MAX6886 MAXIM [Maxim Integrated Products], MAX6886 Datasheet - Page 9

• Manufacturer Part Number: MAX6886
• Description: Pin-Selectable, Hex Power-Supply Supervisory Circuit
• Manufacturer: MAXIM [Maxim Integrated Products]

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.
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
Table 1. Nominal Monitored Supply Voltages
SELECTION TH4–TH0*
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
11111
11110
11101
11100
11011
11010
11001
11000
10111
10110
10101
10100
10011
10010
10001
10000
01111
01110
01101
01100
01011
01010
01001
01000
00111
00110
00101
00100
00011
00010
00001
00000
_______________________________________________________________________________________
ADJ
IN1
5.0
5.0
5.0
5.0
5.0
5.0
3.3
3.0
3.3
3.0
3.3
3.0
3.3
3.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
3.3
3.0
3.3
3.0
3.3
3.0
3.3
5.0
5.0
Pin-Selectable, Hex Power-Supply
Manual Reset ( MR )
ADJ
IN2
3.3
3.0
3.3
3.0
3.3
3.0
3.3
3.0
2.5
2.5
2.5
2.5
1.8
1.8
2.5
2.5
3.3
3.0
3.3
3.0
3.3
3.0
3.3
3.0
2.5
2.5
2.5
2.5
1.8
1.8
2.5
NOMINAL SUPPLY VOLTAGES (V)
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
IN3
2.5
2.5
2.5
2.5
1.8
1.8
1.8
1.8
1.8
1.8
2.5
2.5
2.5
2.5
1.8
1.8
1.8
1.8
1.8
(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.
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
IN4
1.8
1.8
1.5
1.5
1.8
1.8
1.5
Supervisory Circuit
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
IN5
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
ADJ
IN6
TOLERANCE (%)
SUPPLY
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
—
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
9