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MAX6353LSUK+

MAX6353LSUK+

  • 厂商:

    AD(亚德诺)

  • 封装:

    SC74A

  • 描述:

    IC SUPERVISOR PWR SUP SUPPORT

  • 详情介绍
  • 数据手册
  • 价格&库存
MAX6353LSUK+ 数据手册
MAX6351–MAX6360 General Description The MAX6351–MAX6360 microprocessor (μP) supervisors with multiple reset voltages significantly improve system reliability and accuracy compared to separate ICs or discrete components. If any input supply voltage drops below its associated preset threshold, all reset outputs are asserted. In addition, the outputs are valid as long as either input supply voltage remains greater than +1.0V. All devices in this series have an active-low debounced manual-reset input. In addition, the MAX6358/MAX6359/ MAX6360 offer a watchdog timer input with a 46.4s startup timeout period and a 2.9s timeout period. The MAX6355/ MAX6356/MAX6357 offer an additional voltage-monitor input to monitor a third voltage. The MAX6351 features two active-low, push-pull reset outputs, one is referenced to VCC1 and the other is referenced to VCC2. The MAX6353/MAX6356/MAX6359 offer an active-low, push-pull reset output referenced to VCC1. The MAX6354/MAX6357/MAX6360 offer an active-low, push-pull reset output referenced to VCC2. All these devices are offered with a wide variety of voltage threshold levels, as shown in the Voltage-Threshold Levels table. They are available in 5- and 6-pin SOT23 packages and operate over the extended (-40°C to +85°C) temperature range. Voltage Threshold Levels PART NO. VCC1 NOMINAL VCC2 NOMINAL SUFFIX VOLTAGE VOLTAGE (_ _) THRESHOLD (V) THRESHOLD (V) LT 4.63 3.08 LS 4.63 2.93 LR 4.63 2.63 MT 4.38 3.08 MS 4.38 2.93 MR 4.38 2.63 TZ 3.08 2.32 TY 3.08 2.19 TW 3.08 1.67 TV 3.08 1.58 SZ 2.93 2.32 SY 2.93 2.19 SW 2.93 1.67 SV 2.93 1.58 UW 2.78 1.67 UV 2.78 1.58 RW 2.63 1.67 RV 2.63 1.58 Note: Standard versions are shown in bold. Sample stock is generally held on the standard versions only. Contact factory for availability. 19-1508; Rev 7; 5/14 Dual/Triple-Voltage μP Supervisory Circuits Features ●● Precision Monitoring of Multiple +1.8V, +2.5V, +3.0V, +3.3V, and +5V Power-Supply Voltages ●● Precision Factory-Set Power-Supply Reset Thresholds ●● 20μA Supply Current ●● 100ms min Power-On-Reset Pulse Width ●● Debounced TTL/CMOS-Compatible Manual-Reset Input ●● Watchdog Timer • 46.4s Startup Timeout • 2.9s Normal Timeout ●● Fully Guaranteed Over Temperature ●● Guaranteed RESET Valid to VCC1 = 1V or VCC2 = 1V ●● Power-Supply Transient Immunity ●● No External Components for Dual-Voltage Systems ●● Small 5- and 6-Pin SOT23 Packages ●● Low Cost Applications ●● Computers ●● Controllers ●● Portable/BatteryPowered Equipment ●● Intelligent Instruments ●● Multivoltage Systems Ordering Information PART TEMP RANGE PIN-PACKAGE MAX6351_ _UT-T -40°C to +85°C 6 SOT23 MAX6352_ _UK-T -40°C to +85°C 5 SOT23 MAX6353_ _UK-T -40°C to +85°C 5 SOT23 MAX6354_ _UK-T -40°C to +85°C 5 SOT23 MAX6355_ _UT-T -40°C to +85°C 6 SOT23 MAX6356_ _UT-T -40°C to +85°C 6 SOT23 MAX6357_ _UT-T -40°C to +85°C 6 SOT23 MAX6358_ _UT-T -40°C to +85°C 6 SOT23 MAX6359_ _UT-T -40°C to +85°C 6 SOT23 MAX6360_ _UT-T -40°C to +85°C 6 SOT23 *The _ _ are placeholders for the threshold voltage levels of the devices. Substitute the part number suffix in the Voltage Threshold Levels table for the desired voltage level. All devices are available in tape-and-reel only. There is a 2500 piece minimum order increment for the SOT package. Devices are available in both leaded and lead(Pb)-free packaging. Specify lead-free by replacing “-T” with “+T” when ordering. Pin Configurations appear at end of data sheet. Selector Guide appears at end of data sheet. MAX6351–MAX6360 Dual/Triple-Voltage μP Supervisory Circuits Absolute Maximum Ratings VCC1, VCC2 to GND................................................