54FCT245TLB Equivalent & Substitute Parts

Part Overview

The 54FCT245TLB is an octal bus transceiver with non-inverting logic manufactured by Renesas Electronics Corporation. This device functions as a 1-element, 8-bit per element transceiver with 3-state output capability, designed for 5.5V logic applications. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

54FCT245TLB

Renesas Electronics CorporationIn Stock: 79354FCT245TLB Datasheet

Current PartRFQ

CY54FCT245CTLMB

Texas InstrumentsIn Stock: 1005CY54FCT245CTLMB Datasheet

DirectRFQ

CY54FCT245TLMB

Texas InstrumentsIn Stock: 1133CY54FCT245TLMB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 54FCT245TLB are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

• Logic Type: Transceiver, Non-Inverting
• Number of Elements: 1
• Number of Bits per Element: 8
• Output Type: 3-State
• Current - Output High, Low: 12mA, 48mA
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature: -55°C ~ 125°C (TA)
• Package / Case: 20-LCC or 20-LCCC (8.89x8.89)

Both identified substitute parts meet these electrical specifications. The primary distinction between the main part and substitutes is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

Both CY54FCT245CTLMB and CY54FCT245TLMB from Texas Instruments provide functional equivalence to the 54FCT245TLB. Selection between these substitutes should be based on the following factors:

Product Status: Both substitute parts carry Active product status, ensuring continued availability and manufacturer support, in contrast to the obsolete 54FCT245TLB.

Compliance: Both substitute parts are ROHS3 compliant, meeting modern environmental and regulatory requirements. The original 54FCT245TLB is RoHS non-compliant.

Package Compatibility: The substitute parts use 20-LCCC packaging versus the original 20-LCC packaging. Both maintain identical physical dimensions (8.89x8.89mm) and pin configurations, supporting direct board-level substitution.

Electrical Equivalence: All three parts share identical electrical specifications across output current, supply voltage, and operating temperature ranges, ensuring functional interchangeability in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can CY54FCT245CTLMB and CY54FCT245TLMB be used interchangeably with 54FCT245TLB?

A: Yes. Both substitute parts meet all electrical specifications of the original part, including output current (12mA, 48mA), supply voltage (4.5V ~ 5.5V), and operating temperature range (-55°C ~ 125°C). Package dimensions are identical at 8.89x8.89mm.

Q: What is the difference between 20-LCC and 20-LCCC packaging?

A: Both are ceramic leadless chip carriers with identical external dimensions and pin configurations. The primary distinction is manufacturing process and material composition. Both support direct board-level substitution for the 54FCT245TLB application.

Q: Why are the substitute parts listed as Active while the original is Obsolete?

A: The 54FCT245TLB has reached end-of-life status with Renesas Electronics Corporation. The Texas Instruments equivalents remain in active production, ensuring long-term availability and manufacturer support for new designs and system maintenance.

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

A: Yes. The original 54FCT245TLB is RoHS non-compliant, while both substitute parts (CY54FCT245CTLMB and CY54FCT245TLMB) are ROHS3 compliant. Both share identical ECCN classification (EAR99).

Q: What determines whether a part qualifies as a substitute for 54FCT245TLB?

A: Substitution eligibility is based on matching the following parameters: logic type (non-inverting transceiver), element count (1), bit count per element (8), output type (3-state), output current specifications (12mA, 48mA), supply voltage range (4.5V ~ 5.5V), operating temperature range (-55°C ~ 125°C), and package dimensions (8.89x8.89mm).