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SP809NEK-L-3-1/TR The Exar SP809NEK-L-3-1/TR is a low-power microprocessor supervisory circuit designed for monitoring power supplies in digital systems. It features ultra-low supply current and a guaranteed reset valid down to 0.9V.
Mfr Part #:

SP809NEK-L-3-1/TR

Available from 2 distributors
Mfr Name: Exar
Exar
The Exar SP809NEK-L-3-1/TR is a low-power microprocessor supervisory circuit designed for monitoring power supplies in digital systems. It features ultra-low supply current and a guaranteed reset valid down to 0.9V.
✓ Total Stock: 3,990 pcs
$ Price Range: $0.75

SP809NEK-L-3-1/TR Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Bristol Electronics ✓
Non-Authorised Inventory information
2,080 pcs
On Request
2080 pcs On Request 1 On Request On Request On Request On Request On Request
Partservice ✓
Non-Authorised Inventory information
1,910 pcs
On Request
1910 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

SP809NEK-L-3-1/TR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Automotive Grade
Industrial Grade
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Medical Grade
Military Grade
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Tape & Reel
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SP809NEK-L-3-1/TR Description

Short technical summary and product information.

The SP809NEK-L-3-1/TR from Exar is a 3-pin microprocessor supervisory circuit designed to monitor power supply voltages in microprocessor and digital systems. It provides circuit reliability and low cost by eliminating external components. If the VCC supply voltage falls below a preset threshold, a reset signal is asserted for at least 140ms after VCC has risen above the reset threshold. This device is ideal for portable electronic devices due to its ultra-low supply current of 1µA (typical).

 

Key features include a guaranteed reset valid to VCC = 0.9V and internally fixed voltage thresholds available in several values, including 2.3V, 2.6V, 2.9V, 3.1V, 4.4V, and 4.6V, with a tight 1.5% voltage threshold tolerance. The SP809NEK-L-3-1/TR is supplied in a compact 3-pin SOT-23 package, suitable for space-constrained applications. Its low power consumption makes it an excellent choice for battery-powered equipment requiring reliable power monitoring.

SP809NEK-L-3-1/TR Quick Information

Product Type: Microprocessor Supervisor
Series: SP809
Canonical Name: Microprocessor Supervisor Circuit
Subcategory: Supervisors

SP809NEK-L-3-1/TR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

SP809NEK-L-3-1/TR Estimated Pricing

Qty Low High
1+ $0.75 $0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

SP809NEK-L-3-1/TR Features

  • Ultra low supply current of 1µA typical.
  • Guaranteed reset valid down to 0.9V.
  • 140ms power-on reset pulse width.
  • Internally fixed voltage thresholds.
  • Compact 3-pin SOT-23 package.

SP809NEK-L-3-1/TR Applications

  • Ideal for portable electronic devices.
  • Used in electrical power meters.
  • Suitable for digital still cameras.
  • Monitors power in µP systems.

SP809NEK-L-3-1/TR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the typical supply current for the SP809NEK-L-3-1/TR?

The typical supply current for the SP809NEK-L-3-1/TR is 1µA.

What is the reset pulse width for the SP809NEK-L-3-1/TR?

The power-on reset pulse width is a minimum of 140ms.

What are the available internally fixed voltage thresholds?

The internally fixed voltage thresholds are 2.3V, 2.6V, 2.9V, 3.1V, 4.4V, and 4.6V.

What is the voltage threshold tolerance?

The voltage threshold tolerance is 1.5%.

What is the minimum operating voltage for reset validity?

Reset is guaranteed valid down to a VCC of 0.9V.

What is the operating temperature range?

The operating temperature range is -40°C to 85°C.

What package is the SP809NEK-L-3-1/TR supplied in?

The SP809NEK-L-3-1/TR is supplied in a 3-pin SOT-23 package.

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