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CD54HC191F3A Datenblatt(PDF) 1 Page - Texas Instruments |
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CD54HC191F3A Datenblatt(HTML) 1 Page - Texas Instruments |
1 / 26 page CD54HC190, CD74HC190 CD54HC191, CD74HC191, CD54HCT191, CD74HCT191 SYNCHRONOUS UP/DOWN COUNTERS WITH DOWN/UP MODE CONTROL SCHS275E − MARCH 2002 − REVISED OCTOBER 2003 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D 2-V to 6-V VCC Operation (’HC190, 191) D 4.5-V to 5.5-V VCC Operation (’HCT191) D Wide Operating Temperature Range of −55 °C to 125°C D Synchronous Counting and Asynchronous Loading D Two Outputs for n-Bit Cascading D Look-Ahead Carry for High-Speed Counting D Balanced Propagation Delays and Transition Times D Standard Outputs Drive Up To 15 LS-TTL Loads D Significant Power Reduction Compared to LS-TTL Logic ICs description/ordering information The CD54/74HC190 are asynchronously presettable BCD decade counters, whereas the CD54/74HC191 and CD54/74HCT191 are asynchronously presettable binary counters. Presetting the counter to the number on preset data inputs (A−D) is accomplished by a low asynchronous parallel load (LOAD) input. Counting occurs when LOAD is high, count enable (CTEN) is low, and the down/up (D/U) input is either high for down counting or low for up counting. The counter is decremented or incremented synchronously with the low-to-high transition of the clock. ORDERING INFORMATION TA PACKAGE† ORDERABLE PART NUMBER TOP-SIDE MARKING CD74HC190E CD74HC190E PDIP − E Tube of 25 CD74HC191E CD74HC191E PDIP − E Tube of 25 CD74HCT191E CD74HCT191E Tube of 40 CD74HC191M SOIC − M Reel of 2500 CD74HC191M96 HC191M SOIC − M Reel of 250 CD74HC191MT HC191M −55 °C to 125°C Tube of 40 CD74HCT191M HCT191M −55 °C to 125°C SOP − NS Reel of 2000 CD74HC190NSR HC190M Tube of 90 CD74HC190PW TSSOP − PW Reel of 2000 CD74HC190PWR HJ190 TSSOP − PW Reel of 250 CD74HC190PWT HJ190 CD54HC190F3A CD54HC190F3A CDIP − F Tube of 25 CD54HC191F3A CD54HC191F3A CDIP − F Tube of 25 CD54HCT191F3A CD54HCT191F3A † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Copyright 2003, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. CD54HC190, 191; CD54HCT191...F PACKAGE CD74HC190 . . . E, NS, OR PW PACKAGE CD74HC191, CD74HCT191 ...E OR M PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 B QB QA CTEN D/U QC QD GND VCC A CLK RCO MAX/MIN LOAD C D On products compliant to MILPRF38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. |
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Ähnliche Beschreibung - CD54HC191F3A |
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