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SN74CBT3253C

AKTIV

2-Kanal-FET-Busschalter, 5 V, 4:1, mit -2-V-Unterschwingungsschutz

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SN74CBT3253C

AKTIV
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Produktdetails

Protocols Analog Configuration 4:1 Number of channels 2 Bandwidth (MHz) 200 Ron (typ) (mΩ) 3000 Input/output voltage (min) (V) 0 Input/output voltage (max) (V) 5.5 Operating temperature range (°C) -40 to 85 ESD CDM (kV) 1 Input/output continuous current (max) (mA) 128 COFF (typ) (pF) 5.5 CON (typ) (pF) 22 OFF-state leakage current (max) (µA) 10 Ron (max) (mΩ) 12000 VIH (min) (V) 2 VIL (max) (V) 0.8 Rating Catalog
Protocols Analog Configuration 4:1 Number of channels 2 Bandwidth (MHz) 200 Ron (typ) (mΩ) 3000 Input/output voltage (min) (V) 0 Input/output voltage (max) (V) 5.5 Operating temperature range (°C) -40 to 85 ESD CDM (kV) 1 Input/output continuous current (max) (mA) 128 COFF (typ) (pF) 5.5 CON (typ) (pF) 22 OFF-state leakage current (max) (µA) 10 Ron (max) (mΩ) 12000 VIH (min) (V) 2 VIL (max) (V) 0.8 Rating Catalog
TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm) SSOP (DB) 16 48.36 mm² (6.2 mm × 7.8 mm) VQFN (RGY) 16 14 mm² (4 mm × 3.5 mm) SOIC (D) 16 59.4 mm² (9.9 mm × 6 mm) SSOP (DBQ) 16 29.4 mm² (4.9 mm × 6 mm)
  • 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 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
  • 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 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

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.

The SN74CBT3253C is organized as two 1-of-4 multiplexer/demultiplexers with separate output-enable (1OE, 2OE) inputs. The select (S0, S1) inputs control the data path of each multiplexer/demultiplexer. When OE is low, the associated multiplexer/demultiplexer is enabled, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the associated multiplexer/demultiplexer is disabled, and a high-impedance state exists between the A and B ports.

This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that damaging current will not backflow through the device when it is powered down. The device has isolation during power off.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

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.

The SN74CBT3253C is organized as two 1-of-4 multiplexer/demultiplexers with separate output-enable (1OE, 2OE) inputs. The select (S0, S1) inputs control the data path of each multiplexer/demultiplexer. When OE is low, the associated multiplexer/demultiplexer is enabled, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the associated multiplexer/demultiplexer is disabled, and a high-impedance state exists between the A and B ports.

This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that damaging current will not backflow through the device when it is powered down. The device has isolation during power off.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt SN74CBT3253C datasheet (Rev. B) 25.01.2007
Anwendungshinweis Selecting the Correct Texas Instruments Signal Switch (Rev. E) PDF | HTML 02.06.2022
Anwendungshinweis Multiplexers and Signal Switches Glossary (Rev. B) PDF | HTML 01.12.2021
Application brief Eliminate Power Sequencing with Powered-off Protection Signal Switches (Rev. C) PDF | HTML 06.01.2021

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SN74CBT3253C IBIS Model

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SOIC (D) 16 Ultra Librarian
SSOP (DBQ) 16 Ultra Librarian
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