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74S Datasheet, 74S PDF, 74S Data sheet, 74S manual, 74S pdf, 74S, datenblatt, Electronics 74S, alldatasheet, free, datasheet. Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise . Buy online SN74SN duel VCO by Texas Instruments. Download Texas Instruments SN74LSN t pricing and stock check.

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Since it’s an iverter, and CMOS gates basically pull the output all the way to one rail or the other anyway, I figure you’re kind of giving it an extra power or ground connection through the output if you connect the input and output to oposite rails. Inconsistent Results with Different Chips Posted by jpanhalt in forum: I initially had a little pin header for jumpers to select additional input capacitance for lower frequency ranges as shown in the upper-left corner of the drawing, but even with none of the jumpers installed, the tiny bit of capacitance between the top pins and ground was holding the maximum frequency down, so I cut the connection at point A marked with the “X”, near pin 9and also shorted out R1, bringing the max up to 73MHz.

Even if they were made a standard product, you wouldn’t be able to get fast enough logic and memory for it or build suitably for running that fast.


If the frequency is to high, you can use 5 or 7 gates. Yes, my password is: It used an input of 80 or MHz and there might have been a PLL to generate a lot more frequencies than you could merely by changing a divisor. It’s easier however to use stock crystals, or better yet, complete ready-made oscillators that fit into an IC socket, from one of the major distributors like JamecoMouserDigi-Keyor so many others.

Parasitic capacitance is not normally an issue. Nov 17, 2.

74S124 Datasheet

Help with IC Equivalents Posted by awinstephen in forum: You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum. I remember reading about it in these forums awhile back how someone used an AVR for an excellent programmable clock source. 74124

When the power supply is 12 Volts, the speed will be much higher as when 5 Volts is used. Breadboards aren’t really good. The combination 74s1244 expected to enable new classes of products that meet customer needs in the data center and Internet of Things IoT market segments.

Embedded Systems and Microcontrollers. Posted by txfirefighter in forum: Nov 17, 8. Nov 17, 1.

Nov 17, 3. Select a forum Really advanced constructors will exceed the maximum rated processor speed – but if you do this you have to be prepared for things to fail. But there no output shown in the oscilloscope. These will work to 85MHz.


After dividing it by 47s124 with a flip-flop, that makes for Previous topic Next topic. A ring of 3 gates will make an oscillator. You could try the attached circuit using various Schmidt trigger inverters.

>5Mhz oscillator with discrete logic chips | All About Circuits

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Circuit Cellar had a featureless clock project. No, create an account now. The transmitter coil inserted with one pin only! Not too much speed or even variation in desired clocks needed to clock 16 bit counters.

Oct 2, 17, 5, You could add a microcontroller for the purpose, I suppose. Connect the enable pin to ground.

74S pdf Datasheet P1 Part Num IC-ON-LINE

Oct 24, 5. Nov 24, See figure 2 of the datasheet. Modify R1 and C1 for desired frequency. Hello, Did you see my last remark in my previous post? Sun May 02, 1: Based on the national time clock signal.