74HC573PW,112 Equivalent & Substitute Parts

Part Overview

The 74HC573PW,112 is a D-Type Transparent Latch logic IC manufactured by Nexperia USA Inc., featuring an 8:8 circuit configuration with tri-state output in a 20-TSSOP surface mount package. This part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

The 74HC573 series operates across a 2V to 6V supply voltage range and is widely used in digital logic applications requiring transparent latch functionality. Due to its obsolete status, active alternatives from other manufacturers provide continued availability while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Logic Type	D-Type Transparent Latch
Circuit Configuration	8:8
Output Type	Tri-State
Voltage Supply Range	2V ~ 6V
Independent Circuits	1
Output Current (High/Low)	7.8mA / 7.8mA
Package Type	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Compliance	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 74HC573PW,112 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Substitution Parameters:

Logic Type: D-Type Transparent Latch
Circuit Configuration: 8:8
Output Type: Tri-State
Voltage Supply Range: 2V ~ 6V
Output Current: 7.8mA (High and Low)
Package: 20-TSSOP surface mount
Pin Count and Pinout: Identical to base product number 74HC573

Acceptable Variations:

Propagation Delay Time: Variations permitted within logic family specifications
Operating Temperature Range: Extended ranges acceptable for broader application support
Product Status: Active parts preferred over obsolete; discontinued parts acceptable if electrically identical
Packaging Format: Tape & Reel (TR), Cut Tape (CT), Tube, or Bulk acceptable for same electrical device
Manufacturer: Multiple qualified manufacturers (onsemi, Texas Instruments, Fairchild Semiconductor)

All substitute parts listed maintain the base product number 74HC573 and are functionally interchangeable at the circuit level when electrical parameters align.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Propagation Delay (ns)	Operating Temperature (°C)	Packaging	Inventory (Pcs)
74HC573PW,112	Nexperia USA Inc.	Obsolete	14	-40 ~ 125	Surface Mount	1007
MC74HC573ADTR2G	onsemi	Active	26	-55 ~ 125	Tape & Reel (TR)	2100
MC74HC573ADTG	onsemi	Active	26	-55 ~ 125	Tube	1726
MM74HC573MTC	Fairchild Semiconductor	Active	15	-40 ~ 85	Bulk	7229
MM74HC573MTCX	onsemi	Active	15	-40 ~ 85	Tape & Reel (TR)	4000
SN74HC573APWR	Texas Instruments	Active	23	-40 ~ 85	Cut Tape (CT) & Digi-Reel®	53400
SN74HC573APWT	Texas Instruments	Discontinued at DiGi Electronics	23	-40 ~ 85	Cut Tape (CT) & Digi-Reel®	3144
SN74HC573AQPWRG4Q1	Texas Instruments	Active	23	-40 ~ 125	Surface Mount	1116

Engineering Selection Recommendations

For Standard Industrial Applications: Select SN74HC573APWR (Texas Instruments) as the primary substitute. This part maintains active product status, offers the highest inventory availability (53,400 pcs), and provides ROHS3 compliance with unlimited moisture sensitivity rating. The 23ns propagation delay is acceptable for most 74HC logic applications.

For Extended Temperature Range Requirements: Choose MC74HC573ADTR2G (onsemi) or SN74HC573AQPWRG4Q1 (Texas Instruments). Both support -55°C to 125°C or -40°C to 125°C operating ranges respectively. The MC74HC573ADTR2G offers extended low-temperature performance, while the SN74HC573AQPWRG4Q1 includes AEC-Q100 automotive qualification for grade-specific applications.

For Tape & Reel Packaging: MC74HC573ADTR2G or MM74HC573MTCX are suitable for automated assembly processes. Both are supplied in Tape & Reel format with active product status and ROHS3 compliance.

For High-Volume Procurement: SN74HC573APWR provides the largest available inventory and is manufactured by Texas Instruments, a primary logic IC supplier with established supply chain stability.

All recommended substitutes maintain electrical equivalence through identical voltage supply range (2V ~ 6V), output current specifications (7.8mA), and 20-TSSOP package geometry.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 74HC573PW,112 with any of the listed substitutes?

A: Yes, all listed substitutes are electrically and mechanically compatible. They share the same base product number (74HC573), identical pinout, 20-TSSOP package dimensions, and core electrical specifications (2V ~ 6V supply, 7.8mA output current, tri-state logic). Propagation delay variations (14ns to 26ns) are within acceptable tolerances for standard 74HC logic applications.

Q: What is the difference between the various packaging options?

A: Packaging format affects procurement and assembly processes only. Tape & Reel (TR) and Cut Tape (CT) formats are optimized for automated pick-and-place assembly. Tube packaging suits manual assembly or lower-volume applications. Bulk packaging is used for high-volume direct component handling. All formats contain electrically identical devices.

Q: Why do some substitutes have different operating temperature ranges?

A: Operating temperature range reflects the manufacturer's qualification and testing specifications. The original 74HC573PW,112 operates -40°C to 125°C. Substitutes with -55°C to 125°C ranges (MC74HC573ADTR2G) provide extended low-temperature performance. Those rated -40°C to 85°C (MM74HC573MTC, SN74HC573APWR) are suitable for standard industrial environments. Select based on your application's thermal requirements.

Q: Is the SN74HC573AQPWRG4Q1 suitable for automotive applications?

A: Yes. The SN74HC573AQPWRG4Q1 carries AEC-Q100 automotive qualification and is graded for automotive use. It maintains the same electrical specifications as other 74HC573 variants while meeting automotive reliability and testing standards.

Q: What does "Discontinued at DiGi Electronics" mean for the SN74HC573APWT?

A: This indicates the part is no longer actively distributed through DiGi Electronics but remains electrically valid. Existing inventory (3,144 pcs) may be available through alternative distributors. For new designs, SN74HC573APWR (active status) is the preferred Texas Instruments alternative.

Q: Are all substitutes ROHS3 compliant?

A: All listed substitutes except MM74HC573MTC explicitly state ROHS3 compliance. MM74HC573MTC does not list RoHS status in the provided specifications. Verify RoHS compliance requirements with your procurement or quality department before final selection.

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