MAX1608EEE Equivalent & Substitute Parts

Part Overview

The MAX1608EEE is an 8-channel I/O expander with SMBus interface operating at 100 kHz, manufactured by Analog Devices Inc./Maxim Integrated. This device is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part features open-drain output configuration, power-on reset (POR), and operates across a 2.7V to 5.5V supply range in a 16-QSOP surface-mount package.

Substiute Parts

MAX1608EEE

Analog Devices Inc./Maxim IntegratedIn Stock: 791MAX1608EEE Datasheet

Current PartRFQ

MAX1608EEE+

Analog Devices Inc./Maxim IntegratedIn Stock: 742MAX1608EEE+ Datasheet

DirectRFQ

NLVPCA9535EDTR2G

onsemiIn Stock: 5716NLVPCA9535EDTR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MAX1608EEE is determined by the following critical parameters:

• Interface Protocol Compatibility: SMBus and I2C protocols operate on the same electrical bus architecture, allowing devices with either protocol to function in compatible systems
• Clock Frequency: 100 kHz operation is the baseline requirement
• Output Configuration: Open-drain output type must be maintained
• Voltage Supply Range: Substitute parts must support the operating voltage envelope
• Package Form Factor: Surface-mount packages with compatible pinout and thermal characteristics
• I/O Channel Count: Minimum 8 channels required; higher channel counts are acceptable in applications with available address pins

Two substitute options are identified:

1. MAX1608EEE+ (Direct Manufacturer Upgrade): Active product status with identical electrical specifications and RoHS3 compliance
2. NLVPCA9535EDTR2G (Cross-Manufacturer Alternative): onsemi I2C expander with expanded I/O capability and extended operating temperature range

Parameter Comparison

Engineering Selection Recommendations

MAX1608EEE+ (Recommended Primary Substitute)

The MAX1608EEE+ is the direct manufacturer upgrade path. It maintains identical electrical specifications, pinout compatibility, and package form factor while transitioning from Obsolete to Active product status. RoHS3 compliance addresses regulatory requirements for new designs and manufacturing environments. This option requires no circuit redesign and provides the shortest qualification timeline.

NLVPCA9535EDTR2G (Alternative Cross-Manufacturer Option)

The NLVPCA9535EDTR2G provides expanded functionality with 16 I/O channels and interrupt output capability. The I2C protocol is electrically compatible with SMBus on the same bus architecture. Extended operating temperature range (-55°C to 125°C) and lower minimum supply voltage (1.65V) offer broader application flexibility. Package transition from 16-SSOP to 24-TSSOP requires PCB layout modification. This option is suitable for applications where additional I/O channels or interrupt functionality provide system-level benefits justifying the redesign effort.

Both substitutes maintain 100 kHz clock frequency, open-drain output configuration, and RoHS3 compliance status.

Frequently Asked Questions (FAQ)

Q: Can MAX1608EEE+ be used as a direct replacement without circuit modification?

A: Yes. The MAX1608EEE+ maintains identical pinout, package dimensions (16-SSOP), electrical specifications, and interface protocol (SMBus). No circuit redesign is required.

Q: Is NLVPCA9535EDTR2G compatible with SMBus systems?

A: Yes. The NLVPCA9535EDTR2G uses I2C protocol, which operates on the same electrical bus architecture as SMBus. Both protocols use open-drain outputs and identical clock frequencies (100 kHz). However, the package change from 16-SSOP to 24-TSSOP requires PCB layout modification.

Q: What is the key difference between the two substitute options?

A: MAX1608EEE+ is a direct manufacturer upgrade with identical specifications and package. NLVPCA9535EDTR2G is a cross-manufacturer alternative offering 16 I/O channels (versus 8), interrupt output capability, and extended temperature range, but requires package redesign.

Q: Does the NLVPCA9535EDTR2G interrupt output feature affect SMBus compatibility?

A: No. The interrupt output is an additional feature that does not impact SMBus/I2C protocol compatibility or bus operation. It provides optional interrupt signaling capability not present in the MAX1608EEE.

Q: Are both substitutes RoHS compliant?

A: Yes. Both MAX1608EEE+ and NLVPCA9535EDTR2G are RoHS3 compliant. The original MAX1608EEE is RoHS non-compliant.

Q: What is the voltage supply consideration for NLVPCA9535EDTR2G?

A: The NLVPCA9535EDTR2G supports 1.65V to 5.5V supply range, which is broader than the MAX1608EEE (2.7V to 5.5V). This allows operation in lower-voltage applications if required.