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555

PRECISION TIMERS

Diodes Incorporated. 

NE555/SA555/NA555

PRECISION TIMERS

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

Symbol

VCC

VI

IO

θJA

θJC

TJ

TSTG

Parameter

Supply voltage (Note 3)

Input voltage

CONT, RESET, THRES, TRIG

Output current

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

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

Junction temperature

Storage temperature

Rating

18

VCC

±225

130

15

150

-65 to 150

Unit

V

V

mA

°C/W

°C/W

°C

°C

Recommended Operating Conditions (TA = 25°C)

Symbol

VCC

VI

IO

TA

Parameter

Supply voltage

Input voltage

CONT, RESET, THRES, TRIG

Output current

NE555

Operating Ambient Temperature SA555

NA555

Min

Max

Unit

4.5

16

V

VCC

V

±200

mA

0

70

-40

85

°C

-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

VTH

ITH

VTR

ITR

VRST

IRST

IDIS

VDIS

Threshold voltage level

Threshold current (Note 6)

Trigger voltage level

Trigger current

RESET voltage level

RESET current

DISCH switch off-state current

DISCH saturation voltage with

output low (Note 7)

VCON

CONT voltage (open circuit)

Test conditions

VCC = 15V

VCC = 5V

VCC = 15V

VCC = 5V

TRIG at 0V

RESET at VCC

RESET at 0V

VCC = 15V, IDIS = 15mA

VCC = 5V, IDIS = 4.5mA

VCC = 15V

VCC = 5V

Min Typ. Max Unit

8.8

10 11.2

V

2.4 3.3 4.2

30 250 nA

4.5

5

5.6

V

1.1 1.67 2.2

0.5

2

µA

0.3 0.7

1

V

0.1 0.4

mA

-0.4 -1.5

20 100 nA

180 480

mV

80 200

9

10

11

V

2.6 3.3

4

NE555/SA555/NA555

Document number: DS35112 Rev. 4 - 2

3 of 14

www.diodes.com

February 2012

© Diodes Incorporated

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