SN54/74LS is an UP/DOWN MODULO Binary Counter. Separate. Count Up and Count Down Clocks are used and in either counting mode the. 74LS datasheet, 74LS pdf, 74LS data sheet, datasheet, data sheet, pdf, Fairchild Semiconductor, Synchronous 4-Bit Binary Counter with Dual Clock. be preset to either level by entering the desired data at the inputs while the load input is LOW. The output will change independently of the count pulses.

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Previous 1 2 Connect a resistor to ground for the internal current mirror which feeds. Try Findchips PRO for pin configuration. The LS outputs can connect directly to the up and down clock inputs of counters such as oror My best guess is that the pulse is too slow, but even when I apply a Hz square wave nothing happens.

The A and B inputs dtaa be swapped to reverse the direction of the external counters.


Datasheet(PDF) – Fairchild Semiconductor

When I flip the switch I know I’m getting a slow pulse maybe that’s the problem, and if so, is there sheett circuit I can build to make a quick single pulse? I hope I’ve described my situation well enough, I just can not figure out why the counter isn’t counting.

This IC is a discontinue item.

SiDY Jul data sheet datasheet. Input for external foe connection. Discussion in ‘ The Projects Forum ‘ started by gcentauriJan 25, LFLSS pin ttl counter A high level applied to this input selects X4.

74LS193 Datasheet PDF

Jan 28, 9, The information is contained in the truth-table in the datasheet. F bypass capacitor and resistor to ground for the internaldirection o f the external counters. Jan 26, No abstract text available Text: No, create an account now.

Jan 26, 3. The counters have separate count-up and count-down clock inputs CPu andstate or state Confirm that 5V power is present on the Power pin pin 16 and ground is present on pin 8.


questions about counter | All About Circuits

Jul 17, 22, 1, The signals can drive directly the count-up and count-down clocks on the next counter in a series. Do you already have an account? LFLS pin ttl counter. Do you have LOAD pin 11 held high?

Jan 25, 1. The LFLSS outputs can connect directly to the up and down clock inputs of counters such as or Jan 26, 2.

InputThe A and B inputs can be swapped to reverse the direction of the external counters. Apr 14, 7, If not, it’ll always be loading the data inputs into the data outputs.

questions about 74193 counter

Jan 26, 8. I have read the data-sheets and read quite a bit on this forum as well, but nothing I try seems to work. Mar 24, 21, 2, The count-down terminal is held high.