74HC7540DB,112 Equivalent & Substitute Parts

Part Overview

The 74HC7540DB,112 is an inverting buffer logic integrated circuit manufactured by Nexperia USA Inc. in the 74HC series. It features 1 element with 8 bits per element, 3-state output configuration, and operates across a 2V to 6V supply voltage range. The device is packaged in a 20-SSOP surface mount package with a width of 5.30mm.

This part carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this logic buffer configuration.

Substiute Parts

74HC7540DB,112

Nexperia USA Inc.In Stock: 89474HC7540DB,112 Datasheet

Current PartRFQ

74HC7540PWJ

Nexperia USA Inc.In Stock: 566874HC7540PWJ Datasheet

MFR RecommendedRFQ

74HC540DB,112

Nexperia USA Inc.In Stock: 123074HC540DB,112 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74HC7540DB,112 are classified based on strict electrical and mechanical parameter alignment:

MFR Recommended Substitute: 74HC7540PWJ This substitute maintains identical electrical specifications including logic type (Buffer, Inverting), element configuration (1 element, 8 bits per element), output type (3-State), output current (7.8mA, 7.8mA), supply voltage range (2V ~ 6V), and operating temperature range (-40°C ~ 125°C). The primary difference is packaging: 20-TSSOP (0.173", 4.40mm Width) versus the original 20-SSOP (0.209", 5.30mm Width). The 74HC7540PWJ is Active product status and includes Schmitt Trigger input type. Supplied in Tape & Reel packaging.

Parametric Equivalent: 74HC540DB,112 This substitute shares the same electrical specifications and package type (20-SSOP, 0.209", 5.30mm Width) as the main part. Both operate at identical voltage ranges (2V ~ 6V), output current (7.8mA, 7.8mA), and temperature range (-40°C ~ 125°C). The base product number differs (74HC540 versus 74HC7540), but functional parameters remain equivalent. Product status is Obsolete. Supplied in Tube packaging.

Key Parameters Determining Substitution: Logic Type, Number of Elements, Number of Bits per Element, Output Type, Output Current specifications, Supply Voltage range, Operating Temperature range, RoHS compliance, and MSL rating.

Parameter Comparison

Engineering Selection Recommendations

74HC7540PWJ (MFR Recommended Substitute): This part is the manufacturer-recommended alternative, carrying Active product status which ensures ongoing availability and support. All electrical parameters match the original specification. The package footprint differs (20-TSSOP versus 20-SSOP), requiring PCB layout modification. This substitute is suitable for new designs or redesigns where PCB layout adjustment is feasible. ROHS3 compliance and MSL 1 rating are maintained.

74HC540DB,112 (Parametric Equivalent): This part maintains identical package dimensions and electrical specifications as the main part, enabling direct PCB footprint compatibility. However, both the main part and this equivalent carry Obsolete status, limiting long-term supply assurance. This option is appropriate for sustaining production of existing designs where PCB modification is not possible. ROHS3 compliance and MSL 1 rating are maintained.

Selection between these substitutes depends on design flexibility regarding PCB layout modification and supply chain requirements for long-term product support.

Frequently Asked Questions (FAQ)

Q: Can 74HC7540PWJ be used as a direct replacement for 74HC7540DB,112 without PCB modification? A: No. While electrical specifications are identical, the package types differ. 74HC7540PWJ uses 20-TSSOP (0.173", 4.40mm Width) versus the original 20-SSOP (0.209", 5.30mm Width). PCB layout modification is required.

Q: What is the difference between 74HC7540DB,112 and 74HC540DB,112? A: The base product numbers differ (74HC7540 versus 74HC540), but all electrical parameters are equivalent. Both use identical 20-SSOP packaging and operate at the same voltage, current, and temperature specifications. The primary distinction is the base product designation.

Q: Are all substitute parts ROHS3 compliant? A: Yes. Both 74HC7540PWJ and 74HC540DB,112 maintain ROHS3 compliance matching the original part specification.

Q: Why is 74HC7540PWJ listed as Active while the main part is Obsolete? A: 74HC7540PWJ represents the current production alternative from the manufacturer. Its Active status indicates ongoing manufacturing and supply availability, making it the preferred choice for new designs or when supply continuity is required.

Q: Do all parts have the same moisture sensitivity level? A: Yes. All parts, including the main part and substitutes, carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: What packaging formats are available for these parts? A: 74HC7540DB,112 is supplied in Tube packaging. 74HC7540PWJ is supplied in Tape & Reel (TR) format. 74HC540DB,112 is supplied in Tube packaging. Selection depends on production volume and assembly process requirements.