深圳市汇创佳电子科技有限公司

数据列表NE555, SA555, NA555;

标准包装  2,500

包装  标准卷带 

零件状态   在售

类别   集成电路（IC）

产品族   时钟/计时 - 可编程计时器和振荡器系列-

规格类型555 型，计时器/振荡器（单路）计数-频率500kHz电压 - 电源4.5V ~ 16V电流 - 电源13mA工作温度-40°C ~ 85°C封装/外壳8-SOIC（0.154"，3.90mm 宽）供应商器件封装8-SO安装类型表面贴装

Description

These devices are precision timing circuits capable of

producing accurate time delays or oscillation. In the timedelay

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 lowimpedance

path is provided between discharge (DISCH) and

ground.

The output circuit is capable of sinking or sourcing current up

to 200mA. Operation is specified for supplies of 5V to 15V.

With a 5-V supply, output levels are compatible with TTL

inputs.