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Product Detailed Parameters
- Description：IC MUX/DEMUX 2 X 4:1 16TSSOP
- Series：74CB
- Mfr：Texas Instruments
- Package：Tube
- Type：Multiplexer/Demultiplexer
- Circuit：2 x 4:1
- 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：16-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：16-TSSOP
- Grade：-
- Qualification：-
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Overview
The SN74CB3Q3253PW is a dual 1-of-4 FET multiplexer/demultiplexer bus switch manufactured by Texas Instruments. It operates within a VCC range of 2.3V to 3.6V and features 5V tolerant I/Os. The device provides high-bandwidth data paths up to 500MHz with low ON-state resistance (ron = 4Ω typical). It supports rail-to-rail switching, bidirectional data flow, and partial-power-down mode via Ioff. Packaged in a 16-pin TSSOP, it includes undershoot clamp diodes on data and control inputs.
Feature Summary
- High-bandwidth data path supporting frequencies up to 500MHz
- 5V tolerant I/Os compatible with powered-up or powered-down states
- Low and flat ON-state resistance for minimal propagation delay
- Supports partial-power-down operation through Ioff circuitry
Applications
- Video broadcasting IP-based multi-format transcoders
- Video communications systems
- USB interface connections
- Differential signal interface bus isolation
Procurement Notes
Verify the specific package suffix 'PW' corresponds to the 16-pin TSSOP configuration. Confirm that the ordering part number matches the exact SN74CB3Q3253 variant required for your design. Ensure compatibility with the specified voltage ranges and thermal requirements before finalizing procurement.
Selection Notes
Select this component when designing circuits requiring high-speed signal routing with low distortion. It is suitable for applications needing 5V tolerance on data lines while operating at lower supply voltages. Consider its bidirectional capabilities and low capacitance for maintaining signal integrity in broadband communication interfaces.
Part Context
This device belongs to the CB3Q family of low-voltage high-bandwidth bus switches from Texas Instruments. It utilizes a charge pump to elevate gate voltage, ensuring consistent ON-state resistance across the operating range. This technology enables efficient signal gating for digital and analog applications requiring precise control over data paths.
Replacement Considerations
SN74CB3Q3253PW
FAQ
How does the device handle partial-power-down scenarios?
The SN74CB3Q3253 supports partial-power-down mode using Ioff circuitry, which prevents damaging current backflow through the device when it is powered down.
What is the maximum switching frequency for the control inputs?
The maximum switching frequency for the OE or S control inputs is 20MHz.