-0.3V to +6V RST (MAX6352/MAX6355/MAX6358).....................-0.3V to +6V RST, MR, WDI, RST1, RSTIN (MAX6351/MAX6353/ MAX6356/MAX6359)........................... -0.3V to (VCC1 + 0.3V) RST, RST2 (MAX6351/MAX6354/ MAX6357/MAX6360)........................... -0.3V to (VCC2 + 0.3V) Input/Output Current, All Pins..............................................20mA Continuous Power Dissipation (TA = +70°C) 5-Pin SOT23 (derate 7.1mW/°C above +70°C)...........571mW 6-Pin SOT23 (derate 8.7mW/°C above +70°C)...........695mW Operating Temperature Range............................ -40°C to +85°C Junction Temperature.......................................................+150°C Storage Temperature Range............................. -65°C to +150°C Stresses beyond 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 beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Electrical Characteristics (VCC1 = VCC2 = +1.2V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL Supply Voltage (Note 2) VCC1, VCC2 Supply Current ICC1 + ICC2 CONDITIONS 5.5 TA = -40°C to +85°C VCC1 = 5.5V, VCC2 = 3.6V, all I/O pins open 1.2 5.5 MAX63_ _T_ MAX63_ _S_ MAX63_ _U_ MAX63_ _R_ MAX63_ _ _T MAX63_ _ _S MAX63_ _ _R VCC2 Threshold (Note 3) VTH2 MAX63_ _ _Z MAX63_ _ _Y MAX63_ _ _W MAX63_ _ _V www.maximintegrated.com MAX 1.0 MAX63_ _M_ VTH1 TYP TA = 0°C to +70°C MAX63_ _L_ VCC1 Threshold (Note 3) MIN TA = +25°C 4.54 TA = +25°C 4.3 TA = -40°C to +85°C 4.5 TA = -40°C to +85°C 4.25 TA = -40°C to +85°C 3.00 TA = -40°C to +85°C 2.85 TA = -40°C to +85°C 2.70 TA = -40°C to +85°C 2.55 TA = -40°C to +85°C 3.00 TA = -40°C to +85°C 2.85 TA = -40°C to +85°C 2.55 TA = -40°C to +85°C 2.25 TA = -40°C to +85°C 2.13 TA = -40°C to +85°C 1.62 TA = -40°C to +85°C 1.53 TA = +25°C 3.03 TA = +25°C 2.88 TA = +25°C 2.74 TA = +25°C 2.58 TA = +25°C 3.03 TA = +25°C 2.88 TA = +25°C 2.58 TA = +25°C 2.28 TA = +25°C 2.16 TA = +25°C 1.64 TA = +25°C 1.55 20 50 4.63 4.72 UNITS V µA 4.75 4.38 4.46 4.50 3.08 3.14 3.15 2.93 2.98 V 3.00 2.78 2.82 2.85 2.63 2.68 2.70 3.08 3.14 3.15 2.93 2.98 3.00 2.63 2.68 2.70 2.32 2.35 2.38 2.19 V 2.22 2.25 1.67 1.70 1.71 1.58 1.61 1.62 Maxim Integrated │  2 MAX6351–MAX6360 Dual/Triple-Voltage μP Supervisory Circuits Electrical Characteristics (continued) (VCC1 = VCC2 = +1.2V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Reset Threshold Tempco SYMBOL CONDITIONS MIN Reset Threshold Hysteresis VCC to Reset Delay Reset Timeout Period RESET Output Voltage Low RESET Output-Voltage High (MAX6351/MAX6353/MAX6354/ MAX6356/MAX6357/MAX6359/ MAX6360 only) TYP ΔVTH/°C VOL VOH VCC1 > VTH1 (MAX), VCC2 > VTH2 (MAX) UNITS ppm/°C VTH/500 V 20 µs 100mV overdrive tRP MAX 20 100 180 280 VCC1 or VCC2 ≥ 2.7V, ISINK = 1.2mA 0.3 VCC1 or VCC2 ≥ 4.5V, ISINK = 3.2mA 0.4 VCC1 or VCC2 ≥ 1V, ISINK = 50µA, TA = 0°C to +70°C 0.3 VCC1 or VCC2 ≥ 1.2V, ISINK = 50µA; TA = -40°C to +85°C 0.3 (_W, _V versions only), VCC1 > VTH1(MAX), VCC2 > VTH2(MAX) ISOURCE = 350µA 0.8 x VCC (_Y versions only), VCC1 > VTH1(MAX), VCC2 > VTH2(MAX) ISOURCE = 500µA 0.8 x VCC (_T, _S, _R versions only), VCC1 > VTH1(MAX), VCC2 > VTH2(MAX) ISOURCE = 800µA VCC - 1.5 ms V V WATCHDOG INPUT (MAX6358/MAX6359/MAX6360) Watchdog Timeout Period tWD WDI Pulse Width (Note 4) tWDI WDI Input Voltage (Note 5) VIL VIH First timeout period after reset 25.6 46.4 72.0 After first WDI falling edge 1.6 2.9 4.5 VIL = 0.4V, VIH = 0.8 x VCC 50 VCC1 = 5V VWDI = 0 ns 0.3 x VCC 0.65 x VCC VWDI = VCC WDI Input Current (Note 6) 120 -20 s 160 -15 V µA MANUAL RESET