PCA9674TS,118 Equivalent & Substitute Parts

Part Overview

The PCA9674TS,118 is an 8-bit I/O expander with I2C interface operating at 1 MHz, manufactured by NXP USA Inc. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part features push-pull output configuration with interrupt output capability and operates across a wide supply voltage range of 2.3V to 5.5V.

Substiute Parts

PCA9674TS,118

NXP USA Inc.In Stock: 770PCA9674TS,118 Datasheet

Current PartRFQ

PCA9674APW,118

NXP USA Inc.In Stock: 54576PCA9674APW,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PCA9674TS,118 is determined by the following critical parameters:

• I/O Configuration: 8-bit I/O expander functionality
• Interface Protocol: I2C communication at 1 MHz clock frequency
• Electrical Characteristics: Push-pull output type with 100µA/25mA source/sink current capability
• Supply Voltage Range: 2.3V to 5.5V operation
• Temperature Range: -40°C to 85°C operating window
• Interrupt Capability: Interrupt output feature presence
• Compliance: ROHS3 compliance and REACH unaffected status

The PCA9674APW,118 qualifies as a direct substitute based on matching all functional and electrical parameters. The primary difference is the package configuration: the main part uses 20-SSOP packaging while the substitute uses 16-TSSOP packaging. Both packages are surface-mount configurations with identical 0.173" (4.40mm) width specifications.

Parameter Comparison

Engineering Selection Recommendations

The PCA9674APW,118 is the qualified substitute for the obsolete PCA9674TS,118. Selection of this substitute is supported by:

• Functional Equivalence: Identical I/O count, interface protocol, clock frequency, and electrical output characteristics
• Active Product Status: The substitute maintains active manufacturing status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements
• Package Compatibility: Both parts use surface-mount technology with matching body width specifications, enabling direct PCB layout adaptation with minimal redesign

The primary design consideration is the package transition from 20-LSSOP to 16-TSSOP, which requires PCB footprint modification but does not affect functional performance or electrical characteristics.

Frequently Asked Questions (FAQ)

Q: Can the PCA9674APW,118 be used as a direct replacement for the PCA9674TS,118?

A: Yes, the PCA9674APW,118 is functionally equivalent. All electrical parameters, I/O configuration, interface protocol, and operating conditions are identical. PCB layout modification is required due to package differences (20-LSSOP to 16-TSSOP).

Q: What is the primary difference between these two parts?

A: The main difference is the package configuration. The PCA9674TS,118 uses 20-LSSOP packaging while the PCA9674APW,118 uses 16-TSSOP packaging. Both are surface-mount packages with identical body width (0.173", 4.40mm).

Q: Are there any electrical performance differences between the substitute and the original part?

A: No. Both parts have identical supply voltage range (2.3V ~ 5.5V), output current specifications (100µA/25mA), clock frequency (1 MHz), and operating temperature range (-40°C ~ 85°C).

Q: Does the substitute part support the same I2C protocol and interrupt functionality?

A: Yes. The PCA9674APW,118 maintains identical I2C interface operation at 1 MHz and includes interrupt output capability with push-pull output configuration.

Q: What is the availability status of the substitute part?

A: The PCA9674APW,118 is classified as active product status with 54,466 pieces in stock, ensuring reliable supply availability compared to the obsolete status of the original part.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the PCA9674TS,118 and PCA9674APW,118 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.