General Description
The MAX6895–MAX6899 is a family of small, low-pow-
er, voltage-monitoring circuits with sequencing
capability. These miniature devices offer tremendous
flexibility with an adjustable threshold capable of monitor-
ing down to 0.5V and an external capacitor-adjustable time
delay. These devices are ideal for use in power-supply
sequencing, reset sequencing, and power-switching
applications. Multiple devices can be cascaded for complex
sequencing applications.
A high-impedance input with a 0.5V threshold allows an
external resistive divider to set the monitored threshold.
The output asserts (OUT = high or OUT = low) when
the input voltage rises above the 0.5V threshold and
the enable input is asserted (ENABLE = high or
ENABLE = low). When the voltage at the input falls
below 0.5V or when the enable input is deassert-
ed (ENABLE = low or ENABLE = high), the output
deasserts (OUT = low or OUT = high). All devices
provide a capacitor-programmable delay time from when
the input rises above 0.5V to when the output is assert-
ed. The MAX689_A versions provide the same capaci-
tor-adjustable delay from when enable is asserted to
when the output asserts. The MAX689_P devices have
a 1µs propagation delay from when enable is asserted
to when the output asserts.
The MAX6895A/P offers an active-high enable input
and an active-high push-pull output. The MAX6896A/P
offers an active-low enable input and an active-low
push-pull output. The MAX6897A/P offers an active-
high enable input and an active-high open-drain
out-put. Finally, the MAX6898A/P offers an active-low
enable input and an active-low open-drain output. The
MAX6899A/P offers an active-low enable with an active-
high push-pull output.
All devices operate from a 1.5V to 5.5V supply volt-
age and are fully specified over the -40°C to +125°C
operating temperature range. These devices are
available in ultra-small 6-pin µDFN (1.0mm x 1.5mm) and
thin SOT23 (1.60mm x 2.90mm) packages.
Applications
Features
●1.8% Accurate Adjustable Threshold Over
Temperature
● Operate from VCC of 1.5V to 5.5V
● Capacitor-Adjustable Delay
● Active-High/-Low Enable Input Options
● Active-High/-Low Output Options
● Open-Drain (28V Tolerant)/Push-Pull Output
Options
● Low Supply Current (10µA, typ)
● Fully Specified from -40°C to +125°C
● Ultra-Small 6-Pin µDFN Package or Thin SOT23
Package
●Automotive
●Medical Equipment
●Intelligent Instruments
●Portable Equipment
●Computers/Servers
●Critical µP Monitoring
●Set-Top Boxes
●Telecom
19-3673; Rev 10; 3/14
Note: All devices are specified over the -40°C to +125°C
operating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part; T = Tape and reel.
Typical Operating Circuit and Selector Guide appear at end
of data sheet.
Ordering Information continued at end of data sheet.
Pin Configurations continued at end of data sheet.
PART PIN-PACKAGE TOP MARK
MAX6895AALT+ 6 µDFN +AW
MAX6895AAZT+ 6 Thin SOT23 +AADK
MAX6895PALT+T 6 µDFN +AX
MAX6895PAZT+ 6 Thin SOT23 +AADL
MAX6896AALT+ 6 µDFN +AY
MAX6896AAZT+ 6 Thin SOT23 +AADO
MAX6896AAZT/V+T 6 Thin SOT23 +AATA
MAX6896PALT+T 6 µDFN +AZ
MAX6896PAZT+ 6 Thin SOT23 +AADP
MAX6896PAZT/V+T 6 Thin SOT23 —
1 2 3
6 5 4
OUT
( ) FOR MAX6899 ONLY.
VCC CDELAY
ENABLE
(ENABLE)
INGND
MAX6895
MAX6897
MAX6899
µDFN
TOP VIEW
MAX6895–MAX6899 Ultra-Small, Adjustable Sequencing/
Supervisory Circuits
Pin Congurations
Ordering Information