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MAX809SEUR+T

2.93V uP reset supervisor, push-pull RESET, 140ms timeout, 12uA Iq, SOT-23-3

4580

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Pieza del fabricante：

MAX809SEUR+T

Paquete：

3-pin SOT-23 (2.9 x 1.3 x 1.0mm)

Marca：
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Descripción

Productos

The MAX809SEUR+T is a 3-pin microprocessor reset circuit from Analog Devices (formerly Maxim Integrated) that monitors a 2.93V power supply threshold. It provides a push-pull active-low RESET output guaranteed valid for VCC down to 1V, with 140ms minimum power-on reset pulse width and only 12uA supply current.

Especificaciones

Reset Threshold 2.93V (S suffix)
Reset Output Push-pull, active-low
Reset Timeout 140ms minimum
Supply Current 12uA (typical)
RESET Valid for VCC >= 1V (guaranteed)
Threshold Accuracy +/-2.5%
Paquete 3-pin SOT-23
Temperatura de funcionamiento -40 to +105C

Características

  • Precision monitoring of 2.93V supply
  • Push-pull active-low RESET output
  • 140ms min power-on reset pulse width
  • Only 12uA supply current
  • RESET guaranteed valid to VCC = 1V
  • Power supply transient immunity
  • No external components required
  • Tiny 3-pin SOT-23 package

Aplicaciones

  • 3.3V/3.0V microprocessor systems
  • Portable battery-powered equipment
  • Critical microcontroller monitoring
  • Automotive ECU supervision

The MAX809SEUR+T is a 3-pin microprocessor reset circuit from Analog Devices monitoring a 2.93V supply threshold with push-pull active-low RESET output. The 140ms minimum power-on reset timeout ensures reliable processor initialization, while RESET is guaranteed valid for VCC down to 1V. Drawing only 12uA, the device requires no external components and fits in a tiny 3-pin SOT-23 package.

The MAX809 continuously compares VCC against an internal 2.93V reference threshold. When VCC drops below the threshold, RESET is asserted low. After VCC rises above the threshold, the internal timer maintains RESET low for at least 140ms to allow the power supply and processor to stabilize. The push-pull output stage provides strong drive without an external pullup resistor. Power supply transient immunity prevents false resets during brief voltage dips.

Pin Nombre Tipo Función
1 GND Suelo Referencia del suelo
2 RESET Salida Active-low reset output (push-pull)
3 VCC Potencia Supply voltage / monitor input
  • 3.3V microcontroller power-on reset
  • Battery-powered system voltage monitoring
  • Automotive ECU power supervision
  • FPGA configuration reset control
Fabricante Número de pieza Paquete Notas
ADI MAX810LEUR+T SOT-23-3 Active-high RESET version
TI TPS3823-33DBVR SOT-23-5 Watchdog + reset supervisor
onsemi NCP303LSN27T1G TSOP-5 2.7V reset, similar function
Microchip TC54VN2702ECB713 SOT-23-3 Voltage detector 2.7V
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