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Product Detailed Parameters
- Description：IC BUS SWITCH 8 X 1:1 20SOIC
- Series：74CBT
- Mfr：Texas Instruments
- Package：Bulk,Tube
- Type：Bus Switch
- Circuit：8 x 1:1
- Independent Circuits：1
- 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：20-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：20-SOIC
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Overview
The SN74CBT3345DW is an octal bus transceiver manufactured by Texas Instruments, designed for high-speed digital signal routing. It features a single 8-bit configuration with independent direction control and active pull-up resistors on all ports. The device operates within a supply voltage range of 4.5V to 5.5V and supports data rates up to 600Mbps. It utilizes a 20-pin SOIC package and maintains operation across an industrial temperature range from -40°C to +85°C.
Feature Summary
- Octal (8-bit) bidirectional bus switching architecture
- Independent direction control for each port
- Active pull-up resistors integrated on all ports
- High-speed performance supporting 600Mbps data rates
Applications
- High-speed data routing in consumer electronics
- Memory bus expansion and bridging
- Signal isolation between different voltage domains
- Portable equipment requiring low power consumption
Procurement Notes
Verify the specific suffix 'DW' corresponds to the 20-pin SOIC package variant when sourcing. Confirm RoHS compliance status and moisture sensitivity level requirements against current datasheet specifications. Ensure the operating voltage aligns with the 4.5V to 5.5V range defined for this component series.
Selection Notes
Select this component for applications requiring octal bus switching with independent direction control. It is suitable for systems needing active pull-ups to maintain signal integrity during idle states. Consider the SOIC package constraints for PCB layout and thermal management relative to alternative packages like TSSOP or VQFN.
Part Context
This part belongs to the Texas Instruments SN74CBT3345C family of octal bus transceivers. It shares functional similarities with the SN74CBT3245 but includes additional active pull-up features. The DW suffix specifically denotes the standard plastic small-outline package, distinguishing it from tape-and-reel or other form factors within the same logical family.
Replacement Considerations
SN74CBT3245DW: Similar octal bus switch without active pull-ups. SN74CBT3345CPWR: Same function in TSSOP-20 package. SN74CBT3345DBQR: Same function in QSOP-20 package.
