The SN74LS147 and the SN74LS148 are Priority Encoders. They provide priority decoding of the inputs to ensure that only the highest order data line is encoded. Both devices have data inputs and outputs which are active at the low Logic level. The LS147 encodes nine data lines to four-line (8-4-2-1) BCD. The implied decimal zero condition does not require an input condition because zero is encoded when all nine data lines are at a high Logic level. The LS148 encodes eight data lines to three-line (4-2-1) binary (octal). By providing cascading circuitry (Enable Input EI and Enable Output EO) octal expansion is allowed without needing external circuitry By ON Semiconductor
SN74LS147 's PackagesSN74LS147 's pdf datasheet

SN74LS147 Pinout, Pinouts
SN74LS147 pinout,Pin out
This is one package pinout of SN74LS147,If you need more pinouts please download SN74LS147's pdf datasheet.

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