MAX707CSA-T Maxim Integrated Products, MAX707CSA-T Datasheet - Page 5

• Manufacturer Part Number: MAX707CSA-T
• Description: Supervisory Circuits Single uPower Supervisor
• Manufacturer: Maxim Integrated Products

Specifications of MAX707CSA-T

• Number Of Voltages Monitored: 1
• Monitored Voltage: 4.65 V
• Undervoltage Threshold: 4.5 V
• Overvoltage Threshold: 4.75 V
• Output Type: Active High, Active Low, Push-Pull
• Manual Reset: Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 280 ms
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1 V
• Supply Current (typ): 350 uA
• Maximum Power Dissipation: 471 mW
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8 Narrow
• Minimum Operating Temperature: 0 C
• Power Fail Detection: Yes
• Lead Free Status / Rohs Status: No

______________________________________________________________Pin Description
DIP/SO
MAX705/MAX706
—
—
1
2
3
4
5
6
7
8
µMAX
—
—
3
4
5
6
7
8
1
2
_______________________________________________________________________________________
MAX707/MAX708
DIP/SO
—
—
1
2
3
4
5
6
7
8
PIN
µMAX
—
—
—
3
4
5
6
7
1
2
Low-Cost, µP Supervisory Circuits
DIP/SO
—
—
1
2
3
4
5
6
8
7
MAX813L
µMAX
—
—
3
4
5
6
7
8
2
1
RESET
RESET
NAME
WDO
GND
N.C.
PFO
WDI
V
MR
PFI
CC
Manual-Reset Input triggers a reset pulse when
pulled below 0.8V. This active-low input has an inter-
nal 250µA pull-up current. It can be driven from a TTL
or CMOS logic line as well as shorted to ground with
a switch.
+5V Supply Input
0V Ground Reference for all signals
Power-Fail Voltage Monitor Input. When PFI is less
than 1.25V, PFO goes low. Connect PFI to GND or
V
Power-Fail Output goes low and sinks current when
PFI is less than 1.25V; otherwise PFO stays high.
Watchdog Input. If WDI remains high or low for
1.6sec, the internal watchdog timer runs out and
WDO goes low (Figure 1). Floating WDI or connect-
ing WDI to a high-impedance three-state buffer dis-
ables the watchdog feature. The internal watchdog
timer clears whenever reset is asserted, WDI is three-
stated, or WDI sees a rising or falling edge.
No Connect
Active-Low Reset Output pulses low for 200ms when
triggered, and stays low whenever V
reset threshold (4.65V in the MAX705 and 4.40V in the
MAX706). It remains low for 200ms after V
above the reset threshold or MR goes from low to high
(Figure 3). A watchdog timeout will not trigger RESET
unless WDO is connected to MR.
Watchdog Output pulls low when the internal watch-
dog timer finishes its 1.6sec count and does not go
high again until the watchdog is cleared. WDO also
goes low during low-line conditions. Whenever V
below the reset threshold, WDO stays low; however,
unlike RESET, WDO does not have a minimum pulse
width. As soon as V
old, WDO goes high with no delay.
Active-High Reset Output is the inverse of RESET.
Whenever RESET is high, RESET is low, and vice
versa (Figure 2). The MAX813L has a RESET output
only.
CC
when not used.
CC
FUNCTION
rises above the reset thresh-
CC
is below the
CC
rises
CC
is
5