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ESD8006 Fiches technique(PDF) 11 Page - ON Semiconductor |
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ESD8006 Fiches technique(HTML) 11 Page - ON Semiconductor |
11 / 12 page ESD8006 www.onsemi.com 11 Latch-Up Considerations ON Semiconductor’s 8000 series of ESD protection devices utilize a snap-back, SCR type structure. By using this technology, the potential for a latch-up condition was taken into account by performing load line analysis of common high speed serial interfaces. Example load lines for latch-up free applications and applications with the potential for latch-up are shown below with a generic IV characteristic of a snapback, SCR type structured device overlaid on each. In the latch-up free load line case, the IV characteristic of the snapback protection device intersects the load-line in one unique point (VOP, IOP). This is the only stable operating point of the circuit and the system is therefore latch-up free. Please note that for USB 3.0 applications, ESD8006 latch-up free considerations are explained in more detail in the above PCB layout guidelines. In the non-latch up free load line case, the IV characteristic of the snapback protection device intersects the load-line in two points (VOPA, IOPA) and (VOPB, IOPB). Therefore in this case, the potential for latch-up exists if the system settles at (VOPB, IOPB) after a transient. Because of this, ESD8006 should not be used for HDMI applications – ESD8104 or ESD8040 have been designed to be acceptable for HDMI applications without latch-up. Please refer to Application Note AND9116/D for a more in-depth explanation of latch-up considerations using ESD8000 series devices. Figure 20. Example Load Lines for Latch-up Free Applications and Applications with the Potential for Latch-up I V VDD ISSMAX IOP VOP I V VDD ISSMAX IOPA VOPA IOPB VOPB ESD8006 Latch−up free: USB 2.0 LS/FS, USB 2.0 HS, USB 3.0/3.1 SS, DisplayPort ESD8006 Potential Latch−up: HDMI 2.0/1.4/1.3a TMDS Table 1. SUMMARY OF SCR REQUIREMENTS FOR LATCH-UP FREE APPLICATIONS Application VBR (min) (V) IH (min) (mA) VH (min) (V) ON Semiconductor ESD8000 Series Recommended PN HDMI 2.0/1.4/1.3a TMDS 3.465 54.78 1.0 ESD8104, ESD8040 USB 2.0 LS/FS 3.301 1.76 1.0 ESD8004 USB 2.0 HS 0.482 N/A 1.0 ESD8004 USB 3.0/3.1 SS 2.800 N/A 1.0 ESD8004, ESD8006 DisplayPort 3.600 25.00 1.0 ESD8004, ESD8006 |
Numéro de pièce similaire - ESD8006 |
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Description similaire - ESD8006 |
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