G690H400T73

G690H400T73

  • 厂商:

    GMT(致新科技)

  • 封装:

  • 描述:

    G690H400T73 - Microprocessor Reset IC - Global Mixed-mode Technology Inc

  • 详情介绍
  • 数据手册
  • 价格&库存
G690H400T73 数据手册
Global Mixed-mode Technology Inc. G690/G691 Microprocessor Reset IC Features Precision Monitoring of +3V, +3.3V, and +5V Power-Supply Voltages General Description The G690/G691 are microprocessor (µP) supervisory circuits used to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V, +3.3V, +3.0V- powered circuits. These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for at least 140ms after VCC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available. The G691L has an open-drain output stage, while the G690 have push-pull outputs. The G691L’s open-drain RESET output requires a pull-up resistor that can be connected to a voltage higher than VCC. The G690L have an active-low RESET output, while the G690H has an active-high RESET output. The reset comparator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1V. Low supply current makes the G690/G691 ideal for use in portable equipment. The G690/G691 are available in 3-pin SOT89 or SOT23 or SC70 packages. Fully Specified Over Temperature Available in Three Output Configurations Push-Pull RESET Output (G690L) Push-Pull RESET Output (G690H) Open-Drain RESET Output (G691L) 140ms min Power-On Reset Pulse Width 10µA Supply Current Guaranteed Reset Valid to VCC = +1V Power Supply Transient Immunity No External Components 3-Pin SOT89, SOT23 and SC70 Packages Applications Computers Controllers Intelligent Instruments Critical µP and µC Power Monitoring Portable / Battery-Powered Equipment Automotive Pin Configuration Typical Application VCC 3 VCC RPULL-UP* VCC G690/G691 RESET (RESET) 1 2 3 1 2 GND RESET RESET INPUT µP GND SOT 89 SOT23/SC70 *G691 ONLY Ver: 1.3 Oct 31, 2002 TEL: 886-3-5788833 http://www.gmt.com.tw 1 Global Mixed-mode Technology Inc. Ordering Information PART G690LxxxTxx G690HxxxTxx G691LxxxTxx TEMP. RANGE -40°C ~ +105°C -40°C ~ +105°C -40°C ~ +105°C G690/G691 OUTPUT TYPE Push-Pull Active Low Push-Pull Active High Open-Drain Order Number Identification G69XX XXX TX X Pin Option Package Type Threshold Voltage Option Part Number PART NUMBER G690L : Push-Pull Active Low Output G690H : Push-Pull Active High Output G691L : Open-Drain Output THRESHOLD VOLTAGE OPTION * xxx specifies the threshold voltage. e.g. 263 denotes the 2.63V threshold voltage. PACKAGE TYPE T2 : SOT 89 T7 : SOT 23 T9 : SC 70 PIN OPTION 1 1 : RESET 2 : RESET 3 : GND 4 : GND 5 : VCC 6 : VCC *RESET for G690H 2 GND VCC RESET 3 VCC GND VCC RESET RESET VCC GND RESET GND Ver: 1.3 Oct 31, 2002 TEL: 886-3-5788833 http://www.gmt.com.tw 2 Global Mixed-mode Technology Inc. Absolute Maximum Ratings Terminal Voltage (with respect to GND) VCC.……………………………..…….…….-0.3V to +6.0V RESET, RESET (push-pull)....…....-0.3V to (VCC + 0.3V) RESET (open drain)...….......................-0.3V to +6.0V Input Current, VCC ............................….................20mA Output Current, RESET, RESET ........................20mA G690/G691 Continuous Power Dissipation (TA = +70°C) 3-Pin SOT89……………………………………….500mW 3-Pin SOT23 (derate 4mW/°C above +70°C)….320mW 3-Pin SC70 (derate 2.17mW/°C above +70°C)..174mW Operating Temperature Range …........-40°C to +105°C Storage Temperature Range..….….….-65°C to +150°C Lead Temperature (soldering, 10s) ..…....…......+300°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 (VCC = full range, TA = -40°C to +105°C, unless otherwise noted. Typical values are at TA = +25°C, VCC = 5V for 463/438/400 versions, VCC= 3.3V for 308/293 versions, and VCC = 3V for 263 version.) (Note 1) PARAMETER VCC Range Supply Current (SOT23) ICC SYMBOL TA = 0°C +70°C TA = -40°C +105°C CONDITION MIN 1.0 1.2 TYP MAX UNITS 5.5 5.5 30 23 4.70 4.75 4.86 4.45 4.50 4.56 4.06 4.10 4.20 3.11 3.15 3.23 2.96 3.00 3.08 2.66 2.70 2.76 V µA TA = -40°C +105°C VCC
G690H400T73
物料型号: - G690LxxxTxx:Push-Pull Active Low输出类型,工作温度范围-40°C至+105°C。 - G690HxxxTxx:Push-Pull Active High输出类型,工作温度范围-40°C至+105°C。 - G691LxxxTxx:Open-Drain输出类型,工作温度范围-40°C至+105°C。

器件简介: - G690/G691是微处理器监控电路,用于监控微处理器和数字系统的电源。它们通过消除外部组件和调整,提供出色的电路可靠性和低成本。这些电路执行单一功能:每当供电电压$V_{CC}$下降至预设阈值以下时,它们就会断言一个复位信号,并在$V_{CC}$升至复位阈值以上后至少保持140ms。

引脚分配: - GND(1):地。 - RESET(2):复位输出,对于G691L/G690L来说,当Vcc低于复位阈值时,以及在Vcc上升超过复位阈值后的至少140ms内,复位输出保持低电平;对于G690H来说,复位输出保持高电平。 - Vcc(3):供电电压(+5V、+3.3V、+3.0V)。

参数特性: - 工作电压范围:+3V、+3.3V和+5V。 - 复位脉冲宽度:最小140ms。 - 供电电流:10µA。 - 保证复位有效至$V_{CC}=+1V$。 - 电源瞬态免疫。 - 不需要外部组件。 - 封装类型:3引脚SOT89、SOT23和SC70。

功能详解: - G690/G691在电源电压下降至预设阈值以下时断言复位信号,以防止在上电、掉电或电源波动期间出现代码执行错误。G691L使用开漏输出,而G690L/G690H具有推挽输出阶段。 - 对于G691L,需要在RESET输出上连接上拉电阻,可以连接到0至5.5V的任意供电。

应用信息: - 除了在上电、掉电和电源波动期间向微处理器发出复位外,G691L/G690H/G690L相对不受短时负向$V_{CC}$瞬态(毛刺)的影响。 - 当$VCC$下降至1V以下时,G690的RESET输出不再吸收电流,因此需要外部下拉电阻以保持RESET输出有效。

封装信息: - 提供了SOT-89(T2)、SOT-23(T7)和SC70(T9)三种封装的详细尺寸信息。
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