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README

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MCP4261-104E

Microchip Tech · Digital Potentiometers · PDIP-14

MCP4261-104E from Microchip Tech, in a PDIP-14. 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 CS input SPI chip select input, high-voltage tolerant with Schmitt trigger; forcing it to VIL enables serial commands and VIHH enables high-voltage serial commands.
2 SCK input SPI clock input, high-voltage tolerant with Schmitt trigger and smart weak pull-up.
3 SDI input SPI serial data input, connected to the host controller's SDO pin; high-voltage tolerant with Schmitt trigger.
4 VSS power_in Ground reference for the device.
5 P1B passive Potentiometer 1 terminal B, the fixed zero-scale (wiper 0x00) connection; non-polarized and must be between VSS and VDD.
6 P1W passive Potentiometer 1 wiper terminal, the adjustable terminal; non-polarized and must be between VSS and VDD.
7 P1A passive Potentiometer 1 terminal A, the fixed full-scale connection; non-polarized and must be between VSS and VDD.
8 P0A passive Potentiometer 0 terminal A, the fixed full-scale connection; non-polarized and must be between VSS and VDD.
9 P0W passive Potentiometer 0 wiper terminal, the adjustable terminal; non-polarized and must be between VSS and VDD.
10 P0B passive Potentiometer 0 terminal B, the fixed zero-scale (wiper 0x00) connection; non-polarized and must be between VSS and VDD.
11 WP input Hardware EEPROM write protect input that forces the non-volatile memory to be write protected.
12 SHDN input Hardware shutdown input that forces the resistor network terminals into the shutdown state; high-voltage tolerant with Schmitt trigger.
13 SDO output SPI serial data output, connected to the host controller's SDI pin, used to read registers or monitor the command error bit.
14 VDD power_in Positive power supply input relative to VSS; electrical performance may not meet specifications below 2.7V.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package PDIP-14
Category ADC/DAC/Data Conversion
Pins 14

