Moteur de recherche de fiches techniques de composants électroniques |
|
TS68020DESC02YC Fiches technique(PDF) 8 Page - ATMEL Corporation |
|
TS68020DESC02YC Fiches technique(HTML) 8 Page - ATMEL Corporation |
8 / 45 page 8 TS68020 2115A–HIREL–07/02 This device contains protective circuitry against damage due to high static voltages or electrical fields; however, it is advised that normal precautions be taken to avoid applica- tion of any voltages higher than maximum-rated voltages to this high-impedance circuit. Reliability of operation is enhanced if unused inputs are tied to an appropriate logic volt- age level (e.g., either GND or VCC). Figure 5. Clock Input Timing Diagram Note: Timing measurements are referenced to and from a low voltage of 0.8V and a high volt- age of 2.0V, unless otherwise noted. The voltage swing through this range should start outside and pass through the range such that the rise or fall will be linear between 0.8V and 2.0V. Power Considerations The average chip-junction temperature, T J, in °C can be obtained from: T J =TA +(PD · θ JA)(1) T A = Ambient Temperature, °C θ JA = Package Thermal Resistance, Junction-to-Ambient, °C/W P D =PINT +PI/O P INT =ICC ·VCC, Watts — Chip Internal Power P I/O = Power Dissipation on Input and Output Pins — User Determined For most applications P I/O <PINT and can be neglected. An approximate relationship between P D and TJ (if PI/O is neglected) is: P D =K +(TJ + 273) (2) Solving equations (1) and (2) for K gives: K= P D ·(TA +273) + θJA ·PD 2 (3) where K is a constant pertaining to the particular part K can be determined from equa- tion (3) by measuring P D (at equilibrium) for a known TA. Using this value of K, the values of P D and TJ can be obtained by solving equations (1) and (2) iterativley for any value of T A. Table 4. Thermal Characteristics at 25 °C Package Symbol Parameter Value Unit PGA 114 θ JA Thermal Resistance - Ceramic Junction to Ambient 26 °C/W θ JC Thermal Resistance - Ceramic Junction to Case 5 °C/W CQFP 132 θ JA Thermal Resistance - Ceramic Junction to Ambient 34 °C/W θ JC Thermal Resistance - Ceramic Junction to Case 2 °C/W |
Numéro de pièce similaire - TS68020DESC02YC |
|
Description similaire - TS68020DESC02YC |
|
|
Lien URL |
Politique de confidentialité |
ALLDATASHEET.FR |
ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |