TI NE556N Dual precision timer Datasheet

NE556, SA556, SE556
DUAL PRECISION TIMERS
SLFS023C – APRIL 1978 – REVISED DECEMBER 1999
D
D
D
D
D
D
NE556, SA556 . . . D, OR N PACKAGE
SE556 . . . J PACKAGE
(TOP VIEW)
Two Precision Timing Circuits per Package
Astable or Monostable Operation
TTL-Compatible Output Can Sink or Source
Up to 150 mA
Active Pullup or Pulldown
Designed to be Interchangeable With
Signetics NE556, SA556, and SE556
Applications Include:
– Precision Timers From Microseconds to
Hours
– Pulse-Shaping CIrcuits
– Missing-Pulse Detectors
– Tone-Burst Generators
– Pulse-Width Modulators
– Pulse-Position Modulators
– Sequential Timers
– Pulse Generators
– Frequency Dividers
– Application Timers
– Industrial Controls
– Touch-Tone Encoders
1DISCH
1THRES
1CONT
1RESET
1OUT
1TRIG
GND
1
14
2
13
3
12
4
11
5
10
6
9
7
8
VCC
2DISCH
2THRES
2CONT
2RESET
2OUT
2TRIG
description
These devices provide two independent timing circuits of the NE555, SA555, or SE555 type in each package.
These circuits can be operated in the astable or the monostable mode with external resistor-capacitor (RC)
timing control. The basic timing provided by the RC time constant can be controlled actively by modulating the
bias of the control-voltage input.
The threshold (THRES) and trigger (TRIG) levels are normally two-thirds and one-third, respectively, of VCC.
These levels can be altered by using the control-voltage (CONT) terminal. When the trigger input falls below
trigger level, the flip-flop is set and the output goes high. If the trigger input is above the trigger level and the
threshold input is above the threshold level, the flip-flop is reset and the output is low. The reset (RESET) input
can override all other inputs and can be used to initiate a new timing cycle. When the reset input goes low, the
flip-flop is reset and the output goes low. When the output is low, a low-impedance path is provided between
the discharge (DISCH) terminal and ground (GND).
The NE556 is characterized for operation from 0°C to 70°C. The SA556 is characterized for operation from
–40°C to 85°C, and the SE556 is characterized for operation over the full military range of –55°C to 125°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
TA
VT (MAX)
VCC = 15 V
SMALL OUTLINE
(D)
CERAMIC DIP
(J)
PLASTIC DIP
(N)
0°C to 70°C
11.2 V
NE556D
–
NE556N
–40°C to 85°C
11.2 V
SA556D
–
SA556N
–55°C to 125°C
10.6 V
–
SE556J
–
The D package is available taped and reeled. Add the suffix R to the device type (e.g., NE556DR).
Copyright  1999, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
NE556, SA556, SE556
DUAL PRECISION TIMERS
SLFS023C – APRIL 1978 – REVISED DECEMBER 1999
FUNCTION TABLE
(each timer)
RESET
TRIGGER VOLTAGE†
THRESHOLD VOLTAGE†
OUTPUT
DISCHARGE SWITCH
On
Low
Irrelevant
Irrelevant
Low
High
< 1/3 VDD
Irrelevant
High
Off
High
> 1/3 VDD
> 2/3 VDD
Low
On
High
> 1/3 VDD
† Voltage levels shown are nominal.
> 2/3 VDD
As previously established
functional block diagram, each timer
VCC
RESET
R
R1
THRES
R
CONT
OUT
1
S
R
TRIG
R
DISCH
GND
RESET can override TRIG, which can override THRES.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡
Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V
Input voltage (CONT, RESET, THRES, and TRIG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC
Output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 225 mA
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80°C/W
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J package . . . . . . . . . . . . . . . . . . . . . 300°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D or N package . . . . . . . . . . . . . . . . 260°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
‡ Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
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.
NOTES: 1. All voltage values are with respect to network ground terminal.
