XC74WL04AASR Equivalent & Substitute Parts

Part Overview

The XC74WL04AASR is a 3-channel inverter logic IC manufactured by Torex Semiconductor Ltd in 8-MSOPB surface mount packaging. This device performs basic logic inversion operations across three independent channels with a single input per channel. The product is classified as obsolete, which necessitates identification of functionally equivalent active alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across supply voltage, propagation delay, output drive capability, and input logic thresholds while accommodating available packaging options.

Substiute Parts

XC74WL04AASR

Torex Semiconductor LtdIn Stock: 2675XC74WL04AASR Datasheet

Current PartRFQ

74AHC3G04DP,125

Nexperia USA Inc.In Stock: 106674AHC3G04DP,125 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the XC74WL04AASR is determined by strict equivalence across the following critical parameters:

Functional Requirements:

• Logic type must be inverter
• Circuit count must equal 3 channels
• Input count must equal 3

Electrical Compatibility:

• Supply voltage range must encompass or match 2V ~ 5.5V
• Output drive current must meet or exceed 8mA for both high and low states
• Input logic thresholds must be compatible with 0.5V ~ 1.65V (low) and 1.5V ~ 3.85V (high)
• Propagation delay must not exceed 7.5ns at 5V with 50pF load

Environmental & Compliance:

• Operating temperature range must support -40°C ~ 85°C minimum
• RoHS3 compliance required
• MSL rating of 1 or equivalent

Packaging:

• Surface mount technology required
• 8-pin package format (TSSOP or MSOP variants acceptable)

The 74AHC3G04DP,125 manufactured by Nexperia USA Inc. qualifies as a direct substitute based on matching all functional and electrical parameters within the specified tolerances.

Parameter Comparison

Engineering Selection Recommendations

The 74AHC3G04DP,125 is qualified as a direct substitute for the obsolete XC74WL04AASR based on the following engineering criteria:

Functional Equivalence: Both devices implement identical 3-channel inverter logic with matching input and output specifications. The 74AHC series from Nexperia provides active product status with ongoing manufacturing support, addressing the obsolescence constraint of the original Torex device.

Electrical Compatibility: All critical electrical parameters align within specification. The substitute exhibits slightly elevated quiescent current (10 µA versus 1 µA), which remains negligible in most applications. The extended operating temperature range (-40°C ~ 125°C) of the substitute provides additional thermal margin beyond the original requirement.

Compliance & Certification: Both devices maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and production continuity. MSL rating of 1 (unlimited) on both parts ensures equivalent moisture handling and storage protocols.

Packaging Consideration: The substitute is supplied in 8-TSSOP packaging versus the original 8-MSOPB format. Both are 8-pin surface mount packages with similar footprint dimensions (0.118" versus 0.110" width). PCB layout verification is required to confirm pin-to-pin compatibility and trace routing accommodation.

Frequently Asked Questions (FAQ)

Q: Can the 74AHC3G04DP,125 be used as a direct drop-in replacement for the XC74WL04AASR?

A: Electrical and functional compatibility is confirmed. However, the package variant (8-TSSOP versus 8-MSOPB) requires PCB footprint verification. Pin assignments are identical, but physical dimensions differ slightly. Confirm PCB layout accommodation before implementation.

Q: What is the significance of the higher quiescent current in the substitute part?

A: The 74AHC3G04DP,125 specifies 10 µA maximum quiescent current compared to 1 µA for the XC74WL04AASR. This 9 µA difference is negligible in most digital logic applications and does not impact system-level power consumption in typical operating scenarios.

Q: Are there any temperature operating range differences?

A: The substitute part supports -40°C ~ 125°C versus the original -40°C ~ 85°C. This extended upper temperature limit provides additional thermal margin and is fully backward compatible with the original specification.

Q: What packaging options are available for the substitute?

A: The 74AHC3G04DP,125 is supplied in 8-TSSOP surface mount packaging with tape and reel (TR) configuration. The original XC74WL04AASR used 8-MSOPB packaging. Both are 8-pin packages; physical dimensions require verification for PCB compatibility.

Q: Are both parts RoHS compliant?

A: Yes. Both the XC74WL04AASR and 74AHC3G04DP,125 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the moisture sensitivity level for both parts?

A: Both devices carry MSL rating 1 (unlimited), indicating no moisture sensitivity constraints. Standard handling and storage protocols apply without special desiccant or baking requirements.

Q: Can the 74AHC3G04DP,125 be used in new designs?

A: Yes. The substitute is classified as active product status with ongoing manufacturing support from Nexperia USA Inc., making it suitable for new design implementations and long-term production continuity.