# TL7700CPS

**Texas Instruments** · Monitors & Reset Circuits · SO-8-208mil

TL7700CPS from Texas Instruments, in a SO-8-208mil. 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 | CT | bidirectional | Timing capacitor connection that sets the RESET output pulse duration (tpo = Ct × 10^5 s) through an internal 15-µA constant-current source, and no external voltage may be applied to it, so it must be driven only by an open-collector transistor, FET, or 3-state buffer. |
| 2 | SENSE | input | Voltage sense input with a 500 mV typical threshold (±1.0% at 25°C) that is set above 0.5 V with two external resistors, which also set the hysteresis, and it has a -0.3 V to 41 V input range. |
| 3 | NC | unconnected | No internal connection. |
| 4 | GND | power_in | Ground reference for the device, which should be kept as low impedance as possible to reduce circuit noise. |
| 5 | VCC | power_in | Power supply input for the 1.8 V to 40 V operating range, with a 41 V absolute maximum. |
| 6 | NC | unconnected | No internal connection. |
| 7 | NC | unconnected | No internal connection. |
| 8 | RESET | output | Active-low reset output implemented as an npn open-collector transistor that requires a pullup resistor, with a recommended low-level output current of 3 mA maximum (5 mA absolute maximum) and an off-state output voltage of 41 V maximum. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SO-8-208mil |
| Category | Power Supply Chip |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `TL7700CPS`
- Footprint: `Package_SO:SO-8_3.9x4.9mm_P1.27mm`
- 3D model: SO-8-208mil (KiCad packages3D, STEP)
- 3D model files: `tl7700cps-etched.step` / `tl7700cps-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tl7700cps.step` / `tl7700cps.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tl7700) (31 pp, sha256 `1547d1ba57f7e311`, retrieved 2026-10-08, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/tl7700cps-datasheet.pdf)