TLK1521IPAP Equivalent & Substitute Parts

Part Overview

The TLK1521IPAP is a 1.3Gbps 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 VML output types, operating across a 2.3V to 2.7V supply voltage range. The product is currently classified as obsolete, necessitating identification of functionally compatible alternatives for ongoing system support and new designs requiring equivalent performance characteristics.

Substiute Parts

TLK1521IPAP

Texas InstrumentsIn Stock: 1197TLK1521IPAP Datasheet

Current PartRFQ

TLK1501IRCP

Texas InstrumentsIn Stock: 1604TLK1501IRCP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLK1521IPAP is determined by the following critical parameters:

• Data Rate Compatibility: Substitute parts must support equal or higher data rates (minimum 1.3Gbps)
• Supply Voltage Range: Must operate within or encompass the 2.3V to 2.7V range
• Operating Temperature Range: Must support the -40°C to 85°C specification
• Serializer/Deserializer Function: Core functionality must remain consistent
• Input/Output Configuration: Channel count and signal type compatibility
• Package Compatibility: Surface mount configuration with compatible pinout
• Compliance Standards: RoHS3 compliance and MSL rating requirements

The TLK1501IRCP qualifies as a manufacturer-recommended substitute based on these parameters, offering enhanced data rate capability (1.5Gbps) while maintaining core operational specifications and compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

The TLK1501IRCP is designated as the manufacturer-recommended substitute for the obsolete TLK1521IPAP. Selection of this alternative is supported by the following factors:

• Product Status: The TLK1501IRCP maintains active product status, ensuring continued availability and manufacturing support
• Compliance Alignment: Both components maintain ROHS3 compliance and identical MSL ratings, satisfying regulatory and handling requirements
• Performance Enhancement: The TLK1501IRCP provides increased data rate capability (1.5Gbps versus 1.3Gbps) while maintaining identical supply voltage and operating temperature specifications
• Supply Voltage Compatibility: Both parts operate within the identical 2.3V to 2.7V range
• Thermal Performance: Operating temperature range remains consistent at -40°C to 85°C

Frequently Asked Questions (FAQ)

Q: What are the key differences between TLK1521IPAP and TLK1501IRCP?

A: The primary differences are data rate (1.3Gbps versus 1.5Gbps), output type (VML versus CML), channel configuration (18/1 versus 16/1 inputs, 1/18 versus 1/16 outputs), package variant (64-PowerTQFP versus 64-PowerVFQFP), and product status (obsolete versus active). Supply voltage and operating temperature specifications remain identical.

Q: Can TLK1501IRCP directly replace TLK1521IPAP in existing designs?

A: Direct replacement requires verification of output type compatibility (CML versus VML) and channel count requirements. The reduced input/output channel count (16/1 and 1/16 versus 18/1 and 1/18) must be evaluated against system architecture. Package footprint differences between 64-PowerTQFP and 64-PowerVFQFP require PCB layout assessment.

Q: Are compliance certifications equivalent between these parts?

A: Both components maintain ROHS3 compliance and identical MSL ratings (3, 168 Hours), satisfying equivalent regulatory and handling requirements.

Q: What is the significance of the output type difference (VML versus CML)?

A: Output type represents the signal standard used for data transmission. VML and CML are distinct signaling standards with different electrical characteristics. System compatibility with the receiving interface must be confirmed before substitution.

Q: Does the higher data rate of TLK1501IRCP affect compatibility?

A: Higher data rate capability does not create incompatibility. The TLK1501IRCP can operate at or below the 1.3Gbps specification of the original part, provided the receiving system supports the CML output standard.