INPUT MR Input Voltage www.maximintegrated.com VIL MAX63_ _L_, MAX63_ _M_, VCC1 > VTH1(MAX) VIH MAX63_ _L_, MAX63_ _M_, VCC1 > VTH1(MAX) VIL MAX63_ _ _Y, VCC1 > VTH1(MAX) VIH MAX63_ _ _Y, VCC1 > VTH1(MAX) 0.8 2.3 0.3 x VCC V 0.7 x VCC Maxim Integrated │  3 MAX6351–MAX6360 Dual/Triple-Voltage μP Supervisory Circuits Electrical Characteristics (continued) (VCC1 = VCC2 = +1.2V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 32 63.5 100 kΩ MR Pullup Resistance MR Minimum Pulse Width tRP 1 MR Glitch Rejection MR to Reset Delay tMD µs 100 ns 0.1 µs ADJUSTABLE RESET COMPARATOR INPUT (MAX6355/MAX6356/MAX6357) RSTIN Input Threshold VRSTIN VCC1 > VTH1(MAX), VCC2 > VTH2(MAX) RSTIN Input Current IRSTIN 0 < VRSTIN < VCC1 - 0.3V TA = +25°C 1.20 TA = -40°C to +85°C 1.19 1.25 -25 25 RSTIN Hysteresis Note Note Note Note Note Note 1.22 1.24 2.5 V nA mV 1: Overtemperature limits are guaranteed by design and not production tested. 2: The reset output is guaranteed to be in the correct state if either VCC1 or VCC2 is within its specified region of operation. 3: The reset output(s) is asserted if either VCC1 or VCC2 drops below its associated trip point. 4: Guaranteed by design. Not production tested. 5: WDI is internally serviced within the watchdog timeout period if WDI is left unconnected. 6: The WDI input current is specified as the average input current when the WDI input is driven high or low. Typical Operating Characteristics (VCC1 = +5V, TA = +25°C, unless otherwise noted.) 4.0 15 4.0 3.5 5 -40 3.0 VTH 2.5 2.0 RESET (V) 10 0 4.5 3.5 ICC1 (VCC1 = 3.3V, VCC2 = 2.5V) 3.0 2.5 2.0 ICC2 (VCC1 = 5.0V, VCC2 = 3.3V) 1.5 1.5 ICC2 (VCC1 = 3.3V, VCC2 = 2.5V) 1.0 1.0 0.5 -15 10 35 TEMPERATURE (°C) www.maximintegrated.com 60 85 0 RESET vs. VCC1 (VCC2 = GND) 5.0 MAX6351/60-02 MAX6351/60-01 4.5 RESET (V) SUPPLY CURRENT (µA) ICC1 (VCC1 = 5.0V, VCC2 = 3.3V) RESET vs. VCC1 (VCC2 > VTH2) 5.0 MAX6351/60-03 SUPPLY CURRENT vs. TEMPERATURE 20 MAX6356L_ 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VCC1 (V) 0.5 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 VCC1 (V) Maxim Integrated │  4 MAX6351–MAX6360 Dual/Triple-Voltage μP Supervisory Circuits Typical Operating Characteristics (continued) (VCC1 = +5V, TA = +25°C, unless otherwise noted.) 1.05 1.00 0.95 0.90 0.85 0.80 -60 -40 -20 0 20 40 60 80 100 200 150 100 DELAY FROM FALL OF VCC1 0.01 0.1 1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 MAX6351/60-08 0 5V RPULLUP = 100kΩ CLOAD = 10pF 0 RESET THRESHOLD OVERDRIVE, VRST - VCC (V) MANUAL-RESET INPUT TO OUTPUT DELAY 5V RST1 PUSH-PULL OUTPUT www.maximintegrated.com DELAY FROM FALL OF VCC2 0 MAX6351/60-07 400ns/div 100 0 RESET THRESHOLD OVERDRIVE, VRST - VCC (V) RST2 PUSH-PULL OUTPUT 150 50 PULLUP CHARACTERISTICS OPEN-DRAIN OUTPUT 200 50 TEMPERATURE (°C) MAX6351/60-06 250 250 RESET DELAY (µs) 1.10 RESET OCCURS ABOVE LINE RESET DELAY vs. RESET THRESHOLD OVERDRIVE MAX6351/60-05 1.15 300 TRANSIENT DURATION (µs) MAX6351/60-04 1.20 NORMALIZED PERIOD MAXIMUM VCC TRANSIENT DURATION vs. RESET THRESHOLD OVERDRIVE NORMALIZED RESET/WATCHDOG PERIOD vs. TEMPERATURE 0 3V 0 MR 5V 0 RPULLUP = 100kΩ OPEN-DRAIN OUTPUT CLOAD = 10pF 5V 0 5V RST2 PUSH-PULL OUTPUT 0 RST1 PUSH-PULL OUTPUT 5V 0 40ns/div Maxim Integrated │  5 MAX6351–MAX6360 Dual/Triple-Voltage μP Supervisory Circuits Pin Description PIN MAX6351 MAX6352 MAX6353 MAX6354 MAX6355 MAX6356 MAX6357 MAX6358 MAX6359 MAX6360 NAME 1 — — — RST1 Active-Low, CMOS Reset Output Referenced to VCC1 DESCRIPTION — 1 1 1 RST Active-Low Reset Output. Open drain for the MAX6352/ MAX6355/MAX6358, push-pull with respect to VCC1 for the MAX6353/MAX6356/MAX6359, and push-pull with respect to VCC2 for the MAX6354/MAX6357/MAX6360. 