SCDS168A May   2004  – September 2015 SN74CB3Q16244

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description continued
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Switching Characteristics
    7. 7.7 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
    4. 9.4 Device Functional Modes
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curve
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Community Resources
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DGG|48
  • DL|48
  • DGV|48
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9 Detailed Description

9.1 Overview

The SN74CB3Q16244 is part of the CB3Q family of switches. The SN74CB3Q16244 is a 16-bit FET bus switch in which 4 Output Enable pins each control a set of 4 switches totaling 16 switches.

SN74CB3Q16244 SIMP_SCHEM_CDS168.gif Figure 3. Simplified Schematic, Each FET Switch (SW)

9.2 Functional Block Diagram

SN74CB3Q16244 LD-CDS168.gif Figure 4. Logic Diagram (Positive Logic)

9.3 Feature Description

The SN74CB3Q16244 device has a high-bandwidth data path (up to 500 MHz) and has 5-V tolerant I/Os with the device powered up or powered down. It also has low and flat ON-state resistance (ron) characteristics over operating range (ron = 5 Ω Typical)

This device also has rail-to-rail switching on data I/O ports for 0 to 5-V switching with 3.3-V VCC and 0 to 3.3-V switching with 2.5-V VCCas well as bidirectional data flow with near-zero propagation delay and low input and output capacitance that minimizes loading and signal distortion (Cio(OFF) = 4 pF Typical)

The SN74CB3Q16244 also provides a fast switching frequency (fOE = 20 MHz Maximum) with data and control inputs that provide undershoot clamp diodes as well as low power consumption (ICC = 1 mA Typical)

The VCC operating range is from 2.3 V to 3.6 V and the data I/Os support 0 to 5-V signal levels of (0.8-V, 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, 5-V)

The control inputs can be driven by TTL or 5-V and 3.3-V CMOS outputs, and Ioff supports partial-power-down mode operation.

9.4 Device Functional Modes

Table 1 lists the functional modes of the SN74CB3Q16244.

Table 1. Function Table
(Each Multiplexer/Demultiplexer)

INPUT INPUT/OUTPUT FUNCTION
OE A
L B A port = B port
H Z Disconnect