component
SN74LXC1T45DCKR
Public Made by Adomby adom
TI(德州仪器) Translators, Level Shifters, SC-70-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SN74LXC1T45DCKR
TI(德州仪器) · Translators, Level Shifters · SC-70-6
SN74LXC1T45DCKR from TI(德州仪器), in a SC-70-6. 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 | VCCA | power_in | A port supply voltage, specified at 1.1V ≤ VCCA ≤ 5.5V. |
| 2 | GND | power_in | Ground reference for the device. |
| 3 | A | bidirectional | Input or output A, referenced to VCCA; accepts I/O voltages from 1.1V to 5.5V. |
| 4 | B | bidirectional | Input or output B, referenced to VCCB; accepts I/O voltages from 1.1V to 5.5V. |
| 5 | DIR | input | Direction control for all ports, referenced to VCCA; high enables A-to-B transfer and low enables B-to-A transfer. |
| 6 | VCCB | power_in | B port supply voltage, specified at 1.1V ≤ VCCB ≤ 5.5V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TI(德州仪器) |
| Package | SC-70-6 |
| Category | Logic |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VCCA supply voltage (A port) | VCCA | 1.1 | 5.5 | V | 5 | ||
| VCCB supply voltage (B port) | VCCB | 1.1 | 5.5 | V | 5 | ||
| High-level output current | IOH | -0.1 | mA | VCCO = 1.1V | 5 | ||
| High-level output current | IOH | -4 | mA | VCCO = 1.4V | 5 | ||
| High-level output current | IOH | -8 | mA | VCCO = 1.65V | 5 | ||
| High-level output current | IOH | -12 | mA | VCCO = 2.3V | 5 | ||
| High-level output current | IOH | -24 | mA | VCCO = 3V | 5 | ||
| High-level output current | IOH | -32 | mA | VCCO = 4.5V | 5 | ||
| Low-level output current | IOL | 0.1 | mA | VCCO = 1.1V | 5 | ||
| Low-level output current | IOL | 4 | mA | VCCO = 1.4V | 5 | ||
| Low-level output current | IOL | 8 | mA | VCCO = 1.65V | 5 | ||
| Low-level output current | IOL | 12 | mA | VCCO = 2.3V | 5 | ||
| Low-level output current | IOL | 24 | mA | VCCO = 3V | 5 | ||
| Low-level output current | IOL | 32 | mA | VCCO = 4.5V | 5 | ||
| Input voltage | VI | 0 | 5.5 | V | 5 | ||
| Output voltage, active state | VO | 0 | V | Active state; upper limit printed as VCCO | 5 | ||
| Output voltage, three-state | VO | 0 | 5.5 | V | Three-state | 5 | |
| Operating free-air temperature (natural ventilation) | TA | -40 | 125 | °C | Natural ventilation | 5 | |
| High-level output voltage | VOH | 1 | V | IOH = -4mA; VCCA = VCCB = 1.4V; -40°C to 125°C column | 7 | ||
| High-level output voltage | VOH | 1.2 | V | IOH = -8mA; VCCA = VCCB = 1.65V; -40°C to 125°C column | 7 | ||
| High-level output voltage | VOH | 1.9 | V | IOH = -12mA; VCCA = VCCB = 2.3V; -40°C to 125°C column | 7 | ||
| High-level output voltage | VOH | 2.4 | V | IOH = -24mA; VCCA = VCCB = 3V; -40°C to 125°C column | 7 | ||
| High-level output voltage | VOH | 3.8 | V | IOH = -32mA; VCCA = VCCB = 4.5V; -40°C to 125°C column | 7 | ||
| Low-level output voltage | VOL | 0.1 | V | IOL = 100µA; VCCA, VCCB 1.1V to 5.5V; -40°C to 125°C column | 7 | ||
