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MC145583VF Arkusz danych(PDF) 6 Page - Motorola, Inc |
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MC145583VF Arkusz danych(HTML) 6 Page - Motorola, Inc |
6 / 8 page MC145583 MOTOROLA 6 ESD PROTECTION ESD protection on IC devices that have their pins acces- sible to the outside world is essential. High static voltages applied to the pins when someone touches them either directly or indirectly can cause damage to gate oxides and transistor junctions by coupling a portion of the energy from the I/O pin to the power supply buses of the IC. This coupling will usually occur through the internal ESD protection diodes which are designed to do just that. The key to protecting the IC is to shunt as much of the energy to ground as possible before it enters the IC. Figure 1 shows a technique which will clamp the ESD voltage at approximately ± 15 V using the MMBZ15VDLT1. Any residual voltage which appears on the supply pins is shunted to ground through the capacitors C1 and C2. VSS STB Rx1 Rx2 Rx3 Tx1 Rx4 Tx2 Rx5 Tx3 C5– RIMON C5+ GND MMBZ15VDLT1 x 8 C1– VDD C2– C1+ C2+ VCC DO4 DI2 DO3 DI1 DO1 DO2 DO5 DI3 0.1 µF C2 C1 0.1 µF Figure 1. ESD Protection Scheme |
Podobny numer części - MC145583VF |
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Podobny opis - MC145583VF |
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