# 74ACT08SC

**onsemi** · Gates · SOIC-14

74ACT08SC from onsemi, in a SOIC-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 | A0 | input | Gate 0 input A; ACT thresholds are VIH min 2.0V and VIL max 0.8V. |
| 2 | B0 | input | Gate 0 input B; ACT thresholds are VIH min 2.0V and VIL max 0.8V. |
| 3 | O0 | output | Gate 0 output (A0 AND B0), sources/sinks 24mA. |
| 4 | A1 | input | Gate 1 input A; ACT thresholds are VIH min 2.0V and VIL max 0.8V. |
| 5 | B1 | input | Gate 1 input B; ACT thresholds are VIH min 2.0V and VIL max 0.8V. |
| 6 | O1 | output | Gate 1 output (A1 AND B1), sources/sinks 24mA. |
| 7 | GND | power_in | Ground pin. |
| 8 | O3 | output | Gate 3 output (A3 AND B3), sources/sinks 24mA. |
| 9 | B3 | input | Gate 3 input B; ACT thresholds are VIH min 2.0V and VIL max 0.8V. |
| 10 | A3 | input | Gate 3 input A; ACT thresholds are VIH min 2.0V and VIL max 0.8V. |
| 11 | O2 | output | Gate 2 output (A2 AND B2), sources/sinks 24mA. |
| 12 | B2 | input | Gate 2 input B; ACT thresholds are VIH min 2.0V and VIL max 0.8V. |
| 13 | A2 | input | Gate 2 input A; ACT thresholds are VIH min 2.0V and VIL max 0.8V. |
| 14 | VCC | power_in | Supply voltage, 4.5V to 5.5V recommended for ACT devices (absolute max 7.0V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOIC-14 |
| Category | Logic ICs |
| 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 | 4.5 |  | 5.5 | V | ACT | 2 |
| Input Voltage | VI | 0 |  |  | V | 0V to VCC | 2 |
| Output Voltage | VO | 0 |  |  | V | 0V to VCC | 2 |
| Operating Temperature | TA | -40 |  | 85 | °C |  | 2 |
| Minimum Input Edge Rate, ACT | ΔV/Δt | 125 |  |  | mV/ns | VIN from 0.8V to 2.0V, VCC @ 4.5V, 5.5V | 2 |
| Supply Voltage | VCC | -0.5 |  | 7 | V |  | 2 |
| DC Input Diode Current | IIK | -20 |  | 20 | mA | VI = -0.5V: -20mA; VI = VCC + 0.5: +20mA | 2 |
| DC Input Voltage | VI | -0.5 |  | 5.5 | V | -0.5V to VCC + 0.5V | 2 |
| DC Output Diode Current | IOK | -20 |  | 20 | mA | VO = -0.5V: -20mA; VO = VCC + 0.5V: +20mA | 2 |
| DC Output Voltage | VO | -0.5 |  | 5.5 | V | -0.5V to VCC + 0.5V | 2 |
| DC Output Source or Sink Current | IO | -50 |  | 50 | mA |  | 2 |
| DC VCC or Ground Current per Output Pin | ICC or IGND | -50 |  | 50 | mA |  | 2 |
| Storage Temperature | TSTG | -65 |  | 150 | °C |  | 2 |
| Junction Temperature | TJ |  |  | 140 | °C |  | 2 |
| Minimum HIGH Level Input Voltage | VIH | 2 | 1.5 |  | V | VCC=4.5V, VOUT = 0.1V or VCC, 0.1V, TA=-40°C to +85°C | 4 |
| Maximum LOW Level Input Voltage | VIL |  | 1.5 | 0.8 | V | VCC=4.5V, VOUT = 0.1V or VCC, 0.1V, TA=-40°C to +85°C | 4 |
| Minimum HIGH Level Output Voltage | VOH | 4.4 | 4.49 |  | V | VCC=4.5V, IOUT = -50µA, TA=-40°C to +85°C | 4 |
| Minimum HIGH Level Output Voltage | VOH | 5.4 | 5.49 |  | V | VCC=5.5V, IOUT = -50µA, TA=-40°C to +85°C | 4 |
| Minimum HIGH Level Output Voltage | VOH | 3.76 | 3.86 |  | V | VCC=4.5V, VIN = VIL or VIH, IOH = -24mA, TA=-40°C to +85°C | 4 |
| Minimum HIGH Level Output Voltage | VOH | 4.76 | 4.86 |  | V | VCC=5.5V, VIN = VIL or VIH, IOH = -24mA, TA=-40°C to +85°C | 4 |
| Maximum LOW Level Output Voltage | VOL |  | 0.001 | 0.1 | V | VCC=4.5V, IOUT = 50µA, TA=-40°C to +85°C | 4 |
| Maximum LOW Level Output Voltage | VOL |  | 0.36 | 0.44 | V | VCC=4.5V, VIN = VIL or VIH, IOL = 24mA, TA=-40°C to +85°C | 4 |
| Maximum Input Leakage Current | IIN | -1 |  | 1 | µA | VCC=5.5V, VI = VCC, GND, TA=-40°C to +85°C | 4 |
| Maximum ICC/Input | ICCT |  | 0.6 | 1.5 | mA | VCC=5.5V, VI = VCC, 2.1V, TA=-40°C to +85°C | 4 |
| Minimum Dynamic Output Current | IOLD | 75 |  |  | mA | VCC=5.5V, VOLD = 1.65V Max. | 4 |
| Minimum Dynamic Output Current | IOHD |  |  | -75 | mA | VCC=5.5V, VOHD = 3.85V Min. | 4 |
| Maximum Quiescent Supply Current | ICC |  | 4 | 40 | µA | VCC=5.5V, VIN = VCC or GND, TA=-40°C to +85°C | 4 |
| Propagation Delay | tPLH | 1 | 6.5 | 10 | ns | VCC=5.0V, CL = 50pF, TA=-40°C to +85°C | 5 |
| Input Capacitance | CIN |  | 4.5 |  | pF | VCC = OPEN | 5 |
| Power Dissipation Capacitance | CPD |  | 20 |  | pF | VCC = 5.0V | 5 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | PC |  | 74AC08PC N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide | 1 |

## CAD (KiCad official)

- Symbol: `74ACT08SC`
- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`
- 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files: `74act08sc-etched.step` / `74act08sc-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74act08sc.step` / `74act08sc.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/74act08sc-d.pdf) (6 pp, sha256 `8f778a967796d959`, retrieved 2026-10-27, 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/74act08sc-datasheet.pdf)