TTL IC 74147 IC 74148 ten- line to BCD octal to BCD priority encoder These TTL encoders feature priority decoding of the inputs to ensure that only the highest- order data line is encoded. All 74147 four output lines are logic 1 ( VSS) when all input lines are logic 0. A priority is assigned to each input so that when two the input with the highest priority is represented on the output, more inputs are simultaneously active . The 74HC/ HCT147 9- input priority encoders accept encoder data from nine active LOW inputs to A8) and provide a binary representation on datasheets the four active LOW outputs Y3). Ten data input linesare encoded to datasheets four- line ( 8 2, 4 1) datasheets BCD. 74LS147 datasheets 74LS147 10 to 4 Priority Encoder Datasheet, 74LS147 Datasheet buy 74LS147. This device features priority encoding of the inputs to ensure thatonly the highest order data lineis en- coded. The 74147 lacks a disable input, so the priority display logic would need external logic to prevent being overridden 74147 by another input to a different 74147. The highest priority line is line 9. The ’ 147 and ’ LS147 devices encode nine data datasheets lines to four- lineBCD. Part of the purpose of priority encoding is to display the first input to go low. A 74147 can do that for any of its 10 inputs, but lacks the means of cascading out to more priority encoders. MM54HC148 MM74HCLine Priority datasheets Encoder February 1988 MM54HC148 MM74HCLine Priority Encoder General Description This priority encoder utilizes advanced silicon- gate CMOS technology It has the high noise immunity low power consumption 74147 typical of CMOS circuits as well as the speeds output drive similar to LB- TTL This priority.
Priority encoder 74147 datasheets. The CD40147B datasheets CMOS encoder features priority encoding of the inputs to ensure that only the highest- order data line is encoded.
Multiple 74148s can be cascaded by connecting EO of the high priority chip to EI of the low priority chip ( see datasheet). The SN54/ 74LS147 and the SN54/ 74LS148 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- lineBCD.
priority encoder 74147 datasheets
74147 Encoder is a priority encoder IC. 74LS147 provides priority decoding of the inputs to ensure that only the highest order data line is encoded.