# CAP1296-1-SL

**Microchip Tech** · Touch Sensors · SOIC-14

CAP1296-1-SL from Microchip Tech, in a SOIC-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 | N/C | unconnected | No connect pin on the 14-pin SOIC package. |
| 2 | CS1 | bidirectional | Capacitive touch sensor input 1 (analog I/O); connect to ground if unused. |
| 3 | ALERT# | output | Active-low open-drain alert/interrupt output for SMBus alert, requires a pull-up resistor, 5V tolerant; connect to ground if unused. |
| 4 | SMDATA | bidirectional | Bi-directional open-drain SMBus or I2C data line, requires a pull-up resistor, 5V tolerant. |
| 5 | SMCLK | input | SMBus or I2C clock input, requires a pull-up resistor, 5V tolerant. |
| 6 | N/C | unconnected | No connect pin on the 14-pin SOIC package. |
| 7 | VDD | power_in | Positive power supply, 3.0V to 5.5V operating range. |
| 8 | GND | power_in | Ground. |
| 9 | CS6 | bidirectional | Capacitive touch sensor input 6 (analog I/O); connect to ground if unused. |
| 10 | CS5 | bidirectional | Capacitive touch sensor input 5 (analog I/O); connect to ground if unused. |
| 11 | CS4 | bidirectional | Capacitive touch sensor input 4 (analog I/O); connect to ground if unused. |
| 12 | CS3/SG | bidirectional | Capacitive touch sensor input 3 or signal guard output (analog I/O); connect to ground if unused as CS3, leave open if unused as SG. |
| 13 | CS2 | bidirectional | Capacitive touch sensor input 2 (analog I/O); connect to ground if unused. |
| 14 | N/C | unconnected | No connect pin on the 14-pin SOIC package. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-14 |
| Category | Sensors |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VDD | 3 |  | 5.5 | V | VDD = 3V to 5.5V, TA = 0°C to 85°C | 8 |
| Standby Supply Current, default | ISTBY_DEF |  | 120 | 170 | µA | Standby state active, 1 sensor input monitored, default conditions (8 avg, 70ms cycle time) | 8 |
| Standby Supply Current, low power | ISTBY_LP |  | 50 |  | µA | Standby state active, 1 sensor input monitored, 1 avg, 140ms cycle time | 8 |
| Deep Sleep Supply Current | IDSLEEP_3V |  | 5 |  | µA | Deep Sleep state active, no communications, TA < 40°C, 3.135 < VDD < 3.465V | 8 |
| Supply Current, sensing active | IDD |  | 500 | 750 | µA | Capacitive Sensing Active, signal guard disabled | 8 |
| Maximum Base Capacitance | CBASE |  |  | 50 | pF | Pad untouched | 8 |
| Minimum Detectable Capacitive Shift | CTOUCH |  | 20 |  | fF | Pad touched - default conditions | 8 |
| Recommended Cap Shift | CTOUCH | 0.1 |  | 2 | pF | Pad touched - Not tested | 8 |
| 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 | 8 |
| Power-On Reset Voltage | VPOR |  | 1 | 1.3 | V | Pin States Defined | 8 |
| Power-On Reset Release Voltage | VPORR |  | 2.85 |  | V | Rising VDD, Ensured by design | 8 |
| Brown-Out Reset | VBOR |  | 2.8 |  | V | Falling VDD | 8 |
| VDD Rise Rate | SVDD | 0.05 |  |  | V/ms | 0 to 3V in 60ms | 8 |
| Power-Up Timer Period | tPWRT |  | 10 |  | ms |  | 8 |
| Brown-Out Reset Voltage Delay | tBORDC |  | 1 |  | µs | VDD = VBOR - 1 | 8 |
| Voltage on VDD pin | VDD | -0.3 |  | 6.5 | V |  | 7 |
| Voltage on CS pins to GND |  | -0.3 |  | 4 | V |  | 7 |
| Voltage on 5V tolerant pins | V5VT_PIN | -0.3 |  | 5.5 | V |  | 7 |
| Voltage on 5V tolerant pins difference | /V5VT_PIN - VDD/ | 0 |  | 3.6 | V | Note 2-2 | 7 |
| Input current to any pin except VDD |  |  |  | 10 | mA |  | 7 |
| Package Power Dissipation |  |  |  | 0.5 | W | up to TA = 85°C for 10-pin DFN (Note 2-3) | 7 |
| Operating Ambient Temperature Range |  | -40 |  | 125 | °C |  | 7 |
| Storage Temperature Range |  | -55 |  | 150 | °C |  | 7 |
| ESD Rating, All Pins, HBM |  |  |  | 8000 | V |  | 7 |
| Junction to Ambient | θJA |  | 78 |  | °C/W | Note 2-4; stated with Absolute Maximum Ratings (10-pin DFN thermal via design) | 7 |

## 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 |  | nickel | PIN 1 (Ni/Pd PP-LF) Line 1, Device Code, Week 2x 0.6 | 61 |

## CAD (KiCad official)

- Symbol: `CAP1296-1-SL`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `cap1296-1-sl-etched.step` / `cap1296-1-sl-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cap1296-1-sl.step` / `cap1296-1-sl.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/00001569B.pdf) (68 pp, sha256 `71c43dec9831b0e8`, 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](docs/cap1296-1-sl-datasheet.pdf)