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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74HC Datasheet catalog
No, create an account now. It should also go to ground, as floating inputs ratasheet create problems. Feb 27, Does it live up its predecessor? This document supersedes and replaces all information supplied prior to the publication hereof.
Apr 20, 15, This document contains data from the preliminary speci? CPD is used to determine the dynamic power dissipation PD in? Rt must be larger than the ON resistance in series with it, which typically is ? You would need a frequency counter to see what the actual output frequency was, and change components to get it to the correct frequency.
NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included datashet and shall have no liability for the consequences of use of such information. It uses the same pins 10 and 11 as the RC oscillator. What else could be wrong? You May Also Like: The resistor at pin 10 is the timing resistor but yours is at pin It cannot be used as supply pin or input.
Legal texts have been adapted to the new company name where appropriate. Right to make changes — NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation speci? Could anyone help me please? I am using the auto triggering. For starting and maintaining oscillation a minimum transconductance is dztasheet, so R2 should not be too large.
Feb 26, The function of R2 is to minimize the in? However, I tried this configuration that is annexed in the image below and I cannot get any oscillation at all. External component connection for a crystal oscillator Fig Feb 23, 1.
Dynamic characteristics Table 6. The oscillator may be replaced by an external clock signal at input RS. Quote of the day. Product data sheet Rev. In consideration of accuracy, Ct must be larger than the inherent stray capacitance. The counter advances on the negative-going transition of RS. The output will probably be close to 1 MHz. Dec 20, 10, 1, Feb 24, 5.
Make a small pcb for it and use a 0. Post your schematic and show the supply voltage. Does the IC have a supply bypass capacitor?
Terms and conditions of 74hc400 — NXP Semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http: In the last experiment I tried to use a ceramic capacitor. Test circuit for measuring switching times Table 8.
A practical value for R2 is 2. When I measured in the Q7 pin the oscillation was more clear than the olther pins A short data sheet is intended for quick reference only and should not be relied upon dstasheet contain detailed and full information. This document contains the product speci?
Feb 24, 4.
However is my circuit correct now for a 1MHz oscillator? The datasheet of the 74HC shows datashfet its minimum allowed timing capacitor is 50pf. Are you using auto triggering or internal?
F Rbias k? Have you used this one? Revision history Table Waveforms showing the master reset MR pulse width, the master reset to output Qn propagation delays and the master reset to clock RS recovery time Table 7.