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Analog Devices MAX691ACWE+ — DC-DC Power Modules
Analog Devices

MAX691ACWE+ Battery Backup Circuit, 4.65V Threshold, 16-SOIC

MPNMAX691ACWE+
End of Life

Analog Devices MAX691ACWE+, Battery Backup Circuit supervisor, 1-channel voltage monitor, 4.65V threshold, 140ms minimum reset timeout, active high/active low push-pull outputs, 16-SOIC surface-mount package, 0°C to 70°C operating temperature.

$11.83Ref. price · indicative, final on quote
MAX691ACWE+ datasheet
Packaging16-SOIC (0.295", 7.50mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

MAX691ACWE+ Technical Specifications
ParameterValue
TypeBattery Backup Circuit
Mounting typeSurface Mount
Voltage - threshold4.65V
Number of voltages monitored1
Operating temperature0°C ~ 70°C (TA)
ResetActive High/Active Low
OutputPush-Pull, Push-Pull
PackageTube
Reset timeout140ms Minimum
Case16-SOIC (0.295\", 7.50mm Width)

Product details

A supervisor with battery-backup switchover

Both active-high and active-low reset outputs are available, each driven by a push-pull stage. That means no external pull-up resistors and the ability to interface with both reset-polarity conventions on the same board. The reset timeout is a minimum of 140ms, giving the system supply and oscillator enough time to settle before the processor starts executing code. For a 5V logic system, this part sits between the rail and the processor's reset input, with the backup battery connected to the VBAT pin.

Frequently asked questions

What is the difference between MAX691ACWE+ and MAX691ACPE+?

The difference is the package. MAX691ACWE+ is the 16-pin SOIC (surface-mount, 7.50mm width) variant, while MAX691ACPE+ is the 16-pin DIP (through-hole) variant. The electrical specifications — battery-backup circuit, 4.65V threshold, 140ms timeout, active high/low outputs — are identical between the two. The choice is purely a board-assembly decision: surface-mount reflow versus through-hole wave solder or socket.

Can I use MAX691ACWE+ as a replacement for MAX691?

The base MAX691 (without the ACWE+ suffix) is the same die in an older package or temperature grade. The MAX691ACWE+ is the commercial-temperature, surface-mount version. Electrically it is a drop-in replacement for any MAX691 function: same battery-backup switchover, same 4.65V threshold, same reset outputs. Verify the package fit — if the original was a DIP, the SOIC footprint will not match without an adapter.

What is MAX691ACWE+'s listed type and reset configuration?

Its listed type is Battery Backup Circuit, meaning it combines a voltage supervisor with automatic battery-switchover logic. Reset outputs are both active high and active low, push-pull, so no external pull-ups are needed.