CD74FCT245M Equivalent & Substitute Parts

Part Overview

The CD74FCT245M is a non-inverting octal bus transceiver manufactured by Texas Instruments, designed for 3-state output applications in 20-SOIC surface mount packaging. This component operates within a 4.75V to 5.25V supply voltage range and supports 8-bit bidirectional data transfer with independent control of each direction. The part is currently in Last Time Buy status, making identification of active equivalent and substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

CD74FCT245M

Texas InstrumentsIn Stock: 742CD74FCT245M Datasheet

Current PartRFQ

CD74FCT245M96

Texas InstrumentsIn Stock: 3797CD74FCT245M96 Datasheet

MFR RecommendedRFQ

CD74FCT623M

Harris CorporationIn Stock: 32314CD74FCT623M Datasheet

Parametric EquivalentRFQ

74FCT2245ATSOG8

IDT, Integrated Device Technology IncIn Stock: 1705374FCT2245ATSOG8 Datasheet

MFR RecommendedRFQ

74FCT245ATSOG

Renesas Electronics CorporationIn Stock: 73374FCT245ATSOG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74FCT245M is determined by strict equivalence across the following critical parameters: logic type (non-inverting transceiver), number of elements (1), bits per element (8), output type (3-state), supply voltage range (4.75V ~ 5.25V), package type (20-SOIC), and mounting method (surface mount). Parts are grouped into two categories based on product status and packaging configuration.

MFR Recommended Substitutes maintain identical electrical specifications and active product status, differing only in packaging format (Tape & Reel versus Tube) or manufacturer source. These parts are suitable for direct replacement in new designs and ongoing production.

Parametric Equivalents share core electrical functionality but may have extended operating temperature ranges, different product status, or non-compliant certifications. These parts require design review before implementation.

Parameter Comparison

Engineering Selection Recommendations

CD74FCT245M96 is the primary recommended substitute. Manufactured by Texas Instruments with identical electrical specifications and ROHS3 compliance, this part differs only in packaging format (Tape & Reel versus Tube). Active product status ensures long-term availability and supply chain continuity. Selection is appropriate for all applications where the original CD74FCT245M was specified.

74FCT245ATSOG manufactured by Renesas Electronics is a secondary equivalent option. This part maintains identical electrical parameters, ROHS3 compliance, and active product status. Extended operating temperature range (-40°C to 85°C) provides additional thermal margin compared to the original specification (0°C to 70°C). Tube packaging matches the original format.

74FCT2245ATSOG8 manufactured by IDT is functionally equivalent with active product status and ROHS3 compliance. Output low current specification differs (12mA versus 64mA), and extended operating temperature range is provided. Extended temperature capability may benefit applications requiring wider thermal operating margins.

CD74FCT623M manufactured by Harris Corporation shares identical electrical specifications but carries obsolete product status and RoHS non-compliance. This part is not recommended for new designs or ongoing procurement due to end-of-life status and regulatory non-compliance.

Frequently Asked Questions (FAQ)

Q: Can CD74FCT245M96 be used as a direct replacement for CD74FCT245M?

A: Yes. Both parts are manufactured by Texas Instruments with identical electrical specifications, supply voltage range, output current ratings, operating temperature, and 20-SOIC packaging. The only difference is packaging format (Tape & Reel versus Tube). CD74FCT245M96 is active and ROHS3 compliant, making it suitable for direct substitution.

Q: What is the significance of the different output low current ratings between 74FCT2245ATSOG8 (12mA) and the original CD74FCT245M (64mA)?

A: Output current capability affects the maximum load that can be driven by the transceiver. The 74FCT2245ATSOG8 has reduced output low current (12mA) compared to the original specification (64mA). Applications requiring the full 64mA output capability should not use this substitute without circuit redesign verification.

Q: Why is CD74FCT623M listed as a parametric equivalent if it is obsolete?

A: CD74FCT623M shares identical electrical specifications and 20-SOIC packaging with the original part. However, obsolete product status and RoHS non-compliance make it unsuitable for new designs or long-term procurement. It is included for reference only in legacy system documentation.

Q: Does the extended operating temperature range of 74FCT245ATSOG (-40°C to 85°C) versus the original (0°C to 70°C) affect compatibility?

A: Extended temperature range is a superset of the original specification and does not reduce compatibility. Applications operating within the original 0°C to 70°C range will function identically. Extended range provides additional thermal margin for applications requiring wider operating conditions.

Q: Are all substitute parts available in the same 20-SOIC package?

A: Yes. All listed substitute parts use 20-SOIC (0.295", 7.50mm Width) surface mount packaging, ensuring mechanical and electrical compatibility with existing PCB layouts and sockets.

Q: Which substitute part has the best long-term availability?

A: CD74FCT245M96 (Texas Instruments, active status) and 74FCT245ATSOG (Renesas Electronics, active status) both have active product status ensuring ongoing availability. CD74FCT245M96 is the manufacturer-recommended option with identical specifications and ROHS3 compliance.