NE556 datasheet(5/16 Pages) STMICROELECTRONICS

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NE556 - SA556 - SE556

Electrical characteristics

5/16

Idis(off)

Discharge pin leakage current (output high)

(Vdis = 10V)

100

Vdis(sat)

Discharge pin saturation voltage (output low) (4)

VCC = +15V, Idis = 15mA

VCC = +5V, Idis = 4.5mA

180

480

200

180

480

200

Output rise time

Output fall time

100

200

100

300

toff

Turn-off time (5) (Vreset = VCC)0.5

0.5

µs

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

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 M

Specified with trigger input high

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

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.

Table 3.

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

Symbol

Parameter

SE556

NE556 - SA556

Unit

Min.

Typ.

Max.

Min.

Typ.

Max.

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