Skip to main content
Log in
MAX6703LKA

MAX6703LKA Power Supply Monitor, 3-Channel, SOT-23-8

MPNMAX6703LKA
End of Life

Maxim Integrated MAX6703LKA, Power Supply Monitor, 3-Channel, Active Low Reset, Open Drain Output, 120ms Minimum Reset Timeout, SOT-23-8, -40°C to 125°C.

$2.74Ref. price · indicative, final on quote
Analog Devices MAX6703LKA datasheet (PDF)
PackagingSOT-23-8
RoHSRoHS non-compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MAX6703LKA specifications
ParameterValue
TypePower Supply Monitor
MountingSurface Mount
Voltage - threshold4.63V, Adj, Adj
Number of voltages monitored3
Operating temperature-40°C ~ 125°C (TA)
ResetActive Low
OutputOpen Drain or Open Collector
PackageBulk
Reset timeout120ms Minimum
CaseSOT-23-8

Product details

Three-voltage supervisor in a SOT-23-8 footprint

This is a standard duration for most MCU and DSP reset inputs, but if your system needs a faster restart, you will need an external watchdog or a supervisor with a programmable timeout.

The MAX6703LKA is listed as RoHS non-compliant. This is an important flag for any design targeting lead-free assembly per EU RoHS directives. There is no last-time-buy or end-of-life pressure. However, the RoHS restriction may limit its use in new designs for European markets or medical devices.

For volume production commitments, we can support blanket orders with scheduled releases. The RoHS non-compliant status means we verify date-code and marking consistency on every lot to ensure the parts match the original Maxim factory specifications.

Frequently asked questions

How many voltages does MAX6703LKA monitor?

The MAX6703LKA monitors three voltages: one fixed at 4.63V threshold and two adjustable via external resistor dividers. This allows supervision of a 5V rail plus two lower-voltage rails such as 3.3V and 1.8V.

Is MAX6703LKA equivalent to MAX6703?

The MAX6703LKA is a specific package variant of the MAX6703 family in SOT-23-8. The base MAX6703 part number may refer to a different package (e.g., DIP or SOIC) or a different temperature grade. Verify the package code and temperature range on your BOM before substituting. The LKA suffix specifically denotes the SOT-23-8 package and -40°C to 125°C range.

What are the replacement options for MAX6703LKA?

Within the same family, an RoHS-compliant variant (if available) would be the direct replacement. Pin-compatible supervisors from other manufacturers exist with similar threshold options, but the adjustable channels and open-drain output must match. Cross-reference against Maxim's own MAX6700 series or Texas Instruments TPS3xxx series for form-fit-function alternatives. Confirm the reset timeout and threshold accuracy against your system requirements before substituting.

What is MAX6703LKA's listed type?

The MAX6703LKA is listed as a Power Supply Monitor. It is a voltage supervisor IC that monitors up to three supply rails and asserts a reset signal when any rail falls below its threshold.