CD4028BM/CD4028BC BCD-to-Decimal Decoder General Description Features The CD4028BM/CD4028BC is a BCD-to-decimal or binaryto-octal decoder consisting of 4 inputs, decoding logic gates, and 10 output buffers. A BCD code applied to the 4 inputs, A, B, C, and D, results in a high level at the selected 1-of-10 decimal decoded outputs. Similarly, a 3-bit binary code applied to inputs A, B, and C is decoded in octal at outputs 0 – 7. A high level signal at the D input inhibits octal decoding and causes outputs 0–7 to go low. All inputs are protected against static discharge damage by diode clamps to VDD and VSS. Y Y Y Y Y Y Wide supply voltage range 3.0V to 15V High noise immunity 0.45 VDD (typ.) Low power TTL fan out of 2 driving 74L compatibility or 1 driving 74LS Low power Glitch free outputs ‘‘Positive logic’’ on inputs and outputs Applications Y Y Y Code conversion Address decoding Indicator-tube decoder Logic and Connection Diagrams Dual-In-Line Package TL/F/5959 – 2 Top View Order Number CD4028B TL/F/5959 – 1 Truth Table D C B A 0 1 2 3 4 5 6 7 8 9 1 e High Level 0 e Low Level C1995 National Semiconductor Corporation 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 0 0 1 1 0 0 0 1 0 1 0 1 0 1 0 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 1 1 1 1 1 1 0 0 1 1 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 0 1 0 1 0 1 TL/F/5959 BCD States - * Extraordinary States RRD-B30M105/Printed in U. S. A. CD4028BM/CD4028BC BCD-to-Decimal Decoder February 1988 Absolute Maximum Ratings (Notes 1 & 2) Recommended Operating Conditions (Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage (VDD) Input Voltage (VIN) Storage Temperature Range (TS) Power Dissipation (PD) Dual-In-Line Small Outline Lead Temperature (TL) (Soldering, 10 seconds) Supply Voltage (VDD) Input Voltage (VIN) Operating Temperature Range (TA) CD4028BM CD4028BC b 0.5 to a 18V b 0.5 to VDD a 0.5V b 65§ C to a 150§ C 3 to 15V 0 to VDDV b 55§ C to a 125§ C b 40§ C to a 185§ C 700 mW 500 mW 260§ C DC Electrical Characteristics CD4028BC (Note 2) Symbol Parameter b 55§ C Conditions Min IDD Quiescent Device Current VDD e 5V, VIN e VDD or VSS VDD e 10V, VIN e VDD or VSS VDD e 15V, VIN e VDD or VSS VOL Low Level Output Voltage VOH VIL VIH IOL IOH IIN lIOl k 1 mA, VIL e 0V, VIH e VDD VDD e 5V VDD e 10V VDD e 15V High Level Output Voltage lIOl k 1 mA, VIL e 0V, VIH e VDD VDD e 5V VDD e 10V VDD e 15V Low Level Input Voltage High Level Input Voltage a 25§ C Max lIOl k 1 mA VDD e 5V, VO e 0.5V or 4.5V VDD e 10V, VO e 1V or 9V VDD e 15V, VO e 1.5V or 13.5V 5 10 20 0.01 0.01 0.02 5 10 20 150 300 600 mA mA mA 0.05 0.05 0.05 0 0 0 0.05 0.05 0.05 0.05 0.05 0.05 V V V 4.95 9.95 14.95 5 10 15 2.25 4.5 6.75 Min Units Max 1.5 3.0 4.0 lIOl k 1 mA VDD e 5V, VO e 0.5V or 4.5V VDD e 10V, VO e 1V or 9V VDD e 15V, VO e 1.5V or 13.5V a 125§ C Typ 4.95 9.95 14.95 Min Max 4.95 9.95 14.95 1.5 3.0 4.0 V V V 1.5 3.0 4.0 V V V 3.5 7.0 11.0 3.5 7.0 11.0 2.75 5.5 8.25 3.5 7.0 11.0 V V V Low Level Output Current VIL e 0V, VIH e VDD (Note 3) VDD e 5V, VO e 0.4V VDD e 10V, VO e 0.5V VDD e 15V, VO e 1.5V 0.64 1.6 4.2 0.51 1.3 3.4 1.0 2.6 6.8 0.36 