SN74AS174DRG4 Equivalent & Substitute Parts

Part Overview

The SN74AS174DRG4 is a D-Type flip-flop logic integrated circuit manufactured by Texas Instruments, featuring 1 element with 6-bit configuration in a 16-SOIC surface mount package. This component functions as a master reset flip-flop with tri-state, non-inverted outputs and operates at clock frequencies up to 100 MHz.

The SN74AS174DRG4 is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

SN74AS174DRG4

Texas InstrumentsIn Stock: 705SN74AS174DRG4 Datasheet

Current PartRFQ

SN74AS174D

Texas InstrumentsIn Stock: 1085SN74AS174D Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN74AS174DRG4 is determined by strict equivalence across the following critical parameters:

• Logic Function: D-Type flip-flop with 1 element, 6-bit configuration, master reset capability
• Output Characteristics: Tri-state, non-inverted outputs
• Electrical Performance: 100 MHz clock frequency, 10 ns maximum propagation delay @ 5V/50pF, positive edge trigger
• Power Supply: 4.5V ~ 5.5V operating range
• Output Drive Capability: 2mA high, 20mA low
• Quiescent Current: 45 mA
• Temperature Range: 0°C ~ 70°C
• Package: 16-SOIC surface mount form factor with 0.154" (3.90mm) width
• Compliance: ROHS3 compliant, REACH unaffected

All substitute parts must match these parameters without exception to ensure functional and electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SN74AS174D is a direct functional equivalent to the SN74AS174DRG4. Both components are manufactured by Texas Instruments and share identical electrical specifications, logic function, and package configuration. The primary distinction is product status: the SN74AS174DRG4 is obsolete, while the SN74AS174D maintains active status.

Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The SN74AS174D is the recommended substitute for new designs, repairs, and production continuity where the SN74AS174DRG4 is no longer available. Packaging differs only in supplier delivery format (tube versus reel), which does not affect component functionality or electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the SN74AS174D replace the SN74AS174DRG4 in existing designs?

A: Yes. The SN74AS174D is electrically and functionally identical to the SN74AS174DRG4. All electrical parameters, logic function, timing characteristics, and package dimensions are equivalent. The only difference is product status and packaging format.

Q: What is the difference between SN74AS174DRG4 and SN74AS174D?

A: The SN74AS174DRG4 is supplied in reel packaging and is classified as obsolete. The SN74AS174D is supplied in tube packaging and maintains active product status. Electrical specifications and package form factor are identical.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist. Both parts use the same 16-SOIC surface mount package with identical pinout, electrical characteristics, and operating parameters. Direct substitution is possible without circuit modification.

Q: Do both parts meet current compliance standards?

A: Yes. Both the SN74AS174DRG4 and SN74AS174D are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of the product status difference?

A: The SN74AS174DRG4 is obsolete and no longer manufactured. The SN74AS174D is actively produced by Texas Instruments, ensuring ongoing availability for new designs and production requirements.