Details, datasheet, quote on part number: PI4S706THW
CategoryPower Management => Supervisory Circuits => Microprocessor Supervisors
Description4.63V Reset Active Low Supervisor
CompanyPericom Semiconductor Corporation
DatasheetDownload PI4S706THW datasheet
Cross ref.Similar parts: BQ2002, BQ2002C, BQ2002F, BQ2002G, BQ2002T, BQ24400, BQ24401, INA270, INA270A-Q1, INA271
Find where to buy


Features, Applications

Precision supply-voltage monitor PI4S708R) 200ms reset pulse width Debounced TTL/CMOS-compatible manualreset input Independent watchdog timer with 1.6sec time-out 706x, 706xH, and 813L ONLY Reset output signal: - Active-low only 706R) - Active-high only 706P) - Active-high and active-low 708S, 708R) Voltage monitor for power-fail or low battery warning Guaranteed RESET/RESET valid at VCC = 1.2V


The PI4S70xxx/PI4S813L family microprocessor (P) supervisory circuits are targeted to improve reliability and accuracy of power-supply circuitry in P systems. These devices reduce the complexity and number of components required to monitor power-supply and battery functions. The main functions are: 1. Asserting reset output during power-p, power-down and brownout conditions for P systems. 2. Detecting power failure or low-battery conditions with a 1.25V threshold detector. 3. Generating an independent watchdog output that goes low if the watchdog input has not been toggled within 1.6 seconds. 4. Asserting reset output with an active-low manual-reset input


Computers Controllers Intelligent Instruments Automotive Systems Printers Critical Microprocessor Power Monitoring

Pin Name MR VCC GND PFI PFO Type Input Power Ground Input Output Description Manual-Reset: triggers a reset pulse when pulled below 0.8V, active low. It has an internal 250A pull-up current and can be driven from a TTL or CMOS logic line as well as shorted to ground with a switch. Power Supply Ground Reference for all signals Power-Fail Voltage Monitor Input: When PFI is less than 1.25V, PFO goes low. Connect PFI to GND or Vcc when not used. Power-Fail Output: it gets low and sinks current when PFI is less than 1.25V; otherwise PFO stays high. Watchdog Input: If WDI remains high or low for 1.6sec, the internal watchdog timer runs out and WDO goes low. Floating WDI or connecting WDI to a high-impedance three-state buffer disables the watchdog feature. The internal watchdog timer clears whenever reset is asserted, WDI is three-stated, or WDI sees a rising or falling edge. No Connect Output Reset Output pulses: low for 200ms when triggered, and stays low whenever Vcc is below the reset threshold. It remains low for 200ms after VCC rises above the reset threshold or MR goes from low to high. A watchdog timeout will not trigger RESET unless WDO is connected to MR. Watchdog Output: pulls low when the internal watchdog timer finishes its 1.6sec count and does not go high again until the watchdog is cleared. WDO also goes low during low-line conditions. Whenever Vcc is below the reset threshold, WDO stays low; however, unlike RESET, WDO does not have minimum pulse width. As soon as VCC rises above the reset threshold, WDO goes high with no delay. The inverse of RESET: active high. Whenever RESET is high, RESET is low.


Related products with the same datasheet
Some Part number from the same manufacture Pericom Semiconductor Corporation
PI4S706TW 4.63V Reset Active Low Supervisor
PI5318A Precision Wide Bandwidth Analog Switch
PI5A100 Single Supply, High Speed, Quad SPDT CMOS Analog Switch W/master Enable
PI5A101 Single Supply, Quad SPST Analog Switch (NC)
PI5A121 High Speed SPST Analog Switch W/compact Packages
PI5A125 Single Wide Bandwidth Analog Switch
PI5A126 High Speed Dual SPST Analog Switch
PI5A3157 Sotiny Single SPDT Mux/demux Switch
PI5A3158 Sotiny Dual SPDT Mux/demux Switch
PI5A3159 Sotiny 1 Ohm, Low-Voltage, SPDT Analog Switch (3157 Pinout)
PI5A317A High Speed, Single Supply SPST Switch
PI5A318AP Precision Wide Bandwidth Analog Switch
PI5A319A High Speed, Single Supply SPST Switch
PI5A381A Precision Wide Bandwidth Analog Switches
PI5A383A High Speed, Single Supply Dual SPDT Switch
PI5A385A Precision Wide Bandwidth Analog Switch
PI5A391A 7V Quad SPST
PI5A4594A Sotiny Low-Voltage, Single-Supply, 8-Ohm SPST CMOS Analog Switches
PI5A4599A Sotiny Single SPDT Mux/demux Switch