2. The package thermal impedance is calculated in accordance with JESD 51.
DISSIPATION RATING TABLE
PACKAGE
J
2
TA ≤ 25°C
POWER RATING
1375 mW
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
TA = 125°C
POWER RATING
880 mW
715 mW
275 mW
11.0 mW/°C
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
NE556, SA556, SE556
DUAL PRECISION TIMERS
SLFS023C – APRIL 1978 – REVISED DECEMBER 1999
recommended operating conditions
Supply voltage
voltage, VCC
MIN
MAX
NE556, SA556
4.5
16
SE556
4.5
18
Input voltage (CONT, RESET, THRES, and TRIG), VI
VCC
± 200
Output current, IO
Operating free-air temperature, TA
NE556
0
70
SA556
–40
85
SE556
–55
125
UNIT
V
V
mA
°C
electrical characteristics, VCC = 5 V to 15 V, TA = 25°C (unless otherwise noted)
PARAMETER
VT
Threshold voltage level
IT
Threshold current (see Note 3)
TEST CONDITIONS
MAX
MIN
TYP
MAX
VCC = 15 V
VCC = 5 V
8.8
10
11.2
9.4
10
10.6
2.4
3.3
4.2
2.7
3.3
4
30
250
30
250
4.5
5
5.6
4.8
5
5.2
1.1
1.67
2.2
1.45
1.67
1.9
0.5
2
0.5
0.9
µA
0.7
1
0.7
1
V
Trigger voltage level
ITRIG
VRESET
Trigger current
TRIG at 0 V
IRESET
Reset current
IDISCH
Discharge switch off-state
current
VCONT
Control voltage (open circuit)
Reset voltage level
0.3
RESET at VCC
VCC = 15 V
VCC = 5 V
Low level output voltage
Low-level
0.4
0.1
0.4
1.5
–0.4
–1
20
100
20
100
9
10
11
9.6
10
10.4
2.6
3.3
4
2.9
3.3
3.8
0.1
0.25
0.1
0.15
0.4
0.75
0.4
0.5
2
2.5
2
2.2
IOL = 10 mA
IOL = 50 mA
IOL = 100 mA
IOL = 200 mA
2.5
IOL = 5 mA
IOL = 8 mA
VCC = 15 V
IOH = – 100 mA
IOH = – 200 mA
12.75
IOH = – 100 mA
VCC = 15 V
2.75
Output low,,
No Load
ICC
0.1
VCC = 5 V
VCC = 5 V
Supply current
Output high,
g
No load
0.3
–0.4
RESET at 0 V
VCC = 15 V
High-level output voltage
UNIT
TYP
VTRIG
VOH
SE556
MIN
VCC = 15 V
VCC = 5 V
VOL
NE556, SA556
2.5
0.1
0.25
0.1
0.15
0.15
0.3
0.15
0.25
13.3
13
12.5
VCC = 5 V
VCC = 15 V
3
nA
V
mA
nA
V
V
13.3
V
12.5
3.3
V
3.3
20
30
20
24
6
12
6
10
18
26
18
20
mA
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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
NE556, SA556, SE556
DUAL PRECISION TIMERS
SLFS023C – APRIL 1978 – REVISED DECEMBER 1999
operating characteristics, VCC = 5 V and 15 V
Each timer, monostable§
Each timer, astable¶
Initial error of timing
g interval‡
NE556, SA556
TEST
CONDITIONS†
PARAMETER
MIN
TA = 25°C
MAX
1
3
Temperature
T
t
coefficient
ffi i t off
timing interval
Supply
S
l voltage
lt
sensitivity
iti it off
timing interval
MIN
MAX
0.5
1.5
1.5%
±1
±0.5
50
30
150
90
TA = MIN to MAX
Timer 1 — Timer 2
±10
Each timer, monostable§
Each timer, astable¶
0.1
TA = 25°C
0.05
0.15
±0.2
100
UNIT
100
ppm/°C
±10
0.5
0.3
Timer 1 — Timer 2
Output pulse rise time
TYP
2.25%
Timer 1 — Timer 2
Each timer, monostable§
Each timer, astable¶
SE556
TYP
0.2
%/ V
±0.1
100
200
ns
Output pulse fall time
100
300
100
200
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡ Timing interval error is defined as the difference between the measured value and the average value of a random sample from each process
run.
§ Values specified are for a device in a monostable circuit similar to Figure 2, with component values as follow: RA = 2 kΩ to 100 kΩ, C = 0.1µF.
¶ Values specified are for a device in an astable circuit similar to Figure 1, with component values as follow: RA = 1 kΩ to 100 kΩ, C = 0.1µF.
CL = 15 pF,
TA = 25°C
300
APPLICATION INFORMATION
VCC
(5 V to 15 V)
VCC
(5 V to 15 V)
Open
(see Note A)
CONT
RA
0.01 µF
VCC
RESET
RL
DISCH
OUT
RB
CONT
RA
OUT
THRES
TRIG
RL
DISCH
GND
OUT
OUT
THRES
C
TRIG
INPUT
Figure 1. Circuit for Astable Operation
POST OFFICE BOX 655303
GND
C
NOTE A: Bypassing the control-voltage input to ground with
a capacitor may improve operation. This should be
evaluated for individual applications.
4
VCC
RESET
Figure 2. Circuit for Monostable Operation
• DALLAS, TEXAS 75265
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Copyright  1999, Texas Instruments Incorporated