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CAP1293-1-SN-TR

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Microchip Tech Touch Sensors, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CAP1293-1-SN-TR

Microchip Tech · Touch Sensors · SOIC-8

CAP1293-1-SN-TR from Microchip Tech, in a SOIC-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 ALERT# output Active-low open-drain alert/interrupt output for SMBus alert, 5V tolerant, requires pull-up resistor; connect to ground if unused.
2 SMDATA bidirectional Bi-directional open-drain SMBus or I2C data pin, 5V tolerant, requires pull-up resistor.
3 SMCLK input SMBus or I2C clock input, 5V tolerant, requires pull-up resistor.
4 VDD power_in Positive power supply, 3.0V to 5.5V operating range (absolute maximum -0.3 to 6.5 V).
5 GND power_in Ground.
6 CS3 bidirectional Capacitive touch sensor input 3 (analog I/O), voltage limited to -0.3 to 4.0 V; connect to ground if unused.
7 CS2/SG bidirectional Capacitive touch sensor input 2 or signal guard output (analog I/O); connect to ground if unused as CS2, leave open if unused as SG.
8 CS1 bidirectional Capacitive touch sensor input 1 (analog I/O), voltage limited to -0.3 to 4.0 V; connect to ground if unused.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOIC-8
Category Sensors
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 3 5.5 V VDD = 3V to 5.5V, TA = 0°C to 85°C 7
Supply Current Standby default ISTBY_DEF 120 170 µA Standby state active, 1 sensor input monitored, default conditions (8 avg, 70ms cycle time) 7
Supply Current Standby low power ISTBY_LP 50 µA Standby state active, 1 sensor input monitored, 1 avg, 140ms cycle time 7
Supply Current Deep Sleep IDSLEEP_3V 5 µA Deep Sleep state active, no communications, TA < 40°C, 3.135 < VDD < 3.465V; max printed TBD 7
Supply Current Active IDD 500 750 µA Capacitive Sensing Active, signal guard disabled 7
Maximum Base Capacitance CBASE 50 pF Pad untouched 7
Recommended Cap Shift CTOUCH 0.1 2 pF Pad touched - Not tested 7
Minimum Detectable Capacitive Shift CTOUCH 20 fF Pad touched - default conditions 7
Power Supply Rejection PSR 3 10 counts / V Untouched Current Counts, Base Capacitance 5pF - 50pF, Negative Delta Counts disabled, Maximum sensitivity, All other parameters default 7
Power-On Reset Voltage VPOR 1 1.3 V Pin States Defined 7
Power-On Reset Release Voltage VPORR 2.85 V Rising VDD, Ensured by design 7
Brown-Out Reset VBOR 2.8 V Falling VDD 7
VDD Rise Rate SVDD 0.05 V/ms 0 to 3V in 60ms 7
Power-Up Timer Period tPWRT 10 ms 7
Brown-Out Reset Voltage Delay tBORDC 1 µs VDD = VBOR - 1 7
Voltage on VDD pin VDD -0.3 6.5 V 6
Voltage on CS pins to GND -0.3 4 V 6
Voltage on 5V tolerant pins V5VT_PIN -0.3 5.5 V 6
Voltage on 5V tolerant pins difference /V5VT_PIN - VDD/ 0 3.6 V see Note 2-2 6
Input current to any pin except VDD 10 mA 6
Package Power Dissipation 0.5 W up to TA = 85°C for 8-pin TDFN 6
Operating Ambient Temperature Range -40 125 °C 6
Storage Temperature Range -55 150 °C 6
ESD Rating, All Pins, HBM 8000 V 6
Junction to Ambient θJA 89 °C/W 8-pin TDFN package 6

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 PIN 1 CAP1293-1-SN-TR 55

CAD (KiCad official)

  • Symbol: CAP1293-1-SN-TR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: cap1293-1-sn-tr-etched.step / cap1293-1-sn-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cap1293-1-sn-tr.step / cap1293-1-sn-tr.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (63 pp, sha256 dd5c0db128f93ffb, retrieved 2026-10-23, tier: lcsc)
  • 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