# SN74HC4066N

**Texas Instruments** · Analog Switches, Multiplexers · PDIP-14

SN74HC4066N from Texas Instruments, in a PDIP-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 | 1A | bidirectional | Switch 1 input/output terminal, passes analog or digital signals up to VCC in either direction when 1C is high. |
| 2 | 1B | bidirectional | Switch 1 output/input terminal, the other side of switch 1 from 1A. |
| 3 | 2B | bidirectional | Switch 2 output/input terminal, the other side of switch 2 from 2A. |
| 4 | 2A | bidirectional | Switch 2 input/output terminal, passes analog or digital signals up to VCC in either direction when 2C is high. |
| 5 | 2C | input | Switch 2 control input; high turns switch 2 on, low turns it off. |
| 6 | 3C | input | Switch 3 control input; high turns switch 3 on, low turns it off. |
| 7 | GND | power_in | Ground. |
| 8 | 3A | bidirectional | Switch 3 input/output terminal, passes analog or digital signals up to VCC in either direction when 3C is high. |
| 9 | 3B | bidirectional | Switch 3 output/input terminal, the other side of switch 3 from 3A. |
| 10 | 4B | bidirectional | Switch 4 output/input terminal, the other side of switch 4 from 4A. |
| 11 | 4A | bidirectional | Switch 4 input/output terminal, passes analog or digital signals up to VCC in either direction when 4C is high. |
| 12 | 4C | input | Switch 4 control input; high turns switch 4 on, low turns it off. |
| 13 | 1C | input | Switch 1 control input; high turns switch 1 on, low turns it off. |
| 14 | VCC | power_in | Positive supply, recommended 1 V to 6 V (absolute maximum 7 V); a 0.1 µF bypass capacitor is recommended. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | PDIP-14 |
| Category | Interface |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | -0.5 |  | 7 | V |  | 4 |
| Control-input diode current | II | -20 |  | 20 | mA | VI < 0 or VI > VCC | 4 |
| I/O port diode current | II | -20 |  | 20 | mA | VI/O < 0 or VI/O > VCC | 4 |
| On-state switch current |  | -25 |  | 25 | mA | VI/O = 0 to VCC | 4 |
| Continuous current through VCC or GND |  | -50 |  | 50 | mA |  | 4 |
| Junction temperature | TJ |  |  | 150 | °C |  | 4 |
| Storage temperature | Tstg | -60 |  | 150 | °C |  | 4 |
| Electrostatic discharge, human-body model | V(ESD) | -1000 |  | 1000 | V | HBM, per ANSI/ESDA/JEDEC JS-001 | 4 |
| Electrostatic discharge, charged-device model | V(ESD) | -1000 |  | 1000 | V | CDM, per JEDEC JESD22-C101 | 4 |
| Supply voltage | VCC | 1 | 5 | 6 | V |  | 4 |
| I/O port voltage | VI/O | 0 |  |  | V |  | 4 |
| High-level input voltage, control inputs | VIH | 1.5 |  |  | V | VCC = 2V | 4 |
| High-level input voltage, control inputs | VIH | 3.15 |  |  | V | VCC = 4.5V | 4 |
| High-level input voltage, control inputs | VIH | 4.2 |  |  | V | VCC = 6V | 4 |
| Low-level input voltage, control inputs | VIL | 0 |  | 0.3 | V | VCC = 2V | 4 |
| Low-level input voltage, control inputs | VIL | 0 |  | 0.9 | V | VCC = 4.5V | 4 |
| Low-level input voltage, control inputs | VIL | 0 |  | 1.2 | V | VCC = 6V | 4 |
| Logic control input voltage | VI | 0 |  |  | V |  | 4 |
| Input transition rise and fall time | Δt/Δv |  |  | 1000 | ns | VCC = 2V | 4 |
| Input transition rise and fall time | Δt/Δv |  |  | 500 | ns | VCC = 4.5V | 4 |
| Input transition rise and fall time | Δt/Δv |  |  | 400 | ns | VCC = 6V | 4 |
| Operating free-air temperature | TA | -40 |  | 85 | °C |  | 4 |
| On-state switch resistance | ron |  | 50 | 85 | Ω | IT = -1mA, VI = 0 to VCC, VC = VIH, VCC = 4.5V, TA = 25°C | 5 |
| On-state switch resistance | ron |  |  | 106 | Ω | IT = -1mA, VI = 0 to VCC, VC = VIH, VCC = 4.5V, TA = -40 to +85 °C | 5 |
| Peak on-state resistance | ron(p) |  | 70 | 170 | Ω | VI = VCC or GND, VC = VIH, IT = -1mA, VCC = 4.5V, TA = 25°C | 5 |
| Peak on-state resistance | ron(p) |  |  | 215 | Ω | VI = VCC or GND, VC = VIH, IT = -1mA, VCC = 4.5V, TA = -40 to +85 °C | 5 |
| Control input current | IIH/IIL | -100 | 0.1 | 100 | nA | VC = 0 or VCC, VCC = 6V, TA = 25°C | 5 |
| Control input current | IIH/IIL | -1000 |  | 1000 | nA | VC = 0 or VCC, VCC = 6V, TA = -40 to +85 °C | 5 |
