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Saleae Logic - 8-Channel USB Logic Analyzer

  • Description


    A logic analyzer is a device that lets you watch digital signals in your electronics project. Unlike an oscilloscope, its not good for measuring analog signals - but also unlike an oscilloscope, you can track 8 signals at time! So its a good complementary tool. This logic analyzer plugs into a computer and has easy to use, cross-platform software. This makes it small, portable and inexpensive. If you ever have to to debug SPI, i2c, serial, CAN, 1-wire, Manchester, biphase or other digital protocols, this tool is essential!


    • Speedy 24MHz Logic samples each channel at up to 24M times per second. A large fraction of practical, real world applications run at less than 10MHz, and Logic is ideal for these.
    • 8 Channels Logic has 8 inputs -- it can monitor 8 different digital signals at once. For many modern microcontroller-based designs, this is plenty.
    • 10 billion samples Logic can save as many as 10B samples, letting you capture even the most elusive events. No more dealing with frustratingly small sample buffers.
    • Comes complete Start debugging within 5 minutes of opening your new Logic; everything is included: An ultra-flexible 22AWG 64/40 wire harness, 9 high-quality micro-hook probes, a USB cable (2 meter mini-B to A), and a nice carrying case. Download the software from our site (see software)
    • Enclosure We love well made tools. That's why we make Logic's case out of custom CNC machined aluminum and make sure its anodized surface is finished to perfection.
    • Protection Logic's inputs are protected against overvoltage conditions via current-limiting resistors and ultra-low-capacitance diode clamps. A resettable fuse protects the USB ground return line to augment the USB host's existing protection.
  • Technical Details

    Technical Details+

    Geometry and Weight

    • Length & Width: 1.7 in (43.2mm)
    • Thickness: .365 in (9.3mm)
    • Volume: 1 in3 (16.4 cm3)
    • Weight: .9 oz (25.5 gm)


    • Input voltage range: -0.5V to 5.25V
    • Input Low Voltage: -0.5V to 0.8V
    • Input High Voltage: 2.0V to 5.25V
    • Works with 5V, 3.3V, 2.5V, 2.0V systems. May work with 1.8V but not recommended.
    • ESD protected per CE requirements
    • Over-voltage protection to +/- 15V. Not meant for continuous operation outside -0.5V to 5.25V.
    • Input Impedance: 1Mohm || 10pF (typical, approximate)
    • Error/Accuracy: pulse-width measurement: +/- 42ns (at 24MHz).

    Sample Rate & Depth

    • 24MHz. 16MHz, 12MHz, 8MHz, 4MHz, 2MHz, 1MHz, 500KHz, 250KHz, 200KHz, 100KHz, 50KHz, 25KHz; Note that achieving the highest sample rates requires low USB latency; this may not be achievable on all computers. Performance may improve with the removal of other USB devices, using a different USB host controller, or increasing the software's process priority.
    • 10B samples. Absolute max depends on data compressibility, available RAM and operating system. 10B samples assumes reasonably high compressibility.

    System Requirements

    • Windows XP (32-bit)
    • Windows Vista (32-bit or 64-bit)
    • Windows 7 (32-bit or 64-bit)
    • Mac OS X 10.4 Tiger or higher
    • Linux: recent Ubuntu, Fedora, or openSUSE. Other distributions are likely to work but not specifically supported.
    • USB 2.0

    What's in the Box

    • Logic (fully tested)
    • 1x9 Ultra-Flexible Test Lead Set
    • x9 Micro Hook Clips
    • USB Cable (2M length, A to mini-B)
    • Custom Carrying Case
    • Software not included — download here


    • Custom CNC machined aluminum enclosure
    • 2-part elastomer injection molded bottom cover
    • 4-layer PCB, professionally designed, laid out, and design reviewed


    • 1x9 male IDE .1 in pitch (aperture size: .110 in x .940 in; .030in radiused corners)
    • USB Mini-B


    • 50 mA Idle (from USB, typical)
    • 75 mA Sampling (from USB, typical)


    • RoHS Compliant
    • CE Certified

    Available Accessories

    • Extra 1x9 wire bundles
    • Extra x9 pack of test clips
    • 1x9 to 1x9 IDE cable
    • 1x9 IDE to individual wires cable

    Safety & Equipment Protection

    • Logic may not be used with DUTs (devices under test) which are not electrically isolated from MAINS (i.e. wall power).
    • DUTs which are battery powered, or USB powered (from the same computer as Logic) are acceptable.
    • DUTs powered by AC adapters which have only 2 prongs, and do not have an earth ground connection (such as most "wall warts"), usually provide MAINS isolated power and are acceptable.
    • For other DUTs, isolation can typically be achieved through the use of a dedicated isolation transformer (such as those made by Tripp-lite).
    • When using USB powered DUTs, special care should be taken to avoid connecting USB sourced power to Logic's ground, as this provides a short-circuit return path. While both Logic and USB ports are designed to survive a short circuit event, care should be taken to minimize its likelihood.
    • As an alternative to isolating the DUT from MAINS, you can isolate the PC instead, such as by using a Laptop running off of battery power. You must make sure the Laptop is not connected to other grounded equipment, such as a computer monitor.


    Software downloads

    Video tutorial



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