首页| 行业标准| 论文文档| 电子资料| 图纸模型
购买积分 购买会员 激活码充值

您现在的位置是:团子下载站 > 其他 > CD54HC192,CD74HC192,CD54HC193,

CD54HC192,CD74HC192,CD54HC193,

  • 资源大小:609
  • 上传时间:2021-07-10
  • 下载次数:0次
  • 浏览次数:30次
  • 资源积分:1积分
  • 标      签: COUNTERS

资 源 简 介

The ’HC192, ’HC193 and ’HCT193 are asynchronously presettable BCD Decade and Binary Up/Down synchronous counters, respecTIvely. PresetTIng the counter to the number on the preset data inputs (P0-P3) is accomplished by a LOW asynchronous parallel load input (PL). The counter is incremented on the low-to-high transiTIon of the Clock-Up input (and a high level on the Clock-Down input) and decremented on the low to high transiTIon of the Clock-Down input (and a high level on the Clock-up input). A high level on the MR input overrides any other input to clear the counter to its zero state. The Terminal Count up (carry) goes low half a clock period before the zero count is reached and returns to a high level at the zero count.
VIP VIP