NE555/SA555/NA555

Document number: DS35112 Rev. 5 - 2

3 of 14

www.diodes.com

February 2021

© Diodes Incorporated

NE555

Absolute Maximum Ratings (Note 4) @ TA= 25°C unless otherwise stated

Symbol

Parameter

Rating

Unit

VCC

Supply voltage (Note 5)

18

V

VI

Input voltage

CONT, RESET, THRES, TRIG

VCC

V

IO

Output current

±225

mA

θJA

Package thermal resistance Junction-to-Ambient (Note 6)

130

°C/W

θJC

Package thermal resistance Junction-to-Case (Note 7)

15

°C/W

TJ

Junction temperature

150

°C

TSTG

Storage temperature

-65 to 150

°C

Notes:

4. 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.

5. All voltage values are with respect ground.

6. 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.

7. 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.

Recommended Operating Conditions (TA= 25°C)

Symbol

Parameter

Min

Max

Unit

VCC

Supply voltage

4.5

16

V

VI

Input voltage

CONT, RESET, THRES, TRIG

—

VCC

V

IO

Output current

—

±200

mA

TA

Operating Ambient Temperature

NE555

0

70

°C

SA555

-40

85

NA555

-40

105

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

10

11.2

V

VCC = 5V

2.4

3.3

4.2

ITH

Threshold current (Note 8)

—

—

30

250

nA

VTR

Trigger voltage level

VCC = 15V

4.5

5

5.6

V

VCC = 5V

1.1

1.67

2.2

ITR

Trigger current

TRIG at 0V

—

0.5

2

µA

VRST

RESET voltage level

—

0.3

0.7

1

V

IRST

RESET current

RESET at VCC

—

0.1

0.4

mA

RESET at 0V

—

-0.4

-1.5

IDIS

DISCH switch off-state current

—

—

20

100

nA

VDIS

DISCH saturation voltage with output

low (Note 9)

VCC = 15V, IDIS = 15mA

—

180

480

mV

VCC = 5V, IDIS = 4.5mA

—

80

200

VCON

CONT voltage (open circuit)

VCC = 15V

9

10

11

V

VCC = 5V

2.6

3.3

4

Notes:

8. This parameter influences the maximum value of the timing resistors RA and RB in the circuit of Figure 12. For example, when VCC = 5 V, the

maximum value is R = RA + RB

≉3.4MΩ,andforVCC=15V,themaximumvalueis10MΩ.

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