MAX6898:Ultra-Small, Adjustable Sequencing/Supervisory Circuits

The MAX6895–MAX6899 is a family of small, low-power, voltage-monitoring circuits with sequencing capability. These miniature devices offer tremendous flexibility with an adjustable threshold capable of monitoring 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 active-low OUT = low) when the input voltage rises above the 0.5V threshold and the enable input is asserted (ENABLE = high or active-low ENABLE = low). When the voltage at the input falls below 0.5V or when the enable input is deasserted (ENABLE = low or active-low ENABLE = high), the output deasserts (OUT = low or active-low OUT = high). All devices provide a capacitor-programmable delay time from when the input rises above 0.5V to when the output is asserted. The MAX689_A versions provide the same capacitor-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 output. 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 voltage 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.

Key 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
MAX6895, MAX6896, MAX6897, MAX6898, MAX6899: Typical Operating Circuit
MAX6895, MAX6896, MAX6897, MAX6898, MAX6899: Typical Operating Circuit
Applications/Uses
  • Automotive
  • Computers/Servers
  • Critical µP Monitoring
  • Intelligent Instruments
  • Medical Equipment
  • Portable Equipment
  • Set-Top Boxes
  • Telecom
DataSheet
titleDownload file
MAX6895-MAX6899 Data SheetMAX6895-MAX6899.pdf
Parametrics
Part NumberOptionInterfaceInput Chan.VIN
(V)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
maxSee Notes
MAX6895SequenceFactory Fixed
R/C Adjustable
1<6-40 to +125µDFN/6
TSOT/6
$0.83 @1k
MAX6896µDFN/6
TSOT/6
$0.65 @1k
MAX6897µDFN/6
TSOT/6
$0.66 @1k
MAX6898µDFN/6
TSOT/6
$0.65 @1k
MAX6899µDFN/6
TSOT/6
$0.84 @1k

Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureSupervisor FeaturesReset Thresh. Accur.
(%)
ICC
(µA)
Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
MAX68950 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active High
Push-Pull
1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
<1ms
>1s
Adjustable
No WatchdogAdjustable Reset Input
Overvoltage/Window Monitor
1.820µDFN/6
TSOT/6
$0.83 @1k
MAX6896Active Low
Push-Pull
µDFN/6
TSOT/6
$0.65 @1k
MAX6897Active High
Open Drain
µDFN/6
TSOT/6
$0.66 @1k
MAX6898Active Low
Open Drain
µDFN/6
TSOT/6
$0.65 @1k
MAX6899Active High
Push-Pull
µDFN/6
TSOT/6
$0.84 @1k
Quality and Environmental Data
Related Products
  • MAX6876:EEPROM-Programmable, Quad, Power-Supply Tracker/Sequencer Circuit
  • MAX6870:EEPROM-Programmable Hex/Quad Power-Supply Sequencers/Supervisors with ADC
  • MAX6819:SOT23 Power-Supply Sequencers
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6898AALT+ActiveµDFN,;6 pin;1.6 mm²-40°C to +125°CLead Free
MAX6898AALT+TActiveµDFN,;6 pin;1.6 mm²-40°C to +125°CLead Free
MAX6898AALT-TNo Longer AvailableMAX6898AALT+TµDFN,;6 pin;1.6 mm²-40°C to +125°CNo
MAX6898AAZT+ActiveTSOT,;6 pin;8.3 mm²-40°C to +125°CLead Free
MAX6898AAZT+TActiveTSOT,;6 pin;8.3 mm²-40°C to +125°CLead Free
MAX6898PALT+ActiveµDFN,;6 pin;1.6 mm²-40°C to +125°CLead Free
MAX6898PALT+TActiveµDFN,;6 pin;1.6 mm²-40°C to +125°CLead Free
MAX6898PALT-TNo Longer AvailableMAX6898PALT+TµDFN,;6 pin;1.6 mm²-40°C to +125°CNo
MAX6898PAZT+ActiveTSOT,;6 pin;8.3 mm²-40°C to +125°CLead Free
MAX6898PAZT+TActiveTSOT,;6 pin;8.3 mm²-40°C to +125°CLead Free
MAX6895-MAX6899.pdf MAX6899
MAX6898.pdf MAX6898
典型工作电路 MAX6899