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SN74LXCH1T45DCKR

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Texas Instruments Translators, Level Shifters, SC-70-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SN74LXCH1T45DCKR

Texas Instruments · Translators, Level Shifters · SC-70-6

SN74LXCH1T45DCKR from Texas Instruments, 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 as 1.1 V ≤ VCCA ≤ 5.5 V.
2 GND power_in Ground reference for the device.
3 A bidirectional Input or output A, referenced to VCCA.
4 B bidirectional Input or output B, referenced to VCCB.
5 DIR input Direction-control signal for all ports, referenced to VCCA.
6 VCCB power_in B-port supply voltage, specified as 1.1 V ≤ VCCB ≤ 5.5 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
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 VCCA 1.1 5.5 V 5
VCCB supply voltage B VCCB 1.1 5.5 V 5
High-level input voltage, data inputs (A,B), referenced to VCCI VIH 1.7 V VCCI = 2.3 V - 2.7 V 5
High-level input voltage, data inputs (A,B), referenced to VCCI VIH 2 V VCCI = 3.0 V - 3.6 V 5
Low-level input voltage, data inputs (A,B), referenced to VCCI VIL 0.7 V VCCI = 2.3 V - 2.7 V 5
Low-level input voltage, data inputs (A,B), referenced to VCCI VIL 0.8 V VCCI = 3.0 V - 3.6 V 5
High-level output current IOH -0.1 mA VCCO = 1.1 V 5
High-level output current IOH -4 mA VCCO = 1.4 V 5
High-level output current IOH -8 mA VCCO = 1.65 V 5
High-level output current IOH -12 mA VCCO = 2.3 V 5
High-level output current IOH -24 mA VCCO = 3 V 5
High-level output current IOH -32 mA VCCO = 4.5 V 5
Low-level output current IOL 0.1 mA VCCO = 1.1 V 5
Low-level output current IOL 4 mA VCCO = 1.4 V 5
Low-level output current IOL 8 mA VCCO = 1.65 V 5
Low-level output current IOL 12 mA VCCO = 2.3 V 5
Low-level output current IOL 24 mA VCCO = 3 V 5
Low-level output current IOL 32 mA VCCO = 4.5 V 5
Input voltage VI 0 5.5 V 5
Output voltage, active state VO 0 V Active state; maximum printed as VCCO 5
Output voltage, tri-state VO 0 5.5 V Tri-state 5
Operating free-air temperature TA -40 125 °C 5
VCCA supply voltage A (absolute maximum) VCCA -0.5 6.5 V 4
VCCB supply voltage B (absolute maximum) VCCB -0.5 6.5 V 4
Input voltage, I/O ports (A port) VI -0.5 6.5 V I/O ports, A port 4
Input voltage, I/O ports (B port) VI -0.5 6.5 V I/O ports, B port 4
Input voltage, control inputs VI -0.5 6.5 V Control inputs 4
Voltage applied to any output in high-impedance or power-off state, A port VO -0.5 6.5 V A port 4
Voltage applied to any output in high-impedance or power-off state, B port VO -0.5 6.5 V B port 4
Voltage applied to any output in high or low state, A port VO -0.5 V A port; maximum printed as VCCA + 0.5 V 4
Voltage applied to any output in high or low state, B port VO -0.5 V B port; maximum printed as VCCB + 0.5 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 -200 200 mA 4
Junction temperature Tj 150 °C 4
Storage temperature Tstg -65 150 °C 4
Input leakage current, control input (DIR) II -0.1 2 µA TA = -40°C to 125°C; VI = VCCA or GND; VCCA and VCCB = 1.1 V - 5.5 V 6
Input leakage current, data inputs (Ax, Bx) II -2 2 µA TA = -40°C to 125°C; VI = VCCI or GND; VCCA and VCCB = 1.1 V - 5.5 V 6
Partial power down current, A or B port Ioff -2.5 2.5 µA TA = -40°C to 125°C; VI or VO = 0 V - 5.5 V; VCCA = 0 V, VCCB = 0 V - 5.5 V 7
Floating supply partial power down current, A or B port Ioff-float -2.5 2.5 µA TA = -40°C to 125°C; VI or VO = GND; VCCA floating, VCCB = 0 V - 5.5 V 7
Junction-to-ambient thermal resistance RθJA 205.2 °C/W DCK (SC70) 6-pin package 5
Junction-to-case (top) thermal resistance RθJC(top) 132.4 °C/W DCK (SC70) 6-pin package 5
Junction-to-board thermal resistance RθJB 65.1 °C/W DCK (SC70) 6-pin package 5
Junction-to-top characterization parameter YJT 48 °C/W DCK (SC70) 6-pin package 5
Junction-to-board characterization parameter YJB 64.9 °C/W DCK (SC70) 6-pin package 5

CAD (KiCad official)

  • Symbol: SN74LXCH1T45DCKR
  • Footprint: Package_TO_SOT_SMD:SOT-363_SC-70-6
  • 3D model: SC-70-6 (KiCad packages3D, STEP)
  • 3D model files: sn74lxch1t45dckr-etched.step / sn74lxch1t45dckr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74lxch1t45dckr.step / sn74lxch1t45dckr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (41 pp, sha256 68d1e381cf1516fb, retrieved 2026-10-17, tier: manufacturer)
  • 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