74HC Datasheet, 74HC stage Binary Counter Datasheet, buy 74HC The MC54/74HC is identical in pinout to the standard CMOS. MCB. The device inputs are compatible with standard CMOS outputs; with pullup. INTEGRATED CIRCUITS. 74HC/HCT stage binary ripple counter with oscillator. For a complete data sheet, please also download.
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No, create an account now. Yes, my password is: Apr 20, 15, Could anyone help me please?
Do you already have an account? Does it live up 74hc400 predecessor? The resistor at pin 11 should be about 10 times the value of the timing resistor but yours is way too high.
You don’t show pin 8 tied to ground, and pin 12 is floating. For starting and maintaining oscillation a minimum transconductance is necessary, so R2 should not be too large. Due to tolerances in the resistors and capacitor, it may be somewhat off. The cmos oscillator is very stable if it has a regulated power supply and it does not pick up interference shielded in datashedt grounded metal box.
For more information, please visit: Have you used this one? Short data sheet — A short data sheet is an extract from a full data sheet with the same product type number s and title. Datazheet is my circuit correct now for a 1MHz oscillator?
However, NXP Semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information.
All referenced brands, product names, service names and trademarks are the property of their respective owners. The format of this data sheet has been redesigned to comply with the new identity guidelines of NXP Semiconductors.
A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. Does the IC have a supply bypass capacitor? The circuit for the crystal oscillator is in the datasheet. Applications — Applications that are described herein for any of these products are for illustrative purposes only.
Plastic or metal protrusions of 0. It should also go to ground, as floating inputs always create problems. Limiting values Table 3.
74HC Datasheet(PDF) – NXP Semiconductors
RC oscillator frequency as a function of Rt Fig What else could be wrong? The resistor at pin 10 is the timing resistor but yours is at pin F Rbias k? NXP Semiconductors does not 74hx4060 any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information.
The oscillator may be replaced by an external clock signal at input RS. I tried the experiment with the cited values and the circuit still not oscilatting Recommended operating conditions Table 4. Dec 20, 10, 1, This document contains data from the preliminary speci? Take a look in the photo.
Are you using auto triggering or internal?