# 74VHC541MTCX

**onsemi** · Buffers / Drivers · TSSOP-20

74VHC541MTCX from onsemi, in a TSSOP-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 | OE1 | input | 3-STATE output enable input 1, active low; outputs are high impedance when OE1 or OE2 is HIGH. |
| 2 | I0 | input | Buffer input 0; tolerates 0V to 7V regardless of supply voltage. |
| 3 | I1 | input | Buffer input 1; tolerates 0V to 7V regardless of supply voltage. |
| 4 | I2 | input | Buffer input 2; tolerates 0V to 7V regardless of supply voltage. |
| 5 | I3 | input | Buffer input 3; tolerates 0V to 7V regardless of supply voltage. |
| 6 | I4 | input | Buffer input 4; tolerates 0V to 7V regardless of supply voltage. |
| 7 | I5 | input | Buffer input 5; tolerates 0V to 7V regardless of supply voltage. |
| 8 | I6 | input | Buffer input 6; tolerates 0V to 7V regardless of supply voltage. |
| 9 | I7 | input | Buffer input 7; tolerates 0V to 7V regardless of supply voltage. |
| 10 | GND | power_in | Ground pin. |
| 11 | O7 | tri_state | 3-STATE output 7, non-inverting buffer of I7. |
| 12 | O6 | tri_state | 3-STATE output 6, non-inverting buffer of I6. |
| 13 | O5 | tri_state | 3-STATE output 5, non-inverting buffer of I5. |
| 14 | O4 | tri_state | 3-STATE output 4, non-inverting buffer of I4. |
| 15 | O3 | tri_state | 3-STATE output 3, non-inverting buffer of I3. |
| 16 | O2 | tri_state | 3-STATE output 2, non-inverting buffer of I2. |
| 17 | O1 | tri_state | 3-STATE output 1, non-inverting buffer of I1. |
| 18 | O0 | tri_state | 3-STATE output 0, non-inverting buffer of I0. |
| 19 | OE2 | input | 3-STATE output enable input 2, active low; outputs are high impedance when OE1 or OE2 is HIGH. |
| 20 | VCC | power_in | Supply voltage, recommended 2.0V to 5.5V (absolute maximum 7.0V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | TSSOP-20 |
| Category | Logic ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VCC | -0.5 |  | 7 | V |  | 3 |
| DC Input Voltage | VIN | -0.5 |  | 7 | V |  | 3 |
| DC Output Voltage | VOUT | -0.5 |  |  | V | -0.5V to VCC + 0.5V | 3 |
| Input Diode Current | IIK | -20 |  |  | mA |  | 3 |
| Output Diode Current | IOK | -20 |  | 20 | mA |  | 3 |
| DC Output Current | IOUT | -25 |  | 25 | mA |  | 3 |
| DC VCC/GND Current | ICC | -75 |  | 75 | mA |  | 3 |
| Storage Temperature | TSTG | -65 |  | 150 | °C |  | 3 |
| Lead Temperature | TL |  |  | 260 | °C | Soldering, 10 seconds | 3 |
| Supply Voltage | VCC | 2 |  | 5.5 | V |  | 3 |
| Input Voltage | VIN | 0 |  | 5.5 | V |  | 3 |
| Output Voltage | VOUT | 0 |  |  | V | 0V to VCC | 3 |
| Operating Temperature | TOPR | -40 |  | 85 | °C |  | 3 |
| Input Rise and Fall Time | tr, tf | 0 |  | 100 | ns/V | VCC = 3.3V ±0.3V | 3 |
| Input Rise and Fall Time | tr, tf | 0 |  | 20 | ns/V | VCC = 5.0V ±0.5V | 3 |
| HIGH Level Input Voltage | VIH | 1.5 |  |  | V | VCC = 2.0V, TA = -40°C to 85°C | 3 |
| HIGH Level Input Voltage | VIH | 0.7 |  |  | xVCC | VCC = 3.0-5.5V, TA = -40°C to 85°C | 3 |
| LOW Level Input Voltage | VIL |  |  | 0.5 | V | VCC = 2.0V, TA = -40°C to 85°C | 3 |
| LOW Level Input Voltage | VIL |  |  | 0.3 | xVCC | VCC = 3.0-5.5V, TA = -40°C to 85°C | 3 |
| HIGH Level Output Voltage | VOH | 1.9 |  |  | V | VCC = 2.0V, VIN = VIH or VIL, IOH = -50 µA, TA = -40°C to 85°C | 3 |
| HIGH Level Output Voltage | VOH | 2.9 |  |  | V | VCC = 3.0V, VIN = VIH or VIL, IOH = -50 µA, TA = -40°C to 85°C | 3 |
| HIGH Level Output Voltage | VOH | 4.4 |  |  | V | VCC = 4.5V, VIN = VIH or VIL, IOH = -50 µA, TA = -40°C to 85°C | 3 |
