首页 > 集成电路 IC > MAX809STRG

MAX809STRG


3-pin uP reset monitor, push-pull RESET, 4.63V threshold, SOT-23

3824

有效库存
转到查询

Image for reference only

您可能感兴趣的其他建议.
说明

产品概览

The MAX809STRG from onsemi is a 3-pin microprocessor reset circuit in a SOT-23 package. It provides a push-pull active-low RESET output that monitors VCC supply voltages for 2.5V, 3.0V, 3.3V, and 5.0V systems. With a minimum power-on reset pulse width of 140ms and ultra-low supply current of 0.5 µA, this device ensures reliable processor initialization without external components.

主要规格

功能 Microprocessor Reset Monitor
输出类型 Push-Pull Active-Low RESET
Reset Threshold 4.63V (S version, 5V system)
Reset Timeout 140ms minimum
Supply Current 0.5 µA typical at 3.2V
Operating Voltage 1.0V to 5.5V
工作温度 -40°C to +105°C
包装 SOT-23-3

特点

  • Precision VCC monitoring for 2.5V, 3.0V, 3.3V, and 5.0V supplies
  • 140ms minimum power-on reset pulse width
  • RESET output guaranteed valid to VCC = 1.0V
  • Ultra-low supply current (0.5 µA typical)
  • VCC transient immunity
  • No external components required
  • SOT-23 and SC-70 package options

应用

  • Embedded systems and microcontroller supervision
  • Battery-powered portable equipment
  • Computers, servers, and workstations
  • Critical microprocessor power supply monitoring
  • Intelligent instruments and automotive systems

The MAX809STRG from onsemi is a cost-effective microprocessor supervisory circuit designed to monitor power supply voltages in digital systems. It asserts an active-low RESET output whenever VCC declines below a preset threshold, maintaining the reset for at least 140ms after VCC rises above the threshold. The S suffix indicates a 4.63V threshold suitable for 5V systems. With supply current as low as 0.5 µA and no external components required, this device is ideal for battery-powered and space-constrained applications.

The MAX809STRG uses an internal voltage reference and comparator to continuously monitor the VCC supply. When VCC falls below the reset threshold (4.63V for the S version), the RESET output is driven low. After VCC rises above the threshold, an internal timeout counter keeps RESET low for a minimum of 140ms to ensure the microprocessor has stabilized before beginning execution. The push-pull output stage provides active drive in both directions, eliminating the need for an external pullup resistor. The device is designed to ignore fast transients on VCC, preventing false reset triggering.

针脚 名称 类型 功能
1 接地 地面 Ground connection
2 重置 输出 Active-low reset output (push-pull)
3 VCC 电源 Supply voltage input (monitored)
  • Embedded microcontroller systems requiring reliable power-on reset
  • Battery-powered portable devices needing ultra-low quiescent current
  • Computers, servers, and workstations for supply supervision
  • Automotive ECUs and intelligent instrument monitoring
  • Hot-plug applications requiring transient-immune reset protection
制造商 部件编号 包装 说明
模拟器件公司 MAX809TEUR+T SOT-23-3 Original Maxim version, 4.63V threshold
onsemi MAX810STRG SOT-23-3 Active-high RESET variant
onsemi MAX809MTRG SOT-23-3 4.38V threshold (M version)
TI TPS3823-33DBVR SOT-23-5 3.3V watchdog reset, 5-pin
微型芯片 MCP130T-300I/TT SOT-23-3 3.0V reset, open-drain
推荐部件
P-Channel MOSFET, -50V, -130mA, 10Ω RDS(on), SOT-23 logic-level switch

品牌:

封装:

SOT-23-3 (2.9×1.3×1.0 mm)
有库存:
10761pcs

货运周期:3~7 天
最低订购量为 1

转到查询
1.5W 18V Zener diode, SMA package, 5% tolerance, AEC-Q101, ESD Class 3

品牌:

封装:

SMA (DO-214AC) (4.32 x 2.6 x 2.0 mm)
有库存:
7948pcs

货运周期:3~7 天
最低订购量为 1

转到查询
1A, 1000V standard recovery rectifier, SMA package, glass passivated

品牌:

封装:

SMA (DO-214AC), 2.60 x 5.10 x 1.00 mm
有库存:
2409 件

货运周期:3~7 天
最低订购量为 1

转到查询
Dual bipolar op-amp, 4.5MHz GBW, 13V/μs slew, 3-44V single supply, SOIC-8

品牌:

封装:

SOIC-8 (3.9 x 4.9 x 1.5mm)
有库存:
3480pcs

货运周期:3~7 天
最低订购量为 1

转到查询
Dual automotive op-amp, 3-26V single supply, 1.1MHz GBW, AEC-Q100, SOIC-8

品牌:

封装:

SOIC-8 (3.9 x 4.9 x 1.25mm)
有库存:
2409 件

货运周期:3~7 天
最低订购量为 1

转到查询
60V 26A N-ch MOSFET, 16mOhm @10V, PQFN 3x3mm, low Qg

品牌:

封装:

PQFN-3×3 (Power33) (3.3 x 3.3 x 0.9 mm)
有库存:
10385pcs

货运周期:3~7 天
最低订购量为 1

转到查询
质量保证

我们从合作供应链采购的所有电子元件都经过严格的进货检验。通过仔细的测试,我们确保交付给客户的所有产品都是原装正品,符合质量要求。此外,我们还保存完整的检验记录,使整个供应链流程清晰可查。.

认证
我们获得了多项专业认证,并建立了自己的专业检测实验室,确保交付给客户的每一件产品都符合最高质量要求。我们严格按照流程进行检测,确保产品质量稳定、参数准确。为保证原装正品,我们还与可靠的第三方检测机构合作,进行严格的质量检测。我们始终高度重视质量,完全符合行业标准、相关法规和 ISO 9001:2015 的要求。.

发货与付款

我们从合作供应链采购的所有电子元件都经过严格的进货检验。通过仔细的测试,我们确保交付给客户的所有产品都是原装正品,符合质量要求。此外,我们还保存完整的检验记录,使整个供应链流程清晰可查。.

认证
我们获得了多项专业认证,并建立了自己的专业检测实验室,确保交付给客户的每一件产品都符合最高质量要求。我们严格按照流程进行检测,确保产品质量稳定、参数准确。为保证原装正品,我们还与可靠的第三方检测机构合作,进行严格的质量检测。我们始终高度重视质量,完全符合行业标准、相关法规和 ISO 9001:2015 的要求。.

服务与包装

我们从合作供应链采购的所有电子元件都经过严格的进货检验。通过仔细的测试,我们确保交付给客户的所有产品都是原装正品,符合质量要求。此外,我们还保存完整的检验记录,使整个供应链流程清晰可查。.

认证
我们获得了多项专业认证,并建立了自己的专业检测实验室,确保交付给客户的每一件产品都符合最高质量要求。我们严格按照流程进行检测,确保产品质量稳定、参数准确。为保证原装正品,我们还与可靠的第三方检测机构合作,进行严格的质量检测。我们始终高度重视质量,完全符合行业标准、相关法规和 ISO 9001:2015 的要求。.