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CBT3253C Datasheet

Part NameDescriptionManufacturer
CBT3253C DUAL 1-OF-4 FET MULTIPLEXER/DEMULTIPLEXER 5-V BUS SWITCH WITH –2-V UNDERSHOOT PROTECTION TI
Texas Instruments TI
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DESCRIPTION/ORDERING INFORMATION
The SN74CBT3253C is a high-speed TTL-compatible FET multiplexer/demultiplexer with low ON-state resistance (ron), allowing for minimal propagation delay. Active Undershoot-Protection Circuitry on the A and B ports of the SN74CBT3253C provides protection for undershoot up to –2 V by sensing an undershoot event and ensuring that the switch remains in the proper OFF state.

FEATURES
• SN74CBT3253C Functionally Identical to
   Industry-Standard ’3253 Function
• Undershoot Protection for Off-Isolation on A
   and B Ports up to –2 V
• Bidirectional Data Flow, With Near-Zero
   Propagation Delay
• Low ON-State Resistance (ron) Characteristics
   (ron = 3 Ω Typical)
• Low Input/Output Capacitance Minimizes
   Loading and Signal Distortion
   (Cio(OFF) = 5.5 pF Typical)
• Data and Control Inputs Provide Undershoot
   Clamp Diodes
• Low Power Consumption (ICC = 3 µA Max)
• VCC Operating Range From 4 V to 5.5 V
• Data I/Os Support 0 to 5-V Signaling Levels
   (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V)
• Control Inputs Can Be Driven by TTL or
   5-V/3.3-V CMOS Outputs
• Ioff Supports Partial-Power-Down Mode
   Operation
• Latch-Up Performance Exceeds 100 mA Per
   JESD 78, Class II
• ESD Performance Tested Per JESD 22
   – 2000-V Human-Body Model
      (A114-B, Class II)
   – 1000-V Charged-Device Model (C101)
• Supports I2C Bus Expansion
• Supports Both Digital and Analog
   Applications: USB Interface, Bus Isolation,
   Low-Distortion Signal Gating

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