# SN74LVC1G139DCUT

**Texas Instruments** · Signal Switches, Multiplexers, Decoders · VSSOP-8

SN74LVC1G139DCUT from Texas Instruments, in a VSSOP-8. 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 | Address input, bit 0 (least significant bit) of the 2-bit select code that chooses which active-low output goes low. |
| 2 | B | input | Address input, bit 1 (most significant bit) of the 2-bit select code that chooses which active-low output goes low. |
| 3 | Y3 | output | Output 3, active low; goes low when B is high and A is high. |
| 4 | GND | power_in | Ground pin. |
| 5 | Y2 | output | Output 2, active low; goes low when B is high and A is low. |
| 6 | Y1 | output | Output 1, active low; goes low when B is low and A is high. |
| 7 | Y0 | output | Output 0, active low; goes low when B is low and A is low. |
| 8 | VCC | power_in | Supply pin; operating range is 1.65 V to 5.5 V per the Recommended Operating Conditions. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8 |
| Category | Logic |
| Pins | 8 |

## 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 output voltage | VOH | 1.2 |  |  | V | IOH = -4 mA, VCC = 1.65 V | 6 |
| High-level output voltage | VOH | 1.9 |  |  | V | IOH = -8 mA, VCC = 2.3 V | 6 |
| High-level output voltage | VOH | 2.4 |  |  | V | IOH = -16 mA, VCC = 3 V | 6 |
| High-level output voltage | VOH | 2.3 |  |  | V | IOH = -24 mA, VCC = 3 V | 6 |
| High-level output voltage | VOH | 3.8 |  |  | V | IOH = -32 mA, VCC = 4.5 V | 6 |
| Low-level output voltage | VOL |  |  | 0.1 | V | IOL = 100 µA, VCC = 1.65 V to 5.5 V | 6 |
| Low-level output voltage | VOL |  |  | 0.45 | V | IOL = 4 mA, VCC = 1.65 V | 6 |
| Low-level output voltage | VOL |  |  | 0.3 | V | IOL = 8 mA, VCC = 2.3 V | 6 |
| Low-level output voltage | VOL |  |  | 0.4 | V | IOL = 16 mA, VCC = 3 V | 6 |
| Low-level output voltage | VOL |  |  | 0.55 | V | IOL = 24 mA, VCC = 3 V | 6 |
| Inflection-point current | II | -1 |  | 1 | µA | A or B inputs: VI = 5.5 V or GND, VCC = 0 to 5.5 V | 6 |
| Off-state current | Ioff | -5 |  | 5 | µA | VI or VO = 5.5 V, VCC = 0 | 6 |
| Supply current | ICC |  |  | 10 | µA | VI = 5.5 V or GND, IO = 0, VCC = 1.65 V to 5.5 V | 6 |
| Supply current change | ΔICC |  |  | 500 | µA | One input at VCC, 0.6 V, other inputs at VCC or GND, VCC = 3 V to 5.5 V | 6 |
| Supply voltage, operating | VCC | 1.65 |  | 5.5 | V | Operating | 5 |
| Supply voltage, data retention only | VCC | 1.5 |  |  | V | Data retention only | 5 |
| High-level input voltage | VIH | 1.7 |  |  | V | VCC = 2.3 V to 2.7 V | 5 |
| High-level input voltage | VIH | 2 |  |  | V | VCC = 3 V to 3.6 V | 5 |
| Low-level input voltage | VIL |  |  | 0.7 | V | VCC = 2.3 V to 2.7 V | 5 |
| Low-level input voltage | VIL |  |  | 0.8 | V | VCC = 3 V to 3.6 V | 5 |
| Input voltage | VI | 0 |  | 5.5 | V |  | 5 |
| Output voltage (maximum is VCC) | VO | 0 |  |  | V |  | 5 |
| High-level output current | IOH | -4 |  |  | mA | VCC = 1.65 V | 5 |
| High-level output current | IOH | -8 |  |  | mA | VCC = 2.3 V | 5 |
| High-level output current | IOH | -16 |  |  | mA | VCC = 3 V | 5 |
| High-level output current | IOH | -24 |  |  | mA | VCC = 3 V | 5 |
| High-level output current | IOH | -32 |  |  | mA | VCC = 4.5 V | 5 |
