LM556-MIL [TI]
LM556-MIL Dual Timer;
| 型号： | LM556-MIL |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | LM556-MIL Dual Timer |
| 文件： | 总9页 (文件大小：244K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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March 2000
LM556
Dual Timer
General Description
Features
n Direct replacement for SE556/NE556
n Timing from microseconds through hours
The LM556 Dual timing circuit is a highly stable controller ca-
pable of producing accurate time delays or oscillation. The
556 is a dual 555. Timing is provided by an external resistor
and capacitor for each timing function. The two timers oper-
ate independently of each other sharing only VCC and
ground. The circuits may be triggered and reset on falling
waveforms. The output structures may sink or source
200mA.
n Operates in both astable and monostable modes
n Replaces two 555 timers
n Adjustable duty cycle
n Output can source or sink 200mA
n Output and supply TTL compatible
n Temperature stability better than 0.005% per ˚C
n Normally on and normally off output
Applications
n Precision timing
n Pulse generation
n Sequential timing
n Time delay generation
n Pulse width modulation
n Pulse position modulation
n Linear ramp generator
Connection Diagram
Dual-In-Line, Small Outline Packages
DS007852-1
Top View
Ordering Information
Package
Part Number
Package Marking
LM556CM
Media Transport
NSC Drawing
M14A
14-Pin SOIC
LM556CM
LM556CMX
LM556CN
Rails
2.5k Units Tape and Reel
Rails
LM556CM
14-Pin MDIP
LM556CN
N14a
© 2000 National Semiconductor Corporation
DS007852
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Schematic Diagram
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2
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature Range
Soldering Information
−65˚C to +150˚C
260˚C
Dual-In-Line Package
Soldering (10 Seconds)
Small Outline Packages
Vapor Phase (60 Seconds)
Infrared (15 Seconds)
Supply Voltage
+18V
215˚C
220˚C
Power Dissipation (Note 2)
LM556CM
410 mW
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
LM556CN
1620 mW
Operating Temperature Ranges
LM556C
0˚C to +70˚C
Electrical Characteristics
(TA = 25˚C, VCC = +5V to +15V, unless otherwise specified)
Parameter
Conditions
Limits
LM556C
Typ
Units
Min
Max
Supply Voltage
4.5
16
V
∞
Supply Current
VCC = 5V, RL
=
3
6
∞
(Each Timer Section)
VCC = 15V, RL
=
10
14
mA
(Low State) (Note 3)
Timing Error, Monostable
Initial Accuracy
0.75
50
%
Drift with Temperature
RA = 1k to 100kΩ,
ppm/˚C
C = 0.1µF, (Note 4)
Accuracy over Temperature
Drift with Supply
1.5
0.1
%
%/V
Timing Error, Astable
Initial Accuracy
2.25
150
3.0
%
ppm/˚C
%
Drift with Temperature
Accuracy over Temperature
Drift with Supply
RA, RB = 1k to 100kΩ,
C = 0.1µF, (Note 4)
0.30
5
%/V
V
Trigger Voltage
VCC = 15V
VCC = 5V
4.5
5.5
2.0
1.0
1
1.25
1.67
0.2
V
Trigger Current
Reset Voltage
Reset Current
Threshold Current
µA
0.4
0.5
V
0.1
0.6
mA
VTH = V-Control (Note 6)
VTH = 11.2V
0.03
0.1
250
µA
nA
Control Voltage Level and
Threshold Voltage
VCC = 15V
VCC = 5V
9
2.6
10
3.33
11
4
V
Pin 1, 13
1
100
nA
Leakage Output High
Pin 1, 13 Sat
(Note 7)
Output Low
VCC = 15V, I = 15mA
VCC = 4.5V, I = 4.5mA
VCC = 15V
180
80
300
200
mV
mV
Output Low
Output Voltage Drop (Low)
ISINK = 10mA
ISINK = 50mA
ISINK = 100mA
ISINK = 200mA
VCC = 5V
0.1
0.4
2
0.25
0.75
2.75
V
V
V
V
2.5
ISINK = 8mA
V
V
ISINK = 5mA
0.25
0.35
3
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Electrical Characteristics (Continued)
(TA = 25˚C, VCC = +5V to +15V, unless otherwise specified)
Parameter
Conditions
Limits
LM556C
Typ
Units
Min
Max
Output Voltage Drop (High)
ISOURCE = 200mA, VCC = 15V
ISOURCE = 100mA, VCC = 15V
VCC = 5V
12.5
V
V
12.75
2.75
13.3
3.3
V
Rise Time of Output
100
ns
ns
Fall Time of Output
100
Matching Characteristics
Initial Timing Accuracy
Timing Drift with Temperature
Drift with Supply Voltage
(Note 8)
0.1
2.0
0.5
%
±
10
ppm/˚C
%/V
0.2
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Note 2: For operating at elevated temperatures the device must be derated based on a +150˚C maximum junction temperature and a thermal resistance of 77˚C/W
(Plastic Dip), and 110˚C/W (SO-14 Narrow).
Note 3: Supply current when output high typically 1mA less at V
= 5V.
CC
Note 4: Tested at V
= 5V and V
= 15V.
CC
CC
Note 5: As reset voltage lowers, timing is inhibited and then the output goes low.
Note 6: This will determine the maximum value of R + R for 15V operation. The maximum total (R + R ) is 20 MΩ.
A
B
A
B
Note 7: No protection against excessive pin 1, 13 current is necessary providing the package dissipation rating will not be exceeded.
Note 8: Matching characteristics refer to the difference between performance characteristics of each timer section.
Note 9: Refer to RETS556X drawing of military LM556J versions.
Typical Performance Characteristics
Minimum Pulse Width Required for Triggering
Supply Current vs. Supply Voltage (Each Section)
DS007852-4
DS007852-3
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4
Typical Performance Characteristics (Continued)
High Output Voltage vs. Output Source Current
Low Output Voltage vs. Output Sink Current
DS007852-5
DS007852-6
Low Output Voltage vs. Output Sink Current
Low Output Voltage vs. Output Sink Current
DS007852-7
DS007852-8
Output Propagation Delay vs. Voltage Level of Trigger
Pulse
Output Propagation Delay vs. Voltage Level of Trigger
Pulse
DS007852-9
DS007852-10
5
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Typical Performance Characteristics (Continued)
Discharge Transistor (Pin 1, 13) Voltage vs. Sink
Current
Discharge Transistor (Pin 1, 13) Voltage vs. Sink
Current
DS007852-11
DS007852-12
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6
Physical Dimensions inches (millimeters) unless otherwise noted
Small Outline Package (M)
NS Package Number M14A
14-Lead (0.118” Wide) Molded Mini Small Outline Package
NS Package Number N14A
7
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Notes
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
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Tel: 1-800-272-9959
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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