SC26C92C1A,512 Equivalent & Substitute Parts

Part Overview

The SC26C92C1A,512 is a dual-channel UART interface IC manufactured by NXP USA Inc., designed for serial communication applications requiring dual asynchronous receiver-transmitter functionality with integrated FIFO buffering. This component features an 8-byte FIFO per channel, configurable GPIO, internal oscillator, and modem control capabilities in a 44-PLCC surface-mount package.

The SC26C92C1A,512 is classified as obsolete. Equivalent and substitute parts are necessary to maintain system functionality and ensure continued availability for new designs and legacy system support.

Substiute Parts

SC26C92C1A,512

NXP USA Inc.In Stock: 989SC26C92C1A,512 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

Substitute parts for the SC26C92C1A,512 are selected based on the following critical parameters:

Primary Substitution Criteria:

• Dual-channel UART (DUART) architecture
• 44-PLCC (16.59x16.59) package compatibility
• 5V supply voltage operation
• 8-byte FIFO depth per channel
• Auto flow control capability
• Modem control functionality
• Surface-mount configuration

Substitutes Identified:

1. XR88C92CJ-F (MaxLinear, Inc.) – Direct functional equivalent with active product status
2. XR88C681CJ-F (MaxLinear, Inc.) – Reduced FIFO depth variant with last-time-buy status

Both substitutes maintain the 44-PLCC package footprint and dual-channel UART architecture. The XR88C92CJ-F provides the closest electrical and functional match, while the XR88C681CJ-F offers compatibility with reduced FIFO requirements.

Parameter Comparison

Engineering Selection Recommendations

XR88C92CJ-F (Recommended Primary Substitute)

The XR88C92CJ-F is the preferred substitute for the obsolete SC26C92C1A,512. This part maintains identical FIFO depth (8-byte), dual-channel UART architecture, and auto flow control functionality. The XR88C92CJ-F carries active product status, ensuring long-term availability and supply chain stability. Both parts are ROHS3 compliant and share the same 44-PLCC package footprint. The XR88C92CJ-F offers improved moisture sensitivity rating (MSL 1 vs. MSL 3) and extended supply voltage range (2.97V ~ 5.5V), providing greater design flexibility.

XR88C681CJ-F (Secondary Substitute)

The XR88C681CJ-F serves as an alternative for applications where reduced FIFO depth (3-byte) is acceptable. This part maintains the dual-channel UART architecture and 44-PLCC package compatibility. The XR88C681CJ-F carries last-time-buy status; procurement should be prioritized if this part is selected. This substitute does not include auto flow control or modem control features, limiting its applicability to designs not requiring these functions.

Frequently Asked Questions (FAQ)

Q: Can the XR88C92CJ-F directly replace the SC26C92C1A,512 without PCB modifications?

A: Yes. Both parts use the 44-PLCC (16.59x16.59) package with identical pinout compatibility for dual-channel UART operation. No PCB layout changes are required for footprint accommodation.

Q: What is the primary difference between the XR88C92CJ-F and XR88C681CJ-F?

A: The XR88C92CJ-F maintains 8-byte FIFO depth per channel and includes auto flow control, matching the original SC26C92C1A,512 specification. The XR88C681CJ-F reduces FIFO depth to 3 bytes and omits auto flow control and modem control features. Select the XR88C92CJ-F for direct functional equivalence.

Q: Are there supply voltage compatibility concerns when substituting?

A: The XR88C92CJ-F operates across 2.97V ~ 5.5V, providing broader voltage range support than the original 5V specification. The XR88C681CJ-F operates at 5V, matching the original specification. Both parts are compatible with 5V system designs.

Q: What is the significance of product status in selecting a substitute?

A: The XR88C92CJ-F carries active product status, indicating ongoing manufacturing and long-term availability. The XR88C681CJ-F is last-time-buy, meaning production will cease and inventory is limited. For new designs, the XR88C92CJ-F is the appropriate selection.

Q: Do the substitute parts maintain RoHS compliance?

A: Yes. Both XR88C92CJ-F and XR88C681CJ-F are RoHS compliant. The XR88C92CJ-F is ROHS3 compliant, matching the original part. The XR88C681CJ-F is RoHS compliant, meeting environmental regulatory requirements.

Q: What is the impact of MSL rating differences?

A: The original SC26C92C1A,512 carries MSL 3 (168-hour moisture sensitivity limit). Both substitutes carry MSL 1 (unlimited moisture sensitivity), indicating superior moisture resistance and reduced risk during storage and assembly processes.