74ABT245CSCX Equivalent & Substitute Parts

Part Overview

The 74ABT245CSCX is a non-inverting transceiver logic IC manufactured by onsemi, featuring 1 element with 8 bits per element and 3-state output capability in a 20-SOIC package. This component operates across a 4.5V to 5.5V supply voltage range with output drive capabilities of 32mA (high) and 64mA (low), suitable for bidirectional data bus applications. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

74ABT245CSCX

onsemiIn Stock: 1233574ABT245CSCX Datasheet

Current PartRFQ

SN74ABT245BDWR

Texas InstrumentsIn Stock: 3509SN74ABT245BDWR Datasheet

DirectRFQ

SN74ABT2245DW

Texas InstrumentsIn Stock: 2814SN74ABT2245DW Datasheet

SimilarRFQ

SN74ABT2245DWR

Texas InstrumentsIn Stock: 957SN74ABT2245DWR Datasheet

SimilarRFQ

SN74ABT245BDW

Texas InstrumentsIn Stock: 2206SN74ABT245BDW Datasheet

SimilarRFQ

SN74ABT245BNSR

Texas InstrumentsIn Stock: 2408SN74ABT245BNSR Datasheet

SimilarRFQ

SN74ABTH245DW

Texas InstrumentsIn Stock: 1946SN74ABTH245DW Datasheet

SimilarRFQ

74ABT245D,623

Nexperia USA Inc.In Stock: 545774ABT245D,623 Datasheet

Parametric EquivalentRFQ

SN74ABT623DWR

Texas InstrumentsIn Stock: 4071SN74ABT623DWR Datasheet

Parametric EquivalentRFQ

SN74ABTH245DWR

Texas InstrumentsIn Stock: 2321SN74ABTH245DWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74ABT245CSCX 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 - Output High, Low: 32mA, 64mA
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C (TA)
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC or 20-SO (mechanical compatibility)

Substitute parts are categorized into three groups:

Direct Substitutes (Pin-Compatible, Same Package): Parts with identical electrical specifications and 20-SOIC packaging, differing only in manufacturer or packaging format (tape & reel, cut tape, tube).

Similar Substitutes (Functional Equivalents, Alternate Package): Parts with identical electrical specifications but in 20-SO package (0.209" width versus 0.295" width), maintaining functional compatibility with potential PCB layout considerations.

Parametric Equivalents (Series Variants): Parts from different base series (74ABT623, 74ABTH245) that maintain all critical electrical parameters and package compatibility.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain full electrical and functional equivalence to the 74ABT245CSCX across critical operating parameters. Selection should prioritize active product status and RoHS3 compliance for new designs and long-term availability.

For Direct Pin-Compatible Replacement (20-SOIC Package): SN74ABT245BDWR, SN74ABT2245DW, SN74ABT2245DWR, SN74ABT245BDW, SN74ABTH245DW, SN74ABT623DWR, and SN74ABTH245DWR are all suitable direct substitutes. Texas Instruments and Nexperia USA Inc. sources provide active product status with ROHS3 compliance certification.

For Alternate Package Consideration (20-SO Package): SN74ABT245BNSR and 74ABT245D,623 provide functional equivalence in the narrower 20-SO package (0.209" width). PCB layout verification is required to confirm mechanical compatibility with existing footprints designed for 20-SOIC (0.295" width).

Packaging Format Selection: Tape & Reel (TR) formats (SN74ABT2245DWR, SN74ABT245BNSR, SN74ABT623DWR, SN74ABTH245DWR) are recommended for high-volume production. Cut Tape (CT) and Tube formats support lower-volume or prototype applications.

Frequently Asked Questions (FAQ)

Q: Can SN74ABT245BDWR be used as a direct replacement for 74ABT245CSCX? A: Yes. SN74ABT245BDWR is a direct substitute with identical electrical specifications (1 element, 8 bits, 3-state output, 32mA/64mA drive, 4.5V–5.5V supply, -40°C to 85°C operating range) and the same 20-SOIC package. It is manufactured by Texas Instruments and carries active product status with ROHS3 compliance.

Q: What is the difference between 20-SOIC and 20-SO packages? A: Both packages contain 20 pins with identical electrical connectivity. The primary difference is physical width: 20-SOIC measures 0.295" (7.50mm) while 20-SO measures 0.209" (5.30mm). PCB footprints designed for one package may not accommodate the other without layout modification.

Q: Are all substitute parts RoHS3 compliant? A: All substitute parts listed carry ROHS3 Compliant certification. The original 74ABT245CSCX does not specify RoHS status due to its obsolete classification.

Q: What is the difference between 74ABT and 74ABTH series? A: Both series maintain identical electrical specifications for this transceiver function. The 74ABTH designation indicates a variant within the Texas Instruments product line. Functional and electrical compatibility is maintained across both series for this application.

Q: Can I use SN74ABT623DWR as a substitute? A: Yes. SN74ABT623DWR is a parametric equivalent with identical electrical specifications and 20-SOIC package. The base part number differs (623 versus 245), but all critical parameters—logic type, element count, bit width, output type, drive current, supply voltage, and temperature range—are equivalent.

Q: Which substitute offers the best availability? A: Inventory levels vary by distributor and time. SN74ABT245BDWR (3400 pcs), 74ABT245D,623 (5391 pcs), and SN74ABT623DWR (3977 pcs) show higher stock levels in the provided data. Verify current availability with your component supplier.

Q: Are there any thermal or performance differences between substitutes? A: All substitutes maintain identical operating temperature range (-40°C to 85°C) and output drive specifications (32mA high, 64mA low). No thermal or performance differentiation exists across the substitute list for this application.