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SN74LXC1T45DCKR

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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.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 (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