The iC-VRV is a 2x4 24 V Low-Side Driver with I/O Function and ìC Interface.
     The device serves as a dual quad low-side driver as a bidirectional µP interface with digital filtering for industrial 24 V applications.
 
  2 × 4 bidirectional input/output stages at 24 V
  Input/output mode programmable for each 4 bits
  Guaranteed low-side driving capability of 100 mAdc and
500 mApeak for pulse load
  Short-circuit-proof driver with high electric strength
up to 48 V
  Low saturation voltage of 0.4 V at 10 mA and
1.5 V at 500 mA
  Programmable pull-down current sources
  Built-in free-wheeling diodes with externally accessible
common cathode
  Flashing function for the outputs
  Programmable digital input filters with externally adjusted
filtering times
  Bus capability via high-speed microprocessor interface
  Programmable interrupt output
  Shutdown at overtemperature and low voltage
 
 
iC-VRV is an 8-fold low-side driver with integrated control logic which is divided internally into two mutually
independent blocks (nibbles).
In the input mode, ports IO0 to IO7 can be used to record logical levels. In this process, a programmable
pull-down current (200 μA or 2 mA) sets a defined level and functions as the biasing current for switching
contacts. The stages programmed as outputs can drive any desired loads (e. g. lamps, long cables, relays)
at a continuous current of 100 mA or 500 mA in pulse operation. The free-wheeling currents created upon
each stage turn-off are discharged through the integrated free-wheeling diodes to a voltage applied externally
to the COM pin; a circuit with a Zener diode is also possible.
In the event of a short circuit, a protective circuit breaker ensures that the output stage affected does not just
simply switch off but is instead clocked as a function of the load. As a result, the current assumes a low
average value. The output stage is ready for operation immediately just as soon as the cause of the short
circuit has been eliminated.
The shutdown at overtemperature protects the IC against thermal destruction by causing the output stages
to turn off and the pull-down currents to be reduced from 2 mA to 200 μA. This shutdown is also triggered in
case of undervoltage at VCC.Due to the microprocessor interface the iC-VRV can be operated directly on a bus system. The interface
consists of the data bits D0 to D7 and the associated control signals A0, A1, CSN, WRN and RDN. The signal
CLK clocks the implemented digital input filter and BLFQ clocks the programmed flashing function. In the
event of a signal change of the I/O pins programmed as inputs, an interrupt signal can be generated at output
INTN.
Activating the input RESN resets the initial condition.
Chip programming is conducted via four addresses at A0 and A1. During this programming, presettings for
flashing frequencies, filtering times, interrupt control, pull-down currents and input/output mode, etc. are stored
in two registers (CONTROL WORD1+2).
All inputs and outputs are protected with diodes against destruction due to ESD.
 
 

批號 : 1432+ ;
封裝 : PLCC44 ;
用途 : 儀器 ;
型號 : IC-VRV ;
品牌 : IC-HAUS ;
類型 : 處理器 ;

深圳科華誠科技有限公司（簡稱“科華誠”）成立于2001年，是國內著名的IC混合型（授權與非授權）電子元器件和技術開發，技術咨詢、信息服務等為一體的高科技企業，提供并可全系列訂購NXP、HITTITE、RFMD、ADI、ASI、TriQuint、mini-circuits的產品涉及存儲、運放、微波射頻器件、部件、子系統、儀器和設備，產品涵蓋安防、通訊、醫療、汽車電子、智能家居、電力、電源、光端機、照明、儀表、消費類數碼產品等領域。同時也為客戶的產品設計提供技術咨詢、綜合解決方案等相關技術服務。 科華誠創造中國電子神話，并于香港，深圳兩地均備有大量原裝現貨。公司堅持“品質第一、現貨經營、薄利多銷、服務至上”的經銷理念，向客戶提供全方位的優質服務。
經過長期的不懈努力，并以優惠的價格，可靠的品質，真誠的服務，樹立了良好的信譽，在同行中脫穎而出，贏得了廣大客商的信賴、支持、好評和青睞，與客戶攜手共贏。
品牌名稱 : NXP.ASI. iC-Haus.TriQuin.RFMD
代理級別 : 省級代理