TLK2521IPAPG4 Equivalent & Substitute Parts

Part Overview

The TLK2521IPAPG4 is a 2.5Gbps Serializer/Deserializer interface IC manufactured by Texas Instruments, housed in a 64-HTQFP package. This component features 18/1 input and 1/18 output configuration with LVTTL input and TTL/VML output types, operating across a 2.3V to 2.7V supply voltage range. The device is classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and ongoing system support.

Substiute Parts

TLK2521IPAPG4

Texas InstrumentsIn Stock: 918TLK2521IPAPG4 Datasheet

Current PartRFQ

TLK2501IRCP

Texas InstrumentsIn Stock: 3721TLK2501IRCP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLK2521IPAPG4 is determined by the following critical parameters:

Core Functional Requirements:

• Data rate capability of 2.5Gbps minimum
• Serializer/Deserializer functionality
• LVTTL input compatibility
• Supply voltage range of 2.3V to 2.7V
• Operating temperature range of -40°C to 85°C

Physical and Compliance Requirements:

• Surface mount package format
• 64-pin configuration with 10x10mm footprint
• ROHS3 compliance
• MSL rating of 3 or better

The TLK2501IRCP qualifies as a manufacturer-recommended substitute based on matching these core parameters while maintaining functional compatibility within the 2.5Gbps serializer/deserializer category.

Parameter Comparison

Engineering Selection Recommendations

The TLK2501IRCP is designated as the manufacturer-recommended substitute for the obsolete TLK2521IPAPG4. Both devices maintain identical supply voltage specifications (2.3V to 2.7V) and operating temperature ranges (-40°C to 85°C), ensuring thermal and electrical compatibility in existing system designs.

Both components carry ROHS3 compliance and equivalent MSL ratings, satisfying regulatory and manufacturing process requirements. The TLK2501IRCP's active product status provides assured long-term availability and manufacturing support, addressing the obsolescence constraint of the original part.

Differences in input/output channel count (18/1 versus 16/1) and output type (TTL/VML versus CML) require circuit-level evaluation to confirm functional equivalence within specific application contexts.

Frequently Asked Questions (FAQ)

Q: Can the TLK2501IRCP directly replace the TLK2521IPAPG4 in existing designs?

A: Direct replacement requires verification of channel count requirements and output signal type compatibility. The TLK2501IRCP provides 16 input/output channels versus 18 on the original part, and uses CML output instead of TTL/VML. Circuit design review is necessary to confirm functional fit.

Q: Are the package footprints compatible between these parts?

A: Both devices use 64-pin packages with 10x10mm footprints. The TLK2521IPAPG4 uses 64-HTQFP while the TLK2501IRCP uses 64-HVQFP. Physical pin compatibility must be verified against specific PCB layout and manufacturer documentation.

Q: What is the significance of the product status difference?

A: The TLK2521IPAPG4 is classified as obsolete, indicating discontinued manufacturing and limited future availability. The TLK2501IRCP maintains active status, ensuring continued production, technical support, and supply chain reliability for new and ongoing applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the TLK2521IPAPG4 and TLK2501IRCP are ROHS3 compliant with identical MSL ratings of 3 (168 Hours), satisfying equivalent regulatory and manufacturing requirements.

Q: What are the data rate specifications for each part?

A: The TLK2521IPAPG4 operates at 2.5Gbps fixed data rate. The TLK2501IRCP supports a range of 1.6Gbps to 2.5Gbps, providing operational flexibility within the 2.5Gbps maximum threshold.