74HC573N,652 D-Type Transparent Latch Equivalent & Substitute Parts

Part Overview

The 74HC573N,652 is a D-Type Transparent Latch IC manufactured by NXP USA Inc., featuring an 8:8 channel configuration with tri-state output in a 20-DIP package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates across a 2V to 6V supply voltage range with a 14ns propagation delay and is suitable for applications requiring transparent latch functionality in digital logic circuits.

Substiute Parts

74HC573N,652

NXP USA Inc.In Stock: 120974HC573N,652 Datasheet

Current PartRFQ

CD74HC573E

Texas InstrumentsIn Stock: 1199CD74HC573E Datasheet

DirectRFQ

SN74HC573AN

Texas InstrumentsIn Stock: 3470SN74HC573AN Datasheet

DirectRFQ

74HC573D,653

Nexperia USA Inc.In Stock: 1242074HC573D,653 Datasheet

MFR RecommendedRFQ

TC74HC573APF

Toshiba Semiconductor and StorageIn Stock: 2548TC74HC573APF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74HC573N,652 is determined by the following critical parameters:

Core Functional Parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Voltage Supply Range: 2V ~ 6V (minimum overlap required)
• Independent Circuits: 1

Electrical Performance Parameters:

• Propagation Delay: Must not exceed application timing requirements
• Output Current Capability: 7.8mA minimum for both high and low states

Physical & Environmental Parameters:

• Mounting Type: Through Hole (for direct PCB compatibility)
• Package / Case: 20-DIP form factor
• Operating Temperature Range: Must encompass or match the -40°C ~ 125°C specification

All substitute parts listed maintain identical logic functionality, circuit configuration, and output characteristics. Variations in propagation delay and operating temperature ranges are noted to support design-specific selection criteria.

Parameter Comparison

Engineering Selection Recommendations

Direct Through-Hole DIP Substitutes (Pin-Compatible):

SN74HC573AN and TC74HC573APF are the primary through-hole alternatives to the 74HC573N,652. Both maintain the 20-DIP package format and support direct PCB socket replacement. SN74HC573AN offers the widest active product availability with 3414 units in stock and operates within the -40°C to 85°C temperature range. TC74HC573APF provides identical temperature coverage to the original part (-40°C to 125°C) with 2482 units available, making it suitable for extended temperature applications.

Alternative Through-Hole Option:

CD74HC573E from Texas Instruments is available in 20-PDIP packaging with 1134 units in stock. This part extends the operating temperature range to -55°C to 125°C, providing enhanced low-temperature performance. The 30ns propagation delay is slower than the original specification but remains within typical application tolerances for transparent latch circuits.

Surface Mount Alternative:

74HC573D,653 from Nexperia USA Inc. is the manufacturer-recommended substitute, featuring identical propagation delay (14ns) and temperature range (-40°C to 125°C) to the original part. This component is available in 20-SOIC surface mount packaging with 12323 units in stock. Selection of this part requires PCB redesign for surface mount compatibility but offers superior component availability and active product status.

Compliance & Regulatory Status:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory profile of the original 74HC573N,652. All parts carry EAR99 ECCN classification and identical HTSUS commodity codes.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the 74HC573N,652 with any of these substitute parts?

A: Direct replacement depends on package compatibility. SN74HC573AN and TC74HC573APF maintain the 20-DIP through-hole package and support direct socket substitution. CD74HC573E uses 20-PDIP packaging, which is mechanically compatible with standard 20-DIP sockets. The 74HC573D,653 requires PCB redesign due to its 20-SOIC surface mount package format.

Q: What is the difference between the propagation delay specifications?

A: The original 74HC573N,652 specifies 14ns propagation delay. Substitute parts range from 14ns (74HC573D,653) to 30ns (CD74HC573E). Propagation delay affects signal transition timing in latch circuits. Applications with strict timing requirements should select parts matching or exceeding the original specification. Most general-purpose transparent latch applications tolerate delays up to 30ns without functional impact.

Q: Which substitute part has the best temperature range coverage?

A: CD74HC573E from Texas Instruments offers the extended range of -55°C to 125°C, providing superior low-temperature performance. The original part and 74HC573D,653 both support -40°C to 125°C. SN74HC573AN and TC74HC573APF are limited to -40°C to 85°C, suitable for standard industrial temperature applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the regulatory requirement of the original 74HC573N,652. Moisture sensitivity levels vary; the original part and Toshiba TC74HC573APF specify MSL 1 (Unlimited), while Texas Instruments parts list MSL as Not Applicable.

Q: What is the inventory status of each substitute?

A: SN74HC573AN has the highest availability with 3414 units in stock. 74HC573D,653 offers 12323 units, providing the largest supply. CD74HC573E and TC74HC573APF have 1134 and 2482 units respectively. The original 74HC573N,652 maintains 1128 units despite obsolete status.

Q: Can I use the surface mount 74HC573D,653 in a through-hole design?

A: No. The 74HC573D,653 uses 20-SOIC surface mount packaging and cannot be directly installed in through-hole sockets. PCB redesign with surface mount pads and reflow soldering capability is required. For through-hole designs, select SN74HC573AN, TC74HC573APF, or CD74HC573E.