| Low-level output voltage | VOL | 0.3 | V | IOL = 4mA; VCCA = VCCB = 1.4V; -40°C to 125°C column | 7 | ||
| Low-level output voltage | VOL | 0.45 | V | IOL = 8mA; VCCA = VCCB = 1.65V; -40°C to 125°C column | 7 | ||
| Low-level output voltage | VOL | 0.55 | V | IOL = 24mA; VCCA = VCCB = 3V; -40°C to 125°C column | 7 | ||
| Input leakage current, control input (DIR) | II | -0.1 | 2 | µA | VI = VCCA or GND; VCCA, VCCB 1.1V to 5.5V; -40°C to 125°C column | 7 | |
| Input leakage current, data inputs (Ax, Bx) | II | -2 | 2 | µA | VI = VCCI or GND; VCCA, VCCB 1.1V to 5.5V; -40°C to 125°C column | 7 | |
| Partial power-down current, A or B port | Ioff | -2.5 | 2.5 | µA | VI or VO = 0V to 5.5V; VCCA = 0V, VCCB = 0V to 5.5V; -40°C to 125°C column | 7 | |
| Floating-supply partial power-down current, A or B port | Ioff-float | -2.5 | 2.5 | µA | VI or VO = GND; VCCA floating, VCCB = 0V to 5.5V; -40°C to 125°C column | 7 | |
| VCCA supply current | ICCA | 4 | µA | VI = VCCI or GND; IO = 0; VCCA, VCCB 1.1V to 5.5V; -40°C to 125°C column | 8 | ||
| VCCA supply current | ICCA | -1 | µA | VI = VCCI or GND; IO = 0; VCCA = 0V, VCCB = 5.5V; -40°C to 125°C column | 8 | ||
| VCCA supply current | ICCA | 2 | µA | VI = VCCI or GND; IO = 0; VCCA = 5.5V, VCCB = 0V; -40°C to 125°C column | 8 | ||
| VCCB supply current | ICCB | 4 | µA | VI = VCCI or GND; IO = 0; VCCA, VCCB 1.1V to 5.5V; -40°C to 125°C column | 8 | ||
| VCCB supply current | ICCB | 2 | µA | VI = VCCI or GND; IO = 0; VCCA = 0V, VCCB = 5.5V; -40°C to 125°C column | 8 | ||
| VCCB supply current | ICCB | -1 | µA | VI = VCCI or GND; IO = 0; VCCA = 5.5V, VCCB = 0V; -40°C to 125°C column | 8 | ||
| Combined supply current (ICCA + ICCB) | ICCA + ICCB | 6 | µA | VI = VCCI or GND; IO = 0; VCCA, VCCB 1.1V to 5.5V; -40°C to 125°C column | 8 | ||
| Additional VCCA supply current per input, control input (DIR) | ΔICCA | 75 | µA | DIR: VI = VCCA, 0.6V; A port = VCCA or GND; B port open; VCCA 3.0V to 5.5V | 8 | ||
| Additional VCCA supply current per input, A port | ΔICCA | 75 | µA | A port: VI = VCCA, 0.6V; DIR = VCCA; B port open; VCCA 3.0V to 5.5V | 8 | ||
| Additional VCCB supply current per input, B port | ΔICCB | 75 | µA | B port: VI = VCCB, 0.6V; DIR = GND; A port open; VCCB 3.0V to 5.5V | 8 | ||
| Control input capacitance | Ci | 5 | pF | VI = 3.3V or GND; VCCA = VCCB = 3.3V | 8 | ||
| Data I/O capacitance | Cio | 10.5 | pF | VCCO = 0V; VO = 1.65V DC + 1MHz, -16dBm sine wave; VCCA = VCCB = 3.3V | 8 | ||
| Input threshold, positive-going (data inputs Ax, Bx) | VT+ | 0.44 | 0.88 | V | VCCA = VCCB = 1.1V; referenced to VCCI; -40°C to 125°C column | 6 | |
| Input threshold, positive-going (data inputs Ax, Bx) | VT+ | 2.65 | 3.33 | V | VCCA = VCCB = 5.5V; referenced to VCCI; -40°C to 125°C column | 6 | |
| Input threshold, negative-going (data inputs Ax, Bx) | VT- | 0.17 | 0.48 | V | VCCA = VCCB = 1.1V; referenced to VCCI; -40°C to 125°C column | 6 | |
