DS1004Z-4+ Equivalent & Substitute Parts

Part Overview

The DS1004Z-4+ is a nonprogrammable delay line IC manufactured by Analog Devices Inc./Maxim Integrated, featuring 5 taps with a total delay of 21ns in an 8-SOIC surface mount package. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations. The DS1004Z-4+ operates within a supply voltage range of 4.75V to 5.25V and is suitable for applications requiring fixed delay line functionality in timing-critical circuits.

Substiute Parts

DS1004Z-4+

Analog Devices Inc./Maxim IntegratedIn Stock: 957DS1004Z-4+ Datasheet

Current PartRFQ

DS1100Z-20+

Analog Devices Inc./Maxim IntegratedIn Stock: 2552DS1100Z-20+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DS1004Z-4+ is determined by the following critical parameters that must remain compatible:

Mandatory Compatibility Parameters:

• Number of Taps/Steps: 5 taps (fixed requirement)
• Function: Nonprogrammable (fixed requirement)
• Package / Case: 8-SOIC (0.154", 3.90mm Width) (physical and electrical compatibility)
• Mounting Type: Surface Mount (assembly compatibility)
• Voltage - Supply: 4.75V ~ 5.25V (electrical compatibility)
• Number of Independent Delays: 1 (functional requirement)

Allowable Variation Parameters:

• Available Total Delays: May vary within acceptable system timing margins
• Delay to 1st Tap: May vary within acceptable system timing margins
• Tap Increment: May vary within acceptable system timing margins
• Operating Temperature: May extend beyond the original range (wider range acceptable)
• Product Status: Active status preferred for long-term availability

The DS1100Z-20+ qualifies as a direct substitute based on matching all mandatory compatibility parameters while offering extended operating temperature range and active product status.

Parameter Comparison

Engineering Selection Recommendations

The DS1100Z-20+ is a qualified substitute for the DS1004Z-4+ based on the following engineering criteria:

Compliance & Certification Alignment: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility in applications subject to environmental restrictions.

Product Status Advantage: The DS1100Z-20+ carries active product status, providing assured long-term availability and supply chain stability compared to the obsolete DS1004Z-4+. This is a critical consideration for production continuity and future system support.

Electrical & Physical Compatibility: Identical supply voltage range (4.75V ~ 5.25V), matching 8-SOIC package dimensions, and identical tap configuration (5 taps, nonprogrammable, 1 independent delay) ensure direct functional compatibility in existing circuit designs.

Operating Temperature Extension: The DS1100Z-20+ extends the operating temperature range to -40°C ~ 85°C, providing broader environmental capability compared to the original 0°C ~ 70°C specification. This represents an enhancement for applications requiring extended temperature performance.

Delay Specification Variance: The DS1100Z-20+ provides 20ns total delay versus 21ns in the DS1004Z-4+, with first tap delay of 4ns versus 5ns. This 1ns reduction in total delay and 1ns reduction in first tap delay must be evaluated against system timing requirements to confirm compatibility.

Frequently Asked Questions (FAQ)

Q: Can the DS1100Z-20+ be used as a direct replacement for the DS1004Z-4+ in existing designs?

A: The DS1100Z-20+ is electrically and physically compatible with the DS1004Z-4+ due to matching package, tap configuration, supply voltage, and nonprogrammable function. However, the 1ns reduction in total delay (20ns vs. 21ns) and 1ns reduction in first tap delay (4ns vs. 5ns) must be verified against system timing margins before implementation.

Q: What is the significance of the product status difference between these parts?

A: The DS1004Z-4+ is classified as obsolete, indicating discontinued manufacturing and limited availability. The DS1100Z-20+ maintains active status, ensuring ongoing production, established supply chains, and long-term component availability for production and support applications.

Q: Are the package dimensions identical between these parts?

A: Yes. Both the DS1004Z-4+ and DS1100Z-20+ use the 8-SOIC (0.154", 3.90mm Width) package, ensuring identical PCB footprint and assembly compatibility.

Q: How do the operating temperature ranges differ?

A: The DS1004Z-4+ operates from 0°C to 70°C, while the DS1100Z-20+ operates from -40°C to 85°C. The DS1100Z-20+ provides extended temperature capability suitable for applications requiring broader environmental performance.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the DS1004Z-4+ and DS1100Z-20+ are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for restricted substance use.

Q: What is the significance of the delay specification differences?

A: The DS1100Z-20+ provides 1ns less total delay and 1ns less first tap delay compared to the DS1004Z-4+. Both maintain identical 4ns tap increment spacing. System timing analysis is required to confirm that the reduced delay values remain compatible with circuit requirements.