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SAP5 - Block Diagram
SAP5 - Application Circuit


AS-Interface Spec. V3.0 Compliant Universal AS-i IC

The SAP5S/SAP51 is a next-generation CMOS integrated circuit for AS-Interface networks. This low-level field bus AS-i (Actuator Sensor Interface) was designed for easy, safe, and cost-effective inter-connection of sensors, actuators, and switches. It transports both power and data over the same two-wire unshielded cable.

The SAP5S/SAP51 is used as part of a master or slave node and functions as an interface to the physical bus. It provides the power supply, physical data transfer, and communication protocol handling. The SAP5S/SAP51 is fully compliant with the AS Interface Complete Specification V3.0. It is function and pin compatible with the SAP4.1 (AS2702).The SAP5S/SAP51 can be programmed by the user to operate in Standard Slave Mode, Safety Mode (SAP5S only), or Master Mode. The special AS i Safety Mode (SAP5S only) assures short response times regarding security-related events.

All configuration data are stored in an internal EEPROM that can be easily programmed by a stationary or handheld programming device. The SAP5S/SAP51 is optimized for harsh environments by its special burst protection circuitry and excellent electromagnetic compatibility.


  • Compliant with the AS-Interface Complete Specification V3.0
  • Universal application: slaves, masters, repeaters
  • Integrated safety code generator (SAP5S only)
  • On-chip electronic inductor: 55mA current drive capability
  • Two LED outputs to support all AS-Interface Complete Specification V3.0 status indication modes
  • User programmable to operation in Standard Slave Mode, Safety Mode, or Master Mode
  • Supports 5.33 and 16 MHz crystals by automatic frequency detection
  • Data pre-processing functions
  • Clock and communication watchdogs for high system security

Product Specification

FunctionAdvanced Features
Interface for ASI 3.0Safety Code Generator

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. RangeCarrier TypeSample & Buy
SAP51D-A-G1-RActivePSG20SOIC20-40 to 85°CReelCheck Availability
SAP51D-A-G1-TActivePSG20SOIC20-40 to 85°CTubeCheck Availability
SAP51D-B-G1-RActivePSG16SOIC16-40 to 85°CReelCheck Availability
SAP5SD-A-G1-RActivePSG20SOIC20-40 to 85°CReelCheck Availability
SAP5SD-A-G1-TActivePSG20SOIC20-40 to 85°CTubeCheck Availability
SAP5SD-B-G1-RActivePSG16SOIC16-40 to 85°CReelCheck Availability
SAP5SD-B-G1-TActivePSG16SOIC16-40 to 85°CTubeCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
AS-Interface Evaluation Tools Feature Sheet Short Form Datasheet PDF 76 KB Apr 21, 2016
SAP5 Short-form Datasheet Short Form Datasheet PDF 80 KB Jan 28, 2016
SAP5 Datasheet Datasheet PDF 867 KB Jan 28, 2016
User Guides & Manuals
AS-Interface Programmer V2.0 USB User Manual Manual PDF 1.29 MB Aug 4, 2016
SAP5 Application Note - EEPROM Programming Manual PDF 154 KB Apr 20, 2016
Apps Notes & White Papers
AS-Interface Application Note - ASI4U and SAP5 Master Mode Application Note PDF 490 KB Apr 20, 2016
IDT CAD Altium Libraries for AID Products Rev 20160819 PCB Design Files ZIP 1.20 MB Aug 19, 2016
AS-I Family Application Note - Electrical Inductor Schematic PDF 107 KB May 1, 2016
SAP5 - Release Notes for Migration to Revision D Silicon Technical Brief PDF 228 KB Apr 21, 2016

Software & Tools

Title Type Format File Size Datesort icon
AS-I Programmer Software Rev. 2.50 Software ZIP 10.80 MB Aug 5, 2016