Abstract: This application note describes the differences between the DS2155 and DS26521 single chip transceivers. It contains a complete breakdown of all feature differences and compares the two devices on a register-by-register basis. The application note you have requested is available in Acrobat PDF format: APPLICATION NOTE 3686: DS2155 and DS26521 Software Comparison (PDF, 255kB) A free Acrobat PDF reader is available from: http://www.adobe.com/products/acrobat/readstep.html Related Parts   APP 3686: Dec 23, 2005 DS21455 Quad T1/E1/J1 Transceivers Full Data Sheet (PDF, 1.8MB) DS21458 Quad T1/E1/J1 Transceivers Full Data Sheet (PDF, 1.8MB) DS2155 T1/E1/J1 Single-Chip Transceiver Full Data Sheet (PDF, 2.0MB) Free Samples DS21Q55 Quad T1/E1/J1 Transceiver Full Data Sheet (PDF, 1.4MB) DS26521 Single T1/E1/J1 Transceiver Full Data Sheet (PDF, 1.7MB) Free Samples DS26528 Octal T1/E1/J1 Transceiver Full Data Sheet (PDF, 1.9MB) Free Samples Automatic Updates Would you like to be automatically notified when new application notes are published in your areas of interest? Sign up for EE-Mail™. We Want Your Feedback!   Download, PDF Format (255kB)  AN3686, AN 3686, APP3686, Appnote3686, Appnote 3686