Saleae, Inc
Saleae Logic 8 Logic/Analogue Analyser
Saleae Logic 8 Logic/Analogue Analyser
SKU: SAL-00111
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Key Features
Overview
The Saleae Logic 8 is a professional-grade mixed-signal USB logic analyser designed for embedded debugging, firmware validation, and protocol decoding. Compact yet powerful, this analyser offers eight channels that can be configured as digital, analogue, or both—providing unparalleled insight into mixed-signal systems.
With digital sample rates up to 100 MS/s on three channels (25 MS/s on all 8) and analogue capture at 10 MS/s (10-bit resolution), the Logic 8 delivers high-fidelity signal analysis with 25 MHz digital and 1 MHz analogue bandwidth. Real-time streaming directly into your computer’s RAM enables virtually unlimited capture length for tracking long or rare events.
The intuitive, cross-platform Saleae Logic 2 software supports over 24 built-in protocol decoders (SPI, I²C, UART, CAN, USB, JTAG, HDMI-CEC, and more), plus extensibility via plugin SDK and community decoders. Built to last, it features ±25 V input protection, a durable enclosure, and includes a 3-year no-questions-asked warranty and 180-day returns—trusted reliability for professional engineers.
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Why Engineers Choose The Saleae Logic 8 Logic/Analogue Analyser
Unlimited Capture via Real-Time Streaming
Fully Mixed-Signal on All 8 Channels
Compact Build with 3-Year Warranty
Full Description
Saleae Logic 8 is an 8-channel mixed-signal logic analyser designed for electronic design engineers who need to see both digital and analogue signals on the same timeline. Each of the eight inputs can be configured for digital or analogue capture, with digital sample rates up to 100 MS/s on three channels or 25 MS/s on all eight, and analogue sampling up to 10 MS/s at 10-bit resolution (≈1 MHz bandwidth). Combined with unlimited USB streaming and built-in protocol decoding for SPI, I²C, UART, CAN and more, it provides a powerful, compact tool for rapid debugging and validation.
Mixed-Signal Capture on Every Channel
All eight inputs can capture both digital and analogue signals simultaneously. With ±25 V input protection and software-adjustable thresholds, the Logic 8 connects safely to logic families from 1.2 V up to 5.5 V. For example, you can watch an I²C transfer at 400 kHz while monitoring the 3.3 V rail’s droop at the same instant. This makes it possible to identify not only that a transaction failed, but exactly why, by correlating protocol errors with analogue behaviour. The benefit is confidence in diagnosing root causes without switching between instruments.
Sampling Performance for Embedded Systems
The Logic 8 offers a 100 MS/s digital sample rate with three channels enabled, 50 MS/s with six channels, and 25 MS/s when all eight are active. Its analogue mode records at 10 MS/s, 10-bit resolution, with about 1 MHz analogue bandwidth. This covers most microcontroller buses such as SPI up to 25 MHz, UARTs at several Mbaud, and CAN or LIN networks, while also capturing analogue effects like ringing, crosstalk, and ground bounce. The benefit is full visibility of both the digital logic and the analogue environment that affects it.
Unlimited Streaming for Rare Event Detection
Rather than relying on a small on-device buffer, the Logic 8 streams data continuously over USB 2.0 into host RAM. Capture depth is limited only by your computer’s memory, allowing sessions that last minutes or hours. This capability is essential for catching elusive issues such as a watchdog reset after 45 minutes of runtime, or a UART framing error that appears once every 10,000 frames. The benefit is that rare and intermittent faults can finally be recorded and analysed with full timing context.
Protocol Analysis Made Simple
The Logic 2 software provides built-in support for more than 20 protocol analysers, including SPI, I²C, UART, CAN, LIN, MDIO and USB Low/Full-Speed. Decoded frames appear directly on the captured waveforms, aligned with the original edges. For example, you can inspect an SPI command at 12 MHz, see the data bytes decoded, and immediately correlate them with the analogue waveform. This eliminates manual decoding and dramatically reduces debug time, while ensuring protocol correctness and electrical integrity are considered together.
Flexible Logic Levels and Safe Probing
With support for logic families from 1.2 V up to 5.5 V and robust ±25 V protection, the Logic 8 can be safely connected to modern low-voltage microcontrollers, 3.3 V sensors, and legacy 5 V devices. Software-controlled thresholds allow precise adaptation to the system under test. The benefit is reliable probing across a wide range of designs without risking damage to the analyser or your circuit.
Everyday Debugging Scenarios
The Logic 8 is just as valuable for simple checks as for complex investigations. It can confirm that a UART running at 1 Mbaud is transmitting correctly, verify that an I²C EEPROM responds at 100 kHz, or ensure that an SPI DAC receives a 16-bit configuration word within 10 ms of reset. For longer sessions, continuous streaming makes it possible to capture CAN arbitration errors that only occur during heavy load, or to log a serial console until a random missing character appears. The benefit is clear visibility of both routine protocol traffic and hard-to-find faults.
Portable and Cross-Platform
Measuring just 53 × 53 × 12 mm and weighing around 60 g, the Logic 8 is compact and USB-powered, requiring no external supply. It is easy to move between benches or bring to a customer site. The Logic 2 software runs on Windows, macOS and Linux, and captures can be shared without the hardware attached. The benefit is a highly portable tool that fits seamlessly into collaborative workflows across different environments.
Why Engineers Choose Logic 8
By combining 8 mixed-signal channels, 100 MS/s digital sampling, 10 MS/s 10-bit analogue capture, support for 1.2–5.5 V logic with ±25 V protection, and unlimited USB streaming, the Saleae Logic 8 delivers the performance needed to solve both everyday debug tasks and elusive intermittent failures. Its integration of protocol decoding, analogue insight and long-duration recording shortens debug cycles and gives engineers the confidence to move from symptom to root cause quickly.
