SN74LS445

The SN74LS445 is designed as a monolithic BCD-to-decimal decoder/drivers which 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 valid BCD input logic ensures that all outputs remain off for all invalid binary input conditions.

SN74LS445 has five features. (1)Low voltage versions of SN74LS145. (2)Full decoding of input logic. (3)It has 80mA sink current capability. (4)All outputs are off for invalid BCD input conditions. (5)Low power dissipation would be 35mW typical. Those are all the main features.

Some absolute maximum ratings of SN74LS445 have been concluded into several points as follow. (1)Its supply voltage Vcc would be 7V. (2)Its input voltage would be 7V. (3)Its operating free-air temperature range would be from 0°C to 70°C. (4)Its storage temperature range would be from -65°C to 150°C. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics of SN74LS445 are concluded as follow. (1)Its high level input voltage would be min 2V. (2)Its low level input voltage would be max 0.8V. (3)Its input clamp voltage would be max -1.5V. (4)Its off-state output current would be max 250uA. (5)Its on-state output voltage would be typ 0.25V and max 0.4V at Iol=12mA and would be typ 0.35V and max 0.5V at Iol=24mA and would be typ 2.3V and max 3V at Iol=80mA. (6)Its input current at maximum input voltage would be max 0.1mA. (7)Its high-level input current would be max 20uA. (8)Its low level input current would be max -0.4mA. (9)Its supply current would be typ 7mA and max 13mA. And so on. At present we have not got so much information about this IC and we would try hard to get more information about it. If you have any question or suggestion or want to know more information please contact us for details. Thank you!