Electronic Components Datasheet Search |
|
CD54ACT191 Datasheet(PDF) 1 Page - Intersil Corporation |
|
CD54ACT191 Datasheet(HTML) 1 Page - Intersil Corporation |
|
1 / 1 page CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures. Copyright © Harris Corporation 1994 1 SEMICONDUCT OR CD54AC191/3A CD54ACT191/3A Presettable Synchronous 4-Bit Binary Up/Down Counters Functional Diagram ACT INPUT LOAD TABLE INPUT UNIT LOAD (NOTE 1) P0 - P3, PL 0.75 CL, U/D, CE 0.85 NOTE: 1. Unit load is ∆I CC limit specified in DC Electrical Specifications Table, e.g., 2.4mA Max at +25oC. ASYN. PARALLEL CLOCK UP/DOWN 11 14 5 15 1 10 9 3 2 6 7 12 Q0 Q1 Q2 Q3 TERMINAL P0 P1 P2 P3 BINARY PRESET COUNT 4 13 RIPPLE CLOCK ENABLE LOAD ENABLE COUNT BINARY OUTPUTS June 1997 File Number 3896 Description The CD54AC191/3A and CD54ACT191/3A are asynchro- nously presettable binary up/down synchronous counters that utilize the Harris Advanced CMOS Logic technology. Presetting the counter to the number on preset data inputs (P0-P3) is accomplished by setting LOW the asynchronous parallel load input (PL). Counting occurs when PL is HIGH. Count Enable (CE) is LOW, and the Up/Down (U/D) input is either LOW for up-counting or HIGH for down-counting. The counter is incremented or decremented synchronously with the LOW-to-HIGH transition of the clock. When an overflow or underflow of the counter occurs, the Terminal Count (TC) output, which is LOW during counting, goes HIGH and remains HIGH for one clock cycle. This output can be used for look-ahead carry in high-speed cascading. The TC output also initiates the Ripple Clock (RC) output which, normally HIGH, goes LOW and remains LOW for the low-level portion of the clock pulse. These counters can be cascaded using the Ripple Count output. The CD54AC191/3A and CD54ACT191/3A are supplied in 16-lead dual-in-line ceramic packages (F suffix). Absolute Maximum Ratings DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6V DC Input Diode Current, IIK For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA DC Output Diode Current, IOK For VO < -0.5V or VO > VCC + 0.5V. . . . . . . . . . . . . . . . . . . . .±50mA DC Output Source or Sink Current, Per Output Pin, IO For VO > -0.5V or VO < VCC + 0.5V. . . . . . . . . . . . . . . . . . . . .±50mA DC VCC or GND Current, ICC or IGND For Up to 4 Outputs Per Device, Add ±25mA For Each Additional Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±100mA Power Dissipation Per Package, PD TA = -55 oC to +100oC (Package F) . . . . . . . . . . . . . . . . . . 500mW TA = +100 oC to +125oC (Package F) . . . . . . . . Derate Linearly at 8mW/oC to 300mW Operating Temperature Range, TA Package Type F . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to +125oC Storage Temperature, TSTG . . . . . . . . . . . . . . . . . . -65 oC to +150oC Lead Temperature (During Soldering) At Distance 1/16in. ± 1/32in. (1.59mm ± 0.79mm) From Case For 10s Max . . . . . . . . . . . . . . . . . . . . . . . . . . +265oC Unit Inserted Into a PC Board (Min Thickness 1/16in., 1.59mm) With Solder Contacting Lead Tips Only. . . . . . . . . . . . . . . +300oC CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Recommended Operating Conditions Supply Voltage Range, VCC Unless Otherwise Specified, All Voltages Referenced to GND TA = Full Package Temperature Range CD54AC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5V to 5.5V CD54ACT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V DC Input or Output Voltage, VI, VO. . . . . . . . . . . . . . . . . . 0V to VCC Operating Temperature, TA . . . . . . . . . . . . . . . . . . . -55 oC to +125oC Input Rise and Fall Slew Rate, dt/dv at 1.5V to 3V (AC Types) . . . . . . . . . . . . . . . . . . . 0ns/V to 50ns/V at 3.6V to 5.5V (AC Types) . . . . . . . . . . . . . . . . . 0ns/V to 20ns/V at 4.5V to 5.5V (AC Types) . . . . . . . . . . . . . . . . . 0ns/V to 10ns/V COMING SOON! COMPLETE DATA SHEET |
Similar Part No. - CD54ACT191 |
|
Similar Description - CD54ACT191 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |