ICM7250IJE ,Fixed And Programmable Timer/CountersGeneral Description
The Maxim ICM7240/50/60 are programmable timer/
counters and the Maxim ICM7 ..
ICM7250IPE ,Fixed And Programmable Timer/CountersELECTRICAL CHARACTERISTICS
(V'---e5v,TA--r25''C,R--10kn,C--01funless otherwise specified.)
PA ..
ICM7260IJE ,Fixed And Programmable Timer/Countersapplications.
ON/OFF Delay Timers
Batch Timer/Sequencers
Cycle Timers
Programmable Time ..
ICM7260IPE ,Fixed And Programmable Timer/CountersElectrical Characteristics Table along with the
[WI] XI/VIo Synchronous High Speed Operation
..
ICM7555 ,General Purpose Timer, CMOSElectrical Specifications Applies to ICM7555 and ICM7556, Unless Otherwise Specified(NOTE 4)o o oT ..
ICM7555 ,General Purpose Timer, CMOSapplications. - ICM7556 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120µA Improv ..
IDT74FCT164245TPVG , FAST CMOS 16-BIT BIDIRECTIONAL 3.3V TO 5V TRANSLATOR
IDT74FCT16501ATPA , FAST CMOS 18-BIT REGISTERED TRANSCEIVER
IDT74FCT16501ATPV , FAST CMOS 18-BIT REGISTERED TRANSCEIVER
IDT74FCT16501CTPV , FAST CMOS 18-BIT REGISTERED TRANSCEIVER
IDT74FCT16543ATPA , FAST CMOS 16-BIT LATCHED TRANSCEIVER
IDT74FCT16543ATPV , FAST CMOS 16-BIT LATCHED TRANSCEIVER
ICM7240IJE-ICM7240IPE-ICM7242IJA-ICM7242IPA-ICM7250IJE-ICM7250IPE-ICM7260IJE-ICM7260IPE
Fixed And Programmable Timer/Counters
General Description
The Maxim ICM7240/50/60 are programmable timer/
counters and the Maxim ICM7242 is a fixed timer/
counter. They require only 120PA of supply current,
while generating delays from microseconds to days.
Each device combines a counter with an internal
oscillator whose period is controlled by an external
resistor and capacitor. The oscillator can be inhibited
and an external clock applied to the TB l/O terminal.
The programmablecounters in the ICM7240/50/60 can
be programmed using thumbwheel switches, jumpers,
and analog switches,
The ICM7240 has an 8 bit programmable counter and
can generate time delays from 1 to 255 RC time
constants. The ICM7250 has a two digit programmable
BCD counterand can generate time delaystrom 1 to 99
RC time constants. The ICM7260 is used for "real time"
applications and has a modulo 60 programmable
divider, producing time delays from 1 to 59 RC time
constants. The |CM7242 has an 8 bit fixed counter and
can generate a time delay of 1 and 128 RC time
constants, These four devices are easily cascaded and
can operate in either astable or monostable configura-
tions. using the on-chip control tlip-flop with Trigger
and Reset inputs.
Applica tions
The |CM7240/42/50/60 family is suitable for a wide
variety of timing and control applications.
ON/OFF Delay Timers
Batch Timer/Sequencers
Cycle Timers
Programmable Timers
Frequency Synthesizers
Ultra-Long Time Delay Generators
__ - Typical Operating Circuit
[ Z-IEV
I-99 Second Timer l
7 .1_"7
IVIA X I/VI
ICM7250 _ (SW
THUMEWHEEL -
SWITCHES
OUTPUT
2AIALA] 2C I] AM]
Fixed And Programmable
Timer/Coun ters
Fea tures
. improved Second Source! (See 3rd page for "Maxim
Advantage"'.")
' Low Supply Current: 120pA
. Timing from ps to Days
. Shutdown Current less than 10yA
o Programmable Fixed Count
. Cascadable for Long Range Timing
o Monostable or Astable Operation
. Low Power CMOS
i _V _ Ordering Informa tion
l PET TémANGE PACKAGE 1
1(yo724-0y1E 203610385°c 16'Lead PEEQTJIF: .
‘ICM724OIJE -20''C to +85°C 16 Lead CERDIP
lCM72400/D 0'C to 77000 -bit
cM7;YT2TPA" Jc to kw 8 Lead P-LASTIC DIP
iCM72421JA -20oC t;~85”C 8 Lead bsii:%s, - -,
5 icF:42c% one to 970%3 Dice 7 - -.
MwsoieE Twin) +35%: 16 car, PLASTIC - l
iicn/ifzsoiJE -20oC m_‘arc 1aead coup 7
16147st0 _ Trc to '70°C Dice --.
