USB-I2C Interface Adapters Comparison Chart
The Inter-Integrated Circuit (I2C) is a serial bus, designed by Philips. Only two bus lines are used to interconnect all the devices: a serial data line (SDA) and a serial clock line (SCL). This approach improves circuit simplicity and maximizes hardware efficiency. I2C bus is widely used for embedded applications, memory chips, audio and video equipment.
In this comparison chart we compare USB-I2C interface of DLN-series interface adapters. The comparison chart includes adapters from the cheapest to the most powerful DLN-series adapters. It can help you choose the best USB-I2C adapter for your purpose.
| USB-I2C Adapter |  DLN-1 PC-I2C/SPI/GPIO INTERFACE ADAPTER |
 DLN-2 USB-I2C/SPI/GPIO ADAPTER |
 DLN-4M MULTIPROTOCOL MASTER ADAPTER |
 USB-SPI MASTER & SLAVE ADAPTER - DLN-4S |
| I2C Interface Standard Mode |  1kHz - 100 kHz |
1kHz - 100 kHz |
1,47 kHz - 100 kHz |
1,47 kHz - 100 kHz |
| I2C Interface Fast Mode | 400 kHz |
400 kHz |
400 kHz |
400 kHz |
| I2C Interface Fast Mode Plus | Up to 1 MHz |
Up to 1 MHz |
Up to 1 MHz |
Up to 1 MHz |
| I2C Bus Voltage (Internal Pull-ups) | 3.3V or 5V | 3.3V or 5V | 3.3V | 3.3V |
| I2C Bus Voltage (External Pull-ups) | 2.3V-5V | 2.3V-5V | 2V-3.3V | 2V-3.3V |
| USB Interface | Full Speed (12MHz) |
Full Speed (12MHz) |
High Speed (480MHz) |
High Speed (480MHz) |
| I2C Interface Pull-Up Resistors | Configurable with solder bridges |
Configurable with jumpers |
Configurable with jumpers |
Configurable with jumpers |
| Interfaces | ||||
| I2C Master Interface | |
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| I2C Slave Interface |  |
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| Additional Interfaces | SPI Master Interface GPIO Interface ADC, PWM Pulse Counter |
SPI Master Interface GPIO Interface ADC, PWM Pulse Counter |
SPI Master Interface GPIO Interface ADC, PWM Pulse Counter UART |
SPI Master Interface SPI Slave Interface SPI Flash Interface GPIO Interface ADC, PWM Pulse Counter UART |
| Event-driven Interface | |
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| PC USB Host Powered | |
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| I2C GUI Demo Examples | |
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| Supported Operation Systems |   |
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| RoHS Compliant |  |
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| Certification | ISO 9001:2008 |
ISO 9001:2008 |
ISO 9001:2008 |
ISO 9001:2008 |
| USB-I2C Adapter | DLN-1 PC-I2C/SPI/GPIO INTERFACE ADAPTER |
DLN-2 USB-I2C/SPI/GPIO ADAPTER |
DLN-4M MULTIPROTOCOL MASTER ADAPTER |
USB-SPI MASTER & SLAVE ADAPTER - DLN-4S |