FSTUD16211MTDX Bus Switch 12 x 1:1 Equivalent & Substitute Parts

Part Overview

The FSTUD16211MTDX is a 12 x 1:1 bus switch logic IC manufactured by onsemi in a 56-TSSOP package. This component functions as a high-speed multiplexer for digital signal routing applications. The part is currently obsolete, making equivalent substitute parts necessary for ongoing design support, maintenance, and new production requirements. Substitute parts must maintain identical electrical specifications and compatible packaging to ensure direct replacement capability.

Substiute Parts

FSTUD16211MTDX

onsemiIn Stock: 854FSTUD16211MTDX Datasheet

Current PartRFQ

SN74CBT16211CDGVR

Texas InstrumentsIn Stock: 90460SN74CBT16211CDGVR Datasheet

SimilarRFQ

SN74CBT16211CDL

Texas InstrumentsIn Stock: 1512SN74CBT16211CDL Datasheet

SimilarRFQ

SN74CBT16211CDLR

Texas InstrumentsIn Stock: 2308SN74CBT16211CDLR Datasheet

SimilarRFQ

SN74CBT16211CDGGR

Texas InstrumentsIn Stock: 2396SN74CBT16211CDGGR Datasheet

Parametric EquivalentRFQ

SN74CBTD16211DGGR

Texas InstrumentsIn Stock: 3928SN74CBTD16211DGGR Datasheet

Parametric EquivalentRFQ

SN74CBTH16211DGGR

Texas InstrumentsIn Stock: 955SN74CBTH16211DGGR Datasheet

Parametric EquivalentRFQ

SN74CBTS16211DGGR

Texas InstrumentsIn Stock: 8301SN74CBTS16211DGGR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FSTUD16211MTDX are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Circuit configuration: 12 x 1:1
• Independent circuits: 2
• Voltage supply range: 4.5V ~ 5.5V
• Operating temperature range: -40°C ~ 85°C
• Single supply operation

Mechanical Parameters (Must Match or Be Compatible):

• Package type: 56-TSSOP or equivalent 56-pin thin shrink small outline packages
• Mounting type: Surface Mount
• Moisture sensitivity level: MSL 1 or better

Compliance Parameters:

• REACH Status: REACH Unaffected
• ECCN: EAR99
• HTSUS: 8542.39.0001

Substitute parts are grouped into two categories: Parametric Equivalents (identical package and specifications) and Similar Parts (alternative packages with identical electrical performance).

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Identical Package):

SN74CBT16211CDGGR is the primary substitute for FSTUD16211MTDX. Both parts use the 56-TSSOP package with 6.10mm width, ensuring mechanical and electrical compatibility without PCB layout modifications. This part is manufactured by Texas Instruments, carries Active product status, and is ROHS3 compliant with 2320 units in stock.

SN74CBTD16211DGGR provides an alternative parametric equivalent in the same 56-TSSOP package. The 74CBTD series maintains identical electrical specifications and is currently Active with 3900 units available.

Alternative Packages (Electrical Equivalents):

SN74CBT16211CDLR and SN74CBT16211CDL use the 56-SSOP package (7.50mm width) instead of TSSOP. These parts are electrically identical but require PCB layout verification due to increased package width. Both are Active products with ROHS3 compliance.

SN74CBT16211CDGVR uses the 56-TVSOP package (4.40mm width), offering the narrowest footprint. This configuration is suitable for space-constrained applications and has the highest inventory availability at 90400 units.

Avoid for New Designs:

SN74CBTH16211DGGR and SN74CBTS16211DGGR carry Last Time Buy status, indicating discontinued production. These parts should not be selected for new designs requiring long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can SN74CBT16211CDGGR replace FSTUD16211MTDX directly without PCB changes?

A: Yes. Both parts use the 56-TSSOP package with identical 6.10mm width, pin count, and electrical specifications. No PCB layout modifications are required.

Q: What is the difference between 56-TSSOP and 56-SSOP packages?

A: The 56-TSSOP (thin shrink small outline package) has a 6.10mm body width, while 56-SSOP (small outline package) has a 7.50mm width. Both are surface-mount packages with identical pin pitch and electrical performance. PCB footprint verification is required when switching between these package types.

Q: Why does SN74CBT16211CDGVR have significantly higher inventory?

A: The 56-TVSOP package (4.40mm width) is a narrower variant used in space-constrained applications. Higher inventory reflects broader market demand for this compact form factor.

Q: Are all substitute parts ROHS3 compliant?

A: All Texas Instruments substitute parts listed are ROHS3 compliant. The original FSTUD16211MTDX does not specify RoHS status but is REACH Unaffected, matching all substitutes.

Q: What is the difference between 74CBT, 74CBTD, and 74CBTH series?

A: All three series maintain identical 12 x 1:1 bus switch functionality and electrical specifications. Series designation reflects internal design variations. 74CBT is the standard series (Active), 74CBTD is an alternative variant (Active), and 74CBTH is an older variant (Last Time Buy).

Q: Can I use parts with Last Time Buy status in production?

A: Last Time Buy parts have limited remaining inventory and discontinued production. SN74CBTH16211DGGR and SN74CBTS16211DGGR should only be used for legacy system maintenance, not new production designs.

Q: Are all parts rated for -40°C to 85°C operation?

A: Yes. All substitute parts maintain the identical -40°C to 85°C operating temperature range and 4.5V to 5.5V supply voltage specification.