# CDCS503PWR

**Texas Instruments** · Clock Buffers, Drivers, Distributors · TSSOP-8

CDCS503PWR from Texas Instruments, in a TSSOP-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 | IN | input | LVCMOS clock input with frequency range 8-32 MHz (FS=0) or 8-27 MHz (FS=1). |
| 2 | SSC_SEL 0 | input | Spread spectrum selection input with internal pull-up, bit 0 of spread amount (±0%, ±0.5%, ±1%, ±2%). |
| 3 | SSC_SEL 1 | input | Spread spectrum selection input with internal pull-up, bit 1 of spread amount (±0%, ±0.5%, ±1%, ±2%). |
| 4 | GND | power_in | Ground reference. |
| 5 | FS | input | Frequency multiplication selection input with internal pull-up; low (0) selects x1 mode, high (1) selects x4 mode. |
| 6 | OUT | output | LVCMOS clock output with frequency 8-32 MHz (x1 mode) or 32-108 MHz (x4 mode) depending on FS and input frequency. |
| 7 | OE | input | Output enable input with internal pull-up; low (0) sets output to high impedance, high (1) enables output. |
| 8 | VDD | power_in | 3.3V power supply with operating voltage range 3.0-3.6V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-8 |
| Category | Clock/Timing |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `CDCS503PWR`
- Footprint: `Package_SO:TSSOP-8_3x3mm_P0.65mm`
- 3D model: TSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `cdcs503pwr-etched.step` / `cdcs503pwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cdcs503pwr.step` / `cdcs503pwr.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/lit/ds/symlink/cdcs503.pdf) (12 pp, sha256 `a5121b5c953251c4`, retrieved 2026-10-03, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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/cdcs503pwr-datasheet.pdf)