Original Creation Date: 08/02/95
Last Update Date: 02/17/97
Last Major Revision Date: 08/02/95
MNLM555-X REV 0B0 MICROCIRCUIT DATA SHEET
PRECISION TIMER
General Description
The LM555 is a highly stable device for generating accurate time delays or oscillation.
Additional terminals are provided for triggering or resetting if desired. In the time
delay mode of operation, the time is precisely controlled by one external resistor and
capacitor. For astable operation as an oscillator, the free running frequency and duty
cycle are accurately controlled with two external resistors and one capacitor. The circuit
may be triggered and reset on falling waveforms, and the output circuit can source or sink
up to 200mA or drive TTL circuits.
NS Part Numbers
LM555H/883
LM555J/883
Industry Part Number
LM555
Prime Die
LM555
Processing
MIL-STD-883, Method 5004
Quality Conformance Inspection
MIL-STD-883, Method 5005
Subgrp Description Temp ( C)
o
1 Static tests at +25
2 Static tests at +125
3 Static tests at -55
4 Dynamic tests at +25
5 Dynamic tests at +125
6 Dynamic tests at -55
7 Functional tests at +25
8A Functional tests at +125
8B Functional tests at -55
9 Switching tests at +25
10 Switching tests at +125
11 Switching tests at -55
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MICROCIRCUIT DATA SHEET
MNLM555-X REV 0B0
Features
- Direct replacement for SE555/NE555
- Timing from microseconds through hours
- Operates in both astable and monostable modes
- Adjustable duty cycle
- Output can source or sink 200mA
- Output and supply TTL compatible
- Temperature stability better than 0.005% per degrees C
- Normally on and normally off output
Applications
- Precision timing
- Pulse generation
- Sequential timing
- Time delay generation
- Pulse width modulation
- Pulse position modulation
- Linear ramp generator
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MICROCIRCUIT DATA SHEET
MNLM555-X REV 0B0
(Absolute Maximum Ratings)
(Note 1)
Supply Voltage +18V
Power Dissipation
(Note 2) 760 mWLM555H 1180mWLM555J
Operating Temperature Range -55 C to +125 C
Maximum Junction Temperature 150 C
Storage Temperature Range -65 C to +150 C
Soldering Information
Dual-In-Line Package 260 C (Soldering, 10 seconds)
Thermal Resistance
ThetaJA 125 C/W CERDIP (Still Air) 71 C/W (500LF/Min Air flow) 176 C/W METAL CAN (Still Air) 96 C/W (500LF/Min Air flow)
ThetaJC 20 C/W CERDIP 42 C/W METAL CAN
ESD Tolerance
(Note 3) 500V
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Operating Ratings indicate conditions for which the device is functional, but do not
guarantee specific performance limits. For guaranteed specifications and test
conditions, see the Electrical Characteristics. The guaranteed specifications apply
only for the test conditions listed. Some performance characteristics may degrade
when the device is not operated under the listed test conditions.
Note 2: The maximum power dissipation must be derated at elevated temperatures and is
dictated by Tjmax (maximum junction temperature), ThetaJA (package junction to
ambient thermal resistance), and TA (ambient temperature). The maximum allowable
power dissipation at any temperature is Pdmax (Tjmax - TA)/ThetaJA or the number
given in the Absolute Maximum Ratings, whichever is lower.
Note 3: Human body model, 1.5K Ohms in series with 100pF.
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MNLM555-X REV 0B0 MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC: +5V <= Vcc <= +15V
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT SUB-
GROUPS
IccL Supply Current
Low State Vcc = 5V, RL = Infinity 5.0 mA 1
Vcc = 15V, RL = Infinity 12.0 mA 1
Vcc = 18V, RL = Infinity,
V2 = V6 = 18V 18.5 mA 1
IL7 Leakage Current
Pin 7 Vcc = 18V, V7 = 18V, V2 = V6 = 0 100 nA 1
Vsat Saturation
Voltage Pin 7 Vcc = 15V, I7 = 15mA, V2=V6=12V 240 mV 1
Vcc = 4.5V, I7 = 4.5mA 80 mV 1
Vco Control Voltage Vcc = 5V, V2 = V6 = 4V 2.9 3.8 V 1, 2,
3
Vcc = 15V, V2 = V6 = 12V 9.6 10.4 V 1, 2,
3
Vth Threshold Voltage 9.5 10.5 V 1
Ith Threshold Current V6 = VTH, V2 = 7.5V, VTH = T17 Reading 250 nA 1
ITRIG Trigger Current V2 = 0 500 nA 1
VTRIG Trigger Voltage Vcc = 15V 4.8 5.2 V 1
3.0 6.0 V 2, 3
Vcc = 5V 1 1.45 1.9 V 1, 2,
3
Ireset Reset Current V2 = V6 = GND 0.4 mA 1
Vreset Reset Voltage 0.4 1.0 V 1
Vol Output Voltage
Drop Low Vcc = 5V, Isink = +8mA, V7=5V, V6=5V 250 mV 1, 2,
3
Vcc = 15V, Isink = +10mA, V2=V6=15V 150 mV 1
250 mV 2, 3
Vcc = 15V, Isink = +50mA, V2=V6=15V 500 mV 1
800 mV 2, 3
Vcc = 15V, Isink = +85mA, V2=V6=15V 2.2 V 1, 2,
3
Voh Output Voltage
Drop High Vcc = 15V, Isource = 85mA 13 V 1
12.75 V 2, 3
Vcc = 5V, Isource = 85mA 3 V 1
2.75 V 2, 3
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MNLM555-X REV 0B0 MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS(Continued)
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC: +5V <= Vcc <= +15V
SYMBOL PARAMETER CONDITIONS NOTES PIN-
NAME MIN MAX UNIT SUB-
GROUPS
AFREQ A Stable
Frequency 2 45 51 KHz 1
Et Timing Error Vcc = 5V 2 +2 % 1, 2,
3
Vcc = 15V, 1K<=RA<=100K, (Timing error
decreases with an increase in Vcc) 2+2% 1, 2,
3
Delta Et/
Delta Vcc Timing Drift with
Supply 5V <= Vcc <= 15V 2 0.2 %/V 1, 2,
3
AC PARAMETERS
(The following conditions apply to all the following parameters, unless otherwise specified.)
AC: +5V <= Vcc <= +15V
tR Rise Time VTRIG = 5V 2 250 nS 9, 10
2 400 nS 11
tF Fall Time VTRIG = 5V 2 250 nS 9, 10
2 400 nS 11
DC PARAMETERS: DRIFT VALUES
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC: +5V <= Vcc <= +15V. "Delta not required on B-Level product. Deltas required for S-Level product ONLY
as specified on Internal Processing Instructions (IPI)".
Vco Control Voltage Vcc = 5V, V2=V6=4V -0.1 0.1 V 1
Vcc = 15V, V2=V6=12V -0.1 0.1 V 1
Vol Output Voltage
Drop Low Vcc = 15V, Isink = +10mA, V2=V6=15V -50 50 mV 1
Vcc = 15V, Isink = +50mA, V2=V6=15V -50 50 mV 1
Voh Output Voltage
Drop High Vcc = 15V, Isource = 85mA -0.26 0.26 V 1
Note 1: Guaranteed by tests at Vcc = 15V.
Note 2: Guaranteed parameter , Not tested.
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MICROCIRCUIT DATA SHEET
MNLM555-X REV 0B0
Graphics and Diagrams
GRAPHICS# DESCRIPTION
H08CRE (blank)
J08ARL CERDIP (J), 8 LEAD (P/P DWG)
See attached graphics following this page.
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