lmc555 National Semiconductor Corporation, lmc555 Datasheet

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lmc555

Manufacturer Part Number
lmc555
Description
Cmos Timer
Manufacturer
National Semiconductor Corporation
Datasheet

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© 2006 National Semiconductor Corporation
8-Pin Molded Dip (MDIP)
LMC555
CMOS Timer
General Description
The LMC555 is a CMOS version of the industry standard
555 series general purpose timers. In addition to the stan-
dard package (SOIC, MSOP, and MDIP) the LMC555 is also
available in a chip sized package (8 Bump micro SMD) using
National’s micro SMD package technology. The LMC555
offers the same capability of generating accurate time delays
and frequencies as the LM555 but with much lower power
dissipation and supply current spikes. When operated as a
one-shot, the time delay is precisely controlled by a single
external resistor and capacitor. In the stable mode the oscil-
lation frequency and duty cycle are accurately set by two
external resistors and one capacitor. The use of National
Semiconductor’s LMCMOS
quency range and low supply capability.
Pulse Width Modulator
Ordering Information
8-Pin Small Outline (SO)
Note: See Mil-datasheet MNLMC555-X for specifications on the military device LMC555J/883.
8-Pin Mini Small Outline
LMCMOS
8-Bump micro SMD
8-Bump micro SMD
Package
(MSOP)
is a trademark of National Semiconductor Corp.
NOPB
Temperature Range
process extends both the fre-
−40˚C to +85˚C
LMC555CMMX
LMC555CBPX
LMC555CTPX
LMC555CMM
LMC555CMX
LMC555CBP
LMC555CTP
LMC555CM
LMC555CN
Industrial
DS008669
00866920
Package Marking
LMC555CM
LMC555CN
ZC5
F02
F1
Features
n Less than 1 mW typical power dissipation at 5V supply
n 3 MHz astable frequency capability
n 1.5V supply operating voltage guaranteed
n Output fully compatible with TTL and CMOS logic at 5V
n Tested to −10 mA, +50 mA output current levels
n Reduced supply current spikes during output transitions
n Extremely low reset, trigger, and threshold currents
n Excellent temperature stability
n Pin-for-pin compatible with 555 series of timers
n Available in 8-pin MSOP Package and 8-Bump micro
supply
SMD package
2.5k Units Tape and Reel
3.5k Units Tape and Reel
250 Units Tape and Reel
250 Units Tape and Reel
1k Units Tape and Reel
3k Units Tape and Reel
3k Units Tape and Reel
Transport Media
Rails
Rails
00866915
NSC Drawing
www.national.com
BPA08EFB
TPA08EFA
MUA08A
May 2006
M08A
N08E

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lmc555 Summary of contents

Page 1

... SMD LMC555CBP LMC555CBPX 8-Bump micro SMD LMC555CTP NOPB LMC555CTPX Note: See Mil-datasheet MNLMC555-X for specifications on the military device LMC555J/883. LMCMOS ™ trademark of National Semiconductor Corp. © 2006 National Semiconductor Corporation Features n Less than 1 mW typical power dissipation at 5V supply n 3 MHz astable frequency capability n 1 ...

Page 2

Connection Diagrams www.national.com 8-Pin SOIC, MSOP, MDIP Top View 8-Bump micro SMD Top View (Bump Side Down) 2 00866901 00866909 ...

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Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. + Supply Voltage, V Input Voltages TRIG RES CTRL V THRESH Output Voltages, ...

Page 4

Electrical Characteristics Test Circuit 25˚C, all switches open, RESET to V Symbol Parameter ∆t/∆T Timing Shift with Temperature f Astable Frequency A f Maximum Frequency MAX Output Rise and R F Fall Times t Trigger ...

Page 5

Application Information MONOSTABLE OPERATION In this mode of operation, the timer functions as a one-shot (Figure 1). The external capacitor is initially held discharged by internal circuitry. Upon application of a negative trigger pulse of less than 1 ...

Page 6

Application Information Top Trace: Output 5 V/Div. CC TIME = 20 µs/Div. Bottom Trace: Capacitor Voltage 1 V/Div 3.9 kΩ kΩ 0.01 µF FIGURE 5. Astable Waveforms The ...

Page 7

Application Information Top Trace: Modulation 1 V/Div. CC TIME = 0.2 ms/Div. Bottom Trace: Output Voltage 2 V/Div 9.1 kΩ 0.01 µF FIGURE 9. Pulse Width Modulator Waveforms PULSE POSITION MODULATOR This ...

Page 8

Physical Dimensions 8-Pin (0.118” Wide) Molded Mini Small Outline Package www.national.com inches (millimeters) unless otherwise noted Molded Small Outline (SO) Package (M) NS Package Number M08A NS Package Number MUA08A 8 ...

Page 9

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Molded Dual-in-line Package (N) NS Package Number N08E 9 www.national.com ...

Page 10

Physical Dimensions NOTES: UNLESS OTHERWISE SPECIFIED 1. EPOXY COATING 2. 63Sn/37Pb EUTECTIC BUMP 3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD. 4. PIN A1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION. REMAINING PINS ARE NUMBERED COUNTERCLOCKWISE. 5. ...

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Physical Dimensions inches (millimeters) unless otherwise noted (Continued) NOTES: UNLESS OTHERWISE SPECIFIED 1. EPOXY COATING 2. FOR SOLDER BUMP COMPOSITION, SEE “SOLDER INFORMATION” IN THE PACKAGING SECTION OF THE NATIONAL SEMICONDUCTOR WEB PAGE (www.national.com). 3. RECOMMEND NON-SOLDER MASK DEFINED LANDING ...

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Tel: 81-3-5639-7560 ...

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