# 74VHC9541FT

**TOSHIBA** · Buffers, Drivers, Receivers, Transceivers · TSSOP-20-175mil

74VHC9541FT from TOSHIBA, in a TSSOP-20-175mil. 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 | CONT | input | Control input: logic LOW configures the buffers as inverters, logic HIGH as non-inverting buffers; Schmitt input, tolerant up to 5.5 V. |
| 2 | A1 | input | Data input 1 with Schmitt-trigger hysteresis, 0 to 5.5 V input range. |
| 3 | A2 | input | Data input 2 with Schmitt-trigger hysteresis, 0 to 5.5 V input range. |
| 4 | A3 | input | Data input 3 with Schmitt-trigger hysteresis, 0 to 5.5 V input range. |
| 5 | A4 | input | Data input 4 with Schmitt-trigger hysteresis, 0 to 5.5 V input range. |
| 6 | A5 | input | Data input 5 with Schmitt-trigger hysteresis, 0 to 5.5 V input range. |
| 7 | A6 | input | Data input 6 with Schmitt-trigger hysteresis, 0 to 5.5 V input range. |
| 8 | A7 | input | Data input 7 with Schmitt-trigger hysteresis, 0 to 5.5 V input range. |
| 9 | A8 | input | Data input 8 with Schmitt-trigger hysteresis, 0 to 5.5 V input range. |
| 10 | GND | power_in | Ground (0 V) supply pin. |
| 11 | Y8 | tri_state | 3-state output 8, high impedance when G is HIGH; IOH/IOL up to ±8 mA at VCC 4.5 V. |
| 12 | Y7 | tri_state | 3-state output 7, high impedance when G is HIGH; IOH/IOL up to ±8 mA at VCC 4.5 V. |
| 13 | Y6 | tri_state | 3-state output 6, high impedance when G is HIGH; IOH/IOL up to ±8 mA at VCC 4.5 V. |
| 14 | Y5 | tri_state | 3-state output 5, high impedance when G is HIGH; IOH/IOL up to ±8 mA at VCC 4.5 V. |
| 15 | Y4 | tri_state | 3-state output 4, high impedance when G is HIGH; IOH/IOL up to ±8 mA at VCC 4.5 V. |
| 16 | Y3 | tri_state | 3-state output 3, high impedance when G is HIGH; IOH/IOL up to ±8 mA at VCC 4.5 V. |
| 17 | Y2 | tri_state | 3-state output 2, high impedance when G is HIGH; IOH/IOL up to ±8 mA at VCC 4.5 V. |
| 18 | Y1 | tri_state | 3-state output 1, high impedance when G is HIGH; IOH/IOL up to ±8 mA at VCC 4.5 V. |
| 19 | G | input | Active-low output enable input (G-bar): a logic HIGH places outputs Y1-Y8 in the high-impedance state. |
| 20 | VCC | power_in | Positive supply voltage, operating range 2.0 V to 5.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TOSHIBA |
| Package | TSSOP-20-175mil |
| Category | Logic |
| Pins | 20 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Positive threshold voltage | VP |  |  | 2.2 | V | Ta = 25 °C; VIN = VIH or VIL; VCC = 3.0 V | 4 |
| Positive threshold voltage | VP |  |  | 3.15 | V | Ta = 25 °C; VIN = VIH or VIL; VCC = 4.5 V | 4 |
| Positive threshold voltage | VP |  |  | 3.85 | V | Ta = 25 °C; VIN = VIH or VIL; VCC = 5.5 V | 4 |
| Negative threshold voltage | VN | 0.9 |  | 1.2 | V | Ta = 25 °C; VIN = VIH or VIL; VCC = 3.0 V | 4 |
| Negative threshold voltage | VN | 1.35 |  | 1.4 | V | Ta = 25 °C; VIN = VIH or VIL; VCC = 4.5 V | 4 |
| Negative threshold voltage | VN | 1.65 |  | 1.6 | V | Ta = 25 °C; VIN = VIH or VIL; VCC = 5.5 V | 4 |
| Hysteresis voltage | VH | 0.3 |  |  | V | Ta = 25 °C; VIN = VIH or VIL; VCC = 3.0 V | 4 |
| Hysteresis voltage | VH | 0.4 |  |  | V | Ta = 25 °C; VIN = VIH or VIL; VCC = 4.5 V | 4 |
| Hysteresis voltage | VH | 0.5 |  |  | V | Ta = 25 °C; VIN = VIH or VIL; VCC = 5.5 V | 4 |
| High-level output voltage | VOH | 1.9 |  |  | V | Ta = 25 °C; VIN = VIH or VIL; IOH = -50 µA; VCC = 2.0 V | 4 |
| High-level output voltage | VOH | 2.9 |  |  | V | Ta = 25 °C; VIN = VIH or VIL; IOH = -50 µA; VCC = 3.0 V | 4 |
| High-level output voltage | VOH | 4.4 |  |  | V | Ta = 25 °C; VIN = VIH or VIL; IOH = -50 µA; VCC = 4.5 V | 4 |
| High-level output voltage | VOH | 2.58 |  |  | V | Ta = 25 °C; VIN = VIH or VIL; IOH = -4 mA; VCC = 3.0 V | 4 |
