XR17D154IV-F Equivalent & Substitute Parts

Part Overview

The XR17D154IV-F is a quad-channel UART interface IC manufactured by MaxLinear, Inc., designed for RS485 serial communication applications. This device features a 144-LQFP package with 64-byte FIFO buffers and supports data rates up to 6.25 Mbps. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

XR17D154IV-F

MaxLinear, Inc.In Stock: 2360XR17D154IV-F Datasheet

Current PartRFQ

XR17V354IB176-F

MaxLinear, Inc.In Stock: 2292XR17V354IB176-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the XR17D154IV-F is determined by the following critical parameters:

• Channel Configuration: Quad-channel (4 QUART) RS485 UART functionality
• Protocol Compatibility: RS485 serial communication standard
• Supply Voltage Range: Operating voltage compatibility (3.3V and/or 5V)
• Package Footprint: Physical dimensions and pin count for PCB integration
• FIFO Capacity: Buffer size for data handling
• Data Rate Support: Maximum baud rate capability
• Mounting Technology: Surface mount compatibility

The XR17V354IB176-F qualifies as a manufacturer-recommended substitute based on matching core functional requirements: quad-channel RS485 UART operation, surface mount technology, and MaxLinear manufacturing lineage. However, differences in package type, FIFO capacity, and electrical specifications must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The XR17V354IB176-F is designated as the manufacturer-recommended substitute for the obsolete XR17D154IV-F. Selection of this substitute is supported by the following factors:

Functional Alignment: Both devices provide quad-channel RS485 UART interface capability with identical channel configuration and protocol support.

Product Status: The XR17V354IB176-F maintains active product status with current manufacturing availability, addressing the obsolescence of the original part.

Compliance Standards: The substitute meets ROHS3 compliance requirements, exceeding the RoHS compliance level of the original part. Both devices carry identical HTSUS classification (8542.39.0001) and EAR99/5A991B1 export control designations.

Performance Enhancement: The substitute provides increased FIFO capacity (256 Byte vs. 64 Byte) and higher maximum data rate (31.25 Mbps vs. 6.25 Mbps), offering improved performance headroom for serial communication applications.

Package Transition: The shift from 144-LQFP to 176-FPBGA packaging requires PCB redesign. The FPBGA package offers reduced footprint (13x13 mm vs. 20x20 mm) and improved thermal characteristics.

Supply Voltage Consideration: The substitute operates at 3.3V only, whereas the original supported both 3.3V and 5V. Applications requiring 5V operation require alternative solutions or voltage regulation implementation.

Frequently Asked Questions (FAQ)

Q: Can the XR17V354IB176-F directly replace the XR17D154IV-F without PCB modification?

A: No. The package types differ fundamentally: 144-LQFP versus 176-FPBGA. PCB layout redesign is required, including footprint changes, via placement for BGA connections, and thermal management considerations.

Q: What is the primary reason for substitution?

A: The XR17D154IV-F is classified as obsolete. The XR17V354IB176-F is the manufacturer-recommended active substitute, ensuring continued supply chain availability and manufacturing support.

Q: Are both devices compatible with 5V supply voltage?

A: No. The original XR17D154IV-F supports both 3.3V and 5V operation. The substitute XR17V354IB176-F operates at 3.3V only. Applications requiring 5V operation must implement external voltage regulation or select alternative components.

Q: What are the key performance differences?

A: The substitute provides four times the FIFO capacity (256 Byte vs. 64 Byte) and five times the maximum data rate (31.25 Mbps vs. 6.25 Mbps). These enhancements support higher-speed serial communication and reduce interrupt frequency for data buffering.

Q: Does the substitute include additional features?

A: Yes. The XR17V354IB176-F includes auto flow control and modem control capabilities not specified in the original part. Both devices retain IrDA encoder/decoder and false start bit detection functionality.

Q: What compliance certifications apply to the substitute?

A: The XR17V354IB176-F meets ROHS3 compliance and REACH unaffected status. Both devices share identical HTSUS and export control classifications, maintaining regulatory alignment for international distribution.

Q: How does the MSL rating differ?

A: The original part carries MSL 3 (168 hours), while the substitute is rated MSL 4 (72 hours). This indicates different moisture sensitivity levels and storage requirements. Lower MSL ratings require more stringent moisture control during handling and storage.