SN74LS590DR Equivalent & Substitute Parts

Part Overview

The SN74LS590DR is an 8-bit binary counter IC manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This component functions as a positive edge-triggered counter with asynchronous reset capability, designed for digital logic applications requiring binary counting operations. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement planning. Substitute parts must maintain identical electrical specifications and package compatibility to ensure direct replacement without circuit redesign.

Substiute Parts

SN74LS590DR

Texas InstrumentsIn Stock: 5685SN74LS590DR Datasheet

Current PartRFQ

SN74LS590D

Texas InstrumentsIn Stock: 814SN74LS590D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74LS590DR is determined by strict equivalence across the following critical parameters:

• Logic Function: Binary counter with 8-bit capacity, single element configuration
• Electrical Characteristics: 35 MHz count rate, positive edge trigger, asynchronous reset
• Power Supply: 4.75 V to 5.25 V operating range
• Temperature Range: 0°C to 70°C industrial operating window
• Package Specification: 16-SOIC surface mount package with 0.154" (3.90mm) width
• Series Compatibility: 74LS logic family

The SN74LS590D qualifies as a direct substitute based on complete alignment with all specified electrical and mechanical parameters. The primary distinction between the main part and substitute relates to product status and packaging format, not functional capability.

Parameter Comparison

Engineering Selection Recommendations

The SN74LS590D is the manufacturer-recommended substitute for the obsolete SN74LS590DR. Both parts maintain identical electrical performance specifications and physical package dimensions, enabling direct functional replacement. The SN74LS590D carries active product status, ensuring continued availability and manufacturing support from Texas Instruments. Both parts satisfy ROHS3 compliance and REACH regulatory requirements, maintaining equivalent environmental and safety certifications. Selection of the SN74LS590D eliminates obsolescence risk while preserving circuit functionality and performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can the SN74LS590D replace the SN74LS590DR in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The 16-SOIC package dimensions, pin configuration, and electrical characteristics are equivalent, permitting direct substitution without circuit modification.

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

A: The SN74LS590DR is classified as obsolete, while the SN74LS590D maintains active product status. This distinction affects long-term availability and procurement strategy, not functional performance.

Q: Are there packaging format differences between these parts?

A: The SN74LS590DR is supplied in dip packaging, while the SN74LS590D is supplied in tube packaging. Both use the identical 16-SOIC case style with matching pin assignments and electrical specifications.

Q: Do both parts meet current regulatory compliance standards?

A: Yes. Both the SN74LS590DR and SN74LS590D are ROHS3 compliant and REACH unaffected, satisfying current environmental and safety regulations.

Q: What are the critical parameters for confirming substitution compatibility?

A: Verify alignment on logic type (binary counter), bit width (8-bit), trigger mechanism (positive edge), reset configuration (asynchronous), count rate (35 MHz), supply voltage range (4.75 V to 5.25 V), operating temperature (0°C to 70°C), and package specification (16-SOIC surface mount).