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Número de pieza | DS1817 | |
Descripción | Active High 3.3V EconoReset | |
Fabricantes | Dallas Semiconductor | |
Logotipo | ||
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DS1817
Active High 3.3V EconoReset
FEATURES
Automatically restarts a microprocessor after
power failure
Maintains reset for 150 ms after VCC returns
to an in-tolerance condition
Reduces need for discrete components
Precision temperature-compensated voltage
reference and voltage sensor
Accurate 5%, 10% or 20% power monitoring
20% tolerance for use with 3.0-volt systems
Low-cost TO-92 or space saving surface
mount SOT-23 packages available
Push-pull active high output
Operating temperature -40°C to +85°C
PIN ASSIGNMENT
3
12
SOT-23 PACKAGE
See Mech. Drawing
123
123
TO-92 PACKAGE
See Mech. Drawing
PIN DESCRIPTION
TO-92
1 RST
2 VCC
3 GND
Active High Reset Output
Power Supply
Ground
SOT-23
1 RST
2 VCC
3 GND
Active High Reset Output
Power Supply
Ground
DESCRIPTION
The DS1817 EconoReset uses a precision temperature reference and comparator circuit to monitor the
status of the power supply (VCC). When an out-of-tolerance condition is detected, an internal power-fail
signal is generated which forces reset to the active state. When VCC returns to an in-tolerance condition,
the reset signal is kept in the active state for approximately 150 ms to allow the power supply and
processor to stabilize.
1 of 5
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1 page DS1817
NOTES:
1. All voltages are referenced to ground.
2. wMwwe.DasautarSehdeewt4Uit.hcoVm CC ≥ 2.7V.
3. Measured with RST output open.
4. Measured with 2.7V ≥ VCC ≥ 3.3V.
5. tR = 5 µs.
6. The tF value is for reference in defining values for TRPD and should not be considered a requirement
for proper operation or use of the device.
PART MARKING CODES
SOT-23 PACKAGE
“A”, “B”, &“C” represent the Device Type.
810 - DS1810
811 - DS1811
812 - DS1812
813 - DS1813
815 - DS1815
816 - DS1816
817 - DS1817
818 - DS1818
“D” represents the Device Tolerance.
A-
5%
B-
10%
C-
15%
D-
20%
5 of 5
5 Page |
Páginas | Total 5 Páginas | |
PDF Descargar | [ Datasheet DS1817.PDF ] |
Número de pieza | Descripción | Fabricantes |
DS1810 | 5V EconoReset | Dallas Semiconductor |
DS1811 | 5V EconoReset | Dallas Semiconductor |
DS1812 | 5V EconoReset | Dallas Semiconductor |
DS1813 | 5V EconoReset | Dallas Semiconductor |
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