MAX16000 Datasheet, PDF (1/26 Pages) Maxim Integrated Products – Low-Voltage, Quad-/Hex-/Octal-Voltage μP Supervisors

19-3870; Rev 3; 12/08
Low-Voltage, Quad-/Hex-/Octal-Voltage
µP Supervisors
General Description
The MAX16000–MAX16007 are low-voltage, quad-/hex-/
octal-voltage µP supervisors in small thin QFN and TSSOP
packages. These devices provide supervisory functions for
complex multivoltage systems. The MAX16000/
MAX16001/MAX16002 monitor four voltages, the
MAX16003/MAX16004/MAX16005 monitor six voltages,
and the MAX16006/MAX16007 monitor eight voltages.
The MAX16000/MAX16001/MAX16003/MAX16004/
MAX16006 offer independent outputs for each moni-
tored voltage. The MAX16001/MAX16002/MAX16004–
MAX16007 offer a reset output that asserts whenever
any of the monitored voltages fall below their respective
thresholds or the manual reset input is asserted. The
reset output remains asserted for the reset timeout after
all voltages are above their respective thresholds and
the manual reset input is deasserted. The minimum
reset timeout is internally set to 140ms or can be adjust-
ed with an external capacitor.
All open-drain outputs have internal 30µA pullups that
eliminate the need for external pullup resistors.
However, each output can be driven with an external
voltage up to 5.5V. Other features offered include a
manual reset input, a tolerance pin for selecting 5% or
10% input thresholds, and a margin enable function for
deasserting the outputs during margin testing.
The MAX16001/MAX16002/MAX16004–MAX16007 offer
a watchdog timer that asserts RESET or an indepen-
dent watchdog output (MAX16005) when the watchdog
timeout period (1.6s typ) is exceeded. The watchdog
timer can be disabled by floating the input.
These devices are offered in 12-, 16-, 20-, and 24-lead
thin QFN and 16-lead TSSOP packages. These are fully
specified from -40°C to +125°C.
Applications
Storage Equipment
Servers
Networking/Telecommunication Equipment
Multivoltage ASICs
Selector Guide appears at end of data sheet.
Features
o Fixed Thresholds for 5V, 3.3V, 3V, 2.5V, 1.8V,
1.5V, 1.2V, and 0.9V Systems
o Adjustable Thresholds Monitor Voltages Down to
0.4V
o Open-Drain Outputs with Internal Pullups Reduce
the Number of External Components
o Fixed 140ms (min) or Capacitor-Adjustable Reset
Timeout
o Manual Reset, Margin Enable, and Tolerance
Select Inputs
o Watchdog Timer
1.6s (typ) Timeout Period
54s Startup Delay After Reset (Except MAX16005)
o Independent Watchdog Output (MAX16005)
o RESET Output Indicates All Voltages Present
o Independent Voltage Monitors
o Guaranteed Correct Logic State Down to V_CC = 1V
o Small (4mm x 4mm) Thin QFN Package
o TSSOP (5mm x 4.4mm) Package (MAX16005)
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX16000_TC+
-40°C to +125°C
12 TQFN-EP*
Note: The “_” is a placeholder for the input voltage threshold.
See Table 1.
+Denotes lead(Pb)-free/RoHS-compliant package.
For tape-and-reel, add a “T” after the “+.” Tape-and-reel are
offered in 2.5k increments.
*EP = Exposed pad.
Ordering Information continued at end of data sheet.
Typical Operating Circuit
V_CC SRT
V_IN1
IN1
MARGIN
V_IN2
IN2
V_IN3
IN3 MAX16005
µP
V_IN4
IN4
RESET
RST
V_IN5
IN5
WDI
I/O
V_IN6
IN6
WDO
NMI
MR
GND TOL
________________________________________________________________ Maxim Integrated Products 1
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