MAX6388XS31D2-T Maxim Integrated, MAX6388XS31D2-T Datasheet - Page 7

• Manufacturer Part Number: MAX6388XS31D2-T
• Description: Supervisory Circuits
• Manufacturer: Maxim Integrated
• Series: MAX6381, MAX6382, MAX6383, MAX6384, MAX6385, MAX6386, MAX6387, MAX6388, MAX6389, MAX6390r

Specifications of MAX6388XS31D2-T

• Number Of Voltages Monitored: 2
• Monitored Voltage: 1.8 V to 5 V
• Undervoltage Threshold: 3 V, Adjustable
• Overvoltage Threshold: 3.15 V, Adjustable
• Output Type: Active High, Push-Pull
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 40 ms
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SC-70
• Chip Enable Signals: No
• Maximum Power Dissipation: 245 mW
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Supply Current (typ): 7 uA
• Supply Voltage - Min: 1 V

Figure 1. RESET IN Configuration
* The MAX6390 has a 1120ms or 1200ms RESET timeout and a
140ms or 150ms manual reset timeout.
a negative-going pulse applied to V
the actual reset threshold and ending below it by the
magnitude indicated (reset comparator overdrive). The
graph indicates the typical maximum pulse width a neg-
ative-going V
reset pulse to be issued. As the magnitude of the tran-
sient increases (goes farther below the reset threshold),
the maximum allowable pulse width decreases. A 0.1µF
capacitor mounted as close as possible to V
additional transient immunity.
The MAX6381–MAX6390 are guaranteed to operate
properly down to V
valid reset levels down to V
to active-low outputs (push/pull only, Figure 2) and a
pullup resistor to active-high outputs (push/pull only)
will ensure that the reset line is valid while the reset out-
put can no longer sink or source current. This scheme
V
R1
R2
IN
MAX6390_ _D4
MAX6390_ _D7
SUFFIX
D1
D2
D3
D5
D6
D4
D7
CC
transient may have without causing a
CC
RESET IN
Reset Timeout Delay
Output Down to V
= 1V. In applications that require
Ensuring a Valid RESET
SC70/µDFN, Single/Dual Low-Voltage,
MAX6387
MAX6388
MAX6389
CC
V
GND
CC
= 0V, a pulldown resistor
(RESET)
1120/140ms*
1200/150ms*
RESET
CC
( ) IS FOR MAX6388
1120ms
1200ms
140ms
280ms
560ms
20ms
, starting above
MIN
1ms
CC
Low-Power µP Reset Circuits
CC
provides
= 0V
does not work with the open-drain outputs of the
MAX6383/MAX6386/MAX6389/MAX6390. The resistor
value used is not critical, but it must be small enough
not to load the reset output when V
reset threshold. For most applications, 100kΩ is ade-
quate.
Figure 2. RESET Valid to V
MAX6390
MAX638_
PART
THRESHOLD
MAX6381
MAX6384
MAX6387
V
GND
RESET
CC
CC
46
44
31
29
26
23
22
17
16
46
44
31
29
26
23
22
17
16
= Ground Circuit
Standard Versions
RESET
RESET TIMEOUT
CC
is above the
100k
R1
D3
D4
7