MAX4538ESE Equivalent & Substitute Parts

Part Overview

The MAX4538ESE is a 4-circuit IC switch with SPST (Single Pole Single Throw) NO/NC configuration, designed for signal routing and multiplexing applications. This device features 100Ohm on-state resistance and operates across a wide supply voltage range of 2V to 12V (single supply) or ±2V to 6V (dual supply). The MAX4538ESE is classified as obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations.

Substiute Parts

MAX4538ESE

Analog Devices Inc./Maxim IntegratedIn Stock: 2141MAX4538ESE Datasheet

Current PartRFQ

MAX4538ESE+

Analog Devices Inc./Maxim IntegratedIn Stock: 2436MAX4538ESE+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX4538ESE is determined by strict equivalence across the following critical parameters:

• Switch Circuit Configuration: Must be SPST - NO/NC
• Number of Circuits: Must be 4
• On-State Resistance (Max): Must be 100Ohm
• Channel-to-Channel Matching (ΔRon): Must be 1Ohm
• Supply Voltage Range: Single supply 2V ~ 12V and dual supply ±2V ~ 6V
• Switch Timing: Ton (Max) 100ns, Toff (Max) 50ns
• Charge Injection: Must be 1pC
• Channel Capacitance: CS(off) and CD(off) both 2pF
• Leakage Current (IS(off)): Must not exceed 2nA
• Crosstalk: Must be -75dB @ 1MHz
• Operating Temperature Range: -40°C ~ 85°C
• Package: 16-SOIC surface mount

The MAX4538ESE+ meets all these criteria and is therefore a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The MAX4538ESE+ is the direct equivalent for the obsolete MAX4538ESE. All electrical and mechanical parameters are identical. The primary distinction is product status and regulatory compliance:

• MAX4538ESE: Obsolete product status with RoHS non-compliant classification
• MAX4538ESE+: Active product status with ROHS3 compliance

For new designs and ongoing system support, the MAX4538ESE+ is the appropriate selection. Both parts share identical functional specifications, pinout, and package geometry, enabling direct substitution at the component level. The MAX4538ESE+ offers the advantage of current manufacturing availability and compliance with modern environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can MAX4538ESE+ be used as a direct replacement for MAX4538ESE?

A: Yes. The MAX4538ESE+ is electrically and mechanically identical to the MAX4538ESE across all specified parameters. Both devices feature 4 SPST NO/NC switch circuits, 100Ohm on-state resistance, identical supply voltage ranges, and 16-SOIC surface mount packaging. Direct substitution is possible without circuit modification.

Q: What is the difference between MAX4538ESE and MAX4538ESE+?

A: The primary differences are product status and regulatory compliance. The MAX4538ESE is obsolete and RoHS non-compliant, while the MAX4538ESE+ is an active product with ROHS3 compliance. All electrical and mechanical specifications are identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the same 16-SOIC surface mount package with 0.154" (3.90mm) width. Pinout and PCB footprint are identical.

Q: What supply voltages are supported?

A: The MAX4538ESE and MAX4538ESE+ support single supply operation from 2V to 12V, or dual supply operation from ±2V to 6V.

Q: What is the on-state resistance specification?

A: Both devices have a maximum on-state resistance of 100Ohm with channel-to-channel matching of 1Ohm.

Q: What are the switch timing specifications?

A: Turn-on time (Ton) is 100ns maximum and turn-off time (Toff) is 50ns maximum for both parts.