FST16245MTD Bus Switch 8 x 1:1 Equivalent & Substitute Parts

Part Overview

The FST16245MTD is an 8 x 1:1 bus switch IC manufactured by onsemi in a 48-TSSOP package. This logic component operates with a single supply voltage between 4V and 5.5V and supports a temperature range of -40°C to 85°C. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements.

Substiute Parts

FST16245MTD

onsemiIn Stock: 839FST16245MTD Datasheet

Current PartRFQ

SN74CBT16245DGGR

Texas InstrumentsIn Stock: 5007SN74CBT16245DGGR Datasheet

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SN74CBT16245CDGGR

Texas InstrumentsIn Stock: 3419SN74CBT16245CDGGR Datasheet

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SN74CBT16245CDGVR

Texas InstrumentsIn Stock: 924SN74CBT16245CDGVR Datasheet

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SN74CBT16245CDL

Texas InstrumentsIn Stock: 1491SN74CBT16245CDL Datasheet

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SN74CBT16245CDLR

Texas InstrumentsIn Stock: 3058SN74CBT16245CDLR Datasheet

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SN74CBT16245DL

Texas InstrumentsIn Stock: 1187SN74CBT16245DL Datasheet

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SN74CBT16245DLR

Texas InstrumentsIn Stock: 882SN74CBT16245DLR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FST16245MTD is determined by the following critical parameters:

• Circuit configuration: 8 x 1:1 topology with 2 independent circuits
• Voltage supply range: 4V ~ 5.5V single supply operation
• Operating temperature range: -40°C ~ 85°C
• Mounting type: Surface mount technology
• Package compatibility: 48-pin configurations (TSSOP, TVSOP, SSOP variants)

Texas Instruments SN74CBT16245 series parts meet these electrical and mechanical requirements. Substitutes are grouped by package type: TFSOP (48-TSSOP), TVSOP (48-TVSOP), and SSOP (48-SSOP) variants. All substitute parts maintain identical circuit functionality, voltage specifications, and temperature ratings.

Parameter Comparison

Engineering Selection Recommendations

For replacement of the obsolete FST16245MTD, select from the Texas Instruments SN74CBT16245 series based on product lifecycle status and packaging requirements:

Primary Selection (Active Status): SN74CBT16245CDGGR (48-TFSOP package) provides the closest form-factor match to the original FST16245MTD and maintains active product status with ROHS3 compliance.

Alternative Selections (Active Status): SN74CBT16245CDGVR (48-TVSOP package) and SN74CBT16245CDL or SN74CBT16245CDLR (48-SSOP packages) are active alternatives when package footprint changes are acceptable for the application.

Secondary Selections (Last Time Buy Status): SN74CBT16245DGGR, SN74CBT16245DL, and SN74CBT16245DLR are available but classified as Last Time Buy, indicating limited future availability.

All substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance profile of the original component.

Frequently Asked Questions (FAQ)

Q: Can SN74CBT16245CDGGR directly replace FST16245MTD without PCB modifications?

A: Yes. Both parts use the 48-TFSOP package with identical pinout, voltage specifications (4V ~ 5.5V), and operating temperature range (-40°C ~ 85°C). No PCB layout changes are required.

Q: What is the difference between 48-TFSOP, 48-TVSOP, and 48-SSOP packages?

A: These are different package footprints with varying body widths. 48-TFSOP is 0.240" (6.10mm) wide, 48-TVSOP is 0.173" (4.40mm) wide, and 48-SSOP is 0.295" (7.50mm) wide. Package selection depends on PCB space constraints and existing design footprints.

Q: Are all SN74CBT16245 variants electrically equivalent?

A: Yes. All variants maintain identical circuit configuration (8 x 1:1), voltage supply range (4V ~ 5.5V), and operating temperature range (-40°C ~ 85°C). Differences are limited to package type and product lifecycle status.

Q: What does "Last Time Buy" status mean?

A: Last Time Buy indicates the manufacturer has announced end-of-life for that specific part number. Inventory may still be available, but future production is not guaranteed. Active status parts are recommended for new designs.

Q: Is ROHS3 compliance required for my application?

A: ROHS3 compliance is mandatory for products sold in the European Union and many other markets. All Texas Instruments SN74CBT16245 substitutes are ROHS3 compliant. The original FST16245MTD compliance status is not specified in available documentation.

Q: Can I use different packaging variants interchangeably?

A: Electrical functionality is identical across all package variants. However, PCB footprints differ. Use the same package type as your current design unless PCB re-layout is acceptable for your application.