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Product Detailed Parameters
- Description：IC BUS SWITCH 8 X 1:1 20SOIC
- Series：74CB
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Type：Bus Switch
- Circuit：8 x 1:1
- Independent Circuits：1
- Current - Output High, Low：-
- Voltage Supply Source：Single Supply
- Voltage - Supply：2.3V ~ 3.6V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：20-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：20-SOIC
- Grade：-
- Qualification：-
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Overview
The SN74CB3T3245DWRG4 is an 8-bit FET bus switch manufactured by Texas Instruments, designed for low-voltage applications. It operates with a supply voltage range of 2.3 V to 3.6 V and features a 5-V tolerant level shifter. The device is housed in a 20-pin SOIC package and supports bidirectional data transmission. Key electrical parameters include a maximum on-resistance of 8.5 ohms, typical off-state capacitance of 5 pF, and a bandwidth of 100 MHz. It functions within a temperature range of -40°C to 85°C.
Feature Summary
- Provides powered-off protection to prevent current leakage when the device is unpowered.
- Enables signal path translation between different voltage domains using a 5-V tolerant level shifter.
- Supports bidirectional data flow for efficient bus switching applications.
Applications
- Portable equipment requiring low-voltage operation
- Consumer electronics utilizing 2.5-V or 3.3-V supplies
- Computing and peripheral systems needing level shifting
Procurement Notes
Verify the complete part number including the suffix 'RG4' to ensure compliance with RoHS standards and lead-free manufacturing requirements. Confirm the SOIC-20 package type matches your PCB footprint design. Check the moisture sensitivity level (MSL 1) for proper storage and handling procedures during assembly. Ensure the operating temperature range meets your specific environmental conditions.
Selection Notes
Select this component for designs requiring low on-resistance and high bandwidth in a compact surface-mount package. It is suitable for replacing older bus drivers where power consumption and signal integrity are critical. Consider the 5-V tolerance feature if interfacing with higher voltage logic levels without additional components.
Part Context
This device belongs to the CB3T/3VT series of low-voltage bus switches from Texas Instruments. It is part of a family of components designed for portable and battery-powered applications. The 'G4' suffix indicates a specific manufacturing revision compliant with environmental directives.
Replacement Considerations
Compatible alternatives include the SN74CB3T3245PW and SN74CB3T3245PWE4, which offer identical functionality in TSSOP packages. Verify pin compatibility and package dimensions before substitution.
