# ECS-TXO-2520MV-250-AN-TR

**ECS** · Temperature Compensated Crystal Oscillators (TCXOs) · SMD2520-4P

ECS-TXO-2520MV-250-AN-TR from ECS, in a SMD2520-4P. 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 | Tri-State | input | Output enable: when high or not connected the output is active, and when low the output is disabled and goes to High-Z. |
| 2 | Ground | power_in | Ground connection for the TCXO. |
| 3 | Output | output | CMOS clock output, with VOL at most 10% Vdd and VOH at least 90% Vdd, 45/55 % symmetry at 50% VDD, and 15 pF output load. |
| 4 | VDD | power_in | Supply input, specified from +1.7 V to +3.6 V (MultiVolt, 1.8 V, 2.5 V or 3.3 V nominal). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ECS |
| Package | SMD2520-4P |
| Category | Crystal Oscillator/Oscillator/Resonator |
| Pins | 4 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Frequency Range |  | 10 |  | 60 | MHz |  | 1 |
| Operating Temperature |  | -40 |  | 85 | °C | N Option | 1 |
| Storage Temperature |  | -40 |  | 90 | °C |  | 1 |
| Input Voltage | VDD | 1.7 |  | 3.6 | VDC |  | 1 |
| Frequency Stability vs. Temp |  | -2.5 |  | 2.5 | PPM | AN -40 ~ +85°C | 1 |
| Frequency Stability vs. Supply Change |  | -0.3 |  | 0.3 | PPM | Supply change ±5% | 1 |
| Frequency Stability vs. Load Change |  | -0.3 |  | 0.3 | PPM | Load change ±5% | 1 |
| Frequency Stability vs. Aging/Year |  | -1 |  | 1 | PPM | Per year | 1 |
| Frequency Tolerance |  | -1.5 |  | 1.5 | PPM | @ +25°C ±2°C | 1 |
| Current Consumption |  |  |  | 6 | mA |  | 1 |
| Logic 0 Level | VOL |  |  | 10 | % Vdd |  | 1 |
| Logic 1 Level | VOH | 90 |  |  | % Vdd |  | 1 |
| Output Symmetry |  | 45 |  | 55 | % | @50% VDD Level | 1 |
| Rise and Fall Time |  |  |  | 5 | ns | 10% VDD to 90% Level | 1 |
| Current Consumption at 20.1~30 MHz, +1.8V |  |  |  | 3.8 | mA | Frequency 20.1~30 MHz, +1.8V | 1 |
| Current Consumption at 20.1~30 MHz, +2.5V |  |  |  | 4.2 | mA | Frequency 20.1~30 MHz, +2.5V | 1 |
| Current Consumption at 20.1~30 MHz, +2.8V |  |  |  | 4.7 | mA | Frequency 20.1~30 MHz, +2.8V | 1 |
| Current Consumption at 20.1~30 MHz, +3.3V |  |  |  | 5.5 | mA | Frequency 20.1~30 MHz, +3.3V | 1 |
| Nominal Frequency |  |  | 25 |  | MHz | MPN code 250 = 25.000 MHz | 1 |

## 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 |  | gold | • Lead Finish Au • MultiVolt™ Compatible with | 1 |

## CAD (KiCad official)

- Symbol: `ECS-TXO-2520MV-250-AN-TR`
- Footprint: `Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm`
- 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files: `ecs-txo-2520mv-250-an-tr-etched.step` / `ecs-txo-2520mv-250-an-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ecs-txo-2520mv-250-an-tr.step` / `ecs-txo-2520mv-250-an-tr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ECS datasheet](docs/ecs-txo-2520mv-250-an-tr-datasheet.pdf) (2 pp, sha256 `70bacff9b2792bba`, retrieved 2026-10-30, 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/ecs-txo-2520mv-250-an-tr-datasheet.pdf)