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7445 - 7445 BCD to Decimal Decoder/Driver Datasheet

Photograph
7445 BCD to Decimal Decoder/Driver

Features
  • Single BCD to Decimal Decoder
  • Outputs Directly Interface to CMOS, NMOS and TTL
  • Large Operating Voltage Range
  • Wide Operating Conditions
  • Not Recommended for New Designs

Pin Layout
TTL 7445 Pin Layout

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

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 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