| Input threshold, negative-going (data inputs Ax, Bx) | VT- | 1.88 | 2.4 | V | VCCA = VCCB = 5.5V; referenced to VCCI; -40°C to 125°C column | 6 | |
| Input threshold hysteresis (data inputs Ax, Bx) | ΔVT | 0.2 | 0.4 | V | VCCA = VCCB = 1.1V; referenced to VCCI; -40°C to 125°C column | 7 | |
| Input threshold hysteresis (data inputs Ax, Bx) | ΔVT | 0.69 | 1.06 | V | VCCA = VCCB = 5.5V; referenced to VCCI; -40°C to 125°C column | 7 | |
| Junction-to-ambient thermal resistance | RθJA | 216.1 | °C/W | DCK (SC70) 6-pin package | 5 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 143.6 | °C/W | DCK (SC70) 6-pin package | 5 | ||
| Junction-to-board thermal resistance | RθJB | 75.9 | °C/W | DCK (SC70) 6-pin package | 5 | ||
| Junction-to-top characterization parameter | YJT | 58.5 | °C/W | DCK (SC70) 6-pin package | 5 | ||
| Junction-to-board characterization parameter | YJB | 75.6 | °C/W | DCK (SC70) 6-pin package | 5 |
CAD (KiCad official)
- Symbol:
SN74LXC1T45DCKR - Footprint:
Package_TO_SOT_SMD:SOT-363_SC-70-6 - 3D model: SC-70-6 (KiCad packages3D, STEP)
- 3D model files:
sn74lxc1t45dckr-etched.step/sn74lxc1t45dckr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74lxc1t45dckr.step/sn74lxc1t45dckr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TI(德州仪器) datasheet (41 pp, sha256
4f3217682a5fa078, retrieved 2026-10-17, 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, primaryclaude-haiku-5-5(text), consensusclaude-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).
# SN74LXC1T45DCKR
**TI(德州仪器)** · Translators, Level Shifters · SC-70-6
SN74LXC1T45DCKR from TI(德州仪器), in a SC-70-6. 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 | VCCA | power_in | A port supply voltage, specified at 1.1V ≤ VCCA ≤ 5.5V. |
| 2 | GND | power_in | Ground reference for the device. |
| 3 | A | bidirectional | Input or output A, referenced to VCCA; accepts I/O voltages from 1.1V to 5.5V. |
| 4 | B | bidirectional | Input or output B, referenced to VCCB; accepts I/O voltages from 1.1V to 5.5V. |
| 5 | DIR | input | Direction control for all ports, referenced to VCCA; high enables A-to-B transfer and low enables B-to-A transfer. |
| 6 | VCCB | power_in | B port supply voltage, specified at 1.1V ≤ VCCB ≤ 5.5V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TI(德州仪器) |
| Package | SC-70-6 |
| Category | Logic |
| Pins | 6 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VCCA supply voltage (A port) | VCCA | 1.1 | | 5.5 | V | | 5 |
| VCCB supply voltage (B port) | VCCB | 1.1 | | 5.5 | V | | 5 |
| High-level output current | IOH | -0.1 | | | mA | VCCO = 1.1V | 5 |
| High-level output current | IOH | -4 | | | mA | VCCO = 1.4V | 5 |
| High-level output current | IOH | -8 | | | mA | VCCO = 1.65V | 5 |
| High-level output current | IOH | -12 | | | mA | VCCO = 2.3V | 5 |
| High-level output current | IOH | -24 | | | mA | VCCO = 3V | 5 |
| High-level output current | IOH | -32 | | | mA | VCCO = 4.5V | 5 |
