component
NCN4555MNR2G
Public Made by Adomby adom
onsemi Translators / Level Shifters, QFN-16-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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NCN4555MNR2G
onsemi · Translators / Level Shifters · QFN-16-EP(3x3)
NCN4555MNR2G from onsemi, in a QFN-16-EP(3x3). 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 | STOP | input | Power-down mode pin: a Low level activates the low-current shutdown mode and resets the SIM interface by switching off SIM_VCC, while High gives normal operation. |
| 2 | MOD_VCC | input | Selects the SIM_VCC output voltage: Low programs 1.8 V and High programs 3 V. |
| 3 | VDD | power_in | Microcontroller-side supply that sets the level shifter input stage; a 0.1 µF bypass capacitor is required, and SIM_VCC is disabled with the device in shutdown when VDD is below 1.1 V typical. |
| 4 | NC | unconnected | No connect. |
| 5 | VBAT | power_in | DC-DC converter supply input with a range of 2.7 V to 5.5 V, which must be bypassed by a 0.1 µF capacitor. |
| 6 | NC | unconnected | No connect. |
| 7 | SIM_VCC | power_out | Card supply output from the internal LDO, programmable to 1.8 V or 3.0 V, requiring a 1.0 µF minimum ceramic capacitor to ground. |
| 8 | SIM_I/O | bidirectional | Serial I/O connection to the card connector with a bidirectional level translator and a 14 kΩ typical pullup providing a high-impedance state for the card I/O link. |
| 9 | SIM_RST | output | Level-translated reset output connected to the RESET pin of the card connector. |
| 10 | GND | power_in | Ground reference for the integrated circuit and associated signals; care must be taken to avoid voltage spikes during normal operation. |
| 11 | SIM_CLK | output | Level-translated clock output to the CLOCK pin of the card connector, with its level set by SIM_VCC. |
| 12 | NC | unconnected | No connect. |
| 13 | CLK | input | Clock input from the external controller, which should have a duty cycle within the specified min/max limits (typically 50%). |
| 14 | RST | input | Reset input that is level-shifted to the SIM card according to the programmed SIM_VCC value. |
| 15 | I/O | bidirectional | Serial I/O connection to the external microcontroller with a bidirectional level translator and a built-in constant 18 kΩ typical resistor that provides a high-impedance state when not activated. |
| 16 | NC | unconnected | No connect. |
| 17 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | QFN-16-EP(3x3) |
| Category | Logic ICs |
| Pins | 17 |
CAD (KiCad official)
- Symbol:
NCN4555MNR2G - Footprint:
Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm - 3D model: QFN-16-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
ncn4555mnr2g-etched.step/ncn4555mnr2g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ncn4555mnr2g.step/ncn4555mnr2g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (12 pp, sha256
d7485c3e29c4e88d, retrieved 2026-10-27, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).