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M54HC574 Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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M54HC574 Scheda tecnica(HTML) 1 Page - STMicroelectronics |
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1 / 13 page ![]() M54/74HC564 M54/74HC574 March 1993 HC564 INVERTING - HC574 NON INVERTING OCTAL D-TYPE FLIP FLOP WITH 3 STATE OUTPUT B1R (Plastic Package) ORDER CODES : M54HCXXXF1R M74HCXXXM1R M74HCXXXB1R M74HCXXXC1R F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) PIN CONNECTION (top view) . HIGH SPEED fMAX = 62 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 15 LSTTL LOADS . SYMMETRICAL OUTPUT IMPEDANCE IOL = IOH= 6 mA (MIN.) . BALANCED PROPAGATION DELAYS tPLH =tPHL . WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V . PIN AND FUNCTION COMPATIBLE WITH 54/74LS564/574 DESCRIPTION The M54/74HC564 and M54HC574 are high speed CMOS OCTAL D-TYPE FLIP FLOP WITH 3-STATE OUTPUTS fabricated with in silicon gate C 2MOS technology. They have the same high speed per- formance of LSTTL combined with true CMOS low power comsuption. These8-bit D-type flip-flops are controlled by a clock input (CK) and an ouput enable input (OE). On the positive transition of the clock, the Q outputs will be set to the logic state that were setup at the D inputs (HC574) or their complements (HC564). While the OE input is low, the eight outputs will be in a normal logic state (high or low logic level), and while high level, the outputs will be in a high imped- ance state. The output control does not affect the in- ternal operation of flip-flops. That is, the old data can be retained or the new data can be entered even while the outputs are off. The application engineer has a choice of combination of inverting and non-in- verting outputs. The 3-state output configuration and the wide choice of outline make bus-organized systems simple. All inputs are equipped with protec- tion circuits against static discharge and transient excess voltage. 1/13 |
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