SC26C92C1A,529 Equivalent & Substitute Parts

Part Overview

The SC26C92C1A,529 is a dual UART (DUART) interface IC manufactured by NXP USA Inc., designed for serial communication applications requiring 1Mbps data rate capability. This component features 8-byte FIFOs, configurable GPIO, internal oscillator, and modem control functionality in a 44-PLCC surface mount package.

The SC26C92C1A,529 is classified as obsolete, making equivalent substitute parts necessary for new designs, maintenance, and production continuity. Identifying compatible alternatives ensures system functionality while maintaining electrical and mechanical compatibility.

Substiute Parts

SC26C92C1A,529

NXP USA Inc.In Stock: 809SC26C92C1A,529 Datasheet

Current PartRFQ

XR88C681CJ-F

MaxLinear, Inc.In Stock: 10009XR88C681CJ-F Datasheet

MFR RecommendedRFQ

XR88C92CJ-F

MaxLinear, Inc.In Stock: 1155XR88C92CJ-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC26C92C1A,529 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Package type: 44-PLCC (16.59x16.59) with 44-LCC J-Lead configuration
• Dual channel UART (DUART) architecture
• Surface mount mounting type
• Supply voltage compatibility: 5V operation or wider range including 5V
• Data rate capability: minimum 1Mbps or equivalent

Secondary Compatibility Factors:

• FIFO buffer size (8-byte preferred for functional equivalence)
• Presence of configurable GPIO and internal oscillator
• Modem control and auto flow control features
• RoHS and REACH compliance status

Two substitute parts meet the primary compatibility criteria with varying feature sets and product status conditions.

Parameter Comparison

Engineering Selection Recommendations

XR88C92CJ-F (MaxLinear, Inc.) is the primary substitute for new designs and production applications. This part maintains identical FIFO buffer capacity (8-byte), identical dual-channel DUART architecture, and identical package configuration. The XR88C92CJ-F is currently in active production status with ROHS3 compliance and superior moisture sensitivity rating (MSL 1). The supply voltage range (2.97V ~ 5.5V) provides broader operational flexibility compared to the fixed 5V requirement of the original part. The maximum data rate of 230.4kbps is lower than the original 1Mbps specification; this represents a functional limitation that must be evaluated against application requirements.

XR88C681CJ-F (MaxLinear, Inc.) serves as a secondary substitute option where data rate requirements align with 1Mbps capability and FIFO buffer size reduction is acceptable. This part maintains the original 1Mbps data rate specification and identical package configuration. The 3-byte FIFO represents a significant reduction from the 8-byte buffer of the original part, affecting buffering capacity and interrupt handling characteristics. Product status is Last Time Buy, indicating limited future availability. This option is suitable for legacy system maintenance where FIFO reduction does not impact system performance.

Both substitute parts share identical package geometry (44-PLCC, 16.59x16.59), surface mount configuration, and dual-channel UART architecture, ensuring mechanical and electrical pin compatibility with the original SC26C92C1A,529.

Frequently Asked Questions (FAQ)

Q: Can XR88C92CJ-F directly replace SC26C92C1A,529 in existing designs?

A: XR88C92CJ-F provides mechanical and electrical pin compatibility through identical 44-PLCC package configuration and dual-channel UART architecture. However, the maximum data rate specification differs: XR88C92CJ-F operates at 230.4kbps maximum versus the original 1Mbps. Applications operating at or below 230.4kbps can use this substitute without modification. Applications requiring 1Mbps operation must use XR88C681CJ-F or evaluate alternative solutions.

Q: What is the impact of FIFO buffer size differences?

A: The SC26C92C1A,529 and XR88C92CJ-F both feature 8-byte FIFOs, providing identical buffering capacity. The XR88C681CJ-F features a 3-byte FIFO, reducing buffer depth by 62.5%. Smaller FIFO buffers increase interrupt frequency and reduce tolerance for interrupt service delays. Systems with predictable, low-latency interrupt handling can operate with 3-byte FIFOs; systems with variable interrupt latency may experience data loss or overflow conditions.

Q: Are package dimensions identical across all three parts?

A: Yes. All three parts use 44-PLCC (16.59x16.59) surface mount packages with 44-LCC J-Lead configuration. PCB footprints, solder pad layouts, and mechanical mounting requirements are identical, enabling direct socket compatibility.

Q: What are the moisture sensitivity implications?

A: The SC26C92C1A,529 has MSL 3 rating (168-hour floor life), requiring controlled storage and handling. Both MaxLinear substitutes have MSL 1 rating (unlimited floor life), eliminating moisture sensitivity constraints. This represents an improvement in manufacturing flexibility and supply chain handling for substitute parts.

Q: Which substitute should be selected for new production?

A: XR88C92CJ-F is recommended for new production due to active product status, superior moisture sensitivity rating, and broader supply voltage range. This selection ensures long-term component availability and manufacturing support. Verify that the 230.4kbps maximum data rate meets application requirements before implementation.