MAX815 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX815 Datasheet PDF : 16 Pages
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±1% Accuracy, Low-Power, +3V and +5V
µP Supervisory Circuits
Reset Threshold
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 (VRT) is greater than or
equal to the minimum IC operating voltage (VICMIN).
The “K” series 1%-tolerance reset threshold allows a
larger range of power-supply tolerance. System ICs
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
4.5
4.75
5.0
5.25
5.5V
POWER-SUPPLY RANGE
(5.05V ±2%)
;; IC OPERATING RANGE
;;; RESET LIMITS “K”
(4.8V ±1%)
4.85
4.5
4.75
5.0
5.25
5.5V
POWER-SUPPLY RANGE
(5V ±5%)
;;; IC OPERATING RANGE
;;;;; RESET LIMITS “L”
(4.7V ±1%)
4.65
VRT > VIC(MIN)
DESIGNED TO MEET WORST-
CASE DESIGN PARAMETERS.
Figure 7a. K Suffix Design Range
4.5
4.75
5.0
5.25
5.5V
POWER-SUPPLY RANGE
(5V ±5%)
;;;;; IC OPERATING RANGE
;;;;; RESET LIMITS “N”
(4.55V ±1%)
4.60
VRT < VPS(MIN)
DESIGNED TO ALLOW OPERATION
OVER THE FULL POWER-SUPPLY RANGE.
Figure 7b. L Suffix Design Range
POWER-SUPPLY RANGE
(3.33V ±0.26%)
IC OPERATING RANGE
RESET LIMITS “T”
(3.03V ±1%)
;;;;; 3.0
3.3
3.6V
3.06
VRT > VIC(MIN)
DESIGNED TO MEET WORST-
CASE DESIGN PARAMETERS.
Figure 7c. N Suffix Design Range
VRT > VIC(MIN)
DESIGNED TO MEET WORST-
CASE DESIGN PARAMETERS.
Figure 7d. T Suffix Design Range
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