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HD74AC Datasheet(PDF) 20 Page - Hitachi Semiconductor |
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HD74AC Datasheet(HTML) 20 Page - Hitachi Semiconductor |
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20 / 52 page ![]() Definition of Specifications 19 2. Ratings and Specifications Table 1 Absolute Maximum Ratings *1 Parameter Symbol Limit Unit Condition Supply voltage V CC –0.5 to 7.0 V DC input Diode current or DC input voltage I IK –20 mA V I = –0.5 20 mA V I = VCC +0.5 V I –0.5 to V CC +0.5 V DC output Diode current or DC output voltage I OK –50 mA V O = –0.5 50 mA V O = VCC +0.5 V O –0.5 to V CC +0.5 V DC output source or sink current I O ±50 mA DC V CC or ground current per output pin I CC or IGND ±50 mA Storage temperature T STG –65 to 150 °C Note: 1. Absolute maximum ratings are those values beyond which damage to the device may occur. Obviously the databook specifications should be met, without exception to ensure that the system design is reliable over its power supply, temperature, output/input loading variables. Hitachi does not recommend operation of FACT circuits outside databook specifications. Table 2 Recommended Operating Conditions Parameter Symbol Limit Unit Condition Supply Voltage (unless otherwise specified) AC devices V CC 2.0 to 6.0 V ACT devices 4.5 to 5.5 Input voltage V I 0 to V CC V Output voltage V O 0 to V CC V Operating temperature T A –40 to +85 °C Input rise and Fall time* 1 (typical) tr, tf 150 ns/V V CC @ 3.0V (except Schmitt inputs) ’AC devices V IN from 40 ns/V V CC @ 4.5V 30% to 70% of V CC 25 ns/V V CC @ 5.5V Input rise and Fall time* 1 (typical) tr, tf 10 ns/V V CC @ 4.5V (except schmitt inputs) ’ACT devices V IN from 8 ns/V V CC @ 5.5V 0.8 to 2.0 V, V meas from 0.8 to 2.0V Note: 1. See individual data sheets for those devices which differ from the typical input rise and fall times noted here. |
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