Datasheet
the IN inputs only at power-up. Use the voltage-divider
circuit of Figure 1 and Equation 1 to set the threshold
for the user-adjustable inputs as described in the
Voltage-Detector Inputs (IN_)
section.
Manual Reset (MR)
Many microprocessor-based (µP) products require
manual reset capability to allow an operator or external
logic circuitry to initiate a reset. The manual reset input
(MR) can be connected directly to a switch without an
external pullup resistor or debouncing network. MR is
internally pulled up to DBP. Leave unconnected if not
used. MR is internally pulled up to DBP through a 10µA
current source. MR is designed to reject fast, falling
transients (typically 100ns pulses) and must be held low
for a minimum of 1µs to assert RESET. After MR transi-
tions from low to high, RESET remains asserted for the
duration of its timeout period.
MAX6886
Pin-Selectable, Hex Power-Supply
Supervisory Circuit
_______________________________________________________________________________________ 9
Table 1. Nominal Monitored Supply Voltages
NOMINAL SUPPLY VOLTAGES (V)
SELECTION TH4–TH0*
IN1 IN2 IN3 IN4 IN5 IN6
SUPPLY
TOLERANCE (%)
1 11111 5.0 3.3 2.5 1.8 ADJ ADJ 5
2 11110 5.0 3.0 2.5 1.8 ADJ ADJ 5
3 11101 5.0 3.3 2.5 ADJ ADJ ADJ 5
4 11100 5.0 3.0 2.5 ADJ ADJ ADJ 5
5 11011 5.0 3.3 1.8 ADJ ADJ ADJ 5
6 11010 5.0 3.0 1.8 ADJ ADJ ADJ 5
7 11001 5.0 3.3 ADJ ADJ ADJ ADJ 5
8 11000 5.0 3.0 ADJ ADJ ADJ ADJ 5
9 10111 3.3 2.5 1.8 ADJ ADJ ADJ 5
10 10110 3.0 2.5 1.8 ADJ ADJ ADJ 5
11 10101 3.3 2.5 ADJ ADJ ADJ ADJ 5
12 10100 3.0 2.5 ADJ ADJ ADJ ADJ 5
13 10011 3.3 1.8 ADJ ADJ ADJ ADJ 5
14 10010 3.0 1.8 ADJ ADJ ADJ ADJ 5
15 10001 3.3 2.5 1.8 1.5 ADJ ADJ 5
16 10000 3.0 2.5 1.8 1.5 ADJ ADJ 5
17 01111 5.0 3.3 2.5 1.8 ADJ ADJ 10
18 01110 5.0 3.0 2.5 1.8 ADJ ADJ 10
19 01101 5.0 3.3 2.5 ADJ ADJ ADJ 10
20 01100 5.0 3.0 2.5 ADJ ADJ ADJ 10
21 01011 5.0 3.3 1.8 ADJ ADJ ADJ 10
22 01010 5.0 3.0 1.8 ADJ ADJ ADJ 10
23 01001 5.0 3.3 ADJ ADJ ADJ ADJ 10
24 01000 5.0 3.0 ADJ ADJ ADJ ADJ 10
25 00111 3.3 2.5 1.8 ADJ ADJ ADJ 10
26 00110 3.0 2.5 1.8 ADJ ADJ ADJ 10
27 00101 3.3 2.5 ADJ ADJ ADJ ADJ 10
28 00100 3.0 2.5 ADJ ADJ ADJ ADJ 10
29 00011 3.3 1.8 ADJ ADJ ADJ ADJ 10
30 00010 3.0 1.8 ADJ ADJ ADJ ADJ 10
31 00001 3.3 2.5 1.8 1.5 ADJ ADJ 10
32 00000 ADJ ADJ ADJ ADJ ADJ ADJ —