NE556, SA556, SE556
DUAL PRECISION TIMERS
SLFS023C – APRIL 1978 – REVISED DECEMBER 1999
recommended operating conditions
MIN
Supply voltage VCC
voltage,
Input voltage (CONT, RESET, THRES, and TRIG), VI
Output current, IO
NE556
Operating free-air temperature, TA
SA556
SE556
0
–40
–55
NE556, SA556
SE556
4.5
4.5
MAX
16
18
VCC
±
200
70
85
125
°C
UNIT
V
V
mA
electrical characteristics
, V
CC
= 5 V to 15 V, T
A
=
25
°C
(unless otherwise noted)
PARAMETER
VT
IT
VTRIG
ITRIG
VRESET
IRESET
IDISCH
VCONT
Threshold voltage level
Threshold current (see Note 3)
Trigger voltage level
Trigger current
Reset voltage level
Reset current
Discharge switch off-state
current
Control voltage (open circuit)
VCC = 15 V
VCC = 5 V
IOL = 10 mA
IOL = 50 mA
IOL = 100 mA
IOL = 200 mA
IOL = 5 mA
IOL = 8 mA
IOH = – 100 mA
IOH = – 200 mA
IOH = – 100 mA
VCC = 15 V
VCC = 5 V
VCC = 15 V
12.75
2.75
9
2.6
RESET at VCC
RESET at 0 V
VCC = 15 V
VCC = 5 V
TRIG at 0 V
0.3
4.5
1.1
TEST CONDITIONS
VCC = 15 V
VCC = 5 V
NE556, SA556
MIN
8.8
2.4
TYP
10
3.3
30
5
1.67
0.5
0.7
0.1
–0.4
20
10
3.3
0.1
0.4
2
2.5
0.1
0.15
13.3
12.5
3.3
20
6
18
30
12
26
3
0.25
0.3
13
MAX
11.2
4.2
250
5.6
2.2
2
1
0.4
1.5
100
11
4
0.25
0.75
2.5
9.6
2.9
0.3
4.8
1.45
MIN
9.4
2.7
SE556
TYP
10
3.3
30
5
1.67
0.5
0.7
0.1
–0.4
20
10
3.3
0.1
0.4
2
2.5
0.1
0.15
13.3
12.5
3.3
20
6
18
24
10
20
mA
V
0.15
0.25
MAX
10.6
4
250
5.2
1.9
0.9
1
0.4
–1
100
10.4
3.8
0.15
0.5
2.2
V
UNIT
V
nA
V
µA
V
mA
nA
V
VCC = 15 V
VOL
Low level output voltage
Low-level
VCC = 5 V
VCC = 15 V
VCC = 5 V
Output low,
,
No Load
ICC
Supply current
Output high,
g
No load
VOH
High-level output voltage
nA
VCC = 5 V
4
10
4
8
NOTE 3: This parameter influences the maximum value of the timing resistors RA 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.
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