SN74HC05DBR Equivalent & Substitute Parts

Part Overview

The SN74HC05DBR is a 6-channel inverter IC with open-drain outputs in a 14-SSOP surface mount package, manufactured by Texas Instruments. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and production continuity. The SN74HC05 series provides logic inversion functionality suitable for applications requiring open-drain output configurations across a 2V to 6V supply voltage range.

Substiute Parts

SN74HC05DBR

Texas InstrumentsIn Stock: 783SN74HC05DBR Datasheet

Current PartRFQ

SN74HC05DR

Texas InstrumentsIn Stock: 3928SN74HC05DR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74HC05DBR is determined by the following critical parameters:

• Logic type and circuit configuration (6-channel inverter with open-drain outputs)
• Electrical specifications (2V ~ 6V supply voltage, 20ns propagation delay, 5.2mA output current)
• Operating temperature range (-40°C ~ 85°C)
• Functional pin compatibility within the 74HC05 base product family
• Surface mount packaging with equivalent pin count and spacing

The SN74HC05DR qualifies as a direct substitute based on identical electrical performance and functional characteristics. The primary difference is packaging format: the SN74HC05DR uses 14-SOIC instead of 14-SSOP, which affects board layout and assembly considerations but maintains full electrical equivalence.

Parameter Comparison

Engineering Selection Recommendations

The SN74HC05DR is the qualified substitute for the SN74HC05DBR. Both devices maintain identical electrical specifications and functional performance. The SN74HC05DR holds active product status with Texas Instruments, ensuring continued availability and supply chain stability compared to the obsolete SN74HC05DBR.

Both parts comply with ROHS3 and REACH requirements, with EAR99 export classification. Selection between these parts depends on packaging constraints: the SN74HC05DR in 14-SOIC format offers a narrower package width (3.90mm versus 5.30mm), which may influence PCB layout density and assembly compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SN74HC05DR directly replace the SN74HC05DBR?

A: Yes. Both devices provide identical electrical performance, logic functionality, and pin configuration. The substitution is valid from an electrical standpoint. PCB layout modifications may be required due to package footprint differences between 14-SSOP and 14-SOIC formats.

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

A: The SN74HC05DBR uses 14-SSOP packaging (5.30mm width), while the SN74HC05DR uses 14-SOIC packaging (3.90mm width). All electrical specifications and functional characteristics are identical.

Q: Why is the SN74HC05DBR listed as obsolete?

A: Product status reflects Texas Instruments' manufacturing and support decisions. The SN74HC05DR remains in active production, making it the recommended choice for new designs and ongoing production requirements.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical RoHS3 compliance, REACH status, and EAR99 export classification.

Q: What packaging considerations apply when switching from SN74HC05DBR to SN74HC05DR?

A: The 14-SOIC package is narrower than 14-SSOP, which may allow for increased PCB density. However, footprint and land pattern designs differ, requiring PCB layout updates and potential assembly process adjustments.