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FST16211MTD Bus Switch 12 x 1:1 Equivalent & Substitute Parts
Part Overview
The FST16211MTD is a 12 x 1:1 bus switch logic IC manufactured by onsemi in a 56-TSSOP package. This component is classified as obsolete, with 1,980 units currently in stock. Bus switches of this configuration are used for signal routing and multiplexing applications requiring independent circuit control. Due to the obsolete status of the FST16211MTD, equivalent substitute parts from active product lines are necessary for new designs and long-term supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | FST16211MTD |
| Manufacturer | onsemi |
| Type | Bus Switch |
| Circuit Configuration | 12 x 1:1 |
| Independent Circuits | 2 |
| Voltage Supply Source | Single Supply |
| Voltage - Supply Range | 4V ~ 5.5V |
| Operating Temperature Range | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 56-TFSOP (0.240", 6.10mm Width) |
| Supplier Device Package | 56-TSSOP |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the FST16211MTD is determined by the following critical parameters:
- Circuit configuration (12 x 1:1 topology with 2 independent circuits)
- Voltage supply range compatibility (minimum 4V to 5.5V maximum)
- Operating temperature range (-40°C to 85°C)
- Surface mount packaging with 56-pin TSSOP or compatible package variants
- Moisture sensitivity level (MSL 1)
Substitute parts are grouped into two categories based on package compatibility:
Category 1: 56-TSSOP Package (Direct Package Match) Parts maintaining the exact 56-TFSOP (0.240", 6.10mm Width) package footprint provide direct PCB compatibility without layout modifications.
Category 2: Alternative 56-Pin Packages (Package Variants) Parts using 56-SSOP or 56-TVSOP packages maintain the same pin count and electrical specifications but require PCB footprint adjustment due to different package body dimensions.
Parameter Comparison
| Part Number | Manufacturer | Circuit Config | Voltage Supply | Temp Range | Package Type | Package Dimensions | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|
| FST16211MTD | onsemi | 12 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 56-TSSOP | 0.240" x 6.10mm | Obsolete | REACH Unaffected |
| SN74CBTH16211DGGR | Texas Instruments | 12 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 56-TSSOP | 0.240" x 6.10mm | Last Time Buy | ROHS3 Compliant |
| SN74CBT16211CDGGR | Texas Instruments | 12 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 56-TSSOP | 0.240" x 6.10mm | Active | ROHS3 Compliant |
| SN74CBTD16211DGGR | Texas Instruments | 12 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 56-TSSOP | 0.240" x 6.10mm | Active | ROHS3 Compliant |
| SN74CBT16211ADGVR | Texas Instruments | 12 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 56-TVSOP | 0.173" x 4.40mm | Last Time Buy | ROHS3 Compliant |
| SN74CBT16211CDGVR | Texas Instruments | 12 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 56-TVSOP | 0.173" x 4.40mm | Active | ROHS3 Compliant |
| SN74CBT16211ADLR | Texas Instruments | 12 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 56-SSOP | 0.295" x 7.50mm | Last Time Buy | ROHS3 Compliant |
| SN74CBT16211CDLR | Texas Instruments | 12 x 1:1 | 4.5V ~ 5.5V | -40°C ~ 85°C | 56-SSOP | 0.295" x 7.50mm | Active | ROHS3 Compliant |
| SN74CBT16811CDGGR | Texas Instruments | 12 x 1:1 | 4V ~ 5.5V | -40°C ~ 85°C | 56-TSSOP | 0.240" x 6.10mm | Active | ROHS3 Compliant |
Engineering Selection Recommendations
For Direct PCB Compatibility (No Layout Changes Required):
SN74CBT16211CDGGR is the primary substitute for the FST16211MTD. This part maintains identical 56-TSSOP packaging, operates within the required voltage and temperature ranges, and holds Active product status with ROHS3 compliance. With 2,320 units in stock, it provides immediate availability and long-term supply continuity.
SN74CBTD16211DGGR serves as an alternative direct substitute with identical package specifications and Active status. This part offers 3,900 units in inventory.
SN74CBT16811CDGGR provides equivalent functionality with Active product status and ROHS3 compliance. The voltage supply range extends to 4V minimum, matching the FST16211MTD specification exactly. Package dimensions are identical to the original part.
For Applications Permitting Package Variants:
SN74CBT16211CDGVR (56-TVSOP, 0.173" x 4.40mm) offers the highest inventory availability at 90,400 units with Active status and ROHS3 compliance. This option requires PCB footprint redesign but provides superior long-term supply security.
SN74CBT16211CDLR (56-SSOP, 0.295" x 7.50mm) maintains Active product status with 2,204 units available. This package variant also requires footprint modification.
For Last Time Buy Scenarios:
SN74CBTH16211DGGR and SN74CBT16211ADLR maintain Last Time Buy status with 929 and 2,100 units respectively. These parts are suitable for existing inventory management but should not be selected for new long-term designs.
Frequently Asked Questions (FAQ)
Q: Can SN74CBT16211CDGGR replace FST16211MTD without PCB modifications?
A: Yes. Both parts use the 56-TSSOP package with identical dimensions (0.240" x 6.10mm width). Pin configuration, voltage supply range (4.5V ~ 5.5V for the substitute exceeds the 4V minimum of the original), and operating temperature range (-40°C ~ 85°C) are compatible. No PCB layout changes are required.
Q: What is the voltage supply difference between FST16211MTD and SN74CBT16211CDGGR?
A: The FST16211MTD operates at 4V ~ 5.5V, while SN74CBT16211CDGGR operates at 4.5V ~ 5.5V. The substitute has a higher minimum voltage requirement of 0.5V. Designs operating at 4V to 4.5V must use SN74CBT16811CDGGR, which maintains the 4V minimum specification.
Q: Are all substitute parts ROHS3 compliant?
A: All Texas Instruments substitute parts listed are ROHS3 compliant. The original FST16211MTD carries REACH Unaffected status. All substitutes maintain REACH Unaffected designation.
Q: What is the difference between 56-TSSOP, 56-TVSOP, and 56-SSOP packages?
A: These are all 56-pin packages with different body dimensions. 56-TSSOP (0.240" width) and 56-TFSOP are equivalent and provide direct footprint compatibility with the original part. 56-TVSOP (0.173" width) is narrower and requires PCB footprint adjustment. 56-SSOP (0.295" width) is wider and also requires footprint modification. All maintain identical pin counts and electrical specifications.
Q: Which substitute offers the best long-term supply availability?
A: SN74CBT16211CDGVR in 56-TVSOP package provides the highest inventory at 90,400 units with Active product status. If direct package compatibility is required, SN74CBT16211CDGGR in 56-TSSOP package offers 2,320 units with Active status.
Q: Can I use SN74CBT16811CDGGR as a substitute?
A: Yes. SN74CBT16811CDGGR is electrically and mechanically compatible with FST16211MTD. It maintains the 4V minimum voltage specification, identical package dimensions, and Active product status. The base product number differs (74CBT16811 versus 74CBT16211), but the 12 x 1:1 circuit configuration and pin assignments are equivalent for this application.
Q: What is the MSL rating for substitute parts?
A: All substitute parts maintain MSL 1 (Unlimited) moisture sensitivity level, identical to the original FST16211MTD.
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