AU/1K is supplied in tape & reel format. Package width matches the MAX358CWE (0.295", 7.50mm).

Alternative: MUX08FSZ

The Analog Devices MUX08FSZ represents a performance-enhanced alternative with significantly lower on-state resistance (300Ohm) and superior leakage current (1nA). This part is ROHS3 compliant and active. However, MUX08FSZ does not support dual supply operation and features different package width (0.154", 3.90mm), requiring comprehensive design review before substitution.

Frequently Asked Questions (FAQ)

Q: Can MAX358CWE+ be used as a direct replacement for MAX358CWE?

A: Yes. The MAX358CWE+ maintains identical electrical specifications and 16-SOIC package dimensions (0.295" width). Pin configuration and functional behavior are equivalent. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the key difference between HI9P0548-5Z and HI9P0548-5Z96?

A: Both parts are electrically identical. The difference is packaging format: HI9P0548-5Z is supplied in tube packaging, while HI9P0548-5Z96 is supplied in tape & reel format. Selection depends on assembly process requirements and volume.

Q: Can MPC508AU replace MAX358CWE in all applications?

A: MPC508AU is functionally compatible for 8:1 multiplexing applications. The lower on-state resistance (1.5kOhm vs. 1.8kOhm) and faster switching (200ns/250ns vs. 300ns) provide performance improvement. The wider supply voltage range (±5V to ±22V) offers greater flexibility. However, applications sensitive to on-state resistance variation should be evaluated, as this parameter differs from the original specification.

Q: Why does MUX08FSZ have different package width?

A: MUX08FSZ uses a narrower 16-SOIC package (0.154" vs. 0.295" width). This is a different physical form factor that requires PCB layout modification. Pin pitch and electrical interface remain compatible with standard 16-SOIC pinout, but board-level integration requires design changes.

Q: What does ROHS3 compliance mean for the substitute parts?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All recommended substitute parts (MAX358CWE+, HI9P0548 series, MPC508 series, MUX08FSZ) are ROHS3 compliant, whereas the original MAX358CWE is non-compliant. This is relevant for applications subject to environmental regulations or customer requirements.

Q: Are there supply voltage compatibility issues when substituting?

A: Yes. The original MAX358CWE operates at ±4.5V to ±18V. The HI9P0548 series operates at ±15V (fixed, narrower range). The MPC508 series operates at ±5V to ±22V (wider range). Applications using supply voltages outside the substitute part's range require design modification or alternative selection.

Q: What is the significance of leakage current differences?

A: Leakage current affects signal integrity in high-impedance circuits. The MAX358CWE specifies 10µA maximum leakage. The HI9P0548 series (30pA typical) and MPC508 series (500pA typical) provide superior leakage performance, beneficial for precision analog applications. MUX08FSZ (1nA) offers the lowest leakage. Lower leakage current reduces signal degradation in sensitive measurement circuits.

Q: Can package width differences affect PCB compatibility?

A: Yes. The MAX358CWE uses 0.295" width 16-SOIC; HI9P0548 and MUX08FSZ use 0.154" width 16-SOIC. While pin pitch remains standard, the different package width requires PCB footprint modification. Existing PCB designs must be updated to accommodate the narrower package, or alternative parts with matching width (MAX358CWE+, MPC508 series) should be selected.