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ST1284 Fiches technique(PDF) 6 Page - STMicroelectronics |
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ST1284 Fiches technique(HTML) 6 Page - STMicroelectronics |
6 / 10 page Technical information ST1284 6/10 Doc ID 6976 Rev 4 3 Technical information 3.1 Frequency behavior of data and strobe signals 3.2 ESD protection In addition to the requirements of termination and EMC compatibility, computing devices are required to be tested for ESD susceptibility. This test is described in the IEC 61000-4-2 and is already in place in Europe. This test requires that a device tolerates ESD events and remain operational without user intervention. The ST1284-01A8 is particularly optimized to perform ESD protection. ESD protection is based on the use of device which clamps at: Vouput = VBR + Rd · IPP This protection function is split in 2 stages. As shown in Figure 7, the ESD strikes are clamped by the first stage S1 and then its remaining overvoltage is applied to the second stage through the resistor R. Such a configuration makes the voltage very low at the output. Figure 7. ST1284 ESD clamping behavior Figure 5. Measurement conditions Figure 6. Typical frequency response curve for data and STROBE signal ST1284 SPECTRUM ANALYSER TRACKING GENERATOR Vg Vout Vin 50 Ω 50 Ω +5V 1 3 10 30 100 300 1,000 -30.00 -25.00 -20.00 -15.00 -10.00 -5.00 0.00 dB F (MHz) ESD Surge Vinput Voutput Rload Rg R S1 Rd V BR V BR Device to be protected ST1284-xxA8 Rd S2 |
Numéro de pièce similaire - ST1284_12 |
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Description similaire - ST1284_12 |
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