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MCP4551T-502E

Microchip Tech · Digital Potentiometers · MSOP-8

MCP4551T-502E from Microchip Tech, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	HVC/A0	input	High-voltage-tolerant Schmitt-trigger input serving as I2C Address 0 (latched at POR/BOR) and High Voltage command pin when at VIHH.
2	SCL	input	I2C serial clock input from the host; the device is a slave and accepts only external clock signals.
3	SDA	bidirectional	I2C serial data input/output with open-drain N-channel driver.
4	VSS	power_in	Device ground reference.
5	P0A	passive	Potentiometer 0 terminal A, the full-scale wiper connection, with voltage required to be between VSS and VDD.
6	P0W	passive	Potentiometer 0 wiper terminal, with voltage required to be between VSS and VDD.
7	P0B	passive	Potentiometer 0 terminal B, the zero-scale wiper connection (wiper value 0x00), with voltage required to be between VSS and VDD.
8	VDD	power_in	Positive power supply input relative to VSS; 2.7V to 5.5V device characteristics specified, 1.8V to 5.5V operation.

Key specifications

Parameter	Value
Manufacturer	Microchip Tech
Package	MSOP-8
Category	ADC/DAC/Data Conversion
Pins	8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Supply Voltage	VDD	2.7		5.5	V		4
Supply Voltage (serial interface only)	VDD	1.8		2.7	V	Serial Interface only.	4
VDD Start Voltage to ensure Wiper Reset	VBOR			1.65	V	RAM retention voltage (VRAM) < VBOR	4
Delay after device exits reset state	TBORD		10	20	µs	VDD > VBOR	4
Supply Current, serial interface active 3.4 MHz	IDD			600	µA	Serial Interface Active, HVC/A0 = VIH (or VIL), write all 0's to Volatile Wiper 0, VDD = 5.5V, FSCL = 3.4 MHz	4
Supply Current, serial interface active 100 kHz	IDD			250	µA	Serial Interface Active, HVC/A0 = VIH (or VIL), write all 0's to Volatile Wiper 0, VDD = 5.5V, FSCL = 100 kHz	4
Supply Current, serial interface inactive	IDD		2.5	5	µA	Stop condition, SCL = SDA = VIH, Wiper = 0, VDD = 5.5V, HVC/A0 = VIH	4
Resistance (-502 devices)	RAB	4	5	6	kΩ	-502 devices, ±20%	5
Resistance tolerance	RAB	-20		20	%	-502 devices	5
Wiper Resistance	RW		75	160	Ω	VDD = 5.5 V, IW = 2.0 mA, code = 00h	5
Wiper Resistance	RW		75	300	Ω	VDD = 2.7 V, IW = 2.0 mA, code = 00h	5
Nominal Resistance Tempco	ΔRAB/ΔT		50		ppm/°C	TA = -20°C to +70°C	5
Nominal Resistance Tempco	ΔRAB/ΔT		100		ppm/°C	TA = -40°C to +85°C	5
Nominal Resistance Tempco	ΔRAB/ΔT		150		ppm/°C	TA = -40°C to +125°C	5
Ratiometric Tempco	ΔVWB/ΔT		15		ppm/°C	Code = Midscale (80h or 40h)	5
Resistor Terminal Input Voltage Range	VA,VW,VB	0		5.5	V	Vss to VDD; Note 5, Note 6	5
Max current through terminal A	IT			2.5	mA	Terminal A IAW, W = Full-Scale (FS)	6
Max current through terminal B	IT			2.5	mA	Terminal B IBW, W = Zero Scale (ZS)	6
Max current through terminal W	IT			2.5	mA	Terminal W IAW or IBW, W = FS or ZS	6
Max current between terminals A and B	IAB			1.38	mA	VB = 0V, VA = 5.5V, RAB(MIN) = 4000 Ω	6
Leakage current into A, W or B	IWL		100		nA	MCP4XX1 PxA = PxW = PxB = VSS	6
Full-Scale Error	VWFSE	-6	-0.1		LSb	5 k 8-bit, 3.0V ≤ VDD ≤ 5.5V	7
Zero-Scale Error	VWZSE		0.1	6	LSb	5 k 8-bit, 3.0V ≤ VDD ≤ 5.5V	7
Potentiometer Integral Non-linearity	INL	-1	0.5	1	LSb	8-bit 3.0V ≤ VDD ≤ 5.5V, MCP4XX1 only (Note 2); typ ±0.5	7
