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Datasheet File OCR Text: |
SEMICONDUCTOR CD54AC273/3A CD54ACT273/3A Octal D Flip-Flop with Reset Functional Diagram CLOCK CP D0 D1 D2 DATA INPUTS D3 D4 D5 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 DATA OUTPUTS June 1997 COMPLETE DATA SHEET COMING SOON! Description The CD54AC273/3A and CD54ACT273/3A are octal D flipflops with reset that utilize the Harris Advanced CMOS Logic technology. Information at the D input is transferred to the Q output on the positive-going edge of the clock pulse. All eight flip-flops are controlled by a common clock (CP) and a common reset (MR). Resetting is accomplished by a low-voltage level independent of the clock. The CD54AC273/3A and CD54ACT273/3A are supplied in 20 lead dual-in-line ceramic packages (F suffix). ACT INPUT LOAD TABLE D6 INPUT Dn MR CP NOTE: UNIT LOAD (NOTE 1) D7 0.5 0.57 RESET MR 1 1. Unit load is ICC limit specified in DC Electrical Specifications Table, e.g., 2.4mA Max at +25oC. 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 = -55oC to +100oC (Package F) . . . . . . . . . . . . . . . . . . 500mW TA = +100oC to +125oC (Package F) . . . . . . . . Derate Linearly at 8mW/ oC to 300mW Operating Temperature Range, TA Package Type F . . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to +125oC Storage Temperature, TSTG . . . . . . . . . . . . . . . . . . -65oC 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 . . . . . . . . . . . . . . . . . . . -55oC 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 CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures. Copyright (c) Harris Corporation 1994 File Number 3904 1 |
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