STMicroelectronics ITA25B1
The ITA series combines high surge capability against energetic pulses with high voltage performance against ESD. 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.FEATURES
● High surge capability Transil array: IPP = 40 A (8/20 µs)● Peak pulse power: 300 W (8/20 µs)
● Up to 5 bidirectional Transil functions
● Low clamping factor (VCL / VBR) at high current level
● Low leakage current
● ESD protection up to 15 kV Complies with the following standards
● IEC 61000-4-2 level 4 – 15 kV (air discharge) – 8 kV (contact discharge)
● MIL STD 883G- Method 3015-7: class 3B – 25 kV (human body model)
APPLICATIONS
Differential data transmission line protection, such as:● RS-232
● RS-423
● RS-422
● RS-485
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. TM: Transil is a trademark of STMicroelectronics SO-8 Figure 1. Functional diagram I/O1 1 I/O2 2 I/O3 3 I/O4 4 8 GND 7 6 5 GND November 2007 Rev 2 1/7 7 Characteristics 1 Characteristics ITAxxB1 Table 1.