SN74F245DW Equivalent & Substitute Parts

Part Overview

The SN74F245DW is a non-inverting transceiver logic IC manufactured by Texas Instruments, designed for 8-bit data bus applications with 3-state output capability. This component operates within a 4.5V to 5.5V supply voltage range and is housed in a 20-SOIC surface mount package. The part is currently in Last Time Buy status, making identification of functional equivalents and substitutes essential for ongoing design support and procurement planning.

Substiute Parts

SN74F245DW

Texas InstrumentsIn Stock: 2240SN74F245DW Datasheet

Current PartRFQ

SN74F245DWR

Texas InstrumentsIn Stock: 2571SN74F245DWR Datasheet

MFR RecommendedRFQ

SN74BCT245DW

Texas InstrumentsIn Stock: 1322SN74BCT245DW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74F245DW is determined by strict equivalence across the following critical parameters:

• Logic Type: Transceiver, Non-Inverting
• Number of Elements: 1
• Number of Bits per Element: 8
• Output Type: 3-State
• Current ratings: 3mA / 24mA; 15mA / 64mA
• Voltage Supply: 4.5V ~ 5.5V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• MSL: 1 (Unlimited)

Substitutes are categorized into two groups:

MFR Recommended Substitute (Packaging Variant): SN74F245DWR differs only in packaging format (Tape & Reel vs. Tube) while maintaining identical electrical specifications and active product status.

Parametric Equivalent (Series Variant): SN74BCT245DW maintains all electrical and mechanical parameters but represents a different logic series (74BCT vs. 74F) with Last Time Buy status.

Parameter Comparison

Engineering Selection Recommendations

SN74F245DWR is the primary substitute for the SN74F245DW. Both parts are manufactured by Texas Instruments with identical electrical and mechanical specifications. The SN74F245DWR carries Active product status, providing superior long-term availability compared to the Last Time Buy status of the original part. Selection between these two depends on procurement requirements: the SN74F245DWR in Tape & Reel format is suitable for automated assembly processes, while the SN74F245DW in Tube format accommodates manual or lower-volume assembly operations.

SN74BCT245DW is a parametric equivalent offering identical electrical performance and mechanical compatibility. This part belongs to the 74BCT logic series rather than the 74F series. Both the SN74F245DW and SN74BCT245DW share Last Time Buy status. Selection between 74F and 74BCT series variants should be based on existing design validation and supply chain considerations, as both meet the specified electrical and mechanical requirements.

Frequently Asked Questions (FAQ)

Q: Can SN74F245DWR be used as a direct replacement for SN74F245DW?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format: SN74F245DWR uses Tape & Reel packaging while SN74F245DW uses Tube packaging. Selection depends on assembly process requirements.

Q: What is the difference between SN74F245DW and SN74BCT245DW?

A: Both parts are parametric equivalents with identical electrical specifications and 20-SOIC package dimensions. The primary difference is the logic series: 74F versus 74BCT. Both meet all specified electrical and mechanical parameters for transceiver, non-inverting 8-bit applications.

Q: Why is the SN74F245DW marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer is discontinuing this part number. Procurement planning should prioritize the SN74F245DWR (Active status) for new designs or long-term supply requirements.

Q: Are all three parts RoHS compliant?

A: Yes. SN74F245DW, SN74F245DWR, and SN74BCT245DW are all ROHS3 Compliant with MSL rating of 1 (Unlimited).

Q: Can these parts be used interchangeably in existing designs?

A: SN74F245DWR is a direct functional replacement for SN74F245DW. SN74BCT245DW is a parametric equivalent but represents a different logic series. Interchangeability depends on design validation history and supply chain strategy.