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DM74LS47M bảng dữ liệu(PDF) 1 Page - Fairchild Semiconductor |
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1 / 8 page DM74LS47 BCD to 7-Segment Decoder/Driver with Open-Collector Outputs General Description The ’LS47 accepts four lines of BCD (8421) input data, gen- erates their complements internally and decodes the data with seven AND/OR gates having open-collector outputs to drive indicator segments directly. Each segment output is guaranteed to sink 24 mA in the ON (LOW) state and with- stand 15V in the OFF (HIGH) state with a maximum leakage current of 250 µA. Auxiliary inputs provided blanking, lamp test and cascadable zero-suppression functions. Features n Open-collector outputs n Drive indicator segments directly n Cascadable zero-suppression capability n Lamp test input Connection Diagram Pin Names Description A0–A3 BCD Inputs RBI Ripple Blanking Input (Active LOW) LT Lamp Test Input (Active LOW) BI/RBO Blanking Input (Active LOW) or Ripple Blanking Output (Active LOW) a–g *Segment Outputs (Active LOW) Note 1: *OC—Open Collector Dual-In-Line Package DS009817-1 Order Number DM54LS47J, DM54LS47W, DM74LS47M or DM74LS47N See Package Number J16A, M16A, N16E or W16A March 1998 © 1998 Fairchild Semiconductor Corporation DS009817 www.fairchildsemi.com |
Số phần tương tự - DM74LS47M |
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Mô tả tương tự - DM74LS47M |
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