SN74CB3Q32245ZKER by Texas Instruments | Bus Switch | Avnet ASIA

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SN74CB3Q32245ZKER

Texas Instruments

Bus Switch 4-Element CMOS 32-IN 96-Pin BGA MICROSTAR T/R

Manufacturer Part #: SN74CB3Q32245ZKER

Alternate Part #: SN74CB3Q32245ZKER


legend RoHS Compliant

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The SN74CB3Q32245 is a high-bandwidth FET bus switch utilizing a charge pump to elevate the gate voltage of the pass transistor, providing a low and flat ON-state resistance (ron). The low and flat ON-state resistance allows for minimal propagation delay and supports rail-to-rail switching on the data input/output (I/O) ports. The device also features low data I/O capacitance to minimize capacitive loading and signal distortion on the data bus. Specifically designed to support high-bandwidth applications, the SN74CB3Q32245 provides an optimized interface solution ideally suited for broadband communications, networking, and data-intensive computing systems.

The SN74CB3Q32245 is organized as four 8-bit bus switches with separate output-enable (1OE, 2OE, 3OE, 4OE) inputs. It can be used as four 8-bit bus switches, two 16-bit bus switches, or as one 32-bit bus switch. When OE is low, the associated 8-bit bus switch is ON and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the associated 8-bit bus switch is OFF, 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 circuitry prevents damaging current 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.

Key Features

  • Member of the Texas Instruments Widebus+™ Family
  • High-Bandwidth Data Path (Up to 500 MHz)
  • 5-V-Tolerant I/Os with Device Powered Up or Powered Down
  • Low and Flat ON-State Resistance (ron) Characteristics Over Operating Range (ron = 5 Ω Typical)
  • Rail-to-Rail Switching on Data I/O Ports
    • 0- to 5-V Switching With 3.3-V VCC
    • 0- to 3.3-V Switching With 2.5-V VCC
  • Bidirectional Data Flow, With Near-Zero Propagation Delay
  • Low Input/Output Capacitance Minimizes Loading and Signal Distortion (Cio(OFF) = 4 pF Typical)
  • Fast Switching Frequency (fOE\ = 20 MHz Max)
  • Data and Control Inputs Provide
  • Undershoot Clamp Diodes
  • Low Power Consumption (ICC = 2 mA Typical)
  • VCC Operating Range From 2.3 V to 3.6 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 Both Digital and Analog Applications: PCI Interface, Differential Signal Interface, Memory Interleaving, Bus Isolation, Low-Distortion Signal Gating
  • Technical Attributes

    Description
    Value
    Find similar Parts
    Number of Elements per Chip
    4
    Operating Temperature
    -40 to 85 °C
    Mounting
    Surface Mount
    Maximum High Level Output Current
    -64 mA
    Configuration
    8 x 1:1
    Maximum Propagation Delay Time @ Maximum CL
    0.3@3.3V ns
    Typical Operating Supply Voltage
    2.5|3.3 V
    Supplier Package
    BGA MICROSTAR
    Number of Inputs per Chip
    32
    Product Dimensions
    13.5 x 5.5 x 0.85 mm
    Number of Outputs per Chip
    32
    Minimum Operating Supply Voltage
    2.3 V
    Maximum On Resistance
    6 Ohm
    MSL Level
    3
    Maximum Quiescent Current
    4000 uA
    Screening Level
    Commercial
    Typical Quiescent Current
    2000 uA
    Pin Count
    96
    Propagation Delay Test Condition
    50 pF
    Maximum Low Level Output Current
    64 mA
    Fabrication Technology
    CMOS
    Maximum Operating Supply Voltage
    3.6 V
    Max Processing Temp
    260
    Logic Function
    Bus Switch
    Lead Finish
    Tin/Silver/Copper

    ECCN / UNSPSC

    Description
    Value
    ECCN:
    EAR99
    SCHEDULE B:
    8504.5000-00
    HTSN:
    8504.5000-00
    UNSPSC:
    32101600
    UNSPSC VERSION:
    V15.1101

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