# 74VHCV245FT

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

74VHCV245FT from TOSHIBA, 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 | DIR | input | Direction control input that sets A-to-B or B-to-A transmission; inputs accept 0 to 5.5 V and have Schmitt hysteresis. |
| 2 | A1 | bidirectional | A bus I/O 1, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 3 | A2 | bidirectional | A bus I/O 2, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 4 | A3 | bidirectional | A bus I/O 3, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 5 | A4 | bidirectional | A bus I/O 4, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 6 | A5 | bidirectional | A bus I/O 5, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 7 | A6 | bidirectional | A bus I/O 6, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 8 | A7 | bidirectional | A bus I/O 7, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 9 | A8 | bidirectional | A bus I/O 8, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 10 | GND | power_in | Ground reference (0 V). |
| 11 | B8 | bidirectional | B bus I/O 8, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 12 | B7 | bidirectional | B bus I/O 7, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 13 | B6 | bidirectional | B bus I/O 6, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 14 | B5 | bidirectional | B bus I/O 5, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 15 | B4 | bidirectional | B bus I/O 4, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 16 | B3 | bidirectional | B bus I/O 3, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 17 | B2 | bidirectional | B bus I/O 2, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 18 | B1 | bidirectional | B bus I/O 1, bidirectional with hysteresis, 0 to 5.5 V on the bus pin, high-impedance when disabled. |
| 19 | G | input | Active-low output enable input (G-bar); high level disables the device and isolates the buses; accepts 0 to 5.5 V. |
| 20 | VCC | power_in | Supply voltage, operating range 1.8 V to 5.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TOSHIBA |
| Package | TSSOP-20 |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | -0.5 |  | 7 | V |  | 3 |
| Input voltage (DIR, G) | VIN | -0.5 |  | 7 | V |  | 3 |
| Bus I/O voltage | VI/O | -0.5 |  | 7 | V | OFF state (Note 1) | 3 |
| Bus I/O voltage | VI/O | -0.5 |  |  | V | High (H) or Low (L) state (Note 2); upper limit printed as VCC + 0.5 V | 3 |
| Input diode current | IIK | -50 |  |  | mA |  | 3 |
| Output diode current | IOK | -50 |  | 50 | mA | VOUT < GND, VOUT > VCC (Note 3) | 3 |
| Output current | IOUT | -50 |  | 50 | mA | High (H) or Low (L) state (Note 2) | 3 |
| Power dissipation | PD |  |  | 180 | mW | Ta = -40 to 85 °C (Note 4); derate -3.25 mW/°C from 85 to 125 °C to 50 mW | 3 |
| VCC/ground current | ICC/IGND | -100 |  | 100 | mA |  | 3 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 3 |
| Supply voltage | VCC | 1.8 |  | 5.5 | V |  | 3 |
| Input voltage (DIR, G) | VIN | 0 |  | 5.5 | V |  | 3 |
| Bus I/O voltage | VI/O | 0 |  | 5.5 | V | OFF state (Note 1) | 3 |
| Bus I/O voltage | VI/O | 0 |  |  | V | High (H) or Low (L) state (Note 2); upper limit printed as VCC | 3 |
| Operating temperature | Topr | -40 |  | 125 | °C |  | 3 |
| Input rise and fall times | dt/dv | 0 |  | 20 | ms/V | VCC = 3.3 ±0.3 V | 3 |
| Input rise and fall times | dt/dv | 0 |  | 1 | ms/V | VCC = 5.0 ±0.5 V | 3 |
| 3-state output OFF-state leakage current | IOZ | -0.5 |  | 0.5 | µA | Ta = 25 °C; VOUT = 0 to 5.5 V; VCC = 1.8 to 5.5 V | 4 |
| Power-OFF leakage current | IOFF |  |  | 0.5 | µA | Ta = 25 °C; VIN/VOUT = 5.5 V; VCC = 0 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 |  |  | 2 | µA | Ta = 25 °C; VIN = VCC or GND; VCC = 5.5 V | 4 |
| 3-state output OFF-state leakage current | IOZ | -5 |  | 5 | µA | Ta = -40 to 85 °C; VOUT = 0 to 5.5 V; VCC = 1.8 to 5.5 V | 5 |
| Power-OFF leakage current | IOFF |  |  | 5 | µA | Ta = -40 to 85 °C; VIN/VOUT = 5.5 V; VCC = 0 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 |  |  | 20 | µA | Ta = -40 to 85 °C; VIN = VCC or GND; VCC = 5.5 V | 5 |
