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M74HC166RM13TR Datasheet(PDF) 1 Page - STMicroelectronics |
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M74HC166RM13TR Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 12 page 1/12 July 2001 s HIGH SPEED : fMAX = 63 MHz (TYP.) at VCC = 6V s LOW POWER DISSIPATION: ICC =4µA(MAX.) at TA=25°C s HIGH NOISE IMMUNITY: VNIH = VNIL = 28 % VCC (MIN.) s SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) s BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL s WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V s PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 166 DESCRIPTION The M74HC166 is an high speed CMOS 8 BIT PISO SHIFT REGISTER fabricated with silicon gate C2MOS technology. It consists of parallel or serial inputs and a serial-out 8 bit shift register with gated clock inputs and an overriding clear input. The parallel-in or serial-in modes are controlled by the SHIFT/ LOAD input. When the SHIFT/LOAD input is held high, the serial data input is enabled and the eight flip-flops perform serial shifting with each clock pulse; when held low, the parallel data inputs are enabled and synchronous loading occurs on the next clock pulse. Clocking is accomplished on the low-to-high level edge of the clock pulse. The CLOCK-INHIBIT input should be changed to the high only while the clock input is held high. A direct clear input overrides all other inputs, including the clock, and sets all flip-flops to zero. Functional details are shown in the truth table and the timing chart. All inputs are equipped with protection circuits against static discharge and transient excess voltage. M74HC166 8 BIT PISO SHIFT REGISTER PIN CONNECTION AND IEC LOGIC SYMBOLS ORDER CODES PACKAGE TUBE T & R DIP M74HC166B1R SOP M74HC166M1R M74HC166RM13TR TSSOP M74HC166TTR TSSOP DIP SOP |
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