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ICM7555MJA ,General Purpose timerselectrical characteristics above are a reproduction of a portion of Intersil's copyrighted ( 1983/1 ..
ICM7555MJA ,General Purpose timersApplications Pulse Position Modulation Sequential Timing Missing Pulse Detector Pulse Gener ..
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ICM7555 MTV-ICM7555ISA-ICM7555ITV-ICM7555MJA-ICM7555MTV-ICM7556ISD
General Purpose timers
190481; Rev 2; 11/92
General Descrip tion
The Maxim ICM7655 and ICM7556 are respectively single
and dual general purpose RC timers capable of gener-
ating accurate time delays or frequencies. The primary
feature is an extremely low supply current, making this
device ideal for battery-powered systems. Additional fea-
tures include low THRESHOLD, TRIGGER, and RESET
currents, a wide operating supply voltage range, and
improved performance at high frequencies.
These CMOS low-power devices offer significant per-
formance advantages over the standard 555 and 556
bipolar timers. Low-power consumption, combined with
the virtually non-existent current spike during output
transitions, make these timers the optimal solution in
many applications.
Applications
Pulse Position Modulation
Sequential Timing
Missing Pulse Detector
Pulse Generator
Precision Timing
Time Delay Generation
Pulse Width Modulation
Pin Configuration
Top View
GNDE . V a w
WE'RE Mina," jotscmncs
OUTPUTE ICM7555 Emaisnow
“-557 CONTROL
E ti VOLTAGE
V' AND CASE
DISCHARGE I . V Ev.
YHRESHOLD E E msc-ara-
same: 3 ”Mm”. Elmaesnow
SECTION WE ICM7556 tl t('/,'l'rl'd'i SECTION
A OUTPUT E w RESET B
___GE iE 9 OUTPUT
GNDE El mm
24fyffl22i] lic [LAM]
General Purpose Timers
Features
. Improved 2nd Source! (See 3rd page tor
"Maxim Advantage''''').
o Wlde Supply Voltage Range: 2-18V
o No Crowbarring of Supply During Output
Thtrtttltltm
. Adjustable Duty Cycle
. Low THRESHOLD, TRIGGER and RESET
Curents
. TTL Compatible
O Monolithic, Low Power CMOS Design
Ordering Information
PART TEMP. RANGE PACKAGE
ICM7555IPA -20''C to +85°C 8 Lead Plastic DIP
lCM75551JA -2tPC to +85°C 8 Lead CEHDIP
ICM7555ITV -20''C to +85°C TO-99 Can
1CM7555MJA -550C to +125°C 8 Lead CERDIP
ICM7555MTV -55''C to +125°C TO-99 Can
ICM7555ISA -2ty'C to +85°C 8 Lead Small Outline
|CM7555/D ty' C to +7ty' C Dice
lCM7556IPD -20°C to +85°C 14 Lead Plastic DIP
ICM7556MJD -55'C to +125°C 14 Lead CERDIP
|CM7556ISD -20°C to +85°C 14 Lead Small Outline
|CM7556/D 0° C to +70° C Dice
Typical Operating Circuit
Trv'"") 1/+
a:-------' et E-o
- _ MAXIM E]
ICM7555 6
OUTPUT
Frequency Generator I
(Derailed Circuit Diagram - F igure-I a)
The "Maxim Advantage""signifies an upgraded quality level. At no additional cost we offer a second-source device that is subject to the
following: guaranteed performance over temperature along with lighter test specifications on many key parameters; and device
enhancements, when needed, that result in improved performance without changing the functionality.
