NE556 查看數據表（PDF） - STMicroelectronics

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产品描述 (功能)

比赛名单

NE556

General-purpose dual bipolar timers

STMicroelectronics 

NE556 - SA556 - SE556

Electrical characteristics

Table 3.

Symbol

Tamb = +25° C, VCC = +5 V to +15 V (unless otherwise specified) (continued)

Parameter

SE556

NE556 - SA556

Unit

Min. Typ. Max. Min. Typ. Max.

Idis(off)

Vdis(sat)

Discharge pin leakage current (output high)

(Vdis = 10V)

Discharge pin saturation voltage (output low) (4)

VCC = +15V, Idis = 15mA

VCC = +5V, Idis = 4.5mA

20 100

180 480

80 200

20 100

nA

180 480 mV

80 200

tr

Output rise time

tf

Output fall time

toff Turn-off time (5) (Vreset = VCC)

100 200

100 200

0.5

100 300

ns

100 300

0.5

µs

1. Tested at VCC = +5 V and VCC = +15 V

2. This will determine the maximum value of RA + RB for +15V operation the max total is R = 20 MΩ and for +5 V operation

the max total R = 3.5 MΩ

3. Specified with trigger input high

4. No protection against excessive pin 7 current is necessary, providing the package dissipation rating will not be exceeded

5. Time measured from a positive going input pulse from 0 to 0.8 x VCC into the threshold to the drop from high to low of the

output trigger is tied to threshold.

5/16

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