SA555 datasheet(3/14 Pages) DIODES

3 / 14 page

NE555/SA555/NA555

PRECISION TIMERS

NE555/SA555/NA555

Document number: DS35112 Rev. 4 - 2

3 of 14

www.diodes.com

February 2012

Absolute Maximum Ratings (Note 2) @ TA = 25°C unless otherwise stated

Symbol

Parameter

Rating

Unit

VCC

Supply voltage (Note 3)

Input voltage

CONT, RESET, THRES, TRIG

VCC

Output current

±225

θJA

Package thermal resistance Junction-to-Ambient (Note 4)

130

°C/W

θJC

Package thermal resistance Junction-to-Case (Note 5)

°C/W

Junction temperature

150

°C

TSTG

Storage temperature

-65 to 150

°C

Recommended Operating Conditions (TA = 25°C)

Symbol

Parameter

Min

Max

Unit

VCC

Supply voltage

4.5

Input voltage

CONT, RESET, THRES, TRIG

VCC

Output current

±200

Operating Ambient Temperature

NE555

°C

SA555

-40

NA555

-40

105

Notes:

2. Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only.

Functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions"

is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

3. All voltage values are with respect ground.

4. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature

is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.

5. Maximum power dissipation is a function of TJ(max), θJC, and TA. The maximum allowable power dissipation at any allowable ambient temperature

is PD = (TJ(max) – TC)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.

Electrical Characteristics (VCC = 5V to 15V, TA = 25°C unless otherwise stated)

Symbol

Parameter

Test conditions

Min

Typ.

Max

Unit

VTH

Threshold voltage level

VCC = 15V

8.8

11.2

VCC = 5V

2.4

3.3

4.2

ITH

Threshold current (Note 6)

250

VTR

Trigger voltage level

VCC = 15V

4.5

5.6

VCC = 5V

1.1

1.67

2.2

ITR

Trigger current

TRIG at 0V

0.5

µA

VRST

RESET voltage level

0.3

0.7

IRST

RESET current

RESET at VCC

0.1

0.4

RESET at 0V

-0.4

-1.5

IDIS

DISCH switch off-state current

100

VDIS

DISCH saturation voltage with

output low (Note 7)

VCC = 15V, IDIS = 15mA

180

480

VCC = 5V, IDIS = 4.5mA

200

VCON

CONT voltage (open circuit)

VCC = 15V

VCC = 5V

2.6

3.3

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