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M74HC4022 데이터시트(PDF) 1 Page - STMicroelectronics |
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1 / 12 page M54HC4022 M74HC4022 October 1992 OCTAL COUNTER/DIVIDER B1R (Plastic Package) ORDER CODES : M54HC4022F1R M74HC4022M1R M74HC4022B1R M74HC4022C1R F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) PIN CONNECTIONS (top view) NC = No Internal Connection DESCRIPTION . HIGH SPEED fMAX = 57 MHz (TYP.) at VCC =5 V . LOW POWER DISSIPATION ICC 4 µA (MAX.) at TA =25 °C . HIGH NOISE IMMUNITY VNIH =VNIL =28 % VCC (MIN.) . OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS . SYMMETRICAL OUTPUT IMPEDANCE |IOH|= IOL = 4 mA (MIN.) . BALANCED PROPAGATION DELAYS tPLH =tPHL . WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V to 6 V . PIN AND FUNCTION COMPATIBLE WITH 4022B The M54/74HC4022 is a high speed CMOS OCTAL COUNTER/DIVIDER fabricated in silicon gate C 2MOS technology. It has the same high speed performance of LSTTL combined with true CMOS low power consumption. It contains a 4-stage divide-by-8 Johnson counter with 8 decoded outputs (Q0-Q7) and a Carry-out bit. This counter is advanced on the positive edge of the clock signal when CLOCK ENABLE input is held low, or is advanced on the negative edge of clock enable signal when CLOCK input is held high, and the selected one of eight outputs goes high. Holding the CLEAR input high clears the counter to zero re- gardless of the other input conditions. All inputs are equipped with protection circuits against static dis- charge and transient excess voltage. 1/12 |
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