MAX815LESA+ Maxim Integrated Products, MAX815LESA+ Datasheet - Page 10

• Manufacturer Part Number: MAX815LESA+
• Description: IC SUPERVISOR MPU LP 8SOIC
• Manufacturer: Maxim Integrated Products
• Type: Simple Reset/Power-On Resetr

Specifications of MAX815LESA+

• Number Of Voltages Monitored: 1
• Output: Push-Pull, Totem Pole
• Reset: Active Low
• Reset Timeout: 140 ms Minimum
• Voltage - Threshold: 4.7V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Monitored Voltage: 1.2 V to 5.5 V
• Undervoltage Threshold: 4.65 V
• Overvoltage Threshold: 4.75 V
• Output Type: Active Low, Push-Pull
• Manual Reset: Resettable
• Watchdog: Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 250 ms
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.2 V
• Supply Current (typ): 85 uA
• Maximum Power Dissipation: 471 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX814/MAX815 have fixed, factory-set reset
thresholds, signified by the first suffix letter in the part
number (see Figure 7 for more information on reset
ranges). The MAX816 has an adjustable reset threshold.
MAX814/MAX815 K-suffix parts have a minimum reset
threshold set to 4.75V, worst case. They are intended
for 5.0V systems with a ±4% or better power-supply tol-
erance design that must meet worst-case system para-
meters over time, temperature, line, and load variations.
Typically, the reset threshold (V
equal to the minimum IC operating voltage (V
The “K” series 1%-tolerance reset threshold allows a
larger range of power-supply tolerance. System ICs
±1% Accuracy, Low-Power, +3V and +5V
µP Supervisory Circuits
Figure 7a. K Suffix Design Range
Figure 7c. N Suffix Design Range
10
POWER-SUPPLY RANGE
(5.05V ±2%)
IC OPERATING RANGE
RESET LIMITS “K”
(4.8V ±1%)
POWER-SUPPLY RANGE
(5V ±5%)
IC OPERATING RANGE
RESET LIMITS “N”
(4.55V ±1%)
______________________________________________________________________________________
4.5
4.5
4.60
V
DESIGNED TO MEET WORST-
CASE DESIGN PARAMETERS.
V
DESIGNED TO MEET WORST-
CASE DESIGN PARAMETERS.
4.75
RT
4.75
RT
> V
> V
4.85
IC(MIN)
IC(MIN)
RT
5.0
5.0
Reset Threshold
) is greater than or
5.25
5.25
5.5V
5.5V
ICMIN
).
that have a tight operating supply range, like the
386/486 µPs, need a RESET initiated at a minimum
threshold of 4.75V, worst case.
L-suffix parts have a minimum reset threshold set to
4.65V, worst case. They are intended for 5.0V systems
with a ±5% power-supply tolerance. Typically, the reset
threshold is less than or equal to the minimum power-
supply voltage, allowing system operation over the
complete power-supply range. A reset is initiated at
4.75V maximum. The 1% “L” version maximizes the
System IC Guard-Band Range.
N-suffix parts have a minimum reset threshold set to
4.50V, worst case. They are intended for 5.0V systems
with a ±10% IC system. Typically, the reset threshold
Figure 7b. L Suffix Design Range
Figure 7d. T Suffix Design Range
POWER-SUPPLY RANGE
(5V ±5%)
IC OPERATING RANGE
RESET LIMITS “L”
(4.7V ±1%)
POWER-SUPPLY RANGE
(3.33V ±0.26%)
IC OPERATING RANGE
RESET LIMITS “T”
(3.03V ±1%)
4.5
V
DESIGNED TO ALLOW OPERATION
OVER THE FULL POWER-SUPPLY RANGE.
RT
4.65
< V
4.75
PS(MIN)
V
DESIGNED TO MEET WORST-
CASE DESIGN PARAMETERS.
3.0
RT
> V
3.06
IC(MIN)
5.0
3.3
5.25
3.6V
5.5V