PI74FCT540TR : CMOS/BiCMOS->FCT/FCT-T Family Inverting Octal Buffer/line Driver

PI2EQX3232B : 3.2gbps, 1-port, Sata2/sas Re-driver

PT7M8201A18TA5E : LDO Regulator The PT7M8201 series are highly accurate, low dropout voltage regulators with low noise, high ripple rejection and low current consumption. The PT7M8201 includes a reference voltage source, an error amplifier, a driver transistor, a current limit protection, a thermal pro

FD3430001 : 34.368MHz Oscillator Crystal And Oscillator XO (Standard); OSC 34.368MHZ 3.3V SMD Specifications: Frequency: 34.368MHz ; Package / Case: 4-SMD, No Lead (DFN, LCC) ; Packaging: Bulk ; Type: XO (Standard) ; Operating Temperature: -20C ~ 70C ; Frequency Stability: 25ppm ; Lead Free Status: Lead Free ; RoHS Status: RoHS Compliant

FN6400017 : 64MHz Oscillator Crystal And Oscillator XO (Standard); OSC 64MHZ 3.3V SMD Specifications: Frequency: 64MHz ; Package / Case: 4-SMD, No Lead (DFN, LCC) ; Packaging: Bulk ; Type: XO (Standard) ; Operating Temperature: -20C ~ 70C ; Frequency Stability: 50ppm ; Lead Free Status: Lead Free ; RoHS Status: RoHS Compliant

GC1000028 : QUARTZ CRYSTAL RESONATOR, 10 MHz Specifications: Package / Form Factor: Surface Mount, HALOGEN FREE, ROHS AND REACH COMPLIANT, SMD, 2 PIN ; Features / Standards: RoHS, Lead-Free ; Frequency: 10 MHz ; Load Capacitance: 15 pF ; Drive Level: 0.1000 milliwatts ; ESR: 60 ohms ; Operating Temperature: -40 to 85 C (-40 to 185 F)

PI6CV855-02LX : 6C SERIES, PLL BASED CLOCK DRIVER, 5 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO28 Specifications: Device Type: Clock Driver ; Package Type: Surface Mount, TSSOP, 4.40 MM, PLASTIC, TSSOP-48 ; Supply Voltage: 2.3 to 2.7 volts ; Skew: 100 ps ; Operating Temperature: 0.0 to 70 C (32 to 158 F) ; Features / Standards: RoHS, Lead-Free

PI74ALVTC16241AE : ALVT SERIES, QUAD 4-BIT DRIVER, INVERTED OUTPUT, PDSO48 Specifications: Technology: CMOS ; Device Type: Line / Bus Driver ; Supply Voltage: 2.5V ; Operating Temperature: -40 to 85 C (-40 to 185 F) ; Package Type: TSSOP, 0.240 INCH, 1.10 MM HEIGHT, 0.50 MM PITCH, PLASTIC, TSSOP-48 ; Pins: 48 ; Features: RoHS

PT7M8220B18ZE6E : 1.2 V FIXED POSITIVE LDO REGULATOR, 0.45 V DROPOUT, PDSO5 Specifications: Regulator Type: Low Dropout ; Output Polarity: Positive ; Output Voltage Type: Fixed ; Package Type: SOT23, Other, GREEN, MO-178CA, SOT-23, 5 PIN ; Life Cycle Stage: ACTIVE ; Output Voltage: 1.18 to 1.22 volts ; IOUT: 0.3000 amps ; VIN: 1.8 to 5.5 volts ; Dropout Voltage: 0.4500 volt

0-C     D-L     M-R     S-Z