0.9 2.4 mA mA mA High Level Output Current VIL e 0V, VIH e VDD (Note 3) VDD e 5V, VO e 4.6V VDD e 10V, VO e 9.5V VDD e 15V, VO e 13.5V b 0.25 b 0.62 b 1.8 b 0.2 b 0.5 b 1.5 b 0.4 b 1.0 b 3.0 b 0.14 b 0.35 b 1.1 mA mA mA Input Current VDD e 15V, VDD e 15V, VIN e 0V VIN e 15V b 10 b 5 b 0.1 b 0.1 10b5 0.1 b 1.0 0.1 1.0 mA mA DC Electrical Characteristics CD4028BC (Note 2) Symbol Parameter b 40§ C Conditions Min IDD Quiescent Device Current VOL Low Level Output Voltage VDD e 5V, VIN e VDD or VSS VDD e 10V, VIN e VDD or VSS VDD e 15V, VIN e VDD or VSS lIOl k 1 mA, VIL e 0V, VIH e VDD VDD e 5V VDD e 10V VDD e 15V 2 Max a 25§ C Min a 85§ C Min Units Typ Max Max 20 40 80 0.01 0.01 0.02 20 40 80 150 300 600 mA mA mA 0.05 0.05 0.05 0 0 0 0.05 0.05 0.05 0.05 0.05 0.05 V V V DC Electrical Characteristics CD4028BC (Note 2) (Continued) Symbol Parameter b 40§ C Conditions Min Max High Level Output Voltage lIOl k 1 mA, VIL e 0V, VIH e VDD VDD e 5V 4.95 9.95 VDD e 10V 14.95 VDD e 15V VOH VIL Low Level Input Voltage VIH High Level Input Voltage IOL Low Level Output Current (Note 3) IOH lIOl k 1 mA VDD e 5V, VO e 0.5V or 4.5V VDD e 10V, VO e 1V or 9V VDD e 15V, VO e 1.5V or 13.5V Input Current Typ 4.95 9.95 14.95 5 10 15 1.5 3.0 4.0 2.25 4.5 6.75 lIOl k 1 mA VDD e 5V, VO e 0.5V or 4.5V VDD e 10V, VO e 1V or 9V VDD e 15V, VO e 1.5V or 13.5V 3.5 7.0 11.0 3.5 7.0 11.0 VIH e VDD, VIL e 0V VDD e 5V, VO e 0.4V VDD e 10V, VO e 0.5V VDD e 15V, VO e 1.5V 0.52 1.3 3.6 0.44 1.1 3.0 High Level Output Current VIH e VDD, VIL e 0V (Note 3) VDD e 5V, VO e 4.6V VDD e 10V, VO e 9.5V VDD e 15V, VO e 13.5V IIN a 25§ C Min VDD e 15V, VDD e 15V, b 0.2 b 0.5 b 1.4 VIN e 0V VIN e 15V a 85§ C Max Min Units Max 4.95 9.95 14.95 1.5 3.0 4.0 V V V 1.5 3.0 4.0 3.5 7.0 11.0 V V V 0.36 0.9 2.4 mA mA mA b 0.12 b 0.3 b 1.0 mA mA mA 0.88 2.2 6.0 b 0.16 b 0.32 b 0.4 b 0.8 b 1.2 b 3.5 V V V b 0.3 b 0.3 b 1.0 0.3 0.3 1.0 mA mA AC Electrical Characteristics* TA e 25§ C, CL e 50 pF, RL e 200k, Input tr e tf e 20 ns, unless otherwise specified Symbol Parameter Conditions Typ Max Units tPHL or tPLH Propagation Delay Time VCC e 5V VCC e 10V VCC e 15V Min 240 100 70 480 200 140 ns ns ns tTHLor tTLH Transition Time VCC e 5V VCC e 10V VCC e 15V 175 75 60 350 150 110 ns ns ns CIN Input Capacitance Any Input 5 7.5 pF * AC Parameters are guaranteed by DC correlated testing. Note 1: ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed, they are not meant to imply that the devices should be operated at these limits. The table of ‘‘Recommended Operating Conditions’’ and ‘‘Electrical Characteristics’’ provides conditions for actual device operation. Note 2: VSS e 0V unless otherwise specified. Note 3: IOL and IOH are tested one output at a time. Switching Time Waveforms TL/F/5959 – 3 3 CD4028BM/CD4028BC BCD-to-Decimal Decoder Physical Dimensions inches (millimeters) Ceramic Dual-In-Line Package (J) Order Number CD4028BMJ or CD4028BCJ NS Package Number J16A Molded Dual-In-Line Package (N) Order Number CD4028BMN or CD4028BCN NS Package Number N16E 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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