7442 BCD to Decimal Decoder
EGP 25
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Features Single BCD to Decimal Decoder Standard Pin Configuration Operating Temperature to 70°C Standard TTL Switching Voltages Superseded, Not Recommended for New Designs Part Summary Manufacturer Various Manufacturer’s Part Number 7442 Manufacturer’s Web Site – Futurlec Part Number 7442 Department Integrated Circuits Category 74 Series RoHS Compliant – Package Type 14 Pin DIP Technical Data 7442 Datasheet Pin Description Pin Number Description 1 Decimal 0 Output 2 Decimal 1 Output 3 Decimal 2 Output 4 Decimal 3 Output 5 Decimal 4 Output 6 Decimal 5 Output 7 Decimal 6 Output 8 Ground 9 Decimal 7 Output 10 Decimal 8 Output 11 Decimal 9 Output 12 BCD D Input 13 BCD C Input 14 BCD B Input 15 BCD A Input 16 Vcc – Positive Supply Pin Layout Dimensional Drawing Technical Data Absolute Maximum Ratings Supply Voltage 7V Input Voltage 5.5V Operating Free Air Temperature 0°C to 70°C Storage Temperature Range -65°C to 150°C Recommended Operating Conditions Symbol Parameter Min Typ Max Units Vcc Supply Voltage 4.75 5 5.25 V Vih HIGH Level Input Voltage 2 V Vil LOW Level Input Voltage 0.8 V Ioh HIGH Level Output Current -0.4 mA Iol LOW Level Output Current 16 mA Ta Free Air Operating Temperature 0 70 °C Electrical Characteristics Symbol Parameter Conditions Min Typ Max Units Vi Input Clamp Voltage Vcc=Min Ii=-12mA -1.5 V Voh HIGH Level Output Voltage Vcc=Min Ioh=MAX Vil=MAX 2.4 3.4 V Vol LOW Level Output Voltage Vcc=Min Iol=MAX Vih=MAX 0.2 0.4 V Ii Input Current@MAX Input Voltage Vcc=Max Vi=5.5V 1 mA Iih HIGH Level Input Current Vcc=Max Vi=2.4V 40 µA Iil LOW Level Input Current Vcc=Max Vi=0.4V -1.6 mA Ios Short Circuit Output Current Vcc=Max -18 -55 mA Icch Supply Current with Outputs HIGH Vcc=Max 4 8 mA Iccl Supply Current with Outputs LOW Vcc=Max 12 22 mA Switching Characteristics at Vcc=5V,Ta=25°C Symbol Parameter Conditions Min Typ Max Units tplh Propagation Delay Time LOW-to-HIGH Level Output Cl=15pF Rl=400R 22 nS tphl Propagation Delay Time HIGH-to-LOW Level Output Cl=15pF Rl=400R 15 nS
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