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MAX706P/R/S/T
,MAX706AP/AR/AS/A
T
,MAX708R/S/T
+3V Voltage Monitoring, Low-Cost P
Supervisory Circuits
10
______________________________________________________________________________________
Ordering Information (continued)
Chip Information
PROCESS: CMOS
sees 1.25V when VIN falls to the desired trip point
(VTRIP). Resistor R3 adds hysteresis. R3 will typically
be an order of magnitude greater than R1 and R2. The
current through R1 and R2 should be at least 1A to
ensure that the 25nA (max) PFI input current does not
shift the trip point significantly. R3 should be larger than
10k
to prevent it from loading down the PFO pin.
Capacitor C1 adds noise rejection.
Monitoring a Negative Voltage
The power-fail comparator can be used to monitor a
negative supply voltage using the circuit of Figure 8.
When the negative supply is valid, PFO is low. When
the negative supply voltage drops, PFO goes high. This
circuit’s accuracy is affected by the PFI threshold toler-
ance, the VCC voltage, and resistors R1 and R2.
Bypassing VCC
For noisy systems, bypass VCC with a 0.1F capacitor
to GND.
PART
TEMP
RANGE
PIN-
PACKAGE
PKG
CODE
MAX706PEUA
-40°C to +85°C
8 MAX
U8-1
MAX706PMJA
-55°C to +125°C 8 CERDIP*
J8-2
MAX706RCPA
0°C to +70°C
8 Plastic Dip
P8-1
MAX706RCSA
0°C to +70°C
8 SO
S8-2
MAX706RCUA
0°C to +70°C
8 MAX
U8-1
MAX706REPA
-40°C to +85°C
8 Plastic Dip
P8-1
MAX706RESA
-40°C to +85°C
8 SO
S8-2
MAX706REUA
-40°C to +85°C
8 MAX
U8-1
MAX706RMJA
-55°C to +125°C 8 CERDIP*
J8-2
MAX706SCPA
0°C to +70°C
8 Plastic Dip
P8-1
MAX706SCSA
0°C to +70°C
8 SO
S8-2
MAX706SCUA
0°C to +70°C
8 MAX
U8-1
MAX706SEPA
-40°C to +85°C
8 Plastic Dip
P8-1
MAX706SESA
-40°C to +85°C
8 SO
S8-2
MAX706SEUA
-40°C to +85°C
8 MAX
U8-1
MAX706SMJA
-55°C to +125°C 8 CERDIP*
J8-2
MAX706TCPA
0°C to +70°C
8 Plastic Dip
P8-1
MAX706TCSA
0°C to +70°C
8 SO
S8-2
MAX706TCUA
0°C to +70°C
8 MAX
U8-1
MAX706TEPA
-40°C to +85°C
8 Plastic Dip
P8-1
MAX706TESA
-40°C to +85°C
8 SO
S8-2
MAX706TEUA
-40°C to +85°C
8 MAX
U8-1
MAX706TMJA
-55°C to +125°C 8 CERDIP*
J8-2
MAX706APEPA
-40°C to +85°C
8 Plastic Dip
P8-1
MAX706APESA
-40°C to +85°C
8 SO
S8-2
MAX706APEUA
-40°C to +85°C
8 MAX
U8-1
MAX706AREPA
-40°C to +85°C
8 Plastic Dip
P8-1
MAX706ARESA
-40°C to +85°C
8 SO
S8-2
MAX706AREUA
-40°C to +85°C
8MAX
U8-1
MAX706ASEPA
-40°C to +85°C
8 Plastic Dip
P8-1
PART
TEMP
RANGE
PIN-
PACKAGE
PKG
CODE
MAX706ASESA
-40°C to +85°C
8 SO
S8-2
MAX706ASEUA
-40°C to +85°C
8 MAX
U8-1
MAX706ATEPA
-40°C to +85°C
8 Plastic Dip
P8-1
MAX706ATESA
-40°C to +85°C
8 SO
S8-2
MAX706ATEUA
-40°C to +85°C
8 MAX
U8-1
MAX708RCPA
0°C to +70°C
8 Plastic Dip
P8-1
MAX708RCSA
0°C to +70°C
8 SO
S8-2
MAX708RCUA
0°C to +70°C
8 MAX
U8-1
MAX708REPA
-40°C to +85°C
8 Plastic Dip
P8-1
MAX708RESA
-40°C to +85°C
8 SO
S8-2
MAX708REUA
-40°C to +85°C
8 MAX
U8-1
MAX708RMJA
-55°C to +125°C
8 CERDIP*
J8-2
MAX708SCPA
0°C to +70°C
8 Plastic Dip
P8-1
MAX708SCSA
0°C to +70°C
8 SO
S8-2
MAX708SCUA
0°C to +70°C
8 MAX
U8-1
MAX708SEPA
-40°C to +85°C
8 Plastic Dip
P8-1
MAX708SESA
-40°C to +85°C
8 SO
S8-2
MAX708SEUA
-40°C to +85°C
8 MAX
U8-1
MAX708SMJA
-55°C to +125°C
8 CERDIP*
J8-2
MAX708TCPA
0°C to +70°C
8 Plastic Dip
P8-1
MAX708TCSA
0°C to +70°C
8 SO
S8-2
MAX708TCUA
0°C to +70°C
8 MAX
U8-1
MAX708TEPA
-40°C to +85°C
8 Plastic Dip
P8-1
MAX708TESA
-40°C to +85°C
8 SO
S8-2
MAX708TEUA
-40°C to +85°C
8 MAX
U8-1
MAX708TMJA
-55°C to +125°C
8 CERDIP*
J8-2
SO, MAX, and PDIP packages are available in lead-free.
*Contact factory for availability and processing to MIL-STD-883.