SE556J [TI]
DUAL PRECISION TIMERS; 双路精密定时器
| 型号： | SE556J |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | DUAL PRECISION TIMERS |
| 文件： | 总5页 (文件大小：73K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NE556, SA556, SE556
DUAL PRECISION TIMERS
SLFS023C – APRIL 1978 – REVISED DECEMBER 1999
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
1DISCH
1THRES
1CONT
1RESET
1OUT
V
1
2
3
4
5
6
7
14
13
12
11
10
9
CC
2DISCH
2THRES
2CONT
2RESET
2OUT
Active Pullup or Pulldown
Designed to be Interchangeable With
Signetics NE556, SA556, and SE556
Applications Include:
– Precision Timers From Microseconds to
Hours
1TRIG
GND
2TRIG
8
– 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
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 V
.
CC
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
V
(MAX)
= 15 V
T
T
A
SMALL OUTLINE
(D)
CERAMIC DIP
(J)
PLASTIC DIP
(N)
V
CC
0°C to 70°C
–40°C to 85°C
–55°C to 125°C
11.2 V
NE556D
SA556D
–
–
–
NE556N
SA556N
–
11.2 V
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
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.
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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
NE556, SA556, SE556
DUAL PRECISION TIMERS
SLFS023C – APRIL 1978 – REVISED DECEMBER 1999
FUNCTION TABLE
(each timer)
†
†
RESET
Low
TRIGGER VOLTAGE
THRESHOLD VOLTAGE
Irrelevant
OUTPUT
Low
DISCHARGE SWITCH
Irrelevant
On
Off
On
High
< 1/3 V
> 1/3 V
> 1/3 V
Irrelevant
High
DD
DD
DD
High
> 2/3 V
Low
DD
DD
High
> 2/3 V
As previously established
†
Voltage levels shown are nominal.
functional block diagram, each timer
V
CC
RESET
R
R
R
R1
THRES
CONT
R
S
1
OUT
TRIG
DISCH
GND
RESET can override TRIG, which can override THRES.
‡
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V
CC
Input voltage (CONT, RESET, THRES, and TRIG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
Output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±225 mA
CC
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Package thermal impedance, θ (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86°C/W
JA
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, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
stg
‡
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
TA ≤ 25°C
POWER RATING
DERATING FACTOR
T
= 70°C
T
= 85°C
T = 125°C
A
POWER RATING
A
A
PACKAGE
ABOVE T = 25°C
POWER RATING
POWER RATING
A
J
1375 mW
11.0 mW/°C
880 mW
715 mW
275 mW
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
NE556, SA556, SE556
DUAL PRECISION TIMERS
SLFS023C – APRIL 1978 – REVISED DECEMBER 1999
recommended operating conditions
MIN
4.5
MAX
16
UNIT
NE556, SA556
SE556
Supply voltage, V
V
CC
4.5
18
Input voltage (CONT, RESET, THRES, and TRIG), V
V
CC
V
I
Output current, I
±200
70
mA
O
NE556
SA556
SE556
0
–40
–55
Operating free-air temperature, T
85
°C
A
125
electrical characteristics, V
= 5 V to 15 V, T = 25°C (unless otherwise noted)
CC
A
NE556, SA556
SE556
TYP
10
PARAMETER
TEST CONDITIONS
UNIT
MIN
8.8
TYP
10
MAX
11.2
4.2
250
5.6
2.2
2
MIN
9.4
MAX
10.6
4
V
V
= 15 V
= 5 V
CC
V
T
Threshold voltage level
V
nA
V