2 2 2 2 GND Ground Manual-Reset Input. Pull low to force a reset. RST, RST1, and RST2 remain active as long as MR is low and for the timeout period after MR goes high. Leave unconnected or connect to VCC1 if unused. VMR must not exceed VCC1. 3 3 3 3 MR 4 4 4 4 VCC2 Supply Input. Powers the device when it is above VCC1 and monitors its own voltage. 5 — — — RST2 Active-Low, CMOS Reset Output Referenced to VCC2 RSTIN Undervoltage-Reset Comparator Input. Asserts reset when the monitored voltage falls below 1.22V. Set the reset threshold with an external resistive divider. Connect to VCC1 if unused. VRSTIN must not exceed VCC1. — — 5 — — — — 5 WDI Watchdog Input. If WDI remains either high or low longer than the timeout period, then reset is triggered. The timer clears when reset is asserted or whenever WDI sees a rising or falling edge. Leave unconnected to disable if unused. 6 5 6 6 VCC1 Supply Input. Powers the device when it is above VCC2 and monitors its own voltage. www.maximintegrated.com Maxim Integrated │  6 MAX6351–MAX6360 Dual/Triple-Voltage μP Supervisory Circuits Detailed Description Reset Outputs Supply Voltages The MAX6351–MAX6360 microprocessor (μP) supervisory circuits maintain system integrity by alerting the μP to fault conditions. These ICs monitor multiple-supply systems. The output reset state is guaranteed to remain viable while either VCC1 or VCC2 is above +1V. Threshold Levels All the possible input voltage threshold-level combinations are indicated by a two-letter code in the Voltage Threshold Levels table. 3 MR GLITCH FILTER (5) 6 VCC1 RST (1) 4 VCC2 VTH2 RST2 (5) RST1 (1) The MAX6355/MAX6356/MAX6357 provide an additional input to monitor a third voltage. The threshold voltage at RSTIN is typically 1.22V. To monitor a voltage higher than 1.22V, connect a resistive divider to the circuit, as shown in Figure 2. The threshold at VEXT is:  R1 + R2  VEXT_TH = 1.22V   R2   Watchdog Input (MAX6358/MAX6359/MAX6360) The MAX6358/MAX6359/MAX6360 include a dual-mode watchdog timer to monitor μP activity. The flexible timeout architecture provides a startup mode, allowing complicated systems to complete lengthy boots, and a normal mode, allowing the supervisor to provide quick alerts when processor activity fails. 1.22V (WDI) The MAX6351–MAX6360 are designed to ignore short negative-going VCC1 and VCC2 transients. See the Maximum VCC Transient Duration vs. Reset Threshold Overdrive graph in the Typical Operating Characteristics. Note that RSTIN is powered by VCC1, and its voltage must therefore remain lower than or equal to VCC1. (5) (RSTIN) (5) Negative-Going VCC Transients Third Input Voltage (MAX6355/MAX6356/MAX6357) VTH1 RESET GENERATOR The MAX6351 provides two active-low, push-pull reset outputs, one corresponding to each of its two monitored voltages. The MAX6353/MAX6356/MAX6359 have an active-low, push-pull reset output that is referenced to VCC1. The MAX6354/MAX6357/MAX6360 have an active-low, push-pull reset output that is referenced to VCC2. The MAX6352/MAX6355/MAX6358 provide an active-low open-drain reset. The reset outputs are maintained as long as at least one of the supplies is above +1V. WATCHDOG TIMER VEXT MAX6355 MAX6356 MAX6357 R1 2 RSTIN GND MAX6351–MAX6360 NOTE: PIN 1 IS RST1 FOR THE MAX6351 AND RST FOR THE MAX6352–MAX6360. PIN 5 IS RST2 FOR THE MAX6351, RSTIN FOR THE MAX6355/MAX6356/MAX6357, WDI FOR THE MAX6358/ MAX6359/MAX6360, AND VCC1 FOR THE MAX6352/MAX6353/MAX6354. Figure 1. Functional Diagram www.maximintegrated.com R2 VCC1 ≥ VRSTIN Figure 2. Monitoring a Third Voltage Maxim Integrated │  7 MAX6351–MAX6360 Dual/Triple-Voltage μP Supervisory