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Product Detailed Parameters
- Description：IC BUS SWITCH 1 X 1:1 14TSSOP
- Series：74CBT
- Mfr：Texas Instruments
- Package：Bulk,Tube
- Type：Bus Switch
- Circuit：1 x 1:1
- Independent Circuits：4
- Current - Output High, Low：-
- Voltage Supply Source：Single Supply
- Voltage - Supply：4.5V ~ 5.5V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：14-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：14-TSSOP
- Grade：-
- Qualification：-
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Overview
The SN74CBT3126PW is a low-voltage quadruple FET bus switch manufactured by Texas Instruments. It operates within a supply voltage range of 2.3 V to 3.6 V and features four independent 1:1 switches in a 14-TSSOP package. The device supports powered-off protection, ensuring no current flows from the input to the output when power is removed. It is designed for applications requiring SPI and JTAG signal support with low on-resistance.
Feature Summary
- Provides four independent bidirectional bus switches for signal routing
- Includes powered-off protection to prevent back-powering during power-down states
- Supports high-speed digital signals including SPI and JTAG protocols
Applications
- SPI interface signal switching
- JTAG boundary scan circuitry
- Low-voltage data bus isolation
Procurement Notes
Verify the specific suffix 'PW' corresponds to the TSSOP-14 tube packaging variant. Confirm RoHS compliance status and lead times directly with authorized distributors or Texas Instruments, as availability varies by region and production cycle. Ensure the design accommodates the specified 2.3V to 3.6V operating range.
Selection Notes
Select this component for designs requiring low-voltage operation between 2.3V and 3.6V. It is suitable for replacing older logic families where powered-off protection is critical to prevent bus contention. Consider the 14-TSSOP package constraints for PCB layout and thermal management requirements.
Part Context
This part belongs to the SN74CBT3126 family of low-voltage quadruple FET bus switches. It is functionally similar to other variants in the series but distinguished by its specific package type and manufacturing revision. The device is part of Texas Instruments' broader portfolio of level-shifting and switching solutions.
Replacement Considerations
SN74CBTLV3126PW
FAQ
Does the SN74CBT3126PW support powered-off protection?
Yes, the device includes powered-off protection, which prevents current from flowing through the I/O pins when the device is powered down.
What is the maximum supply voltage for this component?
The maximum supply voltage (Vdd) for the SN74CBT3126PW is 3.6 V.
