# 74VHC164FT

**TOSHIBA** · Shift Registers · TSSOP-14

74VHC164FT from TOSHIBA, in a TSSOP-14. 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 | A | input | Serial data input A, ANDed with B so one may be used as a data enable; inputs accept 0 to 5.5 V regardless of supply. |
| 2 | B | input | Serial data input B, ANDed with A so one may be used as a data enable; inputs accept 0 to 5.5 V regardless of supply. |
| 3 | QA | output | Parallel data output A (first stage of the 8-bit shift register). |
| 4 | QB | output | Parallel data output B of the shift register. |
| 5 | QC | output | Parallel data output C of the shift register. |
| 6 | QD | output | Parallel data output D of the shift register. |
| 7 | GND | power_in | Ground pin (0 V). |
| 8 | CK | input | Clock input; data shifts on the positive edge of CK. |
| 9 | CLR | input | Active-low overriding clear input that resets the register outputs. |
| 10 | QE | output | Parallel data output E of the shift register. |
| 11 | QF | output | Parallel data output F of the shift register. |
| 12 | QG | output | Parallel data output G of the shift register. |
| 13 | QH | output | Parallel data output H (last stage of the shift register). |
| 14 | VCC | power_in | Supply voltage, operating range 2.0 to 5.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TOSHIBA |
| Package | TSSOP-14 |
| Category | Logic |
| Pins | 14 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| High-level input voltage | VIH | 1.5 |  |  | V | Ta = 25 °C; VCC = 2.0 V | 5 |
| Low-level input voltage | VIL |  |  | 0.5 | V | Ta = 25 °C; VCC = 2.0 V | 5 |
| High-level output voltage | VOH | 1.9 |  |  | V | Ta = 25 °C; VIN = VIH or VIL; IOH = -50 µA; VCC = 2.0 V | 5 |
| High-level output voltage | VOH | 2.9 |  |  | V | Ta = 25 °C; VIN = VIH or VIL; IOH = -50 µA; VCC = 3.0 V | 5 |
| High-level output voltage | VOH | 4.4 |  |  | V | Ta = 25 °C; VIN = VIH or VIL; IOH = -50 µA; VCC = 4.5 V | 5 |
| High-level output voltage | VOH | 2.58 |  |  | V | Ta = 25 °C; VIN = VIH or VIL; IOH = -4 mA; VCC = 3.0 V | 5 |
| High-level output voltage | VOH | 3.94 |  |  | V | Ta = 25 °C; VIN = VIH or VIL; IOH = -8 mA; VCC = 4.5 V | 5 |
| Low-level output voltage | VOL |  |  | 0.1 | V | Ta = 25 °C; VIN = VIH or VIL; IOL = 50 µA; VCC = 2.0 V | 5 |
| Low-level output voltage | VOL |  |  | 0.36 | V | Ta = 25 °C; VIN = VIH or VIL; IOL = 4 mA; VCC = 3.0 V | 5 |
| Input leakage current | IIN | -0.1 |  | 0.1 | µA | Ta = 25 °C; VIN = 5.5 V or GND; VCC = 0 to 5.5 V | 5 |
| Quiescent supply current | ICC |  |  | 4 | µA | Ta = 25 °C; VIN = VCC or GND; VCC = 5.5 V | 5 |
| High-level input voltage | VIH | 1.5 |  |  | V | Ta = -40 to 125 °C; VCC = 2.0 V | 6 |
| Low-level input voltage | VIL |  |  | 0.5 | V | Ta = -40 to 125 °C; VCC = 2.0 V | 6 |
| High-level output voltage | VOH | 1.9 |  |  | V | Ta = -40 to 125 °C; VIN = VIH or VIL; IOH = -50 µA; VCC = 2.0 V | 6 |
| High-level output voltage | VOH | 2.9 |  |  | V | Ta = -40 to 125 °C; VIN = VIH or VIL; IOH = -50 µA; VCC = 3.0 V | 6 |
| High-level output voltage | VOH | 4.4 |  |  | V | Ta = -40 to 125 °C; VIN = VIH or VIL; IOH = -50 µA; VCC = 4.5 V | 6 |
| 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 |  |  | 0.1 | V | Ta = -40 to 125 °C; VIN = VIH or VIL; IOL = 50 µA; VCC = 2.0 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 |
