The counter you will use in lab is the 74xx161, the xx determines what technology was implemented when the chip was built. Buy ic 74ls161 4bit synchronous binary counter dip16 toggle. The data sheet used is for an mc14161 counter from motorola. The ls160a and ls162a can be preset to any state, but will not count beyond 9. Synchronous operation is provided by having all flipflops clocked simultaneously on the positivegoing edge of the clock cp. Technical information motorola semiconductor 74ls161 datasheet. Ic 74161 datasheet pdf these synchronous, presettable counters feature an inter nal carry lookahead for application in highspeed counting designs. Ic 74160 lm 74161 ic 74160 decade counter diagram ic 74163 ic 74160 for decade counter 74160 lm 74160 pin diagram of ic 74163 74161 74160 function table text. The carry lookahead circuitry provides for cascading counters. Mar 02, 2020 74161 counter datasheet pdf 74ls synchronous 4bit binary counters. Ti synchronous 4bit counters,alldatasheet, datasheet, datasheet search site for electronic. Sn5474ls160a sn5474ls161a sn5474ls162a sn5474ls163a state diagram ls160a ls162a ls161a ls163a 12, 14, or 15, it will return to its normal sequence note. The ls160a161a162a163a are highspeed 4bit synchronous count ers. Synchronous 4bit binary counter datasheet texas instruments.
Sn54160 thru sn54163, sn54ls160a thru sn54ls163a, sn54s162,sn54s163, sn74160 thru sn74163, sn74ls160a thru sn74ls163a,sn74s162, sn74s163 synchronous 4bit counterssdls060 october 1976 revised march 19882post office box 655303 dallas, texas 75265 datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and other. N 4bit counter not counting properly electrical engineering stack exchange. Jun 15, 2019 ic 74161 datasheet pdf these synchronous, presettable counters feature an inter nal carry lookahead for application in highspeed counting designs. If you can somehow get me a schematic or a link to a schematic that works you will definitely get the best answer. That is, it can be preset to any number between 0 and 15. If you want to be really slick then you decode all the illegal states and load state 7. Jul 06, 2019 datasheet 74161 pdf these synchronous, presettable counters feature an inter nal carry lookahead for application in highspeed counting designs. Ti, alldatasheet, datasheet, datasheet search site for electronic components and. Use the 74161 chip and other ttl chips to implement a decadebcd counter. Aug 05, 2019 ic 74161 datasheet pdf these synchronous, presettable counters feature an inter nal carry lookahead for application in highspeed counting designs. Jan 20, 2020 74161 counter data sheet pdf 74ls datasheet, 74ls pdf, 74ls data sheet, datasheet, data sheet, pdf, fairchild semiconductor, synchronous 4bit binary counters. The gate output is connected to the clear input to synchronously clear the counter to all low outputs. General description the 74hc161 is a synchronous presettable binary counter with an internal lookhead carry.
These synchronous, presettable counters feature an internal carry. Oct 10, 2019 74161 datasheet pdf datasheet, circuit, data sheet. If preset to state 10, 1 1, within two clock pulses. You can make a single counter chip have any modulus you want. May 11, 2020 74163 datasheet pdf revised february 74ac 74act synchronous presettable binary counter general description features the acact are highspeed. These synchronous, presettable counters feature an inter nal carry lookahead for application in highspeed counting designs. To implement synchronous multistage counters, the tc outputs can be used with the cep and cet inputs in two different ways.
The next count will synchronously load a 0 into the counter, and counting continues. This mode of operation eliminates the output counting spikes that are normally associated with asynchronous rippleclock counters. Since you already need one section of aand there are 6 gates per ic, you simply go. Because presetting is synchronous, a low logic level at the load load input disables the counter and causes the outputs to agree with the setup data after the next clock pulse, regardless of the levels of enp and ent. The 74hc161 is a synchronous presettable binary counter with an internal lookhead carry. It provides, in one package, the ability to select one bit of data from up to eight sources. Synchronous 4bit counters, 74161 datasheet, 74161 circuit, 74161 data sheet. I switched the leds around and connected their input to 5v and their ground to the output pins. Dm54161dm74161dm74163 synchronous 4bit counters october 1992 dm54161dm74161dm74163 synchronous 4bit counters general description these synchronous, presettable counters feature an internal carry lookahead for application in highspeed counting designs.
For example you could do a modulo 3 counter with states 7,8, and 9. I have added a debounce circuit, but still to avail. For some reason i couldnt attach files with my message above, and i cannot post them separately either it appears message 5 of message 9 of i appreciate any insights. Ic 74160 lm 74161 ic 74160 decade counter diagram ic 74163 ic 74160 for decade counter 74160 lm 74160 pin diagram of ic 74163 7416174160 function table text. Figure 1 shows the connections for simple ripple carry, in which the clock period must be longer than the cp to tc delay of the first stage, plus the cumulative cet to tc. Cy7c340 5128lc 7c340 7c340 programming eprom programmer flash370 cy7c346 vhdl 74161 cy7c342b text. How do you make a decade bcd counter with a 74161 ttl chip. Logic gates compare the output to a 9 1001 in binary. You can often get away with less, but as youve just learned, insufficient decoupling can have weird symptoms. The ls151 can be used as a universal function generator to generate any logic function of four variables. These synchronous, presettable counters feature an internal carry lookahead for application in highspeed. They are edgetriggered, synchronously presettable, and cascadable. Sn54161, sn54163, sn74161, sn74163synchronous 4bit counterssdls060 october 1976 revised march 19885post office box 655303 dallas, texas 75265 datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and other semiconductors.