These up down counters are monolithic complementary. MOS (CMOS) integrated circuits The CDBM and. CDBC are BCD counters while the. Details, datasheet, quote on part number: CD (CMOS) integrated circuits The CDBM and CDBC are BCD counters while the CDBM. The CDBC and CDBC up/down counters are monolithic complementary MOS (CMOS) integrated cir- cuits. The CDBC is a BCD counter.

Author: Akinotaur Mezibei
Country: Belgium
Language: English (Spanish)
Genre: Literature
Published (Last): 10 January 2006
Pages: 364
PDF File Size: 3.11 Mb
ePub File Size: 17.72 Mb
ISBN: 728-7-60478-566-2
Downloads: 78952
Price: Free* [*Free Regsitration Required]
Uploader: Goltigami

40192 Up/Down Counter

OK I have to apologies for the Rushed Diagram, I thought I had shown clearly, but after a nights sleep 400192 at it again it actually looks like crap ha-ha anyway I have made some modifications to the schematic, with SGT’s suggestions and the DPDT switch in its current state which I believe without de-bouncing is causing the error.

Add K pullups on Schmitt Trigger input.

Nov 7, 3. Arguably, the situation exists only momentarily. Jul 17, 22, 1, As it is, it can be anything with a floating input. Show the complete schematic of your Schmitt Trigger circuit.


Of course, the one drawback with this circuit is that it requires a double-throw push-button. Mar 24, 21, 2, You have to show your schematic.

datadheet The inverter can be either plain inverter or Schmitt-trigger inverter. It needs to be one or the other. Nov 7, 6. Your schematic is incorrect.

National Semiconductor

Nov 7, 8. Dataxheet will be floating. And I might add, don’t be so sure of yourself. Mar 14, 20, 5, Nov 8, Nov 7, 2.

Nov 7, 1. Oct 2, 17, 5, Just to clarify; the counter increments or decrements when the up or down input transitions from 0 to 1. Nov 7, 7.

CMOS gates especially have very high input impedances. Below is my suggestion to fix all of the above: We decided to go back to the origins datasheett AI versus human gaming.

Nov 7, 5. Hence they will act like radio antennas and will bounce around like crazy. You May Also Like: It is both your switch and your Schmitt-trigger that are not properly wired. The cap will help to prevent bounce.

National Semiconductor – datasheet pdf

Your CD and CU inputs are floating. The worst thing you can to do a CMOS input is to leave it floating. Your name or email address: Hang on a second Both of these have inverting outputs; but that was not shown on the diagram.


Nov 7, 9. How to Use the Arduino Joystick Shield v2. He said he is using 2 inverters. If you are using TTL gates, make sure you change the resistors to 1K ohms. The RC filter is configured incorrectly. Conversion of JK Flip-Flops This article teaches you how to convert a given JK flip-flop circuit to other types of flip-flops while verifying the process of conversion.

The output of the inverter must be normally HIGH for this counter read the data sheet. Discussion in ‘ General Electronics Chat ‘ started by sni9erNov 7, Inverters as shown will also work in this application.