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TI - SA555 (ACTIVE) 精密定时器 - 时钟与计时器 按功能归类的时钟 定时器

SA555 (ACTIVE) 精密定时器 此图片只做参考用
真图请以实物为准
库存状况
  • 库存数量: 95
  • 包装规格:
  • 最小订单量:1
  • 多重订单量:1
  • 单位价格(不含税):CNY 0.60
数量:
价格
    数量单位价格(不含税)
    1-24CNY 0.60
    25-49CNY 0.57
    50-99CNY 0.54
    100-249CNY 0.51
  • 制造商:TI
  • 库存编号:1616815
  • 商品型号:SA555DR
  • RoHS胁从产品:
  • 备注:
  • 产品描述:These devices are precision timing circuits capable of producing accurate time delays or oscillation.

These devices are precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor.

The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC. These levels can be altered by use of the control-voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set, and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low. The reset (RESET) input can override all other inputs and can be used to initiate a new timing cycle. When RESET goes low, the flip-flop is reset, and the output goes low. When the output is low, a low-impedance path is provided between discharge (DISCH) and ground.

The output circuit is capable of sinking or sourcing current up to 200 mA. Operation is specified for supplies of 5 V to 15 V. With a 5-V supply, output levels are compatible with TTL inputs.

特性

 

  • Timing From Microseconds to Hours
  • Astable or Monostable Operation
  • Adjustable Duty Cycle
  • TTL-Compatible Output Can Sink or Source up to 200 mA
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