MCP6566T-E/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock

Name: MCP6566T-E/OT
Brand: Microchip
SKU: MCP6566T-E/OT
Availability: InStock

Microchip MCP6566T-E/OT is a single low-power open-drain comparator operating from 1.8V to 5.5V supply in a 5-pin SOT-23 package with 5 nA maximum input bias current. Features push-pull compatible open-drain output for wired-OR bus configurations. Available from stock with worldwide shipping.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

MCP6566T-E/OTSOT23 (5-Pin)

Quick Facts

Manufacturer: Microchip
Package: SOT23 (5-Pin)
Pin Count: 5
Lifecycle: ACTIVE
Datasheet: MCP6566T-E/OT Datasheet PDF
Category: Integrated Circuit
Price: From $0.1875(MOQ 1)
Temp Range: -40.0°C to 125.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of MCP6566T-E/OT?

1.8V to 5.5V single-supply operation enabling direct use in low-voltage 1.8V and 3.3V logic systems
Open-drain output supporting wired-OR configurations for shared interrupt lines with external pull-up flexibility
5 nA maximum input bias current in tiny 5-pin SOT-23 package for minimal loading on high-impedance signal sources

What is MCP6566T-E/OT used for?

The MCP6566T-E/OT is used in threshold detection circuits for battery voltage monitoring, over-temperature protection, and GPIO interrupt generation in microcontroller-based systems powered from 1.8V to 5.5V. Its open-drain output allows multiple comparators to share a single pull-up resistor on a wired-OR interrupt bus without level-translation logic. The 5-pin SOT-23 package is ideal for space-constrained portable and IoT designs where a dedicated comparator conserves MCU ADC resources.

What are the specifications of MCP6566T-E/OT?

Pbfree Code	Yes
Manufacturer Package Code	SOT-23-5
Factory Lead Time	2Weeks
YTEOL	8
Amplifier Type	COMPARATOR
Average Bias Current-Max (IIB)	0.005 µA
Bias Current-Max (IIB) @25C	0.005 µA
Input Offset Voltage-Max	10000 µV
JESD-30 Code	R-PDSO-G5
JESD-609 Code	e3
Number of Functions	1
Output Type	OPEN-DRAIN
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	TSOP5/6,.11,37
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Packing Method	TR
Peak Reflow Temperature (Cel)	260
Qualification Status	Not Qualified
Response Time-Nom	56ns
Supply Current-Max	0.13mA
Supply Voltage Limit-Max	6.5V
Supply Voltage-Nom (Vsup)	1.8V
Surface Mount	YES
Technology	CMOS
Temperature Grade	AUTOMOTIVE
Terminal Finish	Matte Tin (Sn)
Terminal Form	GULL WING
Terminal Pitch	0.95mm
Terminal Position	DUAL
Time@Peak Reflow Temperature-Max (s)	40
Package	SOT23 (5-Pin)

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8542.39.00.60
Country of Origin	Malaysia, Thailand

Where can I find the MCP6566T-E/OT datasheet?

MCP6566T-E/OT Datasheet Download

Official datasheet from Microchip

What are equivalent replacements for MCP6566T-E/OT?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What supply voltage range does MCP6566T-E/OT support and how does this help in mixed-voltage system designs?

The MCP6566T-E/OT operates from 1.8V to 5.5V single supply, allowing it to interface directly with 1.8V MCUs on the input side and drive a 3.3V or 5V open-drain pull-up without level translation. This voltage flexibility is valuable in mixed-supply IoT boards where different subsystems operate at 1.8V and 3.3V simultaneously.

For a battery over-discharge protection circuit, how quickly can MCP6566T-E/OT respond to a threshold crossing?

The MCP6566T-E/OT provides a propagation delay of approximately 4 µs at 1.8V supply, fast enough for battery voltage monitoring circuits that need to flag an under-voltage event and trigger a load disconnect before the cell drops below its 2.5V minimum cutoff. The 5 nA input bias current ensures the voltage divider resistors can be in the megaohm range without offset error.

When would MCP6566T-E/OT be selected over an op-amp configured as a comparator in a 3.3V embedded design?

MCP6566T-E/OT is preferred over an op-amp when a rail-to-rail open-drain output with defined propagation delay is required, since general-purpose op-amps lack output stage optimization for digital logic levels. The dedicated comparator architecture ensures clean transitions on the open-drain output at 3.3V with a 10 kΩ pull-up, avoiding the linear region oscillation issues common with op-amp comparator circuits.

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AvailabilityIn Stock

Reference Price (USD)

From $0.1875

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
1+	$0.5500	$0.55
25+	$0.4600	$11.50
100+	$0.4200	$42.00
500+	$0.1913	$95.65
1000+	$0.1894	$189.40
3000+	$0.1875	$562.50

pcs

Unit price: $0.5500 · Total: $0.55

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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MCP6566T-E/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock

What are the key features of MCP6566T-E/OT?

What is MCP6566T-E/OT used for?

What are the specifications of MCP6566T-E/OT?

Compliance & Regulatory

Where can I find the MCP6566T-E/OT datasheet?

What are equivalent replacements for MCP6566T-E/OT?

Frequently Asked Questions

What supply voltage range does MCP6566T-E/OT support and how does this help in mixed-voltage system designs?

For a battery over-discharge protection circuit, how quickly can MCP6566T-E/OT respond to a threshold crossing?

When would MCP6566T-E/OT be selected over an op-amp configured as a comparator in a 3.3V embedded design?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

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About Microchip

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