| 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 |
| Supply voltage | VCC | -0.5 |  | 7 | V |  | 4 |
| Input voltage | VIN | -0.5 |  | 7 | V |  | 4 |
| Input diode current | IIK | -20 |  |  | mA |  | 4 |
| Output diode current | IOK | -20 |  | 20 | mA |  | 4 |
| Output current | IOUT | -25 |  | 25 | mA |  | 4 |
| VCC/ground current | ICC | -75 |  | 75 | mA |  | 4 |
| Power dissipation | PD |  |  | 180 | mW | Ta = -40 to 85 °C; derate -3.25 mW/°C from Ta = 85 to 125 °C until 50 mW | 4 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 4 |
| Supply voltage | VCC | 2 |  | 5.5 | V |  | 4 |
| Input voltage | VIN | 0 |  | 5.5 | V |  | 4 |
| Operating temperature | Topr | -40 |  | 125 | °C |  | 4 |
| Input rise and fall times | dt/dv | 0 |  | 100 | ns/V | VCC = 3.3 ±0.3 V | 4 |
| Input rise and fall times | dt/dv | 0 |  | 20 | ns/V | VCC = 5 ±0.5 V | 4 |
| Minimum pulse width (CK) | tw(L),tw(H) | 5 |  |  | ns | Ta = -40 to 125 °C; VCC = 3.3 ±0.3 V; tr = tf = 3 ns | 7 |
| Minimum pulse width (CLR) | tw(L) | 5 |  |  | ns | Ta = -40 to 125 °C; VCC = 3.3 ±0.3 V; tr = tf = 3 ns | 7 |
| Minimum setup time | tSth | 6 |  |  | ns | Ta = -40 to 125 °C; VCC = 3.3 ±0.3 V; tr = tf = 3 ns | 7 |
| Minimum setup time | tSth | 4.5 |  |  | ns | Ta = -40 to 125 °C; VCC = 5.0 ±0.5 V; tr = tf = 3 ns | 7 |
| Minimum hold time | tSth | 0 |  |  | ns | Ta = -40 to 125 °C; VCC = 3.3 ±0.3 V; tr = tf = 3 ns | 7 |
| Minimum hold time | tSth | 1 |  |  | ns | Ta = -40 to 125 °C; VCC = 5.0 ±0.5 V; tr = tf = 3 ns | 7 |
| Minimum removal time (CLR) | trem | 3.5 |  |  | ns | Ta = -40 to 125 °C; VCC = 3.3 ±0.3 V; tr = tf = 3 ns | 7 |
| Minimum removal time (CLR) | trem | 3 |  |  | ns | Ta = -40 to 125 °C; VCC = 5.0 ±0.5 V; tr = tf = 3 ns | 7 |
| Propagation delay time (CK-Q) | tPLH,tPHL | 1 |  | 17 | ns | Ta = -40 to 125 °C; VCC = 3.3 ±0.3 V; CL = 15 pF | 8 |
| Propagation delay time (CK-Q) | tPLH,tPHL | 1 |  | 20.5 | ns | Ta = -40 to 125 °C; VCC = 3.3 ±0.3 V; CL = 50 pF | 8 |
| Propagation delay time (CK-Q) | tPLH,tPHL | 1 |  | 12 | ns | Ta = -40 to 125 °C; VCC = 5.0 ±0.5 V; CL = 15 pF | 8 |
| Propagation delay time (CK-Q) | tPLH,tPHL | 1 |  | 14 | ns | Ta = -40 to 125 °C; VCC = 5.0 ±0.5 V; CL = 50 pF | 8 |
| Maximum clock frequency | fMAX | 60 |  |  | MHz | Ta = -40 to 125 °C; VCC = 3.3 ±0.3 V; CL = 15 pF | 8 |
| Maximum clock frequency | fMAX | 40 |  |  | MHz | Ta = -40 to 125 °C; VCC = 3.3 ±0.3 V; CL = 50 pF | 8 |
| Maximum clock frequency | fMAX | 100 |  |  | MHz | Ta = -40 to 125 °C; VCC = 5.0 ±0.5 V; CL = 15 pF | 8 |
| Maximum clock frequency | fMAX | 65 |  |  | MHz | Ta = -40 to 125 °C; VCC = 5.0 ±0.5 V; CL = 50 pF | 8 |
| Input capacitance | CIN |  |  | 10 | pF | Ta = -40 to 125 °C | 8 |

## CAD (KiCad official)

- Symbol: `74VHC164FT`
- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`
- 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files: `74vhc164ft-etched.step` / `74vhc164ft-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74vhc164ft.step` / `74vhc164ft.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TOSHIBA datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603180860204204032) (10 pp, sha256 `f1e157b3a6a5f18b`, retrieved 2026-10-18, tier: lcsc)
- **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/74vhc164ft-datasheet.pdf)