DALC112S1 Application Specific Discretes A.S.D.TM LOW CAPACITANCE DIODE ARRAY FOR ESD PROTECTION MAIN APPLICATIONS Where ESD protection for high speed datalines is required : LAN / WAN equipment Computer I/O Graphic video port Set top box I/O SO8 DESCRIPTION ARRAY of 12 diodes configured by cells of 2 diodes, each cell being used to protect signal line from transient overvoltages by clamping action. Its very low capacitance allows to protect fast signals with no distortion. It is particularlysuited for the protection of graphic video ports. FUNCTIONAL DIAGRAM FEATURES ARRAYOF 12 DIODESFOR ESDPROTECTION. PEAK REVERSE VOLTAGE VRRM= 18V PER DIODE. VERYLOWCAPACITANCE PERDIODE: C <5pF. VERY LOW LEAKAGE CURRENT : IR < 2 µA. I/O 1 REF 1 I/O 2 I/O 6 I/O 3 REF 2 COMPLIESWITHTHE FOLLOWINGSTANDARDS : IEC1000-4-2level 3 January 1998 - Ed: 4 8 kV (air discharge) 6 kV (contactdischarge) I/O 4 I/O 5 1/3 DALC112S1 TYPICAL APPLICATION Vcc DALC112S1 ABSOLUTE MAXIMUM RATINGS (Tamb =25°C). Symbol Parameter Value Unit VRRM Peak reverse voltage per diode 18 V Tstg Tj Storage temperature range Maximum junction temperature -55 to + 150 150 °C °C ELECTRICAL CHARACTERISTICS (Tamb = 25°C). Symbol Parameter Typ. Max. Unit VF Forward voltage IF = 50 mA 1.3 V IR Reverse leakage current per diode VR = 15 V 2 µA C Input capacitance between Line and GND Vcc = 5 V, VRMS = 30 mV, F = 1 MHz (see figure 1 below) 7 Fig 1 : Input capacitance measurement REF2 I/O VCC G REF1 2/3 +VCC connected between REF1 and REF2 Input applied : Vcc = 5V, VRMS = 30 mV, F = 1 MHz pF DALC112S1 ORDER CODE DALC 1 12 S 1 RL RL = tape& reel (2500 pcs). = tube (100 pcs). Diode Array Low Capacitance Version SO8 Package Nb. of Diodes MARKING Type DALC112S1 Marking DALC12 Order Code Packaging (Base Qty) DALC112S1 DALC112S1RL PACKAGE MECHANICAL DATA SO8 (Plastic) tube (100) tape & reel (2500) REF. A DIMENSIONS Millimetres Inches Min. Typ. Max. Min. Typ. Max. 1.75 0.069 a1 0.1 0.25 a2 b 0.35 b1 0.19 C c1 D E 0.004 0.010 1.65 0.48 0.014 0.065 0.019 0.25 0.007 0.50 0.010 0.020 45° (typ) 4.8 5.8 e 5.0 6.2 0.189 0.228 1.27 0.197 0.244 0.050 e3 F 3.8 4.0 0.15 0.157 L 0.4 1.27 0.016 0.050 M S 3.81 0.150 0.6 8° (max) 0.024 PACKAGING : Preferred packaging is tape and reel. Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringementof patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all informationprevious ly supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. 1998 STMicroelectronics - Printed in Italy - All rights reserved. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 3/3