| Low-level output current | IOL | | | 0.1 | mA | VCCO = 1.1V | 5 |
| Low-level output current | IOL | | | 4 | mA | VCCO = 1.4V | 5 |
| Low-level output current | IOL | | | 8 | mA | VCCO = 1.65V | 5 |
| Low-level output current | IOL | | | 12 | mA | VCCO = 2.3V | 5 |
| Low-level output current | IOL | | | 24 | mA | VCCO = 3V | 5 |
| Low-level output current | IOL | | | 32 | mA | VCCO = 4.5V | 5 |
| Input voltage | VI | 0 | | 5.5 | V | | 5 |
| Output voltage, active state | VO | 0 | | | V | Active state; upper limit printed as VCCO | 5 |
| Output voltage, three-state | VO | 0 | | 5.5 | V | Three-state | 5 |
| Operating free-air temperature (natural ventilation) | TA | -40 | | 125 | °C | Natural ventilation | 5 |
| High-level output voltage | VOH | 1 | | | V | IOH = -4mA; VCCA = VCCB = 1.4V; -40°C to 125°C column | 7 |
| High-level output voltage | VOH | 1.2 | | | V | IOH = -8mA; VCCA = VCCB = 1.65V; -40°C to 125°C column | 7 |
| High-level output voltage | VOH | 1.9 | | | V | IOH = -12mA; VCCA = VCCB = 2.3V; -40°C to 125°C column | 7 |
| High-level output voltage | VOH | 2.4 | | | V | IOH = -24mA; VCCA = VCCB = 3V; -40°C to 125°C column | 7 |
| High-level output voltage | VOH | 3.8 | | | V | IOH = -32mA; VCCA = VCCB = 4.5V; -40°C to 125°C column | 7 |
| Low-level output voltage | VOL | | | 0.1 | V | IOL = 100µA; VCCA, VCCB 1.1V to 5.5V; -40°C to 125°C column | 7 |
| Low-level output voltage | VOL | | | 0.3 | V | IOL = 4mA; VCCA = VCCB = 1.4V; -40°C to 125°C column | 7 |
| Low-level output voltage | VOL | | | 0.45 | V | IOL = 8mA; VCCA = VCCB = 1.65V; -40°C to 125°C column | 7 |
| Low-level output voltage | VOL | | | 0.55 | V | IOL = 24mA; VCCA = VCCB = 3V; -40°C to 125°C column | 7 |
| Input leakage current, control input (DIR) | II | -0.1 | | 2 | µA | VI = VCCA or GND; VCCA, VCCB 1.1V to 5.5V; -40°C to 125°C column | 7 |
| Input leakage current, data inputs (Ax, Bx) | II | -2 | | 2 | µA | VI = VCCI or GND; VCCA, VCCB 1.1V to 5.5V; -40°C to 125°C column | 7 |
| Partial power-down current, A or B port | Ioff | -2.5 | | 2.5 | µA | VI or VO = 0V to 5.5V; VCCA = 0V, VCCB = 0V to 5.5V; -40°C to 125°C column | 7 |
| Floating-supply partial power-down current, A or B port | Ioff-float | -2.5 | | 2.5 | µA | VI or VO = GND; VCCA floating, VCCB = 0V to 5.5V; -40°C to 125°C column | 7 |
| VCCA supply current | ICCA | | | 4 | µA | VI = VCCI or GND; IO = 0; VCCA, VCCB 1.1V to 5.5V; -40°C to 125°C column | 8 |
| VCCA supply current | ICCA | | | -1 | µA | VI = VCCI or GND; IO = 0; VCCA = 0V, VCCB = 5.5V; -40°C to 125°C column | 8 |
| VCCA supply current | ICCA | | | 2 | µA | VI = VCCI or GND; IO = 0; VCCA = 5.5V, VCCB = 0V; -40°C to 125°C column | 8 |
| VCCB supply current | ICCB | | | 4 | µA | VI = VCCI or GND; IO = 0; VCCA, VCCB 1.1V to 5.5V; -40°C to 125°C column | 8 |
| VCCB supply current | ICCB | | | 2 | µA | VI = VCCI or GND; IO = 0; VCCA = 0V, VCCB = 5.5V; -40°C to 125°C column | 8 |
