SN74ALS193ADR Equivalent & Substitute Parts

Part Overview

The SN74ALS193ADR is a 4-bit binary counter IC manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This component functions as a synchronous up/down counter with asynchronous reset capability, designed for digital logic applications requiring precise counting operations at frequencies up to 30 MHz. The part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

SN74ALS193ADR

Texas InstrumentsIn Stock: 876SN74ALS193ADR Datasheet

Current PartRFQ

SN74ALS193AD

Texas InstrumentsIn Stock: 852SN74ALS193AD Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74ALS193ADR is determined by strict equivalence across the following critical parameters:

• Logic Type: Binary Counter (4-bit configuration)
• Directional Capability: Up/Down counting functionality
• Count Rate: 30 MHz maximum frequency
• Voltage Supply Range: 4.5 V ~ 5.5 V
• Package Configuration: 16-SOIC surface mount
• Reset Architecture: Asynchronous reset
• Timing Mode: Synchronous operation
• Operating Temperature Range: 0°C ~ 70°C

The SN74ALS193AD qualifies as a direct substitute based on complete alignment with all specified electrical and mechanical parameters. The primary distinction between the main part and its substitute is product status and packaging format, not functional capability.

Parameter Comparison

Engineering Selection Recommendations

The SN74ALS193AD is the manufacturer-recommended substitute for the obsolete SN74ALS193ADR. Both components maintain identical electrical specifications, package geometry, and pin configuration. The SN74ALS193AD carries active product status from Texas Instruments, ensuring continued availability and manufacturing support. Both parts satisfy ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. Selection of the SN74ALS193AD eliminates obsolescence risk while preserving full functional compatibility with existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the SN74ALS193AD directly replace the SN74ALS193ADR in existing designs?

A: Yes. Both parts are electrically and mechanically identical. Pin configuration, package dimensions, and all functional parameters are equivalent. No circuit modifications are required.

Q: What is the difference between the SN74ALS193ADR and SN74ALS193AD?

A: The primary differences are product status and packaging format. The SN74ALS193ADR is obsolete and supplied in Digi-Reel format, while the SN74ALS193AD is active and supplied in Tube packaging. All electrical and mechanical specifications are identical.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical environmental certifications. Regulatory compliance is equivalent.

Q: What is the significance of the "ADR" and "AD" suffix in the part numbers?

A: The suffix indicates packaging and distribution format. "ADR" denotes Digi-Reel packaging for the obsolete variant, while "AD" denotes Tube packaging for the active variant. The base product number 74ALS193 remains constant.

Q: Is the 16-SOIC package suitable for automated assembly?

A: Yes. The 16-SOIC package is a standard surface mount configuration compatible with automated pick-and-place and reflow soldering processes. Package dimensions are 0.154" width with 3.90mm body width.

Q: What is the maximum operating frequency for these counter ICs?

A: Both parts support a maximum count rate of 30 MHz under specified voltage and temperature conditions.