SN54LS848

The SN54LS848 is designed as eight input priority encoder which provides the 8-line to 3-line function. The outputs (A0A2) and inputs (07) are active low. The active low input of SN54LS848 which has the highest priority (input 7 has the highest) is represented on the outputs (output A0 is the lowest bit).

Some guaranteed operating ranges of SN54LS848 have been concluded into several points as follow. (1)Its supply voltage range would be min 4.5V and typ 5.0V and max 5.5V. (2)Its operating ambient temperature range would be min -55°C and typ 25°C and max 125°C. (3)Its output current high level would be max -0.4mA. (4)Its output current low level would be max 4mA.

Also some DC characteristics of SN54LS848 are concluded as follow. (1)Its input high voltage would be min 2.0V with conditions of guaranteed input high voltage for all inputs. (2)Its input low voltage would be max 0.7V with conditions of guaranteed input low voltage for all inputs. (3)Its input clamp diode voltage would be typ -0.65V and max -1.5V with condition of Vcc=min, Iin=-18mA. (4)Its output high voltage would be min 2.7V and typ 3.5V. (5)Its output low voltage would be typ 0.25V and max 0.4V with condition of Iol=12mA. (6)Its input high current would be max 20uA with condition of Vcc=max and Vin=2.7V and it would be max 0.1mA with condition of Vcc=max and Vin=7.0V. (7)Its input low current would be max -0.4mA. (8)Its short circuit current would be min -20mA and max -100mA with condition of Vcc=max. (9)Its power supply current would be max 23mA with condition of Vcc=max.

And some AC characteristics of SN54LS848 are concluded into several points as follow. (1)Its propagation delay 1 thru 7 would be typ 12ns and max 18ns. (2)Its propagation delay EI would be typ 25ns and max 39ns. (3)Its propagation delay 0 thru 7 would be typ 11ns and max 18ns. And so on. If you have any question or suggestion or want to know more information about SN54LS848 please contact us for details. Thank you!