# TC74VHC541F

**TOSHIBA** · Buffers, Drivers, Receivers, Transceivers · SOP-20

TC74VHC541F from TOSHIBA, in a SOP-20. 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 | G1 | input | Active-low output enable 1; when G1 or G2 is high the Y outputs are in the high-impedance state. |
| 2 | A1 | input | Data input 1, accepts 0 to 5.5 V regardless of supply voltage. |
| 3 | A2 | input | Data input 2, accepts 0 to 5.5 V regardless of supply voltage. |
| 4 | A3 | input | Data input 3, accepts 0 to 5.5 V regardless of supply voltage. |
| 5 | A4 | input | Data input 4, accepts 0 to 5.5 V regardless of supply voltage. |
| 6 | A5 | input | Data input 5, accepts 0 to 5.5 V regardless of supply voltage. |
| 7 | A6 | input | Data input 6, accepts 0 to 5.5 V regardless of supply voltage. |
| 8 | A7 | input | Data input 7, accepts 0 to 5.5 V regardless of supply voltage. |
| 9 | A8 | input | Data input 8, accepts 0 to 5.5 V regardless of supply voltage. |
| 10 | GND | power_in | Ground (0 V) reference. |
| 11 | Y8 | tri_state | Non-inverting 3-state output 8 following A8, high-impedance when G1 or G2 is high. |
| 12 | Y7 | tri_state | Non-inverting 3-state output 7 following A7, high-impedance when G1 or G2 is high. |
| 13 | Y6 | tri_state | Non-inverting 3-state output 6 following A6, high-impedance when G1 or G2 is high. |
| 14 | Y5 | tri_state | Non-inverting 3-state output 5 following A5, high-impedance when G1 or G2 is high. |
| 15 | Y4 | tri_state | Non-inverting 3-state output 4 following A4, high-impedance when G1 or G2 is high. |
| 16 | Y3 | tri_state | Non-inverting 3-state output 3 following A3, high-impedance when G1 or G2 is high. |
| 17 | Y2 | tri_state | Non-inverting 3-state output 2 following A2, high-impedance when G1 or G2 is high. |
| 18 | Y1 | tri_state | Non-inverting 3-state output 1 following A1, high-impedance when G1 or G2 is high. |
| 19 | G2 | input | Active-low output enable 2; when G1 or G2 is high the Y outputs are in the high-impedance state. |
| 20 | VCC | power_in | Supply voltage, operating range 2.0 to 5.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TOSHIBA |
| Package | SOP-20 |
| Category | Logic |
| Pins | 20 |

## CAD (KiCad official)

- Symbol: `TC74VHC541F`
- Footprint: `Package_SO:SOP-20_7.5x12.8mm_P1.27mm`
- 3D model: SOP-20, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 2.65 mm nominal SOIC height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `tc74vhc541f-etched.step` / `tc74vhc541f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tc74vhc541f.step` / `tc74vhc541f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TOSHIBA datasheet](docs/tc74vhc541f-datasheet.pdf) (9 pp, sha256 `48467a20f5a945a4`, retrieved 2026-10-24, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/tc74vhc541f-datasheet.pdf)