器件名称: CS212
功能描述: Security Detector Serial-Addressable Receiver/Transmitter
文件大小: 158.19KB 共8页
简 介:CS212
CS212
Security Detector Serial-Addressable Receiver/Transmitter
Description
The S-ART is a 16 pin circuit designed for data transmission on a two-lead cable. The circuit is specially developed for alarm systems where it is desired to identify each detector individually. There can be up to 30 S-ART circuits/detectors on the same 2-lead cable. This cable transmits both DC supply to the S-ART and information to/from the S-ART. The S-ART works on the principle by which an address is sent on the line cable and the S-ART which recognizes the address then carries out the order which can, in principle, be two things: 1. Transmit data from the line cable to the S-ART's two outputs OUT0 and OUT1. 2. Answer the S-ART controller with the condition of the 2 inputs IN0 and IN1 or IN2-3. The line signal is divided into 3 levels in order to give a time signal for synchronizing and a data signal containing addresses, orders etc. Typical signal levels for the three levels would be 15V, 7.5V and 0V.
Features
s Receives/Transmits Data on Only Two Leads s Low Current Consumption s High Noise Immunity s Sabotage Surveilled Loop Input
Block Diagram
Package Options
16L PDIP & 16L SO Wide A method by which, in principle, the system can be extended to an infinite number of S-ART is shown on the block diagram. The controller scans the in/outputs of a number of lines, each with a maximum of 30 S-ARTs.
Line 1 S-ART
OUT0 1
Controller Line N
16 15 14 13 12 11 10 9
OUT1 DSR IN2 IN3 VDD DATAOUT ……
