M51953A MITSUBISHI | Alldatasheet
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MITSUBISHI <Dig./Ana. INTERFACE> M5 1953A,B/M51954A,B VOLTAGE DETECTING, SYSTEM RESETTING IC SERIES
DESCRIPTION
M51953A,8/M51954,.,B are semiconductor integrated circuits PIN CONFIGURATION (TOP VIEW) ideal for detecting supply voltage and resetting all types of logic circuits such as CPUs. ag Bloor They include a built-in delay circuit to provide the desired BS Faloctay caracrron retardation time simply by adding an external capacitor. g = ND They find extensive applications, including circuits for S25 battery checking, level detecting and waveform shaping. 3 arrery ngeine gan ping = 2/7] surevy vortace FEATURES . @ Few external parts Outline 6P6T © Large delay time with a capacitor of small capacitance (tg © 100ms, at 0.33uF) (M51953, M51954) © Low threshold operating voltage (Supply voltage to keep nc f}Oz z[a)nc low-state at low supply voltage) NC Fa 2 SUPPLY VOLTAGE ccc eevee ees O.6V (TYP,) at Ry = 22k2 no [3] 99S [E] ovrrur © Sudden change in power supply has minimal effect on the ICs Outline 8P2S-A © Wide application range NC. NO CONNECTION © SIL package of the same height as DIP (5-pin SIP) APPLICATION Reset circuit of Pch, Nch, CMOS, microcomputer, CPU and microcomputer, Reset of logic circuit, Battery check circuit, Switching circuit back-up voltage, Level detecting circuit, Waveform shaping circuit, Delay waveform generating circuit, DC-DC converter, Over voltage protection circuit RECOMMENDED OPERATING CONDITION BLOCK DIAGRAM MS1953A, 8 MSI9544, 8 SUPPLY sa fulesn tows SUPPLY A builtin itn Loa uiltin Load - eu - 8. Open Cotetor wou 8+ Open Collector yt 254A poke | rn S 2 an 8 whe 8 4 8 Qs bee a GNo DELAY No Deway CAPACITOR CAPACITOR
4 MITSUBISHI
722 ELECTRIC
. MITSUBISHI <Dig./Ana. INTERFACE? MS51953A,B/M51954A,B VOLTAGE DETECTING, SYSTEM RESETTING IC SERIES FUNCTION DIAGRAM M51953A, B M51954A, B weeeeery 4, 25Vh-----=-5 ¥ SUPPLY 4.25 SUPPLY VOLTAGE VOLTAGE 0. 65vE-= t t oureur 4 an oureur Cl] C] STATE r i f TATE (LL Le s L Li] L_, OUTPUT UNDEFINED tg=0. 34XCa(pF) «sec ta=0. 34% Ca( pF) zsec ABSOLUTE MAXIMUM RATINGS (t2=25%. uniess oterwse noted) Veo ‘Supply voltage co v Output Sink Current € mA ve Ourput vot A Type (Output with constant current load) H Veo v ° pur volleg B Type (Open collector output) 18 7 oa oP Sit 450 ow a ot dinsipa 8P FLAT 300 Sit [as Ke Thermal Derating Ta2ae SPS mw/C aP FLAT 3 Operating temperature =30- +85 © =a +125 ELECTRICAL CHARACTERISTICS (1a=250, uniess otnermse notec) M51953A M51954A, M51953B M51954B symbol parame Test cond u ym rameter est conditions ‘ Detecting votage 405 [4.25 | aas [Ov | Hystensis vohage [30 | so | eo fw Detecting voltage Temperature Cootficent [= [oor [ = | we] \\ rout Current [Weavoo=sv | = aso [ceo “ [iwe@voo=sv | = eo 0 | [to | Delay Time Ta= —30~ +850, Ca=0.01uF (Note) | [tpg [Constant Curent [voomsv PT 3 na | Vsat Output Saturation Voltage eset ype Wee in v H reset type Voc = 5V.Isink= 4mA Treset ype Minimum | A =22k@, Vears0av Vor. | Threshold Operating Votage Sone ane R sasoey [ — [oer t os} y {Pre operaton R= 100K2, Verso4v | — | 0.95 | 0.7 | Output Leak Curtom Type 8 [ — [ = [sof na | ° Type 8, Ta= —30~ +856 pa | Type A Voo= 5V. Vo= 1/2Vee: A Lox ououtighvotage ee“ oef PV ‘Note: Delay ume can be changed by changing delay capacitor for exernal capacitor Wpes, (Please refer to typical characteristics) MITSUBISHI PRS : 7-23