| Off-state switch leakage current | Isoff | -5 |  | 5 | µA | VI = VCC or 0, VO = VCC or 0, VC = VIL, VCC = 6V, TA = -40 to +85 °C | 5 |
| On-state switch leakage current | Ison | -5 |  | 5 | µA | VI = VCC or 0, VC = VIH, VCC = 6V, TA = -40 to +85 °C | 5 |
| Supply current | ICC |  |  | 20 | µA | VI = 0 or VCC, IO = 0, VCC = 6V, TA = -40 to +85 °C | 5 |
| Input capacitance, control input C | Ci |  | 3 | 10 | pF | VCC = 5V, TA = 25°C | 5 |
| Input capacitance, control input C | Ci |  |  | 10 | pF | VCC = 5V, TA = -40 to +85 °C | 5 |
| Propagation delay time, A or B to B or A | tPLH, tPHL |  | 10 | 60 | ns | CL = 50pF, VCC = 2V, TA = 25°C | 6 |
| Propagation delay time, A or B to B or A | tPLH, tPHL |  |  | 75 | ns | CL = 50pF, VCC = 2V, TA = -40 to +85 °C | 6 |
| Propagation delay time, A or B to B or A | tPLH, tPHL |  | 4 | 12 | ns | CL = 50pF, VCC = 4.5V, TA = 25°C | 6 |
| Propagation delay time, A or B to B or A | tPLH, tPHL |  |  | 15 | ns | CL = 50pF, VCC = 4.5V, TA = -40 to +85 °C | 6 |
| Propagation delay time, A or B to B or A | tPLH, tPHL |  | 3 | 10 | ns | CL = 50pF, VCC = 6V, TA = 25°C | 6 |
| Propagation delay time, A or B to B or A | tPLH, tPHL |  |  | 13 | ns | CL = 50pF, VCC = 6V, TA = -40 to +85 °C | 6 |
| Switch turn-on time, C to A or B | tPZH, tPZL |  | 70 | 180 | ns | RL = 1kΩ, CL = 50pF, VCC = 2V, TA = 25°C | 6 |
| Switch turn-on time, C to A or B | tPZH, tPZL |  |  | 225 | ns | RL = 1kΩ, CL = 50pF, VCC = 2V, TA = -40 to +85 °C | 6 |
| Switch turn-on time, C to A or B | tPZH, tPZL |  | 21 | 36 | ns | RL = 1kΩ, CL = 50pF, VCC = 4.5V, TA = 25°C | 6 |
| Switch turn-on time, C to A or B | tPZH, tPZL |  |  | 45 | ns | RL = 1kΩ, CL = 50pF, VCC = 4.5V, TA = -40 to +85 °C | 6 |
| Switch turn-on time, C to A or B | tPZH, tPZL |  | 18 | 31 | ns | RL = 1kΩ, CL = 50pF, VCC = 6V, TA = 25°C | 6 |
| Switch turn-on time, C to A or B | tPZH, tPZL |  |  | 38 | ns | RL = 1kΩ, CL = 50pF, VCC = 6V, TA = -40 to +85 °C | 6 |
| Switch turn-off time, C to A or B | tPLZ, tPHZ |  | 50 | 200 | ns | RL = 1kΩ, CL = 50pF, VCC = 2V, TA = 25°C | 6 |
| Switch turn-off time, C to A or B | tPLZ, tPHZ |  |  | 250 | ns | RL = 1kΩ, CL = 50pF, VCC = 2V, TA = -40 to +85 °C | 6 |
| Switch turn-off time, C to A or B | tPLZ, tPHZ |  | 25 | 40 | ns | RL = 1kΩ, CL = 50pF, VCC = 4.5V, TA = 25°C | 6 |
| Switch turn-off time, C to A or B | tPLZ, tPHZ |  |  | 50 | ns | RL = 1kΩ, CL = 50pF, VCC = 4.5V, TA = -40 to +85 °C | 6 |
| Switch turn-off time, C to A or B | tPLZ, tPHZ |  | 22 | 34 | ns | RL = 1kΩ, CL = 50pF, VCC = 6V, TA = 25°C | 6 |
| Switch turn-off time, C to A or B | tPLZ, tPHZ |  |  | 43 | ns | RL = 1kΩ, CL = 50pF, VCC = 6V, TA = -40 to +85 °C | 6 |
| On-state switch resistance | ron |  | 150 |  | Ω | IT = -1mA, VI = 0 to VCC, VC = VIH, VCC = 2V, TA = 25°C | 5 |
| On-state switch resistance | ron |  | 30 |  | Ω | IT = -1mA, VI = 0 to VCC, VC = VIH, VCC = 6V, TA = 25°C | 5 |
| Peak on-state resistance | ron(p) |  | 320 |  | Ω | VI = VCC or GND, VC = VIH, IT = -1mA, VCC = 2V, TA = 25°C | 5 |
| Peak on-state resistance | ron(p) |  | 50 |  | Ω | VI = VCC or GND, VC = VIH, IT = -1mA, VCC = 6V, TA = 25°C | 5 |
| Supply current | ICC |  | 2 |  | µA | VI = 0 or VCC, IO = 0, VCC = 6V, TA = 25°C | 5 |
| Off-state switch leakage current | Isoff |  | 0.1 |  | µA | VI = VCC or 0, VO = VCC or 0, VC = VIL, VCC = 6V, TA = 25°C | 5 |
| On-state switch leakage current | Ison |  | 0.1 |  | µA | VI = VCC or 0, VC = VIH, VCC = 6V, TA = 25°C | 5 |
| Input capacitance, A or B | Ci |  | 8 |  | pF | VCC = 5V, TA = 25°C | 5 |
| Output capacitance, A or B | Co |  | 9 |  | pF | VCC = 5V | 5 |

## CAD (KiCad official)

- Symbol: `SN74HC4066N`
- Footprint: `Package_DIP:DIP-14_W7.62mm`
- 3D model: PDIP-14 (KiCad packages3D, STEP)
- 3D model files: `sn74hc4066n-etched.step` / `sn74hc4066n-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74hc4066n.step` / `sn74hc4066n.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/sn74hc4066) (35 pp, sha256 `bb8d8a444940092f`, retrieved 2026-10-15, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/sn74hc4066n-datasheet.pdf)