DM54LS447/DM74LS447 BCD to 7-Segment Decoder/Driver with Open-Collector Outputs General Description The ’LS447 is the same as the ’LS247 except that the Output OFF Voltage, VOH is specified as 7.0V rather than 15V, with the same IOH limit of 250 mA. For all other information please refer to the ’LS247 data sheet. Connection Diagram Dual-In-Line Package TL/F/10187 – 1 Order Number DM54LS447J, DM54LS447W, DM74LS447M or DM74LS447N See NS Package Number J16A, M16A, N16E or W16A C1995 National Semiconductor Corporation TL/F/10187 RRD-B30M105/Printed in U. S. A. DM54LS447/DM74LS447 BCD to 7-Segment Decoder/Driver with Open-Collector Outputs May 1992 Absolute Maximum Ratings (Note) 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. If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range b 55§ C to a 125§ C DM54LS DM74LS 0§ C to a 70§ C b 65§ C to a 150§ C Storage Temperature Range Recommended Operating Conditions Symbol DM54LS447 Parameter VCC Supply Voltage VIH High Level Input Voltage VIL Low Level Input Voltage IOH High Level Output Current (BI/RBO) IOL Low Level Output Current TA Free Air Operating Temperature DM74LS447 Units Min Nom Max Min Nom Max 4.5 5 5.5 4.75 5 5.25 2 V 2 V 0.7 0.8 V b 50 b 50 mA 24 mA 70 §C 12 b 55 125 0 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions VI Input Clamp Voltage VCC e Min, II e b18 mA VOH High Level Output Voltage VCC e Min, IOH e Max, VIL e Max (BI/RBO) Min DM54 2.4 DM74 2.4 Typ (Note 1) Max Units b 1.5 V V 3.4 IOFF High Level Output Current Segment Outputs, VO e 7.0V (a–g) 250 VOL Low Level Output Voltage VCC Min, IOL e Max, VIH e Min DM54 0.4 DM74 0.35 0.5 IOL e 12 mA, VCC e Min DM74 0.25 0.4 II Input Current @ Max Input Voltage VCC e Max, VI e 7V VI e 10V (DM54) IIH High Level Input Current Low Level Input Current IIL IOS ICC V 0.1 mA VCC e Max, VI e 2.7V 20 mA VCC e Max, VI e 0.4V Others b 0.4 mA BI/RBO Inputs b 1.2 mA Short Circuit Output Current VCC e Max (Note 2) Supply Current VCC e Max DM54 b 0.3 b 2.0 DM74 b 0.3 b 2.0 13 Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second. Switching Characteristics at VCC e 5V, TA e 25§ C RL e 2 kX, CL e 15 pF Parameter Min tPLH tPHL Propagation Delay 2 Units Max 100 100 mA mA Note 1: All typicals are at VCC e 5V, TA e 25§ C. Symbol mA ns Logic Symbol State Diagram TL/F/10187 – 3 TL/F/10187–2 VCC e Pin 16 GND e Pin 8 3 Physical Dimensions inches (millimeters) 16-Lead Ceramic Dual-In-Line Package (J) Order Number DM54LS447J NS Package Number J16A 4 Physical Dimensions inches (millimeters) (Continued) 16-Lead Small Outline Molded Package (M) Order Number DM74LS447M NS Package Number M16A 16-Lead Molded Dual-In-Line Package (N) Order Number DM74LS447N NS Package Number N16E 5 DM54LS447/DM74LS447 BCD to 7-Segment Decoder/Driver with Open-Collector Outputs Physical Dimensions inches (millimeters) (Continued) 16-Lead Ceramic Flat Package (W) Order Number DM54LS447W NS Package Number W16A LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. 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