| VCCB supply current | ICCB | | | -1 | µA | VI = VCCI or GND; IO = 0; VCCA = 5.5V, VCCB = 0V; -40°C to 125°C column | 8 |
| Combined supply current (ICCA + ICCB) | ICCA + ICCB | | | 6 | µA | VI = VCCI or GND; IO = 0; VCCA, VCCB 1.1V to 5.5V; -40°C to 125°C column | 8 |
| Additional VCCA supply current per input, control input (DIR) | ΔICCA | | | 75 | µA | DIR: VI = VCCA, 0.6V; A port = VCCA or GND; B port open; VCCA 3.0V to 5.5V | 8 |
| Additional VCCA supply current per input, A port | ΔICCA | | | 75 | µA | A port: VI = VCCA, 0.6V; DIR = VCCA; B port open; VCCA 3.0V to 5.5V | 8 |
| Additional VCCB supply current per input, B port | ΔICCB | | | 75 | µA | B port: VI = VCCB, 0.6V; DIR = GND; A port open; VCCB 3.0V to 5.5V | 8 |
| Control input capacitance | Ci | | | 5 | pF | VI = 3.3V or GND; VCCA = VCCB = 3.3V | 8 |
| Data I/O capacitance | Cio | | | 10.5 | pF | VCCO = 0V; VO = 1.65V DC + 1MHz, -16dBm sine wave; VCCA = VCCB = 3.3V | 8 |
| Input threshold, positive-going (data inputs Ax, Bx) | VT+ | 0.44 | | 0.88 | V | VCCA = VCCB = 1.1V; referenced to VCCI; -40°C to 125°C column | 6 |
| Input threshold, positive-going (data inputs Ax, Bx) | VT+ | 2.65 | | 3.33 | V | VCCA = VCCB = 5.5V; referenced to VCCI; -40°C to 125°C column | 6 |
| Input threshold, negative-going (data inputs Ax, Bx) | VT- | 0.17 | | 0.48 | V | VCCA = VCCB = 1.1V; referenced to VCCI; -40°C to 125°C column | 6 |
| Input threshold, negative-going (data inputs Ax, Bx) | VT- | 1.88 | | 2.4 | V | VCCA = VCCB = 5.5V; referenced to VCCI; -40°C to 125°C column | 6 |
| Input threshold hysteresis (data inputs Ax, Bx) | ΔVT | 0.2 | | 0.4 | V | VCCA = VCCB = 1.1V; referenced to VCCI; -40°C to 125°C column | 7 |
| Input threshold hysteresis (data inputs Ax, Bx) | ΔVT | 0.69 | | 1.06 | V | VCCA = VCCB = 5.5V; referenced to VCCI; -40°C to 125°C column | 7 |
| Junction-to-ambient thermal resistance | RθJA | | 216.1 | | °C/W | DCK (SC70) 6-pin package | 5 |
| Junction-to-case (top) thermal resistance | RθJC(top) | | 143.6 | | °C/W | DCK (SC70) 6-pin package | 5 |
| Junction-to-board thermal resistance | RθJB | | 75.9 | | °C/W | DCK (SC70) 6-pin package | 5 |
| Junction-to-top characterization parameter | YJT | | 58.5 | | °C/W | DCK (SC70) 6-pin package | 5 |
| Junction-to-board characterization parameter | YJB | | 75.6 | | °C/W | DCK (SC70) 6-pin package | 5 |
## CAD (KiCad official)
- Symbol: `SN74LXC1T45DCKR`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SC-70-6 (KiCad packages3D, STEP)
- 3D model files: `sn74lxc1t45dckr-etched.step` / `sn74lxc1t45dckr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74lxc1t45dckr.step` / `sn74lxc1t45dckr.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [TI(德州仪器) datasheet](https://www.ti.com/cn/lit/gpn/sn74lxc1t45) (41 pp, sha256 `4f3217682a5fa078`, retrieved 2026-10-17, 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/sn74lxc1t45dckr-datasheet.pdf)