器件名称:
M74HC166
功能描述:
8 BIT PISO SHIFT REGISTER
文件大小:
506.93KB 共12页
简 介:
M74HC166 8 BIT PISO SHIFT REGISTER s s s s s s s HIGH SPEED : fMAX = 63 MHz (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC =4A(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 166 DIP SOP TSSOP ORDER CODES PACKAGE DIP SOP TSSOP TUBE M74HC166B1R M74HC166M1R T&R M74HC166RM13TR M74HC166TTR 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 di……