JcMEsTmaE- 20°Crto Ffitoc" 17sreiTir:1Ase,
ICM7260UE T5000 1075550 Ts LeRERDIP
icwzeo-C/D 0°c'toi7o°c Dice
- - Pin Configure tion
Top View
ll' I EITBI/O
+2 OUTPUT E "rCrl"Atprbrt Elm
+ l28/256 ouwur E 'CM7242 E TRIGGER
END 4 E RESET
7250/760 2w ' BUFFEHED
I 1 _ a 15 ll ' RESET [7240]
l't Z 2 To
4 4 LT mnxum ETBI/D l cmmnur
8 B [E] I(IM/PJO LE RC _l7250/BUI
- 10 16 Lt, 104/1725!) Emu
m-, N 32 E ICM7260 ETRIGBEH
40 64 W] nssn
L 30' IN I An, aim
"lClr260-Orwrn Circmt
The Mmum Advantage" Signi/ies an trpgrirdsdquahty level AtnDadtytrtyni/ctrst weoffera seconarsource dev-cc that is sumoctlo ma Io/icwmg guaranmed
peilormance over Iemperalure along with lighter res: specihcattrts on many key paramelors, anddewce enhancements when needed Ilia! result in improved
performance wuhoul changing {he funcilona/ity
lVI/l Xl/VI
09/ 09/ Z 17/ OVZIWOI
ICM7240/42/50/60
Fixed and Programmable
Timer/Coun ters
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ................................ 18V
Input Voltage (Note 1)
ICM7240/50/60,
pins10.11.12.13.14 ........... (Grut-t13V)to(V+ +0.3V)
ICM7242
pins 5.6.7.8 ................. (Gnd-O 3V) to N' HI/W)
Output Voltage
ICM7240/50/60
pms 1.2.3.4.5,6.7,8 ................ (Gnd-O.3V) to +18V
pins 14,15 ................... (Gnd-O 3V) to (V' 0.3V)
Output Voltage
ICM7242
pins 2,3,8 . . . . .......... . . . . ' (Gn0-tr3V) to (V'0.3V)
Maximum Continuous Output
Current (each output) ......................... 50mA
Power Dissipation ............................ 200mW
Derate at -2mW"C above 25°C
Operatmg Temperature Range ............. -20''C to +85‘C
Storage Tem perature Range ............. -55'C to 425°C
Lead Temperature (soldering 10 seconds) .......... (100°C
Note 1: Duetothe SCRstructure inherent intheCMOS process, connecting anyterminal (except pms 1 through son the ICM7240/50/60)
to voltages greater than V‘ or less than Ground may cause destructive device Iatchup. For ths reason, It is recommended that no
Inputs from external sources be applied to the device before the supply IS established. In multiple supply systems, the supply to
ICM7240/42/50/60 should be turned on first. Pins 1 through 8 in the ICM7240/50/60 are open dram devices and are rated to
Withstand 18Volts wnh respect to ground (pm 9).
Stresses above those Irsted under 'Absolule Maximum Ranngs" may cause permanent damage to the dewce These are stress Iahngs only and lunchonal
operalron ol the dewce at these or any other conddlons above those tndwated In the operational sections or the specifications rs not mtplled, Exposure to
absolute maxrrnum ranng conmhons for extended periods may affect dewce rehabrlity.
ELECTRICAL CHARACTERISTICS
N' -+5V, TA:t25”C. R210ktl. 0201;}, unless otherwise speedied.)
PARAMETER SYMBOL CONDITIONS
Guaranteed Supply Voltage V‘
Supply Current I' Reset
724050.60 ( Operating. R =10k!!.C 2 0.1yF
Operating, R I IMH, C - 0,1;1F
TB Inhibited. RC Connected to GND
7242 l Operating, R =10ku.c 7 0.1,1F
' Operating. R -- IMO, C - 0.1;4F
1 l TB Inhibited, RC Connected to GND
T I i i i
1 Im ng Accuracy "N -
RC Oscillator Ffequency Af/AT (Exclusive of RC Drift)
Temperature Drift
l = 1 mA
T SOURCE
tme Base Output Voltage V0TB 'SINK -- 3.2 mA
Time Base Output T
Leakage Current Irssux RC Ground
Mod Voltage Level V v' 7 5V _
1 7240250 60 VOD V' :15v I 11.0
V‘ - 5V
[Trigger Input Voltage vaa V' =15V
v: ' 5V -
Reset Input Voltage VRST V‘ _ 15V
_ Max Count Toggle Rate it V : 2V
7240. 7242 V - 5V Counter/Ch/der Mode
V - 15V
50% Duty Cycle Input with Peak to Peak
L Voltages Equal to V‘ and GND
Max Counter Toggle Rate, _ f V" a SV
7250. 7260 t (Counter/Diwder Mode)
Max Count Toggte Rate - _
7240, 7250, 7260 f, Programmed Timer Divider Mode
1 - - - - -
All Outputs except TB Output
Output Saturation Vo tage ' V‘ 7 5V. low 7 3 2 mA
,‘ ' -
Output Leakage Current 'ou V’ I 5V. per Output _
Output Sourcing Current I V' 7 5V
7242 SOURCE Terminals 2 a. 3, Voor : IV
MIN Timing Capacitor C,
Timing Reswstor Range R, ' ' fi')
The elecIr/ca/ cfraracterssties above ale a reproduction of a pomcn of Intersrls copyrrghtedt1983. 1984) dala book. This Informarron does not corrslitute ar"y
represer7tatt0n Dy Maxim that /ntersils products WIN perform m accordance thh these sptrtvficatit2rrs The Electrrcal Chtrracterrstrcs Table along " mo
descnplwe excerpts lrom the rnirnutacturers data sheet nave been Included m (his data sheet solely for comparatwe purposes.
lVl/J XI/Vl
