器件名称:
CD54HC4020
功能描述:
High-Speed CMOS Logic 14-Stage Binary Counter
文件大小:
269.58KB 共13页
简 介:
CD54HC4020, CD74HC4020, CD54HCT4020, CD74HCT4020 Data sheet acquired from Harris Semiconductor SCHS201C February 1998 - Revised October 2003 High-Speed CMOS Logic 14-Stage Binary Counter Description The ’HC4020 and ’HCT4020 are 14-stage ripple-carry binary counters. All counter stages are master-slave ipops. The state of the stage advances one count on the negative clock transition of each input pulse; a high voltage level on the MR line resets all counters to their zero state. All inputs and outputs are buffered. Features Fully Static Operation [ /Title (CD74 HC402 0, CD74 HCT40 20) /Subject (High Speed CMOS Buffered Inputs Common Reset Negative Edge Clocking 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 Signicant 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) - CMOS Input Compatibility, Il ≤ 1A at VOL, VOH Ordering Information PART NUMBER CD54HC4020F3A CD54HCT4020F3A CD74HC4020E CD74HC4020M CD74HC4020MT CD74HC4020M96 CD74HCT4020E CD74HCT4020M CD74HCT4020MT CD74HCT4020M96 TEMP. RANGE (oC) -55 to 125 -55 to 125 -55 to 125 -55 to 125 -55 to 125 -55 to 125 ……