Related Products
Engineers needing more performance can upgrade to the Saleae Logic Pro 8 logic analyser, which provides 8 channels with up to 500 MS/s digital and 50 MS/s analogue sampling. For wider bus analysis, the Saleae Logic Pro 16 logic analyser offers 16 channels of mixed-signal capture at the same high speeds. For reliable probing, the Saleae Logic 2×4 Header (Gen 2) Cable provides a secure, durable connection for consistent measurement quality.
| General Information | |
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Part Number (SKU) |
SAL-00111
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Number of Channels |
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Bandwidth |
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Sample Rate |
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Touchscreen |
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Weight |
0.5 kg
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EAN |
5055383614264
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Questions and Answers
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What Is the Actual Bandwidth and Sampling Rate Performance of the Logic 8?
Digital sampling is 100 MS/s on up to 3 channels, 50 MS/s on up to 6 channels, or 25 MS/s on all 8. Maximum digital bandwidth is 25 MHz, enough for most embedded work, including USB Full Speed, moderate-speed SPI and general microcontroller debugging.
Analogue sampling is 10 MS/s with 1 MHz bandwidth and 10-bit resolution. The USB 2.0 interface handles these rates while streaming in real time to your computer's memory.
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Does the Logic 8 Software Work Without the Hardware for Analysis and Sharing?
Yes. The Saleae Logic software runs fully without the hardware, so you can analyse earlier captures, share recordings and demonstrate protocol behaviour.
Save complete capture sessions and send them to other engineers, who can analyse them in the free software without owning the hardware. This helps with collaborative debugging, remote troubleshooting, technical support and documentation.
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What Warranty and Support Does Saleae Provide for the Logic 8?
Logic 8 has a 3-year no-questions-asked warranty covering any malfunction regardless of cause, with all warranty service handled directly by Saleae. Saleae provides online documentation, community forums and technical support.
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Can I Extend Logic 8's Capabilities with Custom Protocol Analysers?
Yes. The Protocol Analyzer SDK and Extension API let you create custom low-level protocol analysers, high-level analysers and measurement extensions. High-level analysers are written in Python and low-level decoders in C++.
The Saleae community has contributed many extensions for specialised protocols, and Saleae provides documentation and templates for building analysers for proprietary protocols or specific measurement needs.
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Is the Logic 8 Suitable for Professional Embedded Development Work?
Yes. Logic 8 is widely used in professional embedded development, valued for its reliability, protocol support and software.
Real-time streaming and unlimited memory depth help when debugging complex systems where analysers with limited memory can miss critical events. Simultaneous digital and analogue capture gives insight separate instruments can't, and the portable, rugged design suits both lab and field work. Many engineers choose it over much more expensive alternatives for its usability and feature set.
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What Are the Best Applications for the Logic 8 Analyser?
Logic 8 is an all-purpose mixed-signal recorder, protocol decoder and automated test probe. Typical uses:
- firmware bugs
- mixed-signal glitches
- power-integrity problems
- reverse engineering
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What Makes the Saleae Logic 8 Different From Traditional Logic Analysers?
Logic 8 streams data in real time to your computer's RAM, so memory depth is virtually unlimited, unlike traditional analysers with fixed buffers. It's a portable USB device with professional capabilities, and its dual-purpose inputs capture digital and analogue signals at the same time.
Instead of the complex button interfaces of traditional analysers, it uses a cross-platform application with built-in protocol decoders and community extensions.
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How Does the Unlimited Memory Depth Feature Actually Work?
Logic 8 streams captured data over USB to your computer's RAM in real time, so there's no fixed hardware buffer. Capture length is limited by available system memory and how dense the recorded data is.
That lets you capture long sequences or rare intermittent events that a fixed hardware buffer would miss.
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Can the Logic 8 Simultaneously Capture Digital and Analogue Signals on the Same Channels?
Yes. All 8 channels can be set as digital, analogue or both at once, so you can correlate digital protocol activity with the analogue signal behind it. Digital sampling runs at up to 100 MS/s and analogue at 10 MS/s with 10-bit resolution and 1 MHz bandwidth, all time-correlated.
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What Protocol Decoders Are Included with the Logic 8?
Logic 8 has built-in protocol analysers including:
- SPI
- I2C
- Serial (UART)
- 1-Wire
- CAN
- I2S
- JTAG
- LIN
- Manchester
- MDIO
- MIDI
- Modbus
- SMBus
- USB
- HDMI-CEC
- HD44780
- HDLC
- DMX-512
You can add community-contributed extensions or write your own protocol analysers.
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How Many Channels Does Logic 8 Provide, and Can They Record Both Digital and Analog Signals?
Logic 8 has eight dual-purpose inputs, and yes, each can be set as a digital channel, an analogue channel or both at once. That gives up to 8 digital + 8 analogue inputs in one capture.
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What Signal Voltages Are Supported and How Well Is the Hardware Protected?
Digital inputs read logic-low below 0.6 V and logic-high above 1.2 V, so you can probe 1.8 V to 5.5 V CMOS/TTL systems directly. All inputs are protected against continuous voltages from -25 V to +25 V.
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Which Operating Systems and Host Hardware Work with Logic 8 Software?
The free Logic 2 software runs on Windows 10/11, macOS 10.13+ and modern Linux distros. Logic 8 needs only a USB 2.0 port (faster hosts allow longer captures). PCs need an SSE2-capable CPU (virtually all processors released since 2001).
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What Comes in the Box, and Do I Need Anything Else to Start Capturing?
You get:
- Logic 8 unit
- two 8-wire harnesses, each with a dedicated ground lead
- 16 micro-grabber test clips
- USB cable
- zipped carry case
That's everything you need to plug into your PC and start measuring.
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