ITA6V5B1 / ITA10B1 ITA18B1 / ITA25B1 ® Application Specific Discretes A.S.D.TM BIDIRECTIONAL TRANSILTM ARRAY FOR DATALINE PROTECTION APPLICATIONS Differential data transmission lines protection : - RS-232 - RS-423 - RS-422 - RS-485 SO-8 FEATURES ■ ■ ■ ■ ■ ■ 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. I/O1 1 8 GND I/O 2 2 7 I/O 3 3 6 I/O 4 4 5 GND 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) August 2001- Ed: 2 1/5 ITA6V5B1 / ITA10B1 / ITA18B1 / ITA25B1 ABSOLUTE MAXIMUM RATINGS (Tamb = 25°C) Symbol Parameter Value Unit PPP Peak pulse power dissipation (8/20µs) (see note 1) Tj initial = Tamb 300 W IPP Peak pulse current (8/20µs) (see note 1) Tj initial = Tamb 40 A I 2t Wire I2t value (see note 1) 0.6 A2s - 55 to + 150 125 °C °C 260 °C Tstg Tj Storage temperature range Maximum operating junction temperature TL Maximum lead temperature for soldering during 10s %I pp 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. 8 s 100 Pulse wave form 8/20 s 50 0 t 20 s ELECTRICAL CHARACTERISTICS (Tamb = 25°C) Symbol Parameter VRM Stand-off voltage VBR Breakdown voltage VCL Clamping voltage IRM Leakage current @ VRM IPP Peak pulse current αT Voltage temperature coefficient C Types Junction capacitance IRM @ VRM max. VBR @ IR VCL min. note 2 @ IPP VCL 8/20µs max. note 2 @ IPP αT C 8/20µs max. max. -4 note 2 note 3 µA V V mA V A V A 10 /°C pF ITA6V5B1 10 5 6.5 1 10 10 12 25 4 750 ITA10B1 4 8 10 1 15 10 19 25 8 570 ITA18B1 4 15 18 1 25 10 28 25 9 350 ITA25B1 4 24 25 1 33 10 38 25 12 300 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 Fig. 2 : Clamping voltage versus peak pulse current (exponential waveform 8/20 µs). P P P (W) T j initial = 25 o C ITA25B1 ITA18B1 ITA6V5B1 ITA10B1 1E+03 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 Fig. 4 : Junction capacitance versus reverse applied voltage for one input/output (typical values). I DC (A) exponential waveform 1E+02 1E+01 t (ms) 1E+00 1E-02 1E-01 1E+00 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 ITA6V5B1 + / - 3.5 V ITA10B1 + / - 5.0 V ITA18B1 + / - 9.0 V ITA25B1 + / - 12.5 V 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 25 B 1 RL Packaging: RL = Tape & reel = Tube Integrated Transil Array VBR min Package: SO-8 Plastic Bidirectional 4/5 ITA6V5B1 / ITA10B1 / ITA18B1 /ITA25B1 MARKING TYPE MARKING ITA6V5B1 6V5B1 ITA10B1 10B1 ITA18B1 18B1 ITA25B1 25B1 Packaging : Preferred packaging is tape and reel. Weight : 0.08g. PACKAGE MECHANICAL DATA SO-8 (Plastic) DIMENSIONS REF. Millimetres Min. Typ. Max. A a1 Inches 0.1 a2 Min. Typ. Max. 1.75 0.069 0.25 0.004 0.010 1.65 0.065 b 0.35 0.48 0.014 0.019 b1 0.19 0.25 0.007 0.010 C 0.50 c1 0.020 45° (typ) D 4.8 5.0 0.189 0.197 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 3.81 0.150 F 3.8 4.0 0.15 0.157 L 0.4 1.27 0.016 0.050 0.6 0.024 M S 8° (max) 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. 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