5442A/DM5442A/DM7442A BCD to Decimal Decoders General Description Features These BCD-to-decimal decoders 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 input logic ensures that all outputs remain off for all invalid (10–15) input conditions. Y Y Y Y Y Y Diode clamped inputs Also for application as 4-line-to-16-line decoders; 3-lineto-8-line decoders All outputs are high for invalid input conditions Typical power dissipation 140 mW Typical propagation delay 17 ns Alternate Military/Aerospace device (5442A) is available. Contact a National Semiconductor Sales Office/ Distributor for specifications. Connection Diagram Dual-In-Line Package TL/F/6516 – 1 Order Number 5442ADMQB, 5442AFMQB, DM5442AJ, DM5442AW or DM7442AN See NS Package Number J16A, N16E or W16A Function Table BCD Input No. Decimal Output D C B A 0 1 2 3 4 5 6 7 8 9 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 L H H H H H 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 H H H H H H 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 H H H H H H H H H H H H H H H L H H H H H L H H H H H L H H H H H L H H H H H L I N V A L I D H H H H H H L L H H H H H H L L H H L H L 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 H H H H H H H e High Level L e Low Level C1995 National Semiconductor Corporation TL/F/6516 RRD-B30M105/Printed in U. S. A. 5442A/DM5442A/DM7442A BCD to Decimal Decoders 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 Operating Free Air Temperature Range b 55§ C to a 125§ C DM54 and 54 DM74 0§ C to a 70§ C Storage Temperature Range b 65§ C to a 150§ C Recommended Operating Conditions Symbol DM5442A Parameter DM7442A Units Min Nom Max Min Nom Max 4.5 5 5.5 4.75 5 5.25 V 0.8 0.8 V VCC Supply Voltage VIH High Level Input Voltage VIL Low Level Input Voltage IOH High Level Output Current b 0.8 b 0.8 mA IOL Low Level Output Current 16 16 mA TA Free Air Operating Temperature 70 §C 2 2 b 55 125 V 0 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions Min Typ (Note 1) Max Units b 1.5 V VI Input Clamp Voltage VOH High Level Output Voltage VCC e Min, II e b12 mA VCC e Min, IOH e Max VIL e Max, VIH e Min VOL Low Level Output Voltage VCC e Min, IOL e Max VIH e Min, VIL e Max II Input Current @ Max Input Voltage VCC e Max, VI e 5.5V IIH High Level Input Current VCC e Max, VI e 2.4V 40 mA IIL Low Level Input Current VCC e Max, VI e 0.4V b 1.6 mA IOS Short Circuit Output Current VCC e Max (Note 2) DM54 b 20 b 55 DM74 b 18 b 55 Supply Current VCC e Max (Note 3) DM54 28 41 DM74 28 56 ICC Note 1: All typicals are at VCC e 5V, TA e 25§ C. Note 2: Not more than one output should be shorted at a time. Note 3: ICC is measured with all outputs open and all inputs grounded. 2 2.4 3.4 0.2 V 0.4 V 1 mA mA mA Switching Characteristics at VCC e 5V and TA e 25§ C (See Section 1 for Test Waveforms and Output Load) Symbol tPHL tPHL tPLH tPLH Parameter Conditions Propagation Delay Time High to Low Level Output from A, B, C or D through 2 Levels of Logic CL e 15 pF RL e 400X Min Max Units 25 ns Propagation Delay Time High to Low Level Output from A, B, C or D through 3 Levels of Logic 30 ns Propagation Delay Time Low to High Level Output from A, B, C or D through 2 Levels of Logic 25 ns Propagation Delay Time Low to High Level Output from A, B, C or D through 3 Levels of Logic 30 ns Logic Diagram Tl/F/6516 – 2 3 4 Physical Dimensions inches (millimeters) 16-Lead Ceramic Dual-In-Line Package (J) Order Number 5442ADMQB or DM5442AJ NS Package Number J16A 16-Lead Molded Dual-In-Line Package (N) Order Number DM7442AN NS Package Number N16E 5 5442A/DM5442A/DM7442A BCD to Decimal Decoders Physical Dimensions inches (millimeters) (Continued) 16-Lead Ceramic Flat Package (W) Order Number 5442AFMQB or DM5442AW 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. 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