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Function General-purpose timer Iq (typ) (mA) 5 Rating Space Operating temperature range (°C) -55 to 125 Supply voltage (max) (V) 16.5 Supply voltage (min) (V) 4.5
Function General-purpose timer Iq (typ) (mA) 5 Rating Space Operating temperature range (°C) -55 to 125 Supply voltage (max) (V) 16.5 Supply voltage (min) (V) 4.5
CDIP (JG) 8 64.032 mm² 9.6 x 6.67
  • Timing From Microseconds to Hours
  • Astable or Monostable Operation
  • Adjustable Duty Cycle
  • TTL-Compatible Output Can Sink or Source up to 100 mA
  • QML-V Qualified, SMD 5962-98555
  • Military Temperature Range (–55°C to 125°C)
  • Rad-Tolerant: 25 kRad (Si) TID(1)

(1) Radiation tolerance is a typical value based upon initial device qualification with dose rate = 10 mrad/sec. Radiation Lot Acceptance Testing is available - contact factory for details.

  • Timing From Microseconds to Hours
  • Astable or Monostable Operation
  • Adjustable Duty Cycle
  • TTL-Compatible Output Can Sink or Source up to 100 mA
  • QML-V Qualified, SMD 5962-98555
  • Military Temperature Range (–55°C to 125°C)
  • Rad-Tolerant: 25 kRad (Si) TID(1)

(1) Radiation tolerance is a typical value based upon initial device qualification with dose rate = 10 mrad/sec. Radiation Lot Acceptance Testing is available - contact factory for details.

The SE555 is a precision timing circuit 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 100 mA. Operation is specified for supplies of 4.5 V to 16.5 V. With a 5-V supply, output levels are compatible with TTL inputs.

The SE555 is a precision timing circuit 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 100 mA. Operation is specified for supplies of 4.5 V to 16.5 V. With a 5-V supply, output levels are compatible with TTL inputs.

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类型 标题 下载最新的英语版本 日期
* 数据表 Precision Timer. 数据表 2010年 2月 4日
* SMD SE555-SP SMD 5962-98555 2016年 7月 8日
* 辐射与可靠性报告 SE555 ELDRS Report 2015年 3月 31日
更多文献资料 TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing (Rev. A) 2023年 8月 31日
应用手册 单粒子效应置信区间计算 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2022年 12月 2日
应用手册 重离子轨道环境单粒子效应估算 (Rev. A) PDF | HTML 英语版 (Rev.A) PDF | HTML 2022年 11月 30日
选择指南 TI Space Products (Rev. I) 2022年 3月 3日

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