DS1135LU-15 Equivalent & Substitute Parts

Part Overview

The DS1135LU-15 is a delay line IC manufactured by Analog Devices Inc./Maxim Integrated, designed for clock and timing applications. This component provides multiple, non-programmable tap delays with a 15ns delay to the first tap, housed in an 8-TSSOP/8-MSOP surface mount package. The part is currently classified as obsolete, which necessitates identification of active equivalent alternatives to maintain design continuity and ensure long-term component availability for new production runs and system maintenance.

Substiute Parts

DS1135LU-15

Analog Devices Inc./Maxim IntegratedIn Stock: 902DS1135LU-15 Datasheet

Current PartRFQ

DS1135LU-15+

Analog Devices Inc./Maxim IntegratedIn Stock: 929DS1135LU-15+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS1135LU-15 is determined by strict equivalence across the following critical parameters:

• Functional Specification: Multiple, non-programmable delay line configuration
• Delay Characteristics: 15ns delay to first tap with 15ns total available delays and 3 independent delay outputs
• Electrical Performance: 2.7V to 3.6V supply voltage range and -40°C to 85°C operating temperature range
• Physical Form Factor: 8-TSSOP/8-MSOP surface mount package with 0.118" (3.00mm) width
• Pin Configuration: 8-pin device in 8-uMAX/uSOP supplier package format

The DS1135LU-15+ meets all these criteria and qualifies as a direct substitute. The primary distinction between the main part and its substitute is product status and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The DS1135LU-15+ is the direct equivalent substitute for the DS1135LU-15. Selection between these parts should be based on the following criteria:

For New Designs and Production: The DS1135LU-15+ is the appropriate choice. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance, ensuring regulatory alignment and long-term supply chain viability.

For Legacy System Maintenance: The DS1135LU-15 remains available in inventory (892 units) for applications requiring the original part number. However, transition to the DS1135LU-15+ is recommended for future procurement cycles to align with current environmental and regulatory standards.

Compliance Considerations: The DS1135LU-15+ carries ROHS3 compliance certification, whereas the original DS1135LU-15 is RoHS non-compliant. This distinction is material for applications subject to RoHS directives or customer environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can the DS1135LU-15+ be used as a direct replacement for the DS1135LU-15 in existing designs?

A: Yes. The DS1135LU-15+ is electrically and mechanically identical to the DS1135LU-15. All functional parameters, delay characteristics, supply voltage range, operating temperature range, and package specifications are equivalent. No circuit modifications are required.

Q: What is the primary difference between these two parts?

A: The DS1135LU-15 is classified as obsolete, while the DS1135LU-15+ is an active product. Additionally, the DS1135LU-15+ is ROHS3 compliant, whereas the DS1135LU-15 is RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Are there any package or pinout differences?

A: No. Both parts use the identical 8-TSSOP/8-MSOP surface mount package with 0.118" (3.00mm) width and 8-pin 8-uMAX/uSOP configuration. Direct PCB layout compatibility is maintained.

Q: Which part should be specified for new production designs?

A: The DS1135LU-15+ should be specified for all new designs. This part offers active product status, ensuring continued availability and support, along with ROHS3 compliance for regulatory alignment.

Q: Is the DS1135LU-15 still available for purchase?

A: The DS1135LU-15 is classified as obsolete but remains available in inventory (892 units in stock). However, availability is limited and may diminish over time. The DS1135LU-15+ is the recommended long-term alternative.

Q: Do these parts have identical delay specifications?

A: Yes. Both parts provide 15ns delay to the first tap, 15ns total available delays, and 3 independent delay outputs. Timing performance is identical across all delay parameters.