IC 74LS373 PDF

74LS, 74LS Datasheet, 74LS Octal D Flip-Flop, buy 74LS, 74LS pdf, ic 74LS These 8-bit registers feature totem-pole 3-STATE outputs designed specifically for driving highly-capacitive or rela- tively low-impedance loads. Operation and working of Latch IC (74LS) Working of Latch IC and operation of Flip flop to perform as buzzer latch IC its.

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This IC takes eight inputs enabling eight teams to play with it. Being not a machine, I always do silly mistakes or miss important things.

Quiz Buzzer Circuit using IC 74LS – Gadgetronicx

It doesnt latch in HIGH state. AF modulator in Transmitter what is the A? Input port and input output port declaration in top module 2. ModelSim – How to force a struct type written in SystemVerilog?

PV charger battery circuit 4. I mean which part of circuit is troubling 74ls3373

And the high output signal further switches the Kc on and thereby the respective bulb of the team will glow and also the transistor T1 connected to the Buzzer will switch the buzzer ON. This low state in the LE pin enables the latch of the IC thereby providing continuous high signal in the output pin.

[SOLVED] Help with Latch IC 74LS based latching ciruit

You have LE fixed High, hence output equals input Since the output was latched with the input this circuit eliminate the confusion among the participants 774ls373 also it provides room for eight teams to play at a time. Help with Latch IC 74LS based latching ciruit I actually made a similar project back in the 80’s when experimemting with programmable logic the good old days! Notify of all new follow-up comments Notify of new replies to all my comments.

Heat sinks, Part 2: Lets look into the working of this quiz buzzer circuit. In this point of time the IC will not respond to any of the input signal given by any other switches to it.

The only potential issue is both switches operating together as the output becomes indeterminate. Dec 242: Here is the Link for id datasheet kindly take a look at the electrical characterstics, hope this helps.

How do you get an MCU design to market quickly? Measuring air gap of a magnetic core for home-wound inductors and flyback transformer 7. Quote and Order boards in minutes on: Thanks also for reminder on LED driver, I had dropped down to logic states!

And diodes was used to allow the forward flow of current from the output pins of the IC and thereby switching the transistor ON and thus perform the Latching operation. Frank Donald is an Electronics and Communication Engineer who loves building stuff in his free time. Datasheet of 74LS is also attached.

The initial state of the LED is off U3 output is low. Do I need pull up resistors or does this sound like bad chips. The current I1, R7 and Q2 replace the push-button switch in order to simulate the circuit. Results 1 to 20 of Notify of all new follow-up comments Notify of new replies to all my comments. Quote and Order boards in minutes on: Frank Donald November 4, 3 Comments. Last edited by sharikbaig; 27th August at I tried this circuit in multisim.

Video games, 74lw373 and programming are the things he loves most. But when the Latch Enable Pin was pulled low, the data will be latched so that the data appears instantaneously providing a Latching action. Choosing IC with EN signal 2.


Quiz buzzer circuits have been available numerous in number yet we 7l4s373 many problems in most of the circuits and some cost much. Frank Donald is an Electronics and Communication Engineer who loves building stuff in his free time. The IC 74LS is a transparent latch consists of a eight latches with three state outputs for bus organized systems applications. The switches are given to each participating competitors and the respective bulbs can be placed before them to determine which team pressed the switch 74la373.

I will get ic’s by day after tomorrow, will try your schematic and update you soon. You people are very helpful, Thanks. The circuit 74ls3373 powered with 5V power supply and as you can see that the switches were connected directly to the 774ls373 supply so when the switch is not pressed it gives low signal to the input pins D0-D7. Each momentary switch would latch a solenoid valve and when activated switch off the others valvesa bit like a manual washing machine.

This IC operates with maximum of 5 V and widely used in many kinds of electronic appliances. If you like I will draw the schematic for you. They were a great introduction to simple logic and hardware which is a bit lost in todays massive chips.

Therefore almost every post I write would usually be updated several times till it reaches its saturation: Here is an example http: Our main server could be out of service anytime. As we all know the operation of flip flop that any input to the D pin at the present state will be given as output in next clock cycle. It could have been a useful touch switch which weren’t very common thenbut I learnt how to filter out, clamp and provide immunity instead!

Originally Posted by KerimF.