# CSE7759B

**CHIPSEA** · Energy Metering · SOP-8

CSE7759B from CHIPSEA, in a SOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VDD | power_in | Chip power supply, recommended operating voltage 4.5-5.5 V. |
| 2 | V1P | input | Current differential signal positive input, maximum differential input signal ±43.75 mV; should be shorted to VSS when current signal is not used. |
| 3 | V1N | input | Current differential signal negative input, maximum differential input signal ±43.75 mV; should be shorted to VSS when current signal is not used. |
| 4 | V2P | input | Positive voltage signal input, maximum input signal ±700 mV; should be shorted to VSS when voltage signal is not used. |
| 5 | VSS | power_in | Chip ground. |
| 6 | TI | output | UART transmission port, serial data output at 4800 bps (±2%). |
| 7 | CF | output | Active high-frequency pulse output for active power metering, 50% duty cycle. |
| 8 | RI | input | UART reception port, reserved for future use. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | CHIPSEA |
| Package | SOP-8 |
| Category | Data Acquisition |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `CSE7759B`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `cse7759b-etched.step` / `cse7759b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cse7759b.step` / `cse7759b.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [CHIPSEA datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602907777916280832) (17 pp, sha256 `846fe22fe9357e8e`, retrieved 2026-09-22, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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/cse7759b-datasheet.pdf)