Texas Instruments CD54HC166F3A
The ’HC166 and ’HCT166 8-bit shift register is fabricated with silicon gate CMOS technology. It possesses the low power consumption of standard CMOS integrated circuits, and can operate at speeds comparable to the equivalent low power Schottky device.FEATURES
DESCRIPTION
● Buffered Inputs● Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
● Wide Operating Temperature Range . . . -55oC to 125oC
● Balanced Propagation Delay and Transition Times
● Significant Power Reduction Compared to LSTTL Logic ICs
● HC Types - 2V to 6V Operation - High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
● HCT Types - 4.5V to 5.5V Operation - Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH = 2V (Min) Pinout CD54HC166, CD54HCT166 (CERDIP) CD74HC166, CD74HCT166 (PDIP, SOIC) TOP VIEW DS 1 D0 2 D1 3 D2 4 D3 5 CE 6 CP 7 GND 8 16 VCC 15 PE 14 D7 13 Q7 12 D6 11 D5 10 D4 9 MR The ’HCT166 is functionally and pin compatible with the standard ’LS166. The 166 is an 8-bit shift register that has fully synchronous serial or parallel data entry selected by an active LOW Parallel Enable (PE) input. When the PE is LOW one setup time before the LOW-to-HIGH clock transition, parallel data is entered into the register.