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74247

Part Number	74247
Manufacturer	National Semiconductor
Description	BCD to 7-Segment Decoder/Driver
Published	May 31, 2016
Detailed Description	DM74LS247 BCD to 7-Segment Decoder Driver with Open-Collector Outputs DM74LS247 BCD to 7-Segment Decoder Driver with Op...
Datasheet	74247 PDF File

Overview

DM74LS247 BCD to 7-Segment Decoder Driver with Open-Collector Outputs DM74LS247 BCD to 7-Segment Decoder Driver with Open-Collector Outputs General Description The ’LS247 has active LOW open-collector outputs guaranteed to sink 24 mA It has the same electrial characteristics and pin connections as the ’LS47 The only difference is that the ’LS247 will light the top bar (segment a) for numeral 6 and the bottom bar (segment d) for number 9 For detailed description and specifications please refer to the ’LS47 data sheet Connection Diagram Logic Symbol Dual-In-Line Package May 1992 TL F 9822 – 1 Order Number DM74LS247M or DM74LS247N See NS Package Number M16A or N16E VCC e Pin 16 GND e Pin 8 Pin Names A0 – A3 RBI LT BI RBO a–g Description BCD Inputs Ripple Blanking Input (Active LOW) Lamp Test Input (Active LOW) Blanking Input (Avtive LOW) or Ripple Blanking Output (Active LOW) Segment Outputs (Active LOW) TL F 9822 – 2 C1995 National Semiconductor Corporation TL F 9822 RRD-B30M115 Printed in U S A Absolute Maximum Ratings (Note) Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range 0 C to a70 C Storage Temperature Range b65 C to a150 C Recommended Operating Conditions Symbol VCC VIH VIL IOH IOL TA Parameter Supply Voltage High Level Input Voltage Low Level Input Voltage High Level Output Current BI RBO Low Level Output Current Free Air Operating Temperature Note 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 Min Nom Max Units 4 75 5 5 25 V 2V 08 V b50 mA 24 mA 0 70 C Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Param...

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