NE555N datasheet(5/20 Pages) STMICROELECTRONICS

5 / 20 page

NE555 - SA555 - SE555

Electrical characteristics

Doc ID 2182 Rev 6

5/20

VOH

High level output voltage

VCC = +15 VIO(sink) = 200 mA

IO(sink) = 100 mA

VCC = +5 V IO(sink) = 100 mA

12.5

13.3

3.3

12.7

2.75

12.5

13.3

3.3

Idis(off)

Discharge pin leakage current

(output high) Vdis = 10 V

100

Vdis(sat)

Discharge pin saturation voltage

(output low) (4)

VCC = +15V, Idis = 15 mA

VCC = +5V, Idis = 4.5 mA

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 15 V operation. The maximum total (RA + RB) is 20 MΩ for +15 V

operation and 3.5 M

Ω for +5 V operation.

Specified with trigger input high.

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

Time measured from a positive pulse (from 0 V to 0.8 x VCC) on the threshold pin to the transition from high to low on the

output pin. Trigger is tied to threshold.

Table 3.

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

Symbol

Parameter

SE555

NE555 - SA555

Unit

Min.

Typ.

Max.

Min.

Typ.

Max.

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