Features: `Precise monitoring of 3V, 3.3V, and 5V supply voltages
`Superior upgrade to MAX809/810
`Fully specified over temperature
` 140ms min. Power-On Reset pulse width, 240ms typical
Active-low RESET Output (LM809)
Active-high RESET Output (LM810)
`Guaranteed RESET Output valid for VCC1V
` Low Supply Current, 15µA typ.
` Power supply transient immunityApplication·Microprocessor Systems
· Computers
· Controllers
· Intelligent Instruments
·Portable/Battery-Powered Equipment
· AutomotiveSpecifications
| Power on Reset |
Yes |
| Watchdog |
No |
| Power Fail Input |
No |
| Manual Reset |
No |
| Reset Timeout Period |
240 ms |
| On/Off Pin |
No |
| Error Flag |
Yes |
| Input Max Voltage |
6 Volt |
| RegType |
Supervisor |
| Temperature Min |
-40 deg C |
| Temperature Max |
105 deg C |
| View Using Catalog |
VCC ..........................................................................................−0.3V to 6.0V
RESET, RESET ................................................................−0.3V to (VCC+ 0.3V)
Input Current, VCC Pin ..........................................................................20mA
Output Current, RESET, RESET
Pin ........................................................................................................20mA
Rate of Rise, VCC ..............................................................................100V/µs
ESD Rating (Note 2) ................................................................................2kV
Continuous Power Dissipation
(Note 4) ............................................................................................320mW
JA:
LLP-6 .............................................................................................152°C/W
SOT23-3 ........................................................................................326°C/W
Ambient Temperature Range ..........................................−40°C to +105°C
Maximum Junction Temperature ........................................................125°C
Storage Temperature Range ..........................................−65°C to +160°C
Lead Temperature (soldering,
10sec) .............................................................................................+300°CDescriptionThe LM810 microprocessor supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power-down and brown-out conditions.
The function of the LM809/810 is to monitor the VCC supply voltage, and assert a reset signal whenever this voltage declines below the factory-programmed reset threshold. The reset signal remains asserted for 240ms after VCC rises above the threshold. The LM809 has an active-low RESET# output, while the LM810 has an active-high RESET output.
Seven standard reset voltage options are available, suitable for monitoring 5V, 3.3V, and 3V supply voltages.
With a low supply current of only 15µA, the LM809/810 are ideal for use in portable equipment. The LM809/LM810 are available in the 3-pin SOT23 package and in the 6-Lead LLP package.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LM810M3-2.63 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM810M3-2.93 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM810M3-3.08 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM810M3-4.00 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM810M3-4.38 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM810M3-4.63 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM810M3X-2.63 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM810M3X-2.93 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM810M3X-3.08 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM810M3X-4.00 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM810M3X-4.38 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
| LM810M3X-4.63 |
CS065 |
2 |
34108 |
59 |
0 |
3862000 |
1 |
1095853045 |
Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.For more information on Reliability Metrics, please click here.
More Application Notes
| Title |
Size in Kbytes |
Date |
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| AN-1784: Application Note 1784 LMV1022 / LMV1023 Digital Output?PDM Microphone Amplifier Demo Board User's Guide |
3786 Kbytes |
6-Mar-08 |
Download |
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LM810 Data Sheet
