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74VHC221A 数据表(PDF) 5 Page - Fairchild Semiconductor |
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74VHC221A 数据表(HTML) 5 Page - Fairchild Semiconductor |
5 / 12 page ©1994 Fairchild Semiconductor Corporation www.fairchildsemi.com 74VHC221A Rev. 1.2 5 Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Recommended Operating Conditions(1) The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to absolute maximum ratings. Notes: 1. Unused inputs must be held HIGH or LOW. They may not float. 2. The maximum allowable values of Cx and Rx are a function of the leakage of capacitor Cx, the leakage of the device, and leakage due to board layout and surface resistance. Susceptibility to externally induced noise signals may occur for Rx > 1 MΩ. Symbol Parameter Rating VCC Supply Voltage –0.5V to +7.0V VIN DC Input Voltage –0.5V to +7.0V VOUT DC Output Voltage –0.5V to VCC + 0.5V IIK Input Diode Current –20mA IOK Output Diode Current ±20mA IOUT DC Output Current ±25mA ICC DC VCC / GND Current ±50mA TSTG Storage Temperature –65°C to +150°C TL Lead Temperature (Soldering, 10 seconds) 260°C Symbol Parameter Rating VCC Supply Voltage 2.0V to +5.5V VIN Input Voltage 0V to +5.5V VOUT Output Voltage 0V to VCC TOPR Operating Temperature –40°C to +85°C tr, tf Input Rise and Fall Time (CLR only) VCC = 3.3V ± 0.3V VCC = 5.0V ± 0.5V 0ns/V ∼ 100ns/V 0ns/V ∼ 20ns/V External Capacitor, Cx No Limitation(2) F External Resistor, Rx >5kΩ(2) (V CC = 2.0V) >1kΩ(2) (V CC > 3.0V) |
类似零件编号 - 74VHC221A_07 |
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类似说明 - 74VHC221A_07 |
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