# SG-8018CE 24.500000MHz TJHPA

**Seiko Epson** · Programmable Oscillators · SMD3225-4P

SG-8018CE 24.500000MHz TJHPA from Seiko Epson, in a SMD3225-4P. 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 | OE | input | Output enable input: High outputs the specified frequency on OUT, and Low forces OUT low (weak pull-down) while disabling only the output driver, with VIH min 70% VCC and VIL max 30% VCC. |
| 2 | GND | power_in | Ground supply pin for the oscillator. |
| 3 | OUT | output | CMOS clock output at the programmed frequency (0.67 MHz to 170 MHz), with a 15 pF max load and VOH min 90% VCC and VOL max 10% VCC. |
| 4 | VCC | power_in | Power supply pin, rated 1.62 V to 3.63 V for this part, with a 0.1 µF capacitor to be placed between VCC and GND as close to the device as possible. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Seiko Epson |
| Package | SMD3225-4P |
| Category | Crystals, Oscillators, Resonators |
| 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 |
|---|---|---|---|---|---|---|---|
| Output frequency range | fO | 0.67 |  | 170 | MHz |  | 1 |
| Frequency tolerance | f_tol | -50 |  | 50 | × 10-6 | T_use = -40 ºC ~ +105 ºC; includes initial tolerance, temperature, supply, reflow, load and aging (+25 ºC, 10 years) | 1 |
| Supply voltage | VCC | 1.62 |  | 3.63 | V | Rated range across all supply columns; T suffix = 1.8 V ~ 3.3 V | 1 |
| Operating temperature | T_use | -40 |  | 105 | ºC | Suffix H | 1 |
| Storage temperature | T_stg | -40 |  | 125 | ºC | Storage as single product | 1 |
| Current consumption | ICC |  |  | 3.2 | mA | T_use = +105 ºC; No load, fO = 20 MHz; VCC 1.62 V ~ 1.98 V | 1 |
| Current consumption | ICC |  |  | 3.3 | mA | T_use = +105 ºC; No load, fO = 20 MHz; VCC 1.98 V ~ 2.20 V | 1 |
| Current consumption | ICC |  |  | 3.4 | mA | T_use = +105 ºC; No load, fO = 20 MHz; VCC 2.20 V ~ 2.80 V | 1 |
| Current consumption | ICC |  |  | 3.5 | mA | T_use = +105 ºC; No load, fO = 20 MHz; VCC 2.70 V ~ 3.63 V | 1 |
| Current consumption | ICC |  |  | 5.5 | mA | T_use = +105 ºC; No load, fO = 170 MHz; VCC 1.62 V ~ 1.98 V | 1 |
| Current consumption | ICC |  |  | 5.8 | mA | T_use = +105 ºC; No load, fO = 170 MHz; VCC 1.98 V ~ 2.20 V | 1 |
| Current consumption | ICC |  |  | 6.7 | mA | T_use = +105 ºC; No load, fO = 170 MHz; VCC 2.20 V ~ 2.80 V | 1 |
| Current consumption | ICC |  |  | 8.1 | mA | T_use = +105 ºC; No load, fO = 170 MHz; VCC 2.70 V ~ 3.63 V | 1 |
| Output disable current | I_dis |  |  | 3.2 | mA | OE = GND, fO = 170 MHz; VCC 1.62 V ~ 1.98 V | 1 |
| Output disable current | I_dis |  |  | 3.3 | mA | OE = GND, fO = 170 MHz; VCC 2.20 V ~ 2.80 V | 1 |
| Output disable current | I_dis |  |  | 3.5 | mA | OE = GND, fO = 170 MHz; VCC 2.70 V ~ 3.63 V | 1 |
| Standby current | I_std |  |  | 0.9 | μA | T_use = +105 ºC; ST = GND; VCC 1.62 V ~ 1.98 V | 1 |
| Standby current | I_std |  |  | 1 | μA | T_use = +105 ºC; ST = GND; VCC 1.98 V ~ 2.20 V | 1 |
| Standby current | I_std |  |  | 1.5 | μA | T_use = +105 ºC; ST = GND; VCC 2.20 V ~ 2.80 V | 1 |
| Standby current | I_std |  |  | 2.5 | μA | T_use = +105 ºC; ST = GND; VCC 2.70 V ~ 3.63 V | 1 |
| Symmetry | SYM | 45 |  | 55 | % | 50 % VCC level | 1 |
| Output voltage high | VOH | 90 |  |  | % VCC | Default rise/fall time; IOH per VCC column (see table) | 1 |
| Output voltage low | VOL |  |  | 10 | % VCC | Default rise/fall time; IOL per VCC column (see table) | 1 |
| Output load condition | L_CMOS |  |  | 15 | pF |  | 1 |
| Input voltage high | VIH | 70 |  |  | % VCC | OE or ST pin | 1 |
| Input voltage low | VIL |  |  | 30 | % VCC | OE or ST pin | 1 |
| Rise and fall time (default) | tr/tf |  |  | 3 | ns | fO > 40 MHz; 20 % - 80 % VCC, L_CMOS = 15 pF | 1 |
| Rise and fall time (default) | tr/tf |  |  | 6 | ns | fO ≤ 40 MHz; 20 % - 80 % VCC, L_CMOS = 15 pF | 1 |
| Disable time | t_stp |  |  | 1 | μs | Measured from OE or ST pin crosses 30 % VCC | 1 |
| Enable time | t_sta |  |  | 1 | μs | Measured from OE pin crosses 70 % VCC | 1 |
| Resume time | t_res |  |  | 3 | ms | Measured from ST pin crosses 70 % VCC | 1 |
| Start-up time | t_str |  |  | 3 | ms | Measured from VCC reaches its rated minimum value, 1.62 V | 1 |
| ESD rating, Human Body Model | HBM | 2000 |  |  | V | Human Body Model (HBM) breakdown voltage | 6 |
| ESD rating, Machine Model | MM | 250 |  |  | V | Machine Model (MM) breakdown voltage | 6 |
| ESD rating, Charged Device Model | CDM | 750 |  |  | V | Charged Device Model (CDM) breakdown voltage | 6 |

## CAD (KiCad official)

- Symbol: `SG-8018CE 24.500000MHz TJHPA`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `sg-8018ce-24-500000mhz-tjhpa-etched.step` / `sg-8018ce-24-500000mhz-tjhpa-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sg-8018ce-24-500000mhz-tjhpa.step` / `sg-8018ce-24-500000mhz-tjhpa.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Seiko Epson datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588933655691735040) (8 pp, sha256 `ea831bb653e2e4c1`, retrieved 2026-10-15, 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/sg-8018ce-24-500000mhz-tjhpa-datasheet.pdf)