2.4
3.3
30
2.7
3.3
CC
I
T
Threshold current (see Note 3)
Trigger voltage level
30
250
5.2
1.9
0.9
1
V
V
= 15 V
= 5 V
4.5
1.1
5
4.8
5
CC
V
TRIG
TRIG
1.67
0.5
0.7
0.1
–0.4
1.45
1.67
0.5
CC
I
Trigger current
TRIG at 0 V
µA
V
Reset voltage level
0.3
1
0.3
0.7
V
RESET
RESET at V
0.4
1.5
0.1
0.4
–1
CC
I
I
Reset current
mA
nA
V
RESET
RESET at 0 V
–0.4
Discharge switch off-state
current
20
100
20
100
DISCH
V
V
= 15 V
= 5 V
9
10
3.3
0.1
0.4
2
11
4
9.6
2.9
10
3.3
0.1
0.4
2
10.4
3.8
CC
V
Control voltage (open circuit)
Low-level output voltage
CONT
2.6
CC
I
I
I
I
I
I
I
I
I
= 10 mA
= 50 mA
= 100 mA
= 200 mA
= 5 mA
0.25
0.75
2.5
0.15
0.5
OL
OL
OL
OL
OL
OL
OH
OH
OH
V
= 15 V
= 5 V
CC
CC
2.2
V
OL
V
2.5
0.1
0.15
13.3
12.5
3.3
20
2.5
0.1
0.15
13.3
12.5
3.3
20
0.25
0.3
0.15
0.25
V
= 8 mA
= –100 mA 12.75
= –200 mA
13
3
V
V
= 15 V
= 5 V
CC
V
OH
High-level output voltage
Supply current
V
= –100 mA
= 15 V
= 5 V
2.75
CC
V
V
V
V
30
12
26
10
24
10
20
8
Output low,
No Load
CC
CC
CC
CC
mA
nA
6
6
I
CC
= 15 V
= 5 V
18
18
Output high,
No load
4
4
NOTE 3: This parameter influences the maximum value of the timing resistors R and R in the circuit of Figure 1. For example, when
A
B
V
CC
= 5 V, the maximum value is R = R + R ≈ 3.4 MΩ, and for V
= 15 V, the maximum value is ≈ 10 MΩ.
CC
A
B
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
NE556, SA556, SE556
DUAL PRECISION TIMERS
SLFS023C – APRIL 1978 – REVISED DECEMBER 1999
operating characteristics, V
= 5 V and 15 V
CC
NE556, SA556
SE556
TYP
0.5
TEST
CONDITIONS
PARAMETER
UNIT
†
MIN
TYP
1
MAX
MIN
MAX
§
§
§
Each timer, monostable
3
1.5
¶
‡
Each timer, astable
T
A
= 25°C
2.25%
±1
1.5%
±0.5
30
Initial error of timing interval
Timer 1 — Timer 2
Each timer, monostable
50
100
0.2
Temperature coefficient of
timing interval
¶
Each timer, astable
Timer 1 — Timer 2
T
A
= MIN to MAX
150
±10
0.1
90
ppm/°C
±10
0.05
0.15
±0.1
100
100
Each timer, monostable
0.5
Supply voltage sensitivity of
timing interval
¶
Each timer, astable
T
A
= 25°C
0.3
%/V
ns
Timer 1 — Timer 2
±0.2
100
100
Output pulse rise time
Output pulse fall time
300
300
200
200
C
T
A
= 15 pF,
= 25°C
L
†
‡
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: R = 2 kΩ to 100 kΩ, C = 0.1µF.
A
Values specified are for a device in an astable circuit similar to Figure 1, with component values as follow: R = 1 kΩ to 100 kΩ, C = 0.1µF.
A
APPLICATION INFORMATION
V
CC
(5 V to 15 V)
V
CC
Open
(see Note A)
(5 V to 15 V)
CONT
RESET
DISCH
V
CC
0.01 µF
R
R
A
B
R
L
CONT
RESET
DISCH
V
R
CC
A
OUT
OUT
R
L
THRES
TRIG
GND
OUT
OUT
THRES
TRIG
C
INPUT
GND
C
NOTE A: Bypassing the control-voltage input to ground with
a capacitor may improve operation. This should be
evaluated for individual applications.
Figure 1. Circuit for Astable Operation
Figure 2. Circuit for Monostable Operation
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
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BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
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Copyright 1999, Texas Instruments Incorporated
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