MCP45HV51-104E/ST, Digital Potentiometer 100kΩ 256-Position Linear Serial-I2C 14 Pin, TSSOP

  • RS Stock No. 165-4162
  • Mfr. Part No. MCP45HV51-104E/ST
  • Brand Microchip
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): TH
Product Details

MCP45HVx1 Digital Potentiometers

The MCP45HVx1 family of devices from Microchip are Digital Potentiometers with an SPI Interface and on board Volatile Memory. The device family has dual power rails, one analogue one digital. The Analogue power rail can handle up to +36 V and can be implemented as a dual rail (±18 V) relative to the digital logic ground.

The MCP45HVx1 has a Write Latch (WLAT) function that inhibits the volatile wiper register from being updated (latched) with received data until the WLAT pin is low. This allows the specification of a condition where the volatile wiper register is updated (such as zero crossing).


High-Voltage Analogue Support: +36 V terminal voltage range (DGND = V-), ±18 V terminal voltage range (DGND = V- +18 V)
Wide Operating Voltage: Analogue 10 V to 36 V, Digital 2.7 V to 5.5 V or 1.8 V to 5.5 V (DGND ≤ V- +0.9 V)
Single Resistor Network
Resistor Network Resolution: 7-bit: 127 resistors (128 Taps) or 8-bit: 255 resistors (256 Taps) – model dependant
High Terminal/Wiper Current (IW) Support: 25 mA for 5 kΩ, 12.5 mA for 10 kΩ and 6.5 mA for 50 kΩ and 100 kΩ
Zero-Scale to Full-Scale Wiper Operation
Low Wiper Resistance: 75 Ω (typical)
Low Temperature Coefficient: Absolute (Rheostat) 50 ppm, Ratiometric (Potentiometer) 15 ppm (typical)
SPI Serial Interface
Resistor Network Terminal Disconnect via Shutdown pin (SHDN) or Terminal Control (TCON) register
Write Latch (WLAT) Pin to Control Update of Volatile Wiper Register (such as Zero Crossing)
Power-on Reset/Brown-out Reset for Digital and Analogue Supply
Serial Interface Inactive Current (3 μA Typical)
500 kHz Typical Bandwidth (-3 dB) Operation (5.0 kΩ Device)

Digital Potentiometer - Microchip

Attribute Value
Control Interface Serial-I2C
Resistance Value 100kΩ
Number of Positions 256
Taper Type Linear
Memory Type Volatile
Number of Pots per Package 1
Mounting Type Surface Mount
Package Type TSSOP
Pin Count 14
Power Supply Type Single
Typical Single Supply Voltage 1.8 → 5.5 (Digital) V, 10 → 36 (Analogue) V
Dimensions 5.1 x 4.5 x 1.05mm
Height 1.05mm
Minimum Operating Temperature -40 °C
Maximum Operating Temperature +125 °C
Width 4.5mm
Length 5.1mm
Available to back order for despatch 10/03/2020
Price Each (In a Tube of 96)
£ 0.972
(exc. VAT)
£ 1.166
(inc. VAT)
Per unit
Per Tube*
96 - 96
192 +
*price indicative
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