74HC173N,652 Equivalent & Substitute Parts

Part Overview

The 74HC173N,652 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 tri-state, non-inverted outputs and operates across a 2V to 6V supply voltage range. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

74HC173N,652

NXP USA Inc.In Stock: 89774HC173N,652 Datasheet

Current PartRFQ

CD74HC173E

Harris CorporationIn Stock: 30228CD74HC173E Datasheet

DirectRFQ

CD74HC173M

Texas InstrumentsIn Stock: 2910CD74HC173M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HC173N,652 are qualified based on the following electrical and mechanical parameters:

Core Substitution Criteria:

• Base product number: 74HC173
• Function: Master Reset D-Type flip-flop
• Number of elements: 1
• Number of bits per element: 4
• Output type: Tri-State, Non-Inverted
• Trigger type: Positive Edge
• Supply voltage range: 2V ~ 6V
• Output current capability: 7.8 mA (high and low)
• Package compatibility: 16-DIP or 16-SOIC form factors

Substitutes are grouped into two categories: direct pin-compatible through-hole alternatives (16-DIP) and surface-mount alternatives (16-SOIC) that maintain functional equivalence while offering different mounting technologies.

Parameter Comparison

Engineering Selection Recommendations

CD74HC173E (Harris Corporation): This part provides direct pin-compatible substitution in 16-DIP through-hole packaging. It maintains functional equivalence with identical output current specifications and supply voltage range. The extended operating temperature range (-55°C to 125°C) provides broader environmental coverage. However, this part carries RoHS non-compliance status, which may restrict use in applications subject to RoHS regulations.

CD74HC173M (Texas Instruments): This part offers functional equivalence with ROHS3 compliance and Last Time Buy status, indicating continued manufacturer support. The 16-SOIC surface-mount package requires PCB redesign compared to the through-hole 74HC173N,652. This option is suitable for new designs or redesigns where surface-mount technology is preferred and RoHS compliance is mandatory.

Frequently Asked Questions (FAQ)

Q: Can CD74HC173E be used as a direct replacement for 74HC173N,652? A: Yes, CD74HC173E is pin-compatible and functionally equivalent. Both use 16-DIP through-hole packaging with identical pinout. The main consideration is RoHS compliance status; CD74HC173E is RoHS non-compliant while the original part is ROHS3 compliant.

Q: What is the difference between CD74HC173E and CD74HC173M? A: The primary difference is packaging: CD74HC173E uses 16-DIP through-hole, while CD74HC173M uses 16-SOIC surface-mount. CD74HC173M has ROHS3 compliance and Last Time Buy status. Both have identical electrical specifications and supply voltage ranges.

Q: Are there performance differences between the main part and substitutes? A: The 74HC173N,652 operates at 95 MHz clock frequency with 30 ns maximum propagation delay. Both substitutes operate at 60 MHz with 34 ns propagation delay. Both substitutes have higher quiescent current (8 µA vs. 4 µA). These differences are within the 74HC logic family tolerance and do not affect functional compatibility in standard applications.

Q: Which substitute should I select for a new design? A: CD74HC173M is recommended for new designs due to ROHS3 compliance and Last Time Buy status from Texas Instruments. The surface-mount 16-SOIC package aligns with modern PCB manufacturing practices.

Q: Can I use CD74HC173M as a drop-in replacement on existing through-hole PCBs? A: No. CD74HC173M requires surface-mount assembly and cannot be used on PCBs designed for through-hole 16-DIP components without PCB redesign and rework.

Q: What is the significance of "Last Time Buy" status for CD74HC173M? A: Last Time Buy indicates the manufacturer will continue production for a limited period before discontinuation. This status provides a defined window for procurement before the part becomes unavailable.