74F545PC Equivalent & Substitute Parts

Part Overview

The 74F545PC is a non-inverting transceiver logic integrated circuit manufactured by onsemi, designed for 8-bit bidirectional data transfer with 3-state output capability. This component operates within the 4.5V to 5.5V supply voltage range and is housed in a 20-pin DIP package suitable for through-hole mounting applications.

The 74F545PC is classified as an obsolete product. Locating equivalent substitute parts is necessary to support legacy system maintenance, board-level repairs, and continued production of equipment utilizing this component. Active alternatives with identical electrical and mechanical specifications are available from current manufacturers.

Substiute Parts

74F545PC

onsemiIn Stock: 93974F545PC Datasheet

Current PartRFQ

SN74BCT245N

Texas InstrumentsIn Stock: 2106SN74BCT245N Datasheet

Parametric EquivalentRFQ

SN74F245N

Texas InstrumentsIn Stock: 2281SN74F245N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74F545PC are qualified based on strict parametric equivalence across the following critical criteria:

• Logic Type: Transceiver, Non-Inverting
• Number of Elements: 1
• Number of Bits per Element: 8
• Output Type: 3-State
• Current - Output High, Low: 3mA, 24mA; 15mA, 64mA
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature: 0°C ~ 70°C (TA)
• Mounting Type: Through Hole
• Package / Case: 20-DIP (0.300", 7.62mm)
• Supplier Device Package: 20-PDIP

All identified substitute parts maintain identical electrical performance characteristics and physical package dimensions, ensuring direct functional replacement without circuit modification.

Parameter Comparison

Engineering Selection Recommendations

Both SN74BCT245N and SN74F245N from Texas Instruments are active product alternatives to the obsolete 74F545PC. These parts maintain complete parametric equivalence and identical package specifications, enabling direct socket replacement.

The SN74BCT245N operates within the same voltage and temperature specifications with ROHS3 compliance certification. The SN74F245N similarly provides ROHS3 compliance and active product status. Both alternatives are currently in production and available in commercial quantities.

Selection between the two substitute parts may be based on manufacturer preference, supply chain availability, or existing design documentation references. Both parts satisfy the electrical and mechanical requirements for direct substitution of the 74F545PC.

Frequently Asked Questions (FAQ)

Q: Can the SN74BCT245N and SN74F245N be used interchangeably with the 74F545PC?

A: Yes. Both parts are parametric equivalents with identical logic type, bit configuration, output characteristics, supply voltage range, operating temperature range, and 20-PDIP package dimensions. Direct socket replacement is supported without circuit modification.

Q: What is the primary reason to substitute the 74F545PC?

A: The 74F545PC is classified as obsolete. Substitute parts ensure continued availability for system maintenance and production support using active, currently manufactured components.

Q: Are there any compliance differences between the original and substitute parts?

A: The substitute parts from Texas Instruments carry ROHS3 compliance certification, whereas the original 74F545PC does not specify RoHS status. Both alternatives maintain REACH Unaffected status consistent with the original part.

Q: Do the substitute parts require any PCB layout modifications?

A: No. Both SN74BCT245N and SN74F245N use the identical 20-DIP (0.300", 7.62mm) through-hole package, requiring no changes to PCB footprints or mounting procedures.

Q: What is the difference between the 74BCT and 74F series designations?

A: The series designation indicates the logic family. Both 74BCT and 74F families meet the specified electrical parameters for this application. Selection may be based on design documentation or supply availability.