Not sure which tool is right for you? The following table breaks down the key features for our I2C/SPI Total Phase products. Detailed technical information for all these devices can be found in their respective datasheets. If you need assistance choosing the right I2C or SPI host adapter, please review our article, Choosing the Right Total Phase Host Adapter.

Part Number	TP240141	TP280121	TP500110	TP320121
User Manual	HTML	HTML	HTML	HTML
Datasheet	PDF	PDF	PDF	PDF
Product Photo
RoHS Compliant
I2C Master	Up to 800 kHz 1		Up to 3.4 MHz
I2C Slave	Up to 800 kHz 1		Up to 3.4 MHz
SPI Master	Up to 8 MHz 2	up to 40 MHz+ 3	Up to 80 MHz
SPI Slave	Up to 4 MHz 2		Up to 20 MHz
GPIO			Up to 16
I2C Monitor				up to 4 MHz
SPI Monitor				up to 24 MHz
Windows, Linux & Mac OS X
USB Bus Powered Device	Full-Speed	High-Speed	High-Speed	High-Speed
Software GUI
Development API / DLL
LabVIEW Driver
Dimensions	L: 3.5" (8.9 cm) W: 1.6" (4.1 cm) D: 0.9" (2.2 cm)	L: 3.5" (8.9 cm) W: 1.6" (4.1 cm) D: 0.9" (2.2 cm)	L: 4.55" 11.6 cm) W: 3.05" (7.7 cm) D: 1.15" (2.9 cm)	L: 4.6" (11.7 cm) W: 2.75" (7.0 cm) D: 1.1" (2.8 cm)

¹Actual system bus speed may vary as a function of capacitance.

²The quoted values are intra-byte speeds. Please refer to the datasheet for timing restrictions.

³Customers have successfully over-clocked the Cheetah SPI adapter to 50MHz.

Total Phase also has a number of accessories that can be used in conjunction with the products above.