Saleae Logic - 8-Channel USB Logic Analyzer
Saleae Logic - 8-Channel USB Logic AnalyzerSaleae Logic - 8-Channel USB Logic AnalyzerSaleae Logic - 8-Channel USB Logic AnalyzerSaleae Logic - 8-Channel USB Logic Analyzer

Saleae Logic — 8-Channel USB Logic Analyzer

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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.

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)
1×9 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


1×9 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 1×9 wire bundles
Extra x9 pack of test clips
1×9 to 1×9 IDE cable
1×9 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.