MAX1609EEE+ Equivalent & Substitute Parts

Part Overview

The MAX1609EEE+ is an 8-channel I/O expander interface component manufactured by Analog Devices Inc./Maxim Integrated. It operates over the SMBus protocol at 100 kHz with an open-drain output configuration and power-on reset (POR) feature. The device is currently in active production status with 739 units in stock.

Substitute parts become necessary when the MAX1609EEE+ reaches end-of-life status, inventory constraints occur, or alternative packaging and interface requirements must be accommodated in system redesigns. The parts listed below provide functional equivalence within defined electrical and mechanical parameter boundaries.

Key Parameters

Parameter	MAX1609EEE+
Number of I/O Channels	8
Interface Protocol	SMBus
Clock Frequency	100 kHz
Supply Voltage Range	2.7V ~ 5.5V
Operating Temperature Range	-40°C ~ 85°C
Output Type	Open Drain
Package Type	16-SSOP (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MAX1609EEE+ is determined by the following critical parameters:

Number of I/O Channels: 8 channels minimum
Interface Protocol: SMBus or I2C (SMBus-compatible)
Clock Frequency: 100 kHz operation
Supply Voltage Range: Must encompass or exceed 2.7V ~ 5.5V
Output Type: Open Drain configuration
Package Compatibility: 16-pin surface mount packages
Operating Temperature: -40°C ~ 85°C minimum range
Compliance: ROHS3 and REACH requirements

The substitute parts identified below meet these core criteria with variations in package form factor, I/O channel count, and extended temperature ranges. Parts with obsolete status remain functionally equivalent but may have limited availability.

Parameter Comparison

Parameter	MAX1609EEE+	MIC74YQS	NLVPCA9535EDTR2G	NLVPCA9535EMTTXG
Manufacturer	Analog Devices Inc./Maxim Integrated	Microchip Technology	onsemi	onsemi
Number of I/O	8	8	16	8
Interface Protocol	SMBus	I2C, SMBus	I2C	I2C
Clock Frequency	100 kHz	100 kHz	100 kHz	100 kHz
Supply Voltage Range	2.7V ~ 5.5V	2.7V ~ 3.6V	1.65V ~ 5.5V	1.65V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-55°C ~ 125°C	-55°C ~ 125°C
Output Type	Open Drain	Open Drain, Push-Pull	Open Drain	Open Drain
Interrupt Output	No	Yes	Yes	Yes
Package Type	16-SSOP	16-SSOP	24-TSSOP	24-WQFN (4x4)
Product Status	Active	Obsolete	Obsolete	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

MIC74YQS (Microchip Technology): This part maintains the same 8-channel I/O count, 16-SSOP package footprint, and identical operating temperature range as the MAX1609EEE+. It supports both I2C and SMBus protocols at 100 kHz. The primary limitation is the reduced supply voltage range (2.7V ~ 3.6V versus 2.7V ~ 5.5V), which restricts use in 5V-only systems. Product status is obsolete. This substitute is optimal for designs requiring pin-compatible replacement with minimal PCB layout changes.

NLVPCA9535EDTR2G (onsemi): This part expands I/O capacity to 16 channels while maintaining 100 kHz I2C operation and open-drain output. The 24-TSSOP package requires PCB layout modification. Supply voltage range (1.65V ~ 5.5V) and extended operating temperature (-55°C ~ 125°C) exceed the original specification. Product status is obsolete. This substitute is suitable for applications requiring additional I/O expansion capacity with enhanced temperature performance.

NLVPCA9535EMTTXG (onsemi): This variant provides 8 I/O channels in a 24-WQFN (4x4) package with I2C interface at 100 kHz. Supply voltage range (1.65V ~ 5.5V) and extended operating temperature (-55°C ~ 125°C) exceed the original specification. The compact QFN package reduces board area compared to SSOP. Product status is obsolete. This substitute is appropriate for space-constrained designs with enhanced thermal and temperature performance requirements.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can MIC74YQS directly replace MAX1609EEE+ in a 5V system?

A: No. MIC74YQS operates at maximum 3.6V supply voltage, while MAX1609EEE+ supports up to 5.5V. Direct substitution in 5V-only systems will cause device malfunction or damage.

Q: What is the primary advantage of NLVPCA9535EDTR2G over MAX1609EEE+?

A: NLVPCA9535EDTR2G provides 16 I/O channels versus 8, doubling expansion capacity. It also offers extended operating temperature range (-55°C ~ 125°C) and wider supply voltage tolerance (1.65V ~ 5.5V). The trade-off is a larger 24-TSSOP package requiring PCB redesign.

Q: Are the onsemi parts pin-compatible with MAX1609EEE+?

A: No. NLVPCA9535EDTR2G uses 24-TSSOP packaging and NLVPCA9535EMTTXG uses 24-WQFN packaging, both incompatible with the 16-SSOP footprint of MAX1609EEE+. PCB layout modification is required.

Q: Why are substitute parts listed as obsolete?

A: Product status reflects manufacturer lifecycle classification at the time of data compilation. Obsolete status indicates these parts are no longer in active production but may remain available through inventory channels. Availability should be verified with component distributors.

Q: Can I use NLVPCA9535EMTTXG in place of NLVPCA9535EDTR2G?

A: Both parts share the same base product number (NLVPCA9535) and I2C interface at 100 kHz. The primary difference is package type (24-WQFN versus 24-TSSOP) and I/O channel count (8 versus 16). Selection depends on specific I/O requirements and board space constraints.

Q: What compliance certifications apply to all listed parts?

A: All parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Moisture sensitivity level is 1 (unlimited) for all variants, indicating standard handling and storage requirements.

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