| Low-level output current | IOL |  |  | 4 | mA | VCC = 1.65 V | 5 |
| Low-level output current | IOL |  |  | 8 | mA | VCC = 2.3 V | 5 |
| Low-level output current | IOL |  |  | 16 | mA | VCC = 3 V | 5 |
| Low-level output current | IOL |  |  | 24 | mA | VCC = 3 V | 5 |
| Low-level output current | IOL |  |  | 32 | mA | VCC = 4.5 V | 5 |
| Input transition rise or fall rate | Δt/Δv |  |  | 20 | ns/V | VCC = 1.8 V ± 0.15 V, 2.5 V ± 0.2 V | 5 |
| Input transition rise or fall rate | Δt/Δv |  |  | 15 | ns/V | VCC = 3.3 V ± 0.3 V | 5 |
| Input transition rise or fall rate | Δt/Δv |  |  | 10 | ns/V | VCC = 5 V ± 0.5 V | 5 |
| Operating free-air temperature | TA | -40 |  | 85 | °C |  | 5 |
| Supply voltage | VCC | -0.5 |  | 6.5 | V |  | 4 |
| Input voltage | VI | -0.5 |  | 6.5 | V |  | 4 |
| Voltage applied to any output in the high-impedance or power-off state | VO | -0.5 |  | 6.5 | V |  | 4 |
| Input clamp current | IIK | -50 |  |  | mA | VI < 0 | 4 |
| Output clamp current | IOK | -50 |  |  | mA | VO < 0 | 4 |
| Continuous output current | IO | -50 |  | 50 | mA |  | 4 |
| Continuous current through VCC or GND | ICC | -100 |  | 100 | mA |  | 4 |
| Junction temperature | TJ |  |  | 150 | °C |  | 4 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 4 |
| Propagation delay time A or B-to-Y | tpd | 2.7 |  | 15.3 | ns | CL = 15 pF; VCC = 1.8 V ± 0.15 V; See 表 2 | 6 |
| Propagation delay time A or B-to-Y | tpd | 1.5 |  | 7.5 | ns | CL = 15 pF; VCC = 2.5 V ± 0.2 V; See 表 2 | 6 |
| Propagation delay time A or B-to-Y | tpd | 0.9 |  | 4.9 | ns | CL = 15 pF; VCC = 3.3 V ± 0.3 V; See 表 2 | 6 |
| Propagation delay time A or B-to-Y | tpd | 0.8 |  | 3.6 | ns | CL = 15 pF; VCC = 5 V ± 0.5 V; See 表 2 | 6 |
| Propagation delay time A or B-to-Y | tpd | 3 |  | 16.7 | ns | VCC = 1.8 V ± 0.15 V; See 表 3 | 6 |
| Propagation delay time A or B-to-Y | tpd | 1.6 |  | 8.2 | ns | VCC = 2.5 V ± 0.2 V; See 表 3 | 6 |
| Propagation delay time A or B-to-Y | tpd | 1.2 |  | 5.9 | ns | VCC = 3.3 V ± 0.3 V; See 表 3 | 6 |
| Propagation delay time A or B-to-Y | tpd | 1.1 |  | 4.2 | ns | VCC = 5 V ± 0.5 V; See 表 3 | 6 |
| Junction-to-ambient thermal resistance (DCU VSSOP) | RθJA |  | 195 |  | °C/W |  | 5 |
| Junction-to-case (top) thermal resistance (DCU VSSOP) | RθJC(top) |  | 74 |  | °C/W |  | 5 |
| Junction-to-board thermal resistance (DCU VSSOP) | RθJB |  | 74 |  | °C/W |  | 5 |
| Junction-to-top characterization parameter (DCU VSSOP) | ψJT |  | 6.7 |  | °C/W |  | 5 |
| Junction-to-board characterization parameter (DCU VSSOP) | ψJB |  | 73 |  | °C/W |  | 5 |

## CAD (KiCad official)

- Symbol: `SN74LVC1G139DCUT`
- Footprint: `Package_SO:VSSOP-8_2.3x2mm_P0.5mm`
- 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files: `sn74lvc1g139dcut-etched.step` / `sn74lvc1g139dcut-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lvc1g139dcut.step` / `sn74lvc1g139dcut.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/sn74lvc1g139) (27 pp, sha256 `9af92f6501b7e275`, retrieved 2026-10-19, 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-haiku-5-5` (text), consensus `claude-sonnet-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/sn74lvc1g139dcut-datasheet.pdf)