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7447 BCD to 7 Segment Decoder/Driver

15.00 EGP

SKU: IC_7447 Categories: ,

7447 – 7447 BCD to 7-Segment Decoder/Driver Datasheet


7447 - 7447 BCD to 7-Segment Decoder/Driver

arrowSingle BCD to 7-Segment Decoder with Open Collector Output

arrowOutputs Directly Interface to CMOS, NMOS and TTL

arrowLarge Operating Voltage Range

arrowWide Operating Conditions

arrowNot Recommended for New Designs Use 74LS47

Pin Layout
TTL 7447 Pin Layout
Pin Description
Pin Number Description
1 BCD B Input
2 BCD C Input
3 Lamp Test
4 RB Output
5 RB Input
6 BCD D Input
7 BCD A Input
8 Ground
9 7-Segment e Output
10 7-Segment d Output
11 7-Segment c Output
12 7-Segment b Output
13 7-Segment a Output
14 7-Segment g Output
15 7-Segment f Output
16 Vcc – Positive Supply
Dimensional Drawing
DIP16 IC 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 Votage 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 [email protected] 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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