SN74AHCT08RGYRG4 Equivalent & Substitute Parts

Part Overview

The SN74AHCT08RGYRG4 is a 4-channel AND gate logic IC manufactured by Texas Instruments in a 14-VQFN (4.6x4.6) surface mount package. This component is discontinued at DiGi Electronics but remains available in inventory (658 pcs new original stock). The part operates across a 4.5V to 5.5V supply voltage range with a maximum propagation delay of 7.9ns at 5V with 50pF load. Finding equivalent substitute parts is necessary due to the discontinued product status and to ensure long-term supply chain continuity for new designs or production runs.

Substiute Parts

SN74AHCT08RGYRG4

Texas InstrumentsIn Stock: 742SN74AHCT08RGYRG4 Datasheet

Current PartRFQ

SN74AHCT08RGYR

Texas InstrumentsIn Stock: 6918SN74AHCT08RGYR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74AHCT08RGYRG4 is determined by strict equivalence across the following critical parameters:

• Logic function: AND Gate with 4 channels and 2 inputs per channel
• Electrical specifications: 4.5V ~ 5.5V supply voltage, 2 µA maximum quiescent current, 8mA output drive capability, 7.9ns propagation delay at 5V with 50pF load
• Input logic thresholds: 0.8V low level, 2V high level
• Operating temperature range: -40°C ~ 125°C
• Package form factor: 14-VFQFN Exposed Pad surface mount configuration
• Compliance certifications: ROHS3 Compliant, REACH Unaffected

The SN74AHCT08RGYR meets all these criteria and qualifies as a parametric equivalent. The primary distinction between the main part and its substitute is packaging format (individual unit versus tape & reel) and product status (discontinued versus active).

Parameter Comparison

Engineering Selection Recommendations

The SN74AHCT08RGYR is a direct parametric equivalent to the SN74AHCT08RGYRG4. Both parts share identical electrical characteristics, logic function, operating temperature range, and package specifications. The substitute part maintains ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment.

The primary advantage of selecting SN74AHCT08RGYR is its active product status with significantly higher inventory availability (6883 pcs versus 658 pcs). For applications requiring volume production or long-term supply assurance, the active substitute part is the appropriate selection. Both parts are functionally interchangeable at the circuit level with no design modifications required.

Frequently Asked Questions (FAQ)

Q: Are SN74AHCT08RGYRG4 and SN74AHCT08RGYR electrically identical?

A: Yes. Both parts are parametric equivalents with identical logic function (4-channel AND gate), electrical specifications (supply voltage, quiescent current, output drive, propagation delay), input thresholds, and operating temperature range. They are functionally interchangeable in circuit applications.

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

A: The primary differences are packaging format and product status. SN74AHCT08RGYRG4 is supplied as individual units and is discontinued at DiGi Electronics. SN74AHCT08RGYR is supplied in tape & reel format and maintains active product status with higher inventory levels.

Q: Can I use SN74AHCT08RGYR as a direct replacement in my design?

A: Yes. The substitute part has identical pin configuration, package footprint (14-VFQFN Exposed Pad), and electrical performance. No PCB layout or schematic modifications are required for substitution.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity level (MSL 2, 1 Year). Regulatory and environmental compliance requirements are met by both parts.

Q: Which part should I specify for new designs?

A: SN74AHCT08RGYR is recommended for new designs due to its active product status and superior supply chain availability. This ensures long-term component sourcing and production continuity.