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DM74LS47 bảng dữ liệu(PDF) 2 Page - Fairchild Semiconductor |
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DM74LS47 bảng dữ liệu(HTML) 2 Page - Fairchild Semiconductor |
2 / 8 page Absolute Maximum Ratings (Note 2) Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range DM54LS −55˚C to +125˚C DM74LS 0˚C to +70˚C Storage Temperature Range −65˚C to +150˚C Recommended Operating Conditions Symbol Parameter DM54LS47 DM74LS47 Units Min Nom Max Min Nom Max V CC Supply Voltage 4.5 5 5.5 4.75 5 5.25 V V IH High Level Input Voltage 2 2 V V IL Low Level Input Voltage 0.7 0.8 V I OH High Level Output Currenta−g −50 −250 µA @ 15V = V OH (Note 3) I OH High Level Output Current BI /RBO −50 µA I OL Low Level Output Current 12 24 mA T A Free Air Operating Temperature −55 125 0 70 ˚C Note 2: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the “Electrical Characteristics” table are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Note 3: OFF state at a–g. Electrical Characteristics Over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Min Typ Max Units (Note 4) V I Input Clamp Voltage V CC = Min, II = −18 mA −1.5 V V OH High Level V CC = Min, IOH = Max, DM54 2.4 V Output Voltage V IL = Max, BI /RBO DM74 2.7 3.4 I OFF Output High Current V CC = 5.5V, VO = 15Va−g 250 µA Segment Outputs V OL Low Level V CC = Min, IOL = Max, DM54 0.4 Output Voltage V IH = Min,a−g DM74 0.35 0.5 I OL = 3.2 mA, BI /RBO DM74 0.5 V I OL = 12 mA, a – g DM74 0.25 0.4 I OL = 1.6 mA, BI /RBO DM74 0.4 I I Input Current @ Max V CC = Max, VI = 7V DM74 100 µA Input Voltage V CC = Max, VI = 10V DM54 I IH High Level Input Current V CC = Max, VI = 2.7V 20 µA I IL Low Level Input Current V CC = Max, VI = 0.4V −0.4 mA I OS Short Circuit V CC = Max DM54 −0.3 −2.0 mA Output Current (Note 5) , I OS at BI/RBO DM74 −0.3 −2.0 I CC Supply Current V CC = Max 13 mA Note 4: All typicals are at VCC = 5V, TA = 25˚C. Note 5: Not more than one output should be shorted at a time, and the duration should not exceed one second. www.fairchildsemi.com 2 |
Số phần tương tự - DM74LS47_07 |
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Mô tả tương tự - DM74LS47_07 |
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