Moteur de recherche de fiches techniques de composants électroniques |
|
MM54HC192 Fiches technique(PDF) 1 Page - National Semiconductor (TI) |
|
|
MM54HC192 Fiches technique(HTML) 1 Page - National Semiconductor (TI) |
1 / 8 page TLF5011 January 1988 MM54HC192MM74HC192 Synchronous Decade UpDown Counters MM54HC193MM74HC193 Synchronous Binary UpDown Counters General Description These high speed synchronous counters utilize advanced silicon-gate CMOS technology to achieve the high noise im- munity and low power consumption of CMOS technology along with the speeds of low power Schottky TTL The MM54HC192MM74HC192 is a decade counter and the MM54HC193MM74HC193 is a binary counter Both coun- ters have two separate clock inputs an UP COUNT input and a DOWN COUNT input All outputs of the flip-flops are simultaneously triggered on the low to high transition of ei- ther clock while the other input is held high The direction of counting is determined by which input is clocked These counters may be preset by entering the desired data on the DATA A DATA B DATA C and DATA D inputs When the LOAD input is taken low the data is loaded inde- pendently of either clock input This feature allows the count- ers to be used as divide-by-n counters by modifying the count length with the preset inputs In addition both counters can also be cleared This is ac- complished by inputting a high on the CLEAR input All 4 internal stages are set to a low level independently of either COUNT input Both a BORROW and CARRY output are provided to en- able cascading of both up and down counting functions The BORROW output produces a negative going pulse when the counter underflows and the CARRY outputs a pulse when the counter overflows The counters can be cascaded by connecting the CARRY and BORROW outputs of one de- vice to the COUNT UP and COUNT DOWN inputs respec- tively of the next device All inputs are protected from damage due to static dis- charge by diodes to VCC and ground Features Y Typical propagation delay Count up to Q 28 ns Y Typical operating frequency 27 MHz Y Wide power supply range 2 – 6V Y Low quiescent supply current 80 mA maximum (74HC Series) Y Low input current 1 mA maximum Y 4 mA output drive Connection Diagram Dual-In-Line Package TLF5011 – 1 Order Number MM54HC192193 or MM74HC192193 Truth Table Count Clear Load Function Up Down u H L H Count Up H u L H Count Down X X H X Clear X X L L Load H e high level L e low level u e transition from low-to-high X e don’t care C1995 National Semiconductor Corporation RRD-B30M115Printed in U S A |
Numéro de pièce similaire - MM54HC192 |
|
Description similaire - MM54HC192 |
|
|
Lien URL |
Politique de confidentialité |
ALLDATASHEET.FR |
ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |