74F573PC Equivalent & Substitute Parts

Part Overview

The 74F573PC is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring an 8:8 circuit configuration with tri-state output capability. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The 74F573 series provides a single-channel transparent latch function suitable for digital logic applications requiring data latching and bus interface capabilities.

Substiute Parts

74F573PC

onsemiIn Stock: 195474F573PC Datasheet

Current PartRFQ

SN74F573N

Texas InstrumentsIn Stock: 23257SN74F573N Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74F573PC is based on strict equivalence across the following critical parameters:

• Logic Function: D-Type Transparent Latch with identical 8:8 circuit configuration
• Electrical Specifications: Matching supply voltage range (4.5V ~ 5.5V), output current ratings (3mA high, 24mA low), and operating temperature range (0°C ~ 70°C)
• Package Compatibility: Identical 20-DIP package footprint (0.300", 7.62mm) for direct board-level replacement
• Output Architecture: Tri-state output capability for bus interface applications
• Series Designation: 74F logic family classification

The SN74F573N from Texas Instruments meets all substitution criteria within these defined parameters.

Parameter Comparison

Engineering Selection Recommendations

The SN74F573N from Texas Instruments is the direct functional equivalent for the obsolete 74F573PC. Selection of the Texas Instruments part provides the following advantages:

• Active Product Status: Ensures long-term availability and supply chain continuity
• Regulatory Compliance: ROHS3 compliant, meeting current environmental standards
• Identical Electrical Interface: Matching voltage supply, output current, and operating temperature specifications enable direct substitution
• Package Compatibility: Identical 20-DIP footprint allows board-level replacement without layout modification
• Regulatory Alignment: Both parts maintain REACH Unaffected status

The propagation delay difference (5.3ns versus 8.6ns) falls within acceptable timing margins for standard 74F logic applications and does not preclude substitution in typical digital logic circuits.

Frequently Asked Questions (FAQ)

Q: Can the SN74F573N directly replace the 74F573PC on existing PCBs?

A: Yes. Both parts share identical 20-DIP package footprints and pinouts. Direct board-level replacement is possible without layout modification.

Q: What is the significance of the propagation delay difference between these parts?

A: The 74F573PC specifies 5.3ns propagation delay while the SN74F573N specifies 8.6ns. Both values are within the 74F logic family specification range. For applications with critical timing requirements, verify that the 8.6ns delay meets system timing budgets.

Q: Are there compliance differences between these parts?

A: The SN74F573N carries ROHS3 compliance certification, while the 74F573PC does not specify RoHS status. Both maintain REACH Unaffected status. The Texas Instruments part aligns with current environmental regulations.

Q: Why is the 74F573PC listed as obsolete?

A: Obsolete status indicates the part is no longer manufactured by onsemi. The SN74F573N from Texas Instruments provides functional continuity for applications requiring 74F573 logic functionality.

Q: Are the electrical specifications identical between these parts?

A: Yes. Supply voltage (4.5V ~ 5.5V), output current ratings (3mA high, 24mA low), operating temperature range (0°C ~ 70°C), and circuit configuration (8:8 D-Type Transparent Latch with tri-state output) are identical.