| High-level output voltage | VOH | 3.94 |  |  | V | Ta = 25 °C; VIN = VIH or VIL; IOH = -8 mA; VCC = 4.5 V | 4 |
| Low-level output voltage | VOL |  |  | 0.1 | V | Ta = 25 °C; VIN = VIH or VIL; IOL = 50 µA; VCC = 2.0 V | 4 |
| Low-level output voltage | VOL |  |  | 0.36 | V | Ta = 25 °C; VIN = VIH or VIL; IOL = 4 mA; VCC = 3.0 V | 4 |
| 3-state output OFF-state leakage current | IOZ | -0.25 |  | 0.25 | µA | Ta = 25 °C; VOUT = VCC or GND; VCC = 5.5 V | 4 |
| Input leakage current | IIN | -0.1 |  | 0.1 | µA | Ta = 25 °C; VIN = 5.5 V or GND; VCC = 0 to 5.5 V | 4 |
| Quiescent supply current | ICC |  |  | 4 | µA | Ta = 25 °C; VIN = VCC or GND; VCC = 5.5 V | 4 |
| High-level output voltage | VOH | 2.48 |  |  | V | Ta = -40 to 85 °C; VIN = VIH or VIL; IOH = -4 mA; VCC = 3.0 V | 5 |
| High-level output voltage | VOH | 3.8 |  |  | V | Ta = -40 to 85 °C; VIN = VIH or VIL; IOH = -8 mA; VCC = 4.5 V | 5 |
| Low-level output voltage | VOL |  |  | 0.44 | V | Ta = -40 to 85 °C; VIN = VIH or VIL; IOL = 4 mA; VCC = 3.0 V | 5 |
| 3-state output OFF-state leakage current | IOZ | -2.5 |  | 2.5 | µA | Ta = -40 to 85 °C; VOUT = VCC or GND; VCC = 5.5 V | 5 |
| Input leakage current | IIN | -1 |  | 1 | µA | Ta = -40 to 85 °C; VIN = 5.5 V or GND; VCC = 0 to 5.5 V | 5 |
| Quiescent supply current | ICC |  |  | 40 | µA | Ta = -40 to 85 °C; VIN = VCC or GND; VCC = 5.5 V | 5 |
| High-level output voltage | VOH | 2.4 |  |  | V | Ta = -40 to 125 °C; VIN = VIH or VIL; IOH = -4 mA; VCC = 3.0 V | 6 |
| High-level output voltage | VOH | 3.7 |  |  | V | Ta = -40 to 125 °C; VIN = VIH or VIL; IOH = -8 mA; VCC = 4.5 V | 6 |
| Low-level output voltage | VOL |  |  | 0.55 | V | Ta = -40 to 125 °C; VIN = VIH or VIL; IOL = 4 mA; VCC = 3.0 V | 6 |
| 3-state output OFF-state leakage current | IOZ | -10 |  | 10 | µA | Ta = -40 to 125 °C; VOUT = VCC or GND; VCC = 5.5 V | 6 |
| Input leakage current | IIN | -2 |  | 2 | µA | Ta = -40 to 125 °C; VIN = 5.5 V or GND; VCC = 0 to 5.5 V | 6 |
| Quiescent supply current | ICC |  |  | 80 | µA | Ta = -40 to 125 °C; VIN = VCC or GND; VCC = 5.5 V | 6 |
| Input capacitance | CIN |  |  | 10 | pF | Ta = 25 °C | 7 |
| Input capacitance | CIN |  |  | 10 | pF | Ta = -40 to 125 °C | 8 |
| Supply voltage | VCC | -0.5 |  | 7 | V |  | 3 |
| Input voltage | VIN | -0.5 |  | 7 | V |  | 3 |
| Output voltage | VOUT | -0.5 |  |  | V | Printed maximum is VCC + 0.5 V (not a numeric value) | 3 |
| Input diode current | IIK | -20 |  |  | mA | Printed as -20 only | 3 |
| Output diode current | IOK | -20 |  | 20 | mA |  | 3 |
| Output current | IOUT | -25 |  | 25 | mA |  | 3 |
| VCC/ground current | ICC | -75 |  | 75 | mA |  | 3 |
| Power dissipation | PD |  |  | 180 | mW | Ta = -40 to 85 °C; derate -3.25 mW/°C from 85 to 125 °C until 50 mW | 3 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 3 |
| Supply voltage | VCC | 2 |  | 5.5 | V | Operating range | 3 |
| Input voltage | VIN | 0 |  | 5.5 | V | Operating range | 3 |
| Output voltage | VOUT | 0 |  |  | V | Operating range; maximum printed as VCC | 3 |
| Operating temperature | Topr | -40 |  | 125 | °C |  | 3 |

## CAD (KiCad official)

- Symbol: `74VHC9541FT`
- Footprint: `Adom_Gen:TOSHIBA_74`
- 3D model: TSSOP-20-175mil (KiCad packages3D, STEP)
- 3D model files: `74vhc9541ft-etched.step` / `74vhc9541ft-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74vhc9541ft.step` / `74vhc9541ft.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TOSHIBA datasheet](docs/74vhc9541ft-datasheet.pdf) (10 pp, sha256 `c6a90177e75bdbec`, retrieved 2026-10-18, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/74vhc9541ft-datasheet.pdf)