Potentiometer Differential Non-linearity	DNL	-0.5	0.25	0.5	LSb	8-bit 3.0V ≤ VDD ≤ 5.5V, MCP4XX1 only (Note 2); typ ±0.25	7
Bandwidth -3 dB	BW		2		MHz	5 k 8-bit Code = 80h, load = 30 pF	8
Rheostat Integral Non-linearity	R-INL	-1.5	0.5	1.5	LSb	5 k 8-bit, 5.5V, IW = 900 µA; typ ±0.5	9
Rheostat Integral Non-linearity	R-INL	-8.25	4.5	8.25	LSb	5 k 8-bit, 3.0V, IW = 480 µA (Note 7)	9
Rheostat Differential Non-linearity	R-DNL	-0.5	0.25	0.5	LSb	5 k 8-bit, 5.5V, IW = 900 µA; typ ±0.25	10
Rheostat Differential Non-linearity	R-DNL	-1	0.5	1	LSb	5 k 8-bit, 3.0V, IW = 480 µA (Note 7)	10
Capacitance (PA)	CAW		75		pF	f =1 MHz, Code = Full-Scale	10
Capacitance (PW)	CW		120		pF	f =1 MHz, Code = Full-Scale	10
Capacitance (PB)	CBW		75		pF	f =1 MHz, Code = Full-Scale	10
Schmitt Trigger High Input Threshold (all inputs except SDA/SCL)	VIH	0.45			V	min 0.45 VDD, 2.7V ≤ VDD ≤ 5.5V	11
Schmitt Trigger High Input Threshold (SDA/SCL)	VIH	0.7		12.5	V	min 0.7 VDD, max VMAX; 100 kHz to 3.4 MHz	11
Schmitt Trigger Low Input Threshold (all inputs except SDA/SCL)	VIL			0.2	V	max 0.2VDD, all inputs except SDA and SCL	11
Schmitt Trigger Low Input Threshold (SDA/SCL)	VIL	-0.5		0.3	V	max 0.3VDD, SDA and SCL	11
High Voltage Limit	VMAX			12.5	V	Pin can tolerate VMAX or less.	11
Output Low Voltage (SDA)	VOL	0		0.4	V	VDD ≥ 2.0V, IOL = 3 mA	12
Weak Pull-up / Pull-down Current	IPU			1.75	mA	Internal VDD pull-up, VIHH pull-down, VDD = 5.5V, VIHH = 12.5V	12
HVC pin pull current	IPU		170		µA	HVC pin, VDD = 5.5V, VHVC = 3V	12
HVC Pull-up/Pull-down Resistance	RHVC		16		kΩ	VDD = 5.5V, VHVC = 3V	12
Input Leakage Current	IIL	-1		1	µA	VIN = VDD and VIN = VSS	12
Pin Capacitance	CIN, COUT		10		pF	fC = 3.4 MHz	12
SCL clock frequency, Standard Mode	FSCL	0		100	kHz	Cb = 400 pF, 1.8V - 5.5V	13
SCL clock frequency, Fast Mode	FSCL	0		400	kHz	Cb = 400 pF, 2.7V - 5.5V	13
SCL clock frequency, High-Speed 1.7	FSCL	0		1.7	MHz	Cb = 400 pF, 4.5V - 5.5V	13
SCL clock frequency, High-Speed 3.4	FSCL	0		3.4	MHz	Cb = 100 pF, 4.5V - 5.5V	13
Voltage on VDD with respect to VSS	VDD	-0.6		7	V		3
Voltage on HVC/A0, A1, A2, SCL, SDA with respect to VSS		-0.6		12.5	V		3
Voltage on PxA, PxW, PxB with respect to VSS		-0.3			V	-0.3V to VDD + 0.3V	3
Input clamp current	IIK	-20		20	mA	VI < 0, VI > VDD, VI > VPP on HV pins	3
Output clamp current	IOK	-20		20	mA	VO < 0 or VO > VDD	3
Maximum current into PXA, PXW & PXB pins		-2.5		2.5	mA		3
Maximum current into VDD pin				100	mA		3
Maximum current out of VSS pin				100	mA		3
Storage temperature		-65		150	°C		3
Ambient temperature with power applied		-40		125	°C		3
Maximum Junction Temperature	TJ			150	°C		3
Operating Temperature Range	TA	-40		125	°C		16
Thermal Resistance, 8L-MSOP	θJA		211		°C/W		16

CAD (KiCad official)

Symbol: MCP4551T-502E
Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
3D model: MSOP-8 (KiCad packages3D, STEP)
3D model files: mcp4551t-502e-etched.step / mcp4551t-502e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcp4551t-502e.step / mcp4551t-502e.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Microchip Tech datasheet (102 pp, sha256 ee77464c39584a73, retrieved 2026-10-22, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF