DM5445/DM7445 BCD to Decimal Decoders/Drivers General Description Features These BCD-to-decimal decoders/drivers consist of eight inverters and ten, four-input NAND gates. The inverters are connected in pairs to make BCD input data available for decoding by the NAND gates. Full decoding of BCD input logic ensures that all outputs remain off for all invalid (10 – 15) binary input conditions. These decoders feature high-performance, NPN output transistors designed for use as indicator/relay drivers, or as open-collector logic-circuit drivers. The high-breakdown output transistors are compatible for interfacing with most MOS integrated circuits. Y Connection Diagram Function Table Y Y Full decoding of input logic 80 mA sink-current capability All outputs are off for invalid BCD input conditions Inputs No. Dual-In-Line Package TL/F/6517 – 1 Order Number DM5445J, DM5445W or DM7445N See NS Package Number J16A, N16E or W16A Outputs D C B A 0 1 2 3 0 1 2 3 4 L L L L L L L L L H L L H H L L H L H L L H H H H H L H H H H H H H H H H H H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H 4 5 5 6 7 8 9 L L L H H H H H L L L H H L L H L H L H H H H H H H H H H H I N V A L I D H H H H H H L H L H L H H H H L L H H L H H H H L H H H H H H H H L H H H H H H H H H H H H H H H H 6 7 8 9 H H H H L H H H H L H H H H L H H H H L H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H H e High Level (Off), L e Low Level (On) C1995 National Semiconductor Corporation TL/F/6517 RRD-B30M105/Printed in U. S. A. DM5445/DM7445 BCD to Decimal Decoders/Drivers June 1989 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 5.5V Output Voltage 30V Operating Free Air Temperature Range b 55§ C to a 125§ C DM54 DM74 0§ C to a 70§ C b 65§ C to a 150§ C Storage Temperature Range Recommended Operating Conditions Symbol DM5445 Parameter DM7445 Units Min Nom Max Min Nom Max 4.5 5 5.5 4.75 5 5.25 VCC Supply Voltage VIH High Level Input Voltage VIL Low Level Input Voltage 0.8 0.8 VOH High Level Output Voltage 30 30 V IOL Low Level Output Current 20 20 mA TA Free Air Operating Temperature 70 §C 2 V 2 b 55 125 V 0 V Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Typ (Note 1) Min Max Units b 1.5 V 250 mA VI Input Clamp Voltage VCC e Min, II e b12 mA ICEX High Level Output Current VCC e Min, VO e 30V VIL e Max, VIH e Min VOL Low Level Output Voltage VCC e Min, IOL e Max VIH e Min, VIL e Max 0.2 0.4 IOL e 80 mA VCC e Min 0.5 0.9 II Input Current @ Max Input Voltage VCC e Max, VI e 5.5V IIH High Level Input Current IIL ICC 1 mA VCC e Max, VI e 2.4V 40 mA Low Level Input Current VCC e Max, VI e 0.4V b 1.6 mA Supply Current VCC e Max (Note 2) Switching Characteristics Symbol V DM54 43 62 DM74 43 70 mA at VCC e 5V and TA e 25§ C (See Section 1 for Test Waveforms and Output Load) Parameter Conditions tPLH Propagation Delay Time Low to High Level Output CL e 15 pF RL e 100X tPHL Propagation Delay Time High to Low Level Output Note 1: All typicals are at VCC e 5V, TA e 25§ C. Note 2: ICC is measured with all inputs grounded and all outputs open. 2 Min Max Units 49.5 ns 49.5 ns Logic Diagram TL/F/6517 – 2 Physical Dimensions inches (millimeters) 16-Lead Ceramic Dual-In-Line Package (J) Order Number DM5445J NS Package Number J16A 3 DM5445/DM7445 BCD to Decimal Decoders/Drivers Physical Dimensions inches (millimeters) (Continued) 16-Lead Molded Dual-In-Line Package (N) Order Number DM7445N NS Package Number N16E LIFE SUPPORT POLICY 16-Lead Ceramic Flat Package (W) Order Number DM5445W NS Package Number W16A 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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