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Maxim Integrated Products 1
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General Purpose Timers
ABSOLUTE MAXIMUM RATINGStNotet)
Supply Voltage tr....-......---- +18 Volts ICM7555lSA (Maxim) ................. -20°C. to +85°C
Input Voltage TRIGGER |CM7555|PA ......................... -200C to +85°C
Control Voltage THRESHOLD RESET ICM7556l PD ........................ -2tFC to +85°C
Output Current ................................... 100mA ICM7555MTV trFtmm.Wrr.r.CF_rwr...' -55lto +125FC
Power Dissipation' ICM7556 ...................... 300mw lCM7556MJD ----------------------- -550C to +1250C
|CM7555 ..................... 200mW Storage Temperature ' . . ". ................. -650C to +150°C
Operating Temperature Range Lead Temperature (Soldering 60 Seconds) ........... +300°C
ICM7555|JA (Maxim) .................. -2CPC to +85°C
Stresses above 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 above those indicated in the operational sections Di the specifications is not implied. Exposure
to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V+ = +2 to +15 volts; TA = 25°C. Unless Noted]
PARAMETER SVMBOW TEST CONDITIONS MIN TYP MAX UNITS
Supply Voltage v' --20'C 2' TA 5: s70''C 2 18 v
-55''CL:TaS+125''C 3 16 V
Supply Current 3 l' ICM7555 ( _ 21t 60 200 "A
V‘ = 18V 120 300 PA
ICM7556 V‘ = 2V 120 400 PA
v' = 18V 240 600 “A
Timing Error 'u,Rts--1ktot00k, SVSV‘S 15V
C = 0.1uF
Initial Accuracy Note 4 2.0 5.0 %
Dntt wrth Temperature Note 4 v* = SV 50 ppm/“C
v' = 10V 75
v' = 15v 100
Dntt with Supply Voltage l/' = 5V 1.0 3.0 °/o/V
Threshold Voltage VIH V+ = 5V 0.63 0.66 0.67 V'
Tngger Voltage VYRIG ( = 5V 0.29 0.33 0.34 V’
Trigger Current Irma V* = 18V 50 PA
V' = 51/ 10 PA
V+ = 2V 1 pA
Threshold Current Im V' = 18V 50 pA
V‘ = SV 10 DA
V' = 2V 1 pA
Reset Current 'RSY VRESET = Ground V‘ = 18V 100 PA
It' = w 20 PA
It'' = 2V 2 PA
Reset Voltage VRST V' = 18V 0,4 0.7 1.0 v
( = 2V 0.4 0.7 1.0
Control Voitage Lead ch ( = 5V 0.62 0,66 0.67 V
Output Voltage Drop Vo Output Lo It) = 18V lsmx = 3.2mA 0.1 0.4 v
( = 5V lsmx = 3.2mA 0,15 0.4 v
Output HI ( = 18V ISOURCE = 1.0mA 17.25 17,8 V
V‘ = 5V Isomace = 1.0mA 4.0 4.5 v
Ruse Time of Output tr RL v 10hhn Cc =10pF V+ = SV 35 40 75 ns
Fall Time of Output tt RL :1OMI) Cc = IODF V' = SV 35 40 75 ns
Guaranteed Max Or,c Freq tma, Astable Operation "500 kHz
Note 1: Due to the SCH structure inherent in the CMOS process used to fabricate these devices, connecting any terminal to a voltage greater than
Vt +0.3V or less than v- -0Bif may cause destructive latchup. For this reason it is recommended that no inputs from external sources not
operating from the same power supply be applied to the device before its power supply is established. In multiple systems, the supply of the
ICM7555/6 must be turned on first,
Note 2: Junction temperatures should not exceed 135°C and the power dissipation must be limited to 20mW at 125°C. Below 125°C power dissipation
may be increased to 300mW at 25°C. Derating factor is approximately 3mW/°C (7556) or 2mW/°C [7555).
Note 3: The supply current value is essentially independent of the TRIGGER, THRESHOLD and RESET voltages.
Note 4: Parameter is not 100% tested. Maiority of all units meet this specification.
The electrical characteristics above are a reproduction of a portion of tntersil's copyrighted (1983/1984) data book. This information does not constitute
any representation by Maxim that In tersil's products will perform in accordance with these specifications. The "Electrical Characteristics Table“along
with the descriptive excerpts from the original manufacturer's data sheet have been included in this data sheet solely for comparative purposes.
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