MITSUBISHI <Dig./Ana. INTERFACE> M5 1953A,B/MS1954A,B VOLTAGE DETECTING, SYSTEM RESETTING IC SERIES TYPICAL CHARACTERISTICS TYPICAL CHARACTERISTICS DETECTING VOLTAGE VS. THERMAL DERATING AMBIENT TEMPERATURE (MAXIMUM RATING) (Supply voltage detecting series) “ we LET TTT > 2 © Vs :™ So | | TT | BE | fee | Ee 5 ga Soh Neo zat | tT TT | Fa =e SPIN SOP E 4.26 os ten-"8 ae wae 5 eal TOTES tL || AB sJ wt TTT oO 25 50 iy 100 125, —40 —20 [) 20 40 60 80 100 AMBIENT TEMPERATURE Ta (°C) AMBIENT TEMPERATURE Ta (°C) DELAY CAPACITANCE VS. DELAY TIME VS. DELAY TIME AMBIENT TEMPERATURE (M5195XX, External delay capacitor type) (M5195XX, External delay capacitor type) Se 5 a es a 6 SEvconey FH HH [erotr| | [ [| ~ Y 5 s LUI TT Sees > a nt) a a on a
34 A z E [|
z ot TT wy TT : a eee
5 SRS 23 ==
Fe sa i rt | tod 3g 2 Sof LT AT TT TTT 3 PPP % OO et a tt ey a 5 ae eee ee 8 3 an 1 PUA I TTI tit | | 01 3571 35710 357100 3571000 —40—20 0 20 40 «60 80 100 DELAY TIME tpg (ms) AMBIENT TEMPERATURE Tp (°C) CONSTANT CURRENT AT Cd PIN VS. AMBIENT TEMPERATURE THRESHOLD OPERATING VOLTAGE (IMS195XX, External delay capacitor type) ([L] reset type) 12 1.0 By L 277 Voom t5¥ = #710) = o8| ett tT Tt Ty ; 5-8 8 « fo Tt | i < =; a) KH z Al RL=2. 2k
2 PTFE 3 Ld aN Ge
5, ee ‘a prs 22k ° 2 i R= 100k Q| 2 3 0. 2| ae e LLET {4 y | Yi | Wis 8 4g dl SSS AMBIENT TEMPERATURE Ta (°C) SUPPLY VOLTAGE Vcc (V) MITSUBISHI 7—24 PRs .
MITSUBISHI <Dig./Ana. INTERFACE> MS 1953A,B/M51954A,B VOLTAGE DETECTING, SYSTEM RESETTING IC SERIES OUTPUT LOAD CURRENT VS. OUTPUT SATURATION VOLTAGE VS. OUTPUT VOLTAGE OUTPUT SINK CURRENT (ms19xxa) s 03 Fo | Ges ee veomay™ py eT TT EE Lee fod EXCEPT ABOVE-MENTIONED 3 Se, weet | Fee PLA ORS eo Le! | 2 “CECE Trey aii TTT} eat et PPePre of Eee - Poor 0 1 2 3 4 5 6 fo) 4 8 12 16 OUTPUT SINK CURRENT Isink (mA) OUTPUT VOLTAGE Vo (V) CIRCUIT CURRENT VS. AMBIENT TEMPERATURE (M5 1953B, M51954B) 700; ot | | Tt TY 3 falter] | | | | i CRA Ft | | | TAN I eo + tt | tt | re “LL ELT TT ~t0 —20 0 20 40 60 80 100 AMBIENT TEMPERATURE Ta (°C) MITSUBISHI ware ; 7-25
MITSUBISHI <Dig./Ana. INTERFACE> MS 1953A,B/M51954A,B VOLTAGE DETECTING, SYSTEM RESETTING IC SERIES EXAMPLE OF APPLICATION CIRCUIT M5195XX Series Reset Circuit Vee SUPPLY i SUPPLY © VOLTAGE gr. O VOLTAGE M51953x I O O-+ RESET( RESET) M51954x Outut © GND O DELAY CAPACITOR QO GND Ca Note 1. When the detecting supply voltage is 4.25V, Note 3. !f M5195XX and the logic circuit have acommon M51951, M51952, M51953 and M51954 are used. power supply, type A (built-in load type) can be applied In this case, Ry and Rg are not necessary. whether a pull-up resister is included in the logic circuit When the voltage is anything except 4.25V, M51955, or not. M51956, M51957 and M51958 are used. In this case, Note 4. The logic circuit preferably should not have @ + ° ifone i the detecting supply voltage is 1.25 x (Ry + Ra) (v) pull-down resistor, but if one is Present, add load resistor Ra Ri to overcome the pull-down resistor. approximately. The detecting supply voltage can be set Note 5. When the reset terminal in the logic circuit is of between 2V and 15V. the low reset type, M51951, M51953, M5195 and Note 2. When the delay time is short, M51951, M51952, M51957 are used and when the terminal is of the high M51955 and M51956 are available. These ICs have a reset type, M51952, M51954, M51956 and M51958 are delay capacity and the delay time is about 200us. used. If a longer delay time is necessary, M51953, M51954, Note 6. When a negative supply voltage is used, supply 51957 and M51958 are used. In this case, the delay voltage side of M5195XX and the GND side are con- time is about 0.34 x Cd (pF) usec. nected to negative supply voltage respectively. Case of Using Other Reset Signal except Supply Voltage in the M5195XX Series (a) Reset at ON (b) Reset at transistor ON Vee Vee SUPPLY 1 SUPPLY SUPPLY if SUPPLY quot £5, Q VOLTAGE goss by, Qvortace lexrtawae oeLay{O—+—O} RESET( RESET) xT ee ayfO——O} RESeT(RESET) CAPACITOR TYPE) ouTPuT CAPACITOR TYPE) OUTPUT OGND O DELAY OGND ie} O DELAY OGNO CAPACITOR CAPACITOR do ea ri4 Ca CONTROL SIGNAL RESET AT ON RESET AT TRANSISTOR ON walt !