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