Circuits During the normal operating mode, the supervisor issues a reset pulse for the reset timeout period (140ms min) if the μP does not update the WDI with a valid transition (high to low or low to high) within the standard timeout period (1.6s min). VCC2 VCC1 After each reset event (VCC power-up, manual reset, or watchdog reset), there is an initial watchdog startup timeout period of 25.6s. The startup mode provides an extended period for the system to power up and fully initialize all μP and system components before assuming responsibility for routine watchdog updates. The normal watchdog timeout period (1.6s min) begins at the conclusion of the startup timeout period or after the first transition on WDI before the conclusion of the startup period (Figure 3). Applications Information Ensuring a Valid RESET Output Down to VCC = 0 In some systems, it is necessary to ensure a valid reset even if VCC falls to 0. In these applications, use the circuit shown in Figure 4. Note that this configuration does not work for the open-drain outputs of the MAX6352/ MAX6355/MAX6358. Interfacing to μPs with Bidirectional Reset Pins Microprocessors with bidirectional reset pins contend with the push-pull outputs of these devices. To prevent this, connect a 4.7kΩ resistor between RESET and the μP’s reset I/O port, as shown in Figure 5. Buffer RESET, as shown in the figure, if this reset is used by other components in the system. RST VCC1 RST2 RST1 VCC2 100kΩ MAX6351 MAX6356 MAX6353 MAX6357 MAX6354 MAX6359 MAX6360 GND Figure 4. Ensuring a Valid Reset Low to VCC1 and VCC2 = 0 BUFFERED RESET TO OTHER SYSTEM COMPONENTS VCC2 VCC1 VCC1 VCC2 RST RST2 RST1 µP 4.7kΩ RESET MAX6351–MAX6360 GND GND VTH VCC WDI tWDI-NORMAL 1.6s MAX Figure 5. Interfacing to μPs with Bidirectional Reset I/O tWDI-STARTUP 25.6s MAX 1.6s MAX RESET 140ms Figure 3. Normal Watchdog Startup Sequence www.maximintegrated.com Maxim Integrated │  8 MAX6351–MAX6360 Dual/Triple-Voltage μP Supervisory Circuits Pin Configurations TOP VIEW RST1 1 GND 2 MAX6351 MR 3 6 VCC1 RST* 1 5 RST2 GND 2 4 VCC2 MR 3 GND 2 MAX6355 MAX6356 MAX6357 MR 3 VCC1 MAX6352 MAX6353 MAX6354 *MAX6352: OPEN-DRAIN OUTPUT *MAX6353: PUSH-PULL OUTPUT (VCC1) *MAX6354: PUSH-PULL OUTPUT (VCC2) 4 VCC2 6 VCC1 5 WDI 4 VCC2 5 SOT23 6 SOT23 RST* 1 5 6 VCC1 RST* 1 5 RSTIN *MAX6355: OPEN-DRAIN OUTPUT *MAX6356: PUSH-PULL OUTPUT (VCC1) *MAX6357: PUSH-PULL OUTPUT (VCC2) GND 2 4 VCC2 MAX6358 MAX6359 MAX6360 MR 3 6 SOT23 *MAX6358: OPEN-DRAIN OUTPUT *MAX6359: PUSH-PULL OUTPUT (VCC1) *MAX6360: PUSH-PULL OUTPUT (VCC2) 6 SOT23 Selector Guide PART PIN COUNT NUMBER OF SUPPLIES MONITORED MAX6351 6 2 MAX6352 5 2 MAX6353 5 2 ü MAX6354 5 2 MAX6355 6 3 MAX6356 6 MAX6357 6 MAX6358 RST2 OPEN-DRAIN RESET WATCHDOG TIMER MANUAL RESET ü ü — — ü — — ü — ü — — — ü — ü — — ü — — ü — ü 3 ü — — — ü 3 — ü — — ü 6 2 — — ü ü ü MAX6359 6 2 ü — — ü ü MAX6360 6 2 — ü — ü ü www.maximintegrated.com RST1 Maxim Integrated │  9 MAX6351–MAX6360 Chip Information PROCESS: BiCMOS www.maximintegrated.com Dual/Triple-Voltage μP Supervisory Circuits Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 5 SOT23 U5-1 21-0057 90-0174 6 SOT23 U6-1 21-0058 90-0175 Maxim Integrated │  10 MAX6351–MAX6360 Dual/Triple-Voltage μP Supervisory Circuits Revision History REVISION NUMBER REVISION DATE 7 5/14 PAGES CHANGED DESCRIPTION Changed the minimum value for the WDI input voltage spec in the Electrical Characteristics table on page 3; rebranded data sheet 1–11 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. ©  2014 Maxim Integrated Products, Inc. │  11
MAX6353LSUK+
物料型号: - MAX6351、MAX6352、MAX6353、MAX6354、MAX6355、MAX6356、MAX6357、MAX6358、MAX6359、MAX6360

