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CLC014 数据表(PDF) 11 Page - National Semiconductor (TI) |
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CLC014 数据表(HTML) 11 Page - National Semiconductor (TI) |
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11 / 17 page ![]() Design Guidelines (Continued) MINIMUM DATA TRANSITIONS The CLC014 specifies a minimum transition rate. For the CLC014 this sets the minimum data rate for transmitting data through any cable medium. The CLC014 minimum average transition density is found in the Electrical Characteristics section of the datasheet. POWER SUPPLY OPERATION AND THERMAL CONSIDERATIONS The CLC014 operates from either +5V or −5.2V single sup- plies. Refer to Figure 1 when operating the part from +5V. When operating with a −5.2V supply, the V EE pins should be bypassed to ground. The evaluation board and associated literature provide for operation from either supply. Maximum power dissipation occurs at minimum cable length. Under that condition, I CC =58mA. Total power dissipated: P T = (58 mA)(5V) = 290 mW Power in the load: P L = (0.7V)(11 mA) + (37.5)(11 mA) 2 =12mW Maximum power dissipated on the die: P DMAX =PT–PL = 278 mW Junction Temperature = ( θ JA)(278 mW) + TA =T A + 26˚C www.national.com 11 |
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