SN74AHCT573PWRE4 Equivalent & Substitute Parts

Part Overview

The SN74AHCT573PWRE4 is a D-Type Transparent Latch logic IC manufactured by Texas Instruments, featuring an 8:8 circuit configuration with tri-state output capability. This component is classified as discontinued at DiGi Electronics, necessitating identification of active equivalent alternatives for ongoing design requirements and production needs. The part operates within a 4.5V to 5.5V supply voltage range and is housed in a 20-TSSOP surface mount package.

Substiute Parts

SN74AHCT573PWRE4

Texas InstrumentsIn Stock: 1103SN74AHCT573PWRE4 Datasheet

Current PartRFQ

SN74AHCT373PWR

Texas InstrumentsIn Stock: 3641SN74AHCT373PWR Datasheet

Parametric EquivalentRFQ

SN74AHCT573PWR

Texas InstrumentsIn Stock: 5284SN74AHCT573PWR Datasheet

Parametric EquivalentRFQ

74AHCT573PW,118

Nexperia USA Inc.In Stock: 160074AHCT573PW,118 Datasheet

MFR RecommendedRFQ

MC74VHCT573ADTG

onsemiIn Stock: 1206MC74VHCT573ADTG Datasheet

MFR RecommendedRFQ

MC74VHCT573ADTRG

onsemiIn Stock: 2688MC74VHCT573ADTRG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SN74AHCT573PWRE4 is determined by strict adherence to the following critical parameters:

Mandatory Matching Parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Voltage - Supply: 4.5V ~ 5.5V
• Independent Circuits: 1
• Current - Output High, Low: 8mA, 8mA
• Package / Case: 20-TSSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation Parameters:

• Delay Time - Propagation: Acceptable within engineering tolerance
• Operating Temperature: Extended ranges acceptable
• Packaging Format: Cut Tape, Tape & Reel, or Tube acceptable
• Product Status: Active status preferred for ongoing availability

All identified substitute parts maintain electrical and mechanical compatibility through adherence to these parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Texas Instruments Series):

SN74AHCT373PWR and SN74AHCT573PWR are direct parametric equivalents manufactured by Texas Instruments with active product status. Both maintain identical electrical specifications including 1ns propagation delay and operate within the same temperature range. SN74AHCT573PWR offers superior inventory availability at 5200 pieces and is supplied in Cut Tape and Digi-Reel format. SN74AHCT373PWR provides 3537 pieces in Tape & Reel packaging. Both parts carry ROHS3 compliance and MSL Level 1 rating.

Secondary Substitute (Nexperia):

74AHCT573PW,118 manufactured by Nexperia USA Inc. maintains full electrical and mechanical compatibility with extended operating temperature range (-40°C ~ 125°C). Propagation delay extends to 4.6ns, which remains within acceptable engineering tolerance for most applications. This part is supplied in Tape & Reel format with 1511 pieces available inventory.

Alternative Series (onsemi 74VHCT):

MC74VHCT573ADTG and MC74VHCT573ADTRG manufactured by onsemi represent the 74VHCT series variant. Both parts maintain full parametric compatibility with propagation delay of 5.1ns. MC74VHCT573ADTG is supplied in Tube packaging (1179 pieces), while MC74VHCT573ADTRG is supplied in Tape & Reel format (2604 pieces). Both carry ROHS3 compliance and MSL Level 1 rating.

Frequently Asked Questions (FAQ)

Q: Can SN74AHCT373PWR be used as a direct replacement for SN74AHCT573PWRE4?

A: Yes. SN74AHCT373PWR meets all mandatory electrical and mechanical parameters. Both parts feature identical 8:8 circuit configuration, tri-state output, 4.5V-5.5V supply voltage, 8mA output current, and 20-TSSOP surface mount packaging. The primary difference is packaging format (Tape & Reel versus the original's format) and active product status.

Q: What is the significance of propagation delay variation among substitutes?

A: Propagation delay determines signal transition speed. The main part specifies 1ns, while substitutes range from 1ns to 5.1ns. All values remain within acceptable engineering tolerance for D-Type Transparent Latch applications. Selection should be based on specific timing requirements of the circuit design.

Q: Are onsemi 74VHCT573 parts compatible with the original Texas Instruments part?

A: Yes. MC74VHCT573ADTG and MC74VHCT573ADTRG maintain full electrical and mechanical compatibility. The 74VHCT series designation indicates a different product line from 74AHCT, but both meet the mandatory parameters for substitution. Propagation delay extends to 5.1ns, which is acceptable for most applications.

Q: What packaging format differences exist among the substitute parts?

A: Substitute parts are available in three packaging formats: Cut Tape & Digi-Reel (SN74AHCT573PWR), Tape & Reel (SN74AHCT373PWR, 74AHCT573PW,118, MC74VHCT573ADTRG), and Tube (MC74VHCT573ADTG). All formats are compatible with standard pick-and-place assembly equipment. Selection depends on production volume and assembly line requirements.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes. All identified substitute parts carry ROHS3 Compliant status and MSL Level 1 (Unlimited) rating, matching the original part's environmental and regulatory compliance profile.

Q: Which substitute offers the best inventory availability?

A: SN74AHCT573PWR provides the highest inventory availability at 5200 pieces, followed by MC74VHCT573ADTRG at 2604 pieces and SN74AHCT373PWR at 3537 pieces.