18B1

® ITA6V5B1 / ITA10B1 ITA18B1 / ITA25B1 BIDIRECTIONAL TRANSILTM ARRAY FOR DATALINE PROTECTION Application Specific Discretes A.S.D.TM APPLICATIONS Differential data transmission lines protection : - RS-232 - RS-423 - RS-422 - RS-485 FEATURES s SO-8 s s s s s HIGH SURGE CAPABILITY TRANSIL ARRAY IPP = 40 A (8/20µs) PEAK PULSE POWER : 300 W (8/20µs) UP TO 5 BIDIRECTIONAL TRANSIL FUNCTIONS LOW CLAMPING FACTOR (VCL / VBR) AT HIGH CURRENT LEVEL LOW LEAKAGE CURRENT ESD PROTECTION UP TO 15kV FUNCTIONAL DIAGRAM DESCRIPTION Transil diode arrays provide high overvoltage protection by clamping action. Their instantaneous response to transient overvoltages makes them particularly suited to protect voltage sensitive devices such as MOS Technology and low voltage supplied IC’s. The ITA series allies high surge capability against energetic pulses with high voltage performance against ESD. COMPLIES WITH THE FOLLOWING STANDARDS : IEC 1000-4-2 : level 4 IEC 1000-4-4 : level 4 IEC 1000-4-5 : level 2 MIL STD 883C - Method 3015-6 : class 3 (human body model) I/O1 I/O 2 I/O 3 I/O 4 1 2 3 4 8 GND 7 6 5 GND August 2001- Ed: 2 1/5 ITA6V5B1 / ITA10B1 / ITA18B1 / ITA25B1 ABSOLUTE MAXIMUM RATINGS (Tamb = 25°C) Symbol PPP IPP I 2t Tstg Tj TL Parameter Peak pulse power dissipation (8/20µs) (see note 1) Peak pulse current (8/20µs) (see note 1) Wire I2t value (see note 1) Storage temperature range Maximum operating junction temperature Maximum lead temperature for soldering during 10s %I pp 100 8s Value Tj initial = Tamb Tj initial = Tamb 300 40 0.6 - 55 to + 150 125 260 Unit W A A2s °C °C °C Note 1 : For surges greater than the specified maximum value, the I/O will first present a short-circuit and after an open circuit caused by the wire melting. Pulse wave form 8/20 s 50 0 20 s t ELECTRICAL CHARACTERISTICS (Tamb = 25°C) Symbol VRM VBR VCL IRM IPP Parameter Stand-off voltage Breakdown voltage Clamping voltage Leakage current @ VRM Peak pulse current Voltage temperature coefficient Junction capacitance αT C Types IRM max. @ VRM VBR min. note 2 @ IR VCL @ IPP 8/20µs VCL max. note 2 @ IPP 8/20µs αT max. C max. note 3 note 2 mA 1 1 1 1 V 10 15 25 33 A 10 10 10 10 µA V 5 8 15 24 V 6.5 10 18 25 V 12 19 28 38 A 25 25 25 25 10 /°C 4 8 9 12 -4 pF 750 570 350 300 ITA6V5B1 ITA10B1 ITA18B1 ITA25B1 10 4 4 4 Note 2 : Between I/O pin and ground. Note 3 : Between two input Pins at 0V Bias, F = 1 MHz. Preferred types in bold 2/5 ITA6V5B1 / ITA10B1 / ITA18B1 /ITA25B1 Fig. 1 : Typical peak pulse power versus exponential pulse duration. 1E+04 P P P (W) T j initial = 25 o C ITA25B1 ITA18B1 Fig. 2 : Clamping voltage versus peak pulse current (exponential waveform 8/20 µs). 1E+03 ITA6V5B1 ITA10B1 1E+02 1E+01 1E-03 1E-02 1E-01 t P (ms) expo 1E+00 1E+01 1E+02 Fig. 3 : Peak current IDC inducing open circuit of the wire for one input/output versus pulse duration (typical values). 1E+03 I DC (A) exponential waveform Fig. 4 : Junction capacitance versus reverse applied voltage for one input/output (typical values). 1E+02 1E+01 1E+00 1E-02 1E-01 1E+00 t (ms) 1E+01 Fig. 5 : Relative variation of leakage current versus junction temperature 3/5 ITA6V5B1 / ITA10B1 / ITA18B1 / ITA25B1 APPLICATION INFORMATION Types Maximum differential voltage between two input pins at 25°C + / - 3.5 V + / - 5.0 V + / - 9.0 V + / - 12.5 V ITA6V5B1 ITA10B1 ITA18B1 ITA25B1 This monolithic Transil Array is based on 6 unidirectional Transils with a common cathode and can be configurated to offer up to 5 bidirectional functions. This imposes a maximum differential voltage between 2 input pins (see opposite table). Typical application : RS232 junction. TX RX RTS CTS GND ORDER CODE ITA Integrated Transil Array VBR min 25 B 1 RL Packaging: RL = Tape & reel = Tube Package: SO-8 Plastic Bidirectional 4/5 ITA6V5B1 / ITA10B1 / ITA18B1 /ITA25B1 MARKING TYPE ITA6V5B1 ITA10B1 ITA18B1 ITA25B1 MARKING 6V5B1 10B1 18B1 25B1 Packaging : Preferred packaging is tape and reel. Weight : 0.08g. PACKAGE MECHANICAL DATA SO-8 (Plastic) DIMENSIONS REF. A a1 a2 b b1 C c1 D E e e3 F L M S 3.8 0.4 4.8 5.8 1.27 3.81 4.0 0.6 8° (max) 0.15 1.27 0.016 0.35 0.19 0.50 45° (typ) 5.0 6.2 0.189 0.228 0.050 0.150 0.157 0.050 0.024 0.197 0.244 0.1 Millimetres Min. Typ. Max. 1.75 0.25 0.004 1.65 0.48 0.014 0.25 0.007 0.020 Min. Inches Typ. Max. 0.069 0.010 0.065 0.019 0.010 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 infringement of 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 information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics © 2001 STMicroelectronics - Printed in Italy - All rights reserved. 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