器件简介: - 这些监控电路具有多个重置电压阈值,能够在任一输入电源电压下降至预设阈值时触发所有重置输出。

引脚分配: - 各型号有不同的引脚配置,包括地(GND)、手动重置输入(MR)、电源输入(VCC1、VCC2)、重置输出(RST1、RST2)、看门狗输入(WDI)和额外的电压监测输入(RSTIN)。

参数特性: - 包括精确监控多个电源电压、工厂设定的电源重置阈值、20μA的供电电流、最小100ms的上电复位脉冲宽度、消抖的TTL/CMOS兼容手动重置输入、看门狗定时器等。

功能详解: - 设计用于忽略短暂的电源电压下降,提供双模式看门狗定时器,具有启动模式和正常模式,以及确保在VCC下降至0V时仍能提供有效的重置输出。

应用信息: - 适用于计算机、控制器、便携/电池供电设备、智能仪器和多电压系统。

封装信息: - 提供5针和6针SOT23封装,操作温度范围为-40°C至+85°C。

订购信息: - 根据温度范围和封装类型进行订购,例如MAX6351 UT-T表示-40°C至+85°C的温度范围和6针SOT23封装。

绝对最大额定值和电气特性表格提供了详细的操作条件和参数,如供电电压、供电电流、阈值电压等。

典型操作特性图表展示了在不同条件下的复位电压和供电电流等。

引脚配置和选择指南提供了不同型号的封装视图和特性对比。

修订历史记录了数据手册的更新信息。
MAX6353LSUK+ 价格&库存

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