N74F175AD,623 Equivalent & Substitute Parts

Part Overview

The N74F175AD,623 is a D-Type flip-flop logic integrated circuit manufactured by NXP USA Inc., designed for 4-bit positive edge-triggered applications. This component features complementary outputs and is housed in a 16-SOIC surface mount package. The part is currently classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and production continuity.

Substiute Parts

N74F175AD,623

NXP USA Inc.In Stock: 819N74F175AD,623 Datasheet

Current PartRFQ

SN74F175D

Texas InstrumentsIn Stock: 2301SN74F175D Datasheet

DirectRFQ

SN74F175DR

Texas InstrumentsIn Stock: 3728SN74F175DR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the N74F175AD,623 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Functional Equivalence Criteria:

• Base product number: 74F175
• Type: D-Type flip-flop
• Number of elements: 1
• Number of bits per element: 4
• Output type: Complementary
• Trigger type: Positive Edge
• Voltage supply range: 4.5V ~ 5.5V
• Operating temperature range: 0°C ~ 70°C

Mechanical Compatibility Criteria:

• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Mounting type: Surface Mount

Compliance Criteria:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute parts listed below meet all functional and mechanical requirements. Variations in clock frequency and quiescent current within the 74F175 family do not preclude substitution, as these parameters remain within acceptable operating margins for the specified voltage and temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

SN74F175DR (Texas Instruments) - Recommended Primary Substitute

The SN74F175DR is the preferred substitute for the obsolete N74F175AD,623. This part carries Active product status, ensuring long-term availability and supply chain stability. It is supplied in Tape & Reel packaging, which is standard for high-volume production environments. All functional and mechanical parameters align with the original part, and ROHS3 compliance and MSL 1 rating are maintained.

SN74F175D (Texas Instruments) - Secondary Substitute

The SN74F175D provides functional equivalence and meets all electrical and mechanical requirements. However, this part is classified as Last Time Buy, indicating limited future availability. It is supplied in Tube packaging, which may be suitable for lower-volume applications or prototype work. Selection of this part should account for potential supply constraints.

Both Texas Instruments substitutes are manufactured to the same 74F175 specification and are pin-compatible with the original NXP part in the 16-SOIC package.

Frequently Asked Questions (FAQ)

Q: Can SN74F175D and SN74F175DR be used interchangeably with N74F175AD,623?

A: Yes. Both Texas Instruments parts are functionally and mechanically equivalent. They share identical pin configurations, electrical characteristics within specified tolerances, and package dimensions. The primary difference is product status and packaging format.

Q: What is the significance of the product status difference (Obsolete vs. Last Time Buy vs. Active)?

A: Product status indicates supply availability. The N74F175AD,623 is obsolete and no longer manufactured. SN74F175D is Last Time Buy, meaning production will cease but existing inventory may be available for a limited period. SN74F175DR is Active, indicating ongoing production and long-term availability. For new designs or sustained production, SN74F175DR is the appropriate choice.

Q: Are there differences in quiescent current between the parts?

A: The N74F175AD,623 specifies 31 mA quiescent current, while both Texas Instruments substitutes specify 34 mA. This 3 mA difference is within normal manufacturing tolerances for the 74F175 family and does not affect circuit functionality or compliance with the specified 4.5V ~ 5.5V supply range.

Q: What packaging formats are available, and how do they affect procurement?

A: The N74F175AD,623 packaging format is not specified in the data. SN74F175D is supplied in Tube packaging, suitable for manual handling and lower-volume applications. SN74F175DR is supplied in Tape & Reel format, optimized for automated assembly and high-volume production. Selection depends on manufacturing process requirements.

Q: Are all three parts RoHS compliant?

A: Yes. The N74F175AD,623, SN74F175D, and SN74F175DR are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and reliability standards.

Q: Can the clock frequency difference (160 MHz vs. 140 MHz) affect circuit performance?

A: No. The clock frequency specification indicates the maximum operating frequency. The N74F175AD,623 supports 160 MHz operation, while the Texas Instruments substitutes support 140 MHz. In applications operating below 140 MHz, both substitutes function identically. In applications requiring operation above 140 MHz, the original part specifications must be maintained.