| HIGH Level Output Voltage | VOH | 2.48 |  |  | V | VCC = 3.0V, IOH = -4 mA, TA = -40°C to 85°C | 3 |
| HIGH Level Output Voltage | VOH | 3.8 |  |  | V | VCC = 4.5V, IOH = -8 mA, TA = -40°C to 85°C | 3 |
| LOW Level Output Voltage | VOL |  |  | 0.1 | V | VCC = 2.0V, VIN = VIH or VIL, IOL = 50 µA, TA = -40°C to 85°C | 3 |
| LOW Level Output Voltage | VOL |  |  | 0.44 | V | VCC = 3.0V, IOL = 4 mA, TA = -40°C to 85°C | 3 |
| 3-STATE Output Off-State Current | IOZ | -2.5 |  | 2.5 | µA | VCC = 5.5V, VIN = VIH or VIL, VOUT = VCC or GND, TA = -40°C to 85°C | 3 |
| Input Leakage Current | IIN | -1 |  | 1 | µA | VCC = 0-5.5V, VIN = 5.5V or GND, TA = -40°C to 85°C | 3 |
| Quiescent Supply Current | ICC |  |  | 40 | µA | VCC = 5.5V, VIN = VCC or GND, TA = -40°C to 85°C | 3 |
| Quiescent Supply Current | ICC |  |  | 4 | µA | VCC = 5.5V, VIN = VCC or GND, TA = 25°C | 3 |
| Quiet Output Maximum Dynamic VOL | VOLP |  | 0.9 | 1.2 | V | VCC = 5.0V, CL = 50 pF, TA = 25°C | 3 |
| Quiet Output Minimum Dynamic VOL | VOLV | -1 | -0.8 |  | V | VCC = 5.0V, CL = 50 pF, TA = 25°C | 3 |
| Minimum HIGH Level Dynamic Input Voltage | VIHD | 3.5 |  |  | V | VCC = 5.0V, CL = 50 pF, TA = 25°C | 3 |
| Maximum HIGH Level Dynamic Input Voltage | VILD |  |  | 1.5 | V | VCC = 5.0V, CL = 50 pF, TA = 25°C | 3 |
| Propagation Delay Time | tPLH, tPHL | 1 |  | 8.5 | ns | VCC = 3.3V ±0.3V, CL = 15 pF, TA = -40°C to 85°C | 4 |
| Propagation Delay Time | tPLH, tPHL | 1 |  | 12 | ns | VCC = 3.3V ±0.3V, CL = 50 pF, TA = -40°C to 85°C | 4 |
| Propagation Delay Time | tPLH, tPHL | 1 |  | 6 | ns | VCC = 5.0V ±0.5V, CL = 15 pF, TA = -40°C to 85°C | 4 |
| Propagation Delay Time | tPLH, tPHL | 1 |  | 8 | ns | VCC = 5.0V ±0.5V, CL = 50 pF, TA = -40°C to 85°C | 4 |
| 3-STATE Output Enable Time | tPZL, tPZH | 1 |  | 12.5 | ns | VCC = 3.3V ±0.3V, RL = 1 kΩ, CL = 15 pF, TA = -40°C to 85°C | 4 |
| 3-STATE Output Enable Time | tPZL, tPZH | 1 |  | 16 | ns | VCC = 3.3V ±0.3V, RL = 1 kΩ, CL = 50 pF, TA = -40°C to 85°C | 4 |
| 3-STATE Output Enable Time | tPZL, tPZH | 1 |  | 8.5 | ns | VCC = 5.0V ±0.5V, RL = 1 kΩ, CL = 15 pF, TA = -40°C to 85°C | 4 |
| 3-STATE Output Enable Time | tPZL, tPZH | 1 |  | 10.5 | ns | VCC = 5.0V ±0.5V, RL = 1 kΩ, CL = 50 pF, TA = -40°C to 85°C | 4 |
| 3-STATE Output Disable Time | tPLZ, tPHZ | 1 |  | 17.5 | ns | VCC = 3.3V ±0.3V, RL = 1 kΩ, CL = 50 pF, TA = -40°C to 85°C | 4 |
| 3-STATE Output Disable Time | tPLZ, tPHZ | 1 |  | 10 | ns | VCC = 5.0V ±0.5V, CL = 50 pF, TA = -40°C to 85°C | 4 |
| Output to Output Skew | tOSLH, tOSHL |  |  | 1.5 | ns | VCC = 3.3V ±0.3V, CL = 50 pF, TA = -40°C to 85°C (Note 4) | 4 |
| Output to Output Skew | tOSLH, tOSHL |  |  | 1 | ns | VCC = 5.0V ±0.5V, CL = 50 pF, TA = -40°C to 85°C (Note 4) | 4 |
| Input Capacitance | CIN |  | 4 | 10 | pF | VCC = Open | 4 |
| Output Capacitance | COUT |  | 6 |  | pF | VCC = 5.0V | 4 |
| Power Dissipation Capacitance | CPD |  | 18 |  | pF | Note 5 | 4 |

## CAD (KiCad official)

- Symbol: `74VHC541MTCX`
- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`
- 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files: `74vhc541mtcx-etched.step` / `74vhc541mtcx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74vhc541mtcx.step` / `74vhc541mtcx.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/74vhc541mtcx-d.pdf) (9 pp, sha256 `0707d5a01e161fe0`, retrieved 2026-10-30, 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/74vhc541mtcx-datasheet.pdf)