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Nominal Resistance RAB (-104) RAB 80 100 120 kΩ -104 devices (Note 1), ±20% 5
Resistance tolerance RAB -20 20 % -104 devices 5
Supply Voltage VDD 2.7 5.5 V 4
Supply Voltage (serial interface only) VDD 1.8 2.7 V Serial Interface only 4
Operating Temperature Range TA -40 125 °C 14
Digital pin voltage range VHV 0 12.5 V VDD ≥ 4.5V; VSS to 12.5V 4
BOR start voltage VBOR 1.65 V RAM retention voltage (VRAM) < VBOR 4
Delay after reset exit TBORD 10 20 µs VDD > VBOR 4
Supply Current, serial active IDD 450 µA Serial Interface Active, VDD = 5.5V, CS = VIL, SCK @ 5 MHz, write all 0's to volatile Wiper 0 4
Supply Current, EE write IDD 1 mA EE Write Current, VDD = 5.5V, CS = VIL, SCK @ 5 MHz, write all 0's to non-volatile Wiper 0 (address 2h) 4
Supply Current, serial inactive IDD 2.5 5 µA Serial Interface Inactive, CS = VIH, VDD = 5.5V 4
Supply Current, high-voltage decrement IDD 0.55 1 mA Serial Interface Active, VDD = 5.5V, CS = VIHH, SCK @ 5 MHz, decrement non-volatile Wiper 0 (address 2h) 4
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 Match /RAB0 - RAB1/ / RAB 0.2 1.25 % MCP42X1 devices only 5
Resolution N 257 Taps 8-bit No Missing Codes 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
Maximum current through A, W or B IW 2.5 mA Note 6, worst case current through wiper when Full-Scale or Zero Scale 5
Leakage current into A, W or B IWL 100 nA MCP4XX1 PxA = PxW = PxB = VSS 5
Full-Scale Error VWFSE -0.5 -0.1 LSb 100 kΩ 8-bit 3.0V ≤ VDD ≤ 5.5V 6
Zero-Scale Error VWZSE 0.1 0.5 LSb 100 kΩ 8-bit 3.0V ≤ VDD ≤ 5.5V 6
Potentiometer INL INL -1 0.5 1 LSb 8-bit 3.0V ≤ VDD ≤ 5.5V, MCP4XX1 devices only (Note 2); typ ±0.5 6
Potentiometer DNL DNL -0.5 0.25 0.5 LSb 8-bit 3.0V ≤ VDD ≤ 5.5V, MCP4XX1 devices only (Note 2); typ ±0.25 6
Bandwidth -3 dB BW 100 kHz 100 kΩ 8-bit Code = 80h, load = 30 pF 6
Capacitance (PA) CAW 75 pF f =1 MHz, Code = Full-Scale 8
Capacitance (PW) CW 120 pF f =1 MHz, Code = Full-Scale 8
Capacitance (PB) CBW 75 pF f =1 MHz, Code = Full-Scale 8
Schmitt Trigger High Input Threshold VIH 0.45 V 2.7V ≤ VDD ≤ 5.5V; min is 0.45 VDD 9
Schmitt Trigger High Input Threshold VIH 0.5 V 1.8V ≤ VDD ≤ 2.7V; min is 0.5 VDD 9
Schmitt Trigger Low Input Threshold VIL 0.2 V max is 0.2VDD 9
Hysteresis of Schmitt Trigger Inputs VHYS 0.1 V typ is 0.1VDD 9
High Voltage Input Entry Voltage VIHH 8.5 12.5 V Threshold for WiperLock Technology 9
High Voltage Limit VMAX 12.5 V Pin can tolerate VMAX or less 9
Output Low Voltage (SDO) VOL 0 0.3 V IOL = 5 mA, VDD = 5.5V; max is 0.3VDD 9
Output High Voltage (SDO) VOH 0.7 V IOH = -2.5 mA, VDD = 5.5V; min is 0.7VDD 9
Weak Pull-up current IPU 1.75 mA Internal VDD pull-up, VIHH pull-down, VDD = 5.5V, VCS = 12.5V 9
CS pull-up current IPU 170 µA CS pin, VDD = 5.5V, VCS = 3V 9
CS Pull-up/Pull-down Resistance RCS 16 kΩ VDD = 5.5V, VCS = 3V 9
Input Leakage Current IIL -1 1 µA VIN = VDD and VIN = VSS 9
Pin Capacitance CIN, COUT 10 pF fC = 20 MHz 9
EEPROM Write Cycle Time tWC 5 10 ms 10
SCK Input Frequency FSCK 10 MHz VDD = 2.7V to 5.5V 11
SCK Input Frequency FSCK 1 MHz VDD = 1.8V to 2.7V 11
SCK input high time TscH 45 ns VDD = 2.7V to 5.5V 11
SCK input low time TscL 45 ns VDD = 2.7V to 5.5V 11
SDO data output valid after SCK↓ TscL2DOV 70 ns VDD = 2.7V to 5.5V 11
Thermal Resistance, 14L-PDIP θJA 70 °C/W 14
Voltage on VDD wrt VSS VDD -0.6 7 V 3
Voltage on CS, SCK, SDI, WP, SHDN wrt VSS -0.6 12.5 V 3
Voltage on PxA, PxW, PxB, SDO wrt VSS -0.3 V -0.3V to VDD + 0.3V 3
Maximum current into PXA, PXW & PXB pins -2.5 2.5 mA 3
Storage temperature -65 150 °C 3
Ambient temperature with power applied -40 125 °C 3
Maximum Junction Temperature TJ 150 °C 3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin P = Plastic Dual In-line (PDIP) (300 mil), 8/14-lead SN = Plastic Small Outline (SOIC), (150 mil), 8-lead 85

CAD (KiCad official)

  • Symbol: MCP4261-104E
  • Footprint: Package_DIP:DIP-14_W7.62mm
  • 3D model: PDIP-14 (KiCad packages3D, STEP)
  • 3D model files: mcp4261-104e-etched.step / mcp4261-104e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcp4261-104e.step / mcp4261-104e.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (88 pp, sha256 485870dfa4cb7357, retrieved 2026-10-30, 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