SN74HC590AD 8-Bit Binary Counter Equivalent & Substitute Parts

Part Overview

The SN74HC590AD is an 8-bit binary counter IC manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This logic component functions as a positive edge-triggered counter with asynchronous reset capability, operating across a 2V to 6V supply voltage range with a maximum count rate of 24 MHz. The SN74HC590AD is classified as Last Time Buy, indicating discontinued production. Identifying equivalent and substitute parts is essential for ongoing design support, procurement continuity, and system maintenance where this component is currently deployed.

Substiute Parts

SN74HC590AD

Texas InstrumentsIn Stock: 912SN74HC590AD Datasheet

Current PartRFQ

SN74HC590ADR

Texas InstrumentsIn Stock: 3403SN74HC590ADR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74HC590AD is determined by strict equivalence across the following critical parameters:

• Logic Function: Binary counter with identical 8-bit architecture and single element configuration
• Electrical Characteristics: Positive edge trigger, asynchronous reset, 24 MHz count rate capability
• Supply Voltage: 2V to 6V operating range
• Temperature Range: -40°C to 85°C operational specification
• Package Compatibility: 16-SOIC surface mount package with identical pinout and mechanical dimensions
• Compliance Standards: ROHS3 compliance and MSL Level 1 rating

The SN74HC590ADR qualifies as a direct substitute based on identical functional specifications, electrical performance parameters, and package configuration. The primary distinction between these parts is packaging format: the SN74HC590AD is supplied in Tube packaging, while the SN74HC590ADR is available in Cut Tape (CT) and Digi-Reel® formats.

Parameter Comparison

Engineering Selection Recommendations

The SN74HC590ADR is the direct functional equivalent of the SN74HC590AD. Both parts are manufactured by Texas Instruments and share identical electrical specifications, pin configurations, and performance characteristics across all critical parameters including count rate, voltage supply range, temperature operating range, and package dimensions.

The SN74HC590AD carries Last Time Buy status, indicating production discontinuation. The SN74HC590ADR maintains Active product status with significantly higher inventory availability (3334 Pcs versus 839 Pcs), ensuring long-term procurement viability and supply chain continuity.

Both parts maintain ROHS3 compliance and MSL Level 1 rating, satisfying equivalent environmental and reliability standards. The substitution is electrically and mechanically transparent, with no design modifications required for component replacement.

Frequently Asked Questions (FAQ)

Q: Can the SN74HC590ADR directly replace the SN74HC590AD in existing designs?

A: Yes. The SN74HC590ADR is a direct substitute with identical pinout, electrical performance, and package dimensions. No circuit modifications are required.

Q: What is the difference between these two part numbers?

A: The primary difference is packaging format. The SN74HC590AD is supplied in Tube packaging, while the SN74HC590ADR is available in Cut Tape (CT) and Digi-Reel® formats. Electrical and functional specifications are identical.

Q: Why is the SN74HC590AD marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued production of this part number. The SN74HC590ADR remains in active production and is the recommended alternative for new designs and ongoing procurement.

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

A: No. Both parts maintain identical ROHS3 compliance status and MSL Level 1 rating.

Q: What is the 16-SOIC package specification?

A: 16-SOIC refers to a 16-pin Small Outline Integrated Circuit package with 0.154 inches (3.90mm) body width, designed for surface mount assembly on PCBs.

Q: Can I use the SN74HC590ADR in high-temperature applications?

A: Yes. The SN74HC590ADR operates across the -40°C to 85°C temperature range, suitable for industrial and extended temperature applications within this specification.