| 3-state output OFF-state leakage current | IOZ | -20 |  | 20 | µA | Ta = -40 to 125 °C; VOUT = 0 to 5.5 V; VCC = 1.8 to 5.5 V | 6 |
| Power-OFF leakage current | IOFF |  |  | 20 | µA | Ta = -40 to 125 °C; VIN/VOUT = 5.5 V; VCC = 0 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 |  |  | 40 | µA | Ta = -40 to 125 °C; VIN = VCC or GND; VCC = 5.5 V | 6 |
| High-level output voltage | VOH | 1.7 |  |  | V | Ta = 25 °C; IOH = -50 µA; VCC = 1.8 V | 4 |
| High-level output voltage | VOH | 2.9 |  |  | V | Ta = 25 °C; IOH = -50 µA; VCC = 3.0 V | 4 |
| High-level output voltage | VOH | 4.4 |  |  | V | Ta = 25 °C; IOH = -50 µA; VCC = 4.5 V | 4 |
| High-level output voltage | VOH | 2.58 |  |  | V | Ta = 25 °C; IOH = -8 mA; VCC = 3.0 V | 4 |
| High-level output voltage | VOH | 3.94 |  |  | V | Ta = 25 °C; IOH = -8 mA; VCC = 4.5 V | 4 |
| Low-level output voltage | VOL |  |  | 0.1 | V | Ta = 25 °C; IOL = 50 µA; VCC = 1.8 V | 4 |
| Low-level output voltage | VOL |  |  | 0.36 | V | Ta = 25 °C; IOL = 8 mA; VCC = 3.0 V | 4 |
| Low-level output voltage | VOL |  |  | 0.44 | V | Ta = 25 °C; IOL = 8 mA; VCC = 4.5 V | 4 |
| Propagation delay time | tPLH,tPHL |  |  | 13 | ns | Ta = 25 °C; CL = 15 pF; VCC = 2.5 ±0.2 V; input tr = tf = 3 ns | 7 |
| Propagation delay time | tPLH,tPHL |  |  | 15.9 | ns | Ta = 25 °C; CL = 50 pF; VCC = 2.5 ±0.2 V; input tr = tf = 3 ns | 7 |
| Propagation delay time | tPLH,tPHL |  |  | 8.4 | ns | Ta = 25 °C; CL = 15 pF; VCC = 3.3 ±0.3 V; input tr = tf = 3 ns | 7 |
| Propagation delay time | tPLH,tPHL |  |  | 11.9 | ns | Ta = 25 °C; CL = 50 pF; VCC = 3.3 ±0.3 V; input tr = tf = 3 ns | 7 |
| Propagation delay time | tPLH,tPHL |  |  | 5.5 | ns | Ta = 25 °C; CL = 15 pF; VCC = 5.0 ±0.5 V; input tr = tf = 3 ns | 7 |
| Propagation delay time | tPLH,tPHL |  |  | 7.5 | ns | Ta = 25 °C; CL = 50 pF; VCC = 5.0 ±0.5 V; input tr = tf = 3 ns | 7 |
| 3-state output enable time | tPZL,tPZH |  |  | 19.9 | ns | Ta = 25 °C; CL = 15 pF; RL = 1 kΩ; VCC = 2.5 ±0.2 V; input tr = tf = 3 ns | 7 |
| 3-state output enable time | tPZL,tPZH |  |  | 22.7 | ns | Ta = 25 °C; CL = 50 pF; RL = 1 kΩ; VCC = 2.5 ±0.2 V; input tr = tf = 3 ns | 7 |
| 3-state output enable time | tPZL,tPZH |  |  | 13.2 | ns | Ta = 25 °C; CL = 15 pF; RL = 1 kΩ; VCC = 3.3 ±0.3 V; input tr = tf = 3 ns | 7 |
| 3-state output enable time | tPZL,tPZH |  |  | 16.7 | ns | Ta = 25 °C; CL = 50 pF; RL = 1 kΩ; VCC = 3.3 ±0.3 V; input tr = tf = 3 ns | 7 |
| 3-state output enable time | tPZL,tPZH |  |  | 8.5 | ns | Ta = 25 °C; CL = 15 pF; RL = 1 kΩ; VCC = 5.0 ±0.5 V; input tr = tf = 3 ns | 7 |
| 3-state output enable time | tPZL,tPZH |  |  | 10.6 | ns | Ta = 25 °C; CL = 50 pF; RL = 1 kΩ; VCC = 5.0 ±0.5 V; input tr = tf = 3 ns | 7 |
| 3-state output disable time | tPLZ,tPHZ |  |  | 23.1 | ns | Ta = 25 °C; CL = 50 pF; RL = 1 kΩ; VCC = 2.5 ±0.2 V; input tr = tf = 3 ns | 7 |
| 3-state output disable time | tPLZ,tPHZ |  |  | 15.8 | ns | Ta = 25 °C; CL = 50 pF; RL = 1 kΩ; VCC = 3.3 ±0.3 V; input tr = tf = 3 ns | 7 |
| 3-state output disable time | tPLZ,tPHZ |  |  | 9.7 | ns | Ta = 25 °C; CL = 50 pF; RL = 1 kΩ; VCC = 5.0 ±0.5 V; input tr = tf = 3 ns | 7 |
| Output skew | tosLH,tosHL |  |  | 2 | ns | Ta = 25 °C; CL = 50 pF; VCC = 2.5 ±0.2 V; Note 1 (guaranteed by design) | 7 |
| Output skew | tosLH,tosHL |  |  | 1.5 | ns | Ta = 25 °C; CL = 50 pF; VCC = 3.3 ±0.3 V; Note 1 (guaranteed by design) | 7 |
| Output skew | tosLH,tosHL |  |  | 1 | ns | Ta = 25 °C; CL = 50 pF; VCC = 5.0 ±0.5 V; Note 1 (guaranteed by design) | 7 |

## CAD (KiCad official)

- Symbol: `74VHCV245FT`
- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`
- 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files: `74vhcv245ft-etched.step` / `74vhcv245ft-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74vhcv245ft.step` / `74vhcv245ft.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TOSHIBA datasheet](docs/74vhcv245ft-datasheet.pdf) (11 pp, sha256 `726ce051db5ca60e`, 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/74vhcv245ft-datasheet.pdf)