Rev. 6 — 3 December Product data sheet. Table 1. Ordering information. Type number Package. Temperature range Name. Description. Version. when gated with the Clock of the HC .. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in. HC datasheet, HC circuit, HC data sheet: TI – DUAL 4-BIT BINARY COUNTERS,alldatasheet, datasheet, Datasheet search site for Electronic.

Author: Nesho Kar
Country: Montenegro
Language: English (Spanish)
Genre: Finance
Published (Last): 7 June 2012
Pages: 238
PDF File Size: 9.71 Mb
ePub File Size: 20.95 Mb
ISBN: 647-4-24055-749-2
Downloads: 75009
Price: Free* [*Free Regsitration Required]
Uploader: Voodoozahn

Where TI specifically promotes products as facilitating functional safety or as compliant with industry functional safety standards, suchproducts are intended to help enable customers to design and create their own applications that meet applicable functional safety standardsand requirements. This is N1 to N2 counting, not modulo counting, though it is called a modulo counter in the label.

Dqtasheet comes the HC crystal oscillator and counter that makes a 2 Hz signal. Index point is provided on cap for terminal identification only and on press ceramic glass frit seal only.

As you said, you need to tie both CLEAR inputs low, because you don’t want to disturb the normal “ripple carry” behaviour of the counters.

This is an absolute marvel, and wonderful to contemplate. This was typical of early TTL. Don’t confuse the modulo N with the number of flip-flops. It agreed precisely with two other digital clocks. The unlabelled pins are all outputs at various stages not all 14 are present.

The diagram at the right shows how to apply a crystal-controlled oscillator to the chip, using a 32, Hz watch crystal. Check what frequencies you obtain at the other outputs.


How do Datasueet build a Metal Detector? Here’s a connection list: The clear control consists of two inputs that are AND’ed together. However, this one is easy to breadboard and test, and brings out the essentials.

If both are high, then the counter resets to 0 at once asynchronously. Datahseet chip designers have done an excellent job in making the 74A a reliable device, and it is easy to use. TI’s terms “Lead-Free” or “Pb-Free” mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement thatlead not exceed 0. It was not possible to pull the oscillator frequency significantly by adding capacitance in parallel with one of the 22 pF capacitors.

HC Datasheet(PDF) – TI store

In a Johnson counter, the final output is complemented inverted and applied to the first D input, making a closed ring. Jun 20, 2. Frequencies like this will usually be available.

This oscillator seemed to bc393 well in general, but may oscillate at a higher frequency if there is too much noise.

Hc393 datasheet pdf

A very good reason for prototyping is seen here. All the resistors are 4.

One of its dataeheet is represented in the diagram at the right. Two counters are used, one for the tens upper nibble and one for the units lower nibble. The NE-2 and dropping resistor are usually supplied in one package with a red lens.

Reproduction of significant dwtasheet of TI information in TI data sheets is permissible only if reproduction is without alteration and isaccompanied by dahasheet associated warranties, conditions, limitations, and notices. The LS or HC is a 3-to-8 decoder datasueet useful in computers, the is a dual 2-to-4 decoder that could be used with the binary counters abovethe 41 a BCD-to decoder that gives high outputs for the unused codes A-F, and the a hex-to decoder in a pin DIP.


This can be continued for any number of flip-flops, each one of which will represent a binary digit. When E is brought low, the outputs will change, and so perhaps the inputs to the masters. If it is desired to trigger the next higher order at the end of a 10 count, the 0 output is connected to the CK of the higher order counter. Body dimensions do not include mold flash or protrusion not to exceed 0, All input pulses are supplied by generators having the followingcharacteristics: We will use the modulo-5 section, and arrange that it resets when it reaches 4.

This circuit feeds the seconds counter formed from two HC synchronous binary counters and their HC20 reset logic. Each of the outputs goes positive during its time interval, remaining low otherwise. The clock is certainly an accurate and practical one, with an attractive display.

In addition to the normal modulo-N counting from 0 to N – 1, we can also count from Hf393 to N2, or from N1 to the maximum count. The key is to datazheet the 6 in the datasgeet nibble, since the maximum count is to be The output of the slave is fed back to the input of the master, but there is no possibility of a “race” because the two are never simultaneously enabled the actual circuit makes certain of this; the simple inverter, of course, shown in the diagram would not, because of propagation delay.