Datasheet

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Electrical Characteristics
NA556 , NE556 , SA556 , SE556
DUAL PRECISION TIMERS
SLFS023G – APRIL 1978 – REVISED JUNE 2006
V
CC
= 5 V to 15 V, T
A
= 25 ° C (unless otherwise noted)
NA556
NE556 SE556
PARAMETER TEST CONDITIONS UNIT
SA556
MIN TYP MAX MIN TYP MAX
V
CC
= 15 V 8.8 10 11.2 9.4 10 10.6
Threshold voltage
V
T
V
level
V
CC
= 5 V 2.4 3.3 4.2 2.7 3.3 4
I
T
Threshold current
(1)
30 250 30 250 nA
4.5 5 5.6 4.8 5 5.2
V
CC
= 15 V
T
A
= –55 ° C to 125 ° C 3 6
V
TRIG
Trigger voltage level V
1.1 1.67 2.2 1.45 1.67 1.9
V
CC
= 5 V
T
A
= –55 ° C to 125 ° C 1.9
I
TRIG
Trigger current TRIG at 0 V 0.5 2 0.5 0.9 µ A
0.3 0.7 1 0.3 0.7 1
V
RESET
Reset voltage level V
T
A
= –55 ° C to 125 ° C 1.1
RESET at V
CC
0.1 0.4 0.1 0.4
I
RESET
Reset current mA
RESET at 0 V –0.4 1.5 –0.4 –1
Discharge switch
I
DISCH
20 100 20 100 nA
off-state current
9 10 11 9.6 10 10.4
V
CC
= 15 V
T
A
= –55 ° C to 125 ° C 9.6 10.4
Control voltage
V
CONT
V
(open circuit)
2.6 3.3 4 2.9 3.3 3.8
V
CC
= 5 V
T
A
= –55 ° C to 125 ° C 2.9 3.8
0.1 0.25 0.1 0.15
V
CC
= 15 V,
I
OL
= 10 mA
T
A
= –55 ° C to 125 ° C 0.2
0.4 0.75 0.4 0.5
V
CC
= 15 V,
I
OL
= 50 mA
T
A
= –55 ° C to 125 ° C 1
2 2.5 2 2.2
V
CC
= 15 V,
I
OL
= 100 mA
Low-level T
A
= –55 ° C to 125 ° C 2.7
V
OL
V
output voltage
V
CC
= 15 V, I
OL
= 200 mA 2.5 2.5
V
CC
= 5 V,
T
A
= –55 ° C to 125 ° C 0.35
I
OL
= 3.5 mA
0.1 0.25 0.1 0.15
V
CC
= 5 V,
I
OL
= 5 mA
T
A
= –55 ° C to 125 ° C 0.8
V
CC
= 5 V, I
OL
= 8 mA 0.15 0.3 0.15 0.25
12.75 13.3 13 13.3
V
CC
= 15 V,
I
OH
= –100 mA
T
A
= –55 ° C to 125 ° C 12
High-level
V
OH
V
CC
= 15 V, I
OH
= –200 mA 12.5 12.5 V
output voltage
2.75 3.3 3 3.3
V
CC
= 5 V,
I
OH
= –100 mA
T
A
= –55 ° C to 125 ° C 2
V
CC
= 15 V 20 30 20 24
Output low,
No load
V
CC
= 5 V 6 12 6 10
I
CC
Supply current mA
V
CC
= 15 V 18 26 18 20
Output high,
No load
V
CC
= 5 V 4 10 4 8
(1) This parameter influences the maximum value of the timing resistors R and R
B
in the circuit of Figure 1 . For example, when V
CC
= 5 V,
the maximum value is R = R
A
+ R
B
≈ 3.4 M Ω , and for V
CC
= 15 V, the maximum value is ≈ 10 M Ω .
4
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