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SN74LXC1T14DCKR

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TEXAS INSTRUMENTS Translators, Level Shifters, SC-70-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SN74LXC1T14DCKR

TEXAS INSTRUMENTS · Translators, Level Shifters · SC-70-5

SN74LXC1T14DCKR from TEXAS INSTRUMENTS, in a SC-70-5. 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 VCCI power_in Input supply voltage for input A; the datasheet requires 1.1 V ≤ VCCI ≤ 5.5 V.
2 A input Input A, referenced to VCCI logic levels, with Schmitt-trigger input behavior.
3 GND power_in Ground reference for the device.
4 Y output Inverting output Y, referenced to VCCO logic levels.
5 VCCO power_in Output supply voltage for output Y; the datasheet requires 1.1 V ≤ VCCO ≤ 5.5 V.

Key specifications

Parameter Value
Manufacturer TEXAS INSTRUMENTS
Package SC-70-5
Category Logic
Pins 5

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Positive-going input threshold voltage, VCCI=VCCO=1.1 V VT+ 0.44 0.88 V Data input referenced to VCCI; TA = -40°C to 125°C 6
Positive-going input threshold voltage, VCCI=VCCO=1.4 V VT+ 0.6 0.98 V Data input referenced to VCCI; TA = -40°C to 125°C 6
Positive-going input threshold voltage, VCCI=VCCO=1.65 V VT+ 0.76 1.13 V Data input referenced to VCCI; TA = -40°C to 125°C 6
Positive-going input threshold voltage, VCCI=VCCO=2.3 V VT+ 1.08 1.56 V Data input referenced to VCCI; TA = -40°C to 125°C 6
Positive-going input threshold voltage, VCCI=VCCO=3 V VT+ 1.48 1.92 V Data input referenced to VCCI; TA = -40°C to 125°C 6
Positive-going input threshold voltage, VCCI=VCCO=4.5 V VT+ 2.19 2.74 V Data input referenced to VCCI; TA = -40°C to 125°C 6
Positive-going input threshold voltage, VCCI=VCCO=5.5 V VT+ 2.65 3.33 V Data input referenced to VCCI; TA = -40°C to 125°C 6
Negative-going input threshold voltage, VCCI=VCCO=1.1 V VT- 0.17 0.48 V Data input referenced to VCCI; TA = -40°C to 125°C 6
Negative-going input threshold voltage, VCCI=VCCO=1.4 V VT- 0.28 0.59 V Data input referenced to VCCI; TA = -40°C to 125°C 6
Negative-going input threshold voltage, VCCI=VCCO=1.65 V VT- 0.35 0.69 V Data input referenced to VCCI; TA = -40°C to 125°C 6
Negative-going input threshold voltage, VCCI=VCCO=2.3 V VT- 0.56 0.97 V Data input referenced to VCCI; TA = -40°C to 125°C 6
Negative-going input threshold voltage, VCCI=VCCO=3 V VT- 0.89 1.5 V Data input referenced to VCCI; TA = -40°C to 125°C 6
Negative-going input threshold voltage, VCCI=VCCO=4.5 V VT- 1.51 1.97 V Data input referenced to VCCI; TA = -40°C to 125°C 6
Negative-going input threshold voltage, VCCI=VCCO=5.5 V VT- 1.88 2.4 V Data input referenced to VCCI; TA = -40°C to 125°C 6
Input threshold hysteresis, VCCI=VCCO=1.1 V ΔVT 0.2 0.4 V Data inputs (Ax, Bx) referenced to VCCI; TA = -40°C to 125°C 6
Input threshold hysteresis, VCCI=VCCO=1.4 V ΔVT 0.25 0.5 V Data inputs (Ax, Bx) referenced to VCCI; TA = -40°C to 125°C 6
Input threshold hysteresis, VCCI=VCCO=1.65 V ΔVT 0.3 0.55 V Data inputs (Ax, Bx) referenced to VCCI; TA = -40°C to 125°C 6
Input threshold hysteresis, VCCI=VCCO=2.3 V ΔVT 0.38 0.65 V Data inputs (Ax, Bx) referenced to VCCI; TA = -40°C to 125°C 6
Input threshold hysteresis, VCCI=VCCO=3 V ΔVT 0.46 0.72 V Data inputs (Ax, Bx) referenced to VCCI; TA = -40°C to 125°C 6
Input threshold hysteresis, VCCI=VCCO=4.5 V ΔVT 0.58 0.93 V Data inputs (Ax, Bx) referenced to VCCI; TA = -40°C to 125°C 6
Input threshold hysteresis, VCCI=VCCO=5.5 V ΔVT 0.69 1.06 V Data inputs (Ax, Bx) referenced to VCCI; TA = -40°C to 125°C 6
High-level output voltage, VCCO=1.4 V VOH 1 V IOH = -4 mA; VCCI=1.4 V; TA = -40°C to 125°C 6
High-level output voltage, VCCO=1.65 V VOH 1.2 V IOH = -8 mA; VCCI=1.65 V; TA = -40°C to 125°C 6
High-level output voltage, VCCO=2.3 V VOH 1.9 V IOH = -12 mA; VCCI=2.3 V; TA = -40°C to 125°C 6
High-level output voltage, VCCO=3 V VOH 2.4 V IOH = -24 mA; VCCI=3 V; TA = -40°C to 125°C 6
High-level output voltage, VCCO=4.5 V VOH 3.8 V IOH = -32 mA; VCCI=4.5 V; TA = -40°C to 125°C 6
Low-level output voltage VOL 0.1 V IOL = 100 µA; VCCI=VCCO=1.1 V-5.5 V; TA = -40°C to 125°C 6
Low-level output voltage, VCCO=1.4 V VOL 0.3 V IOL = 4 mA; VCCI=1.4 V; TA = -40°C to 125°C 6
Low-level output voltage, VCCO=1.65 V VOL 0.45 V IOL = 8 mA; VCCI=1.65 V; TA = -40°C to 125°C 6
Low-level output voltage, VCCO=2.3 V VOL 0.3 V IOL = 12 mA; VCCI=2.3 V; TA = -40°C to 125°C 6
Low-level output voltage, VCCO=3 V VOL 0.55 V IOL = 24 mA; VCCI=3 V; TA = -40°C to 125°C 6
Low-level output voltage, VCCO=4.5 V VOL 0.55 V IOL = 32 mA; VCCI=4.5 V; TA = -40°C to 125°C 6
Input leakage current, data input II -2 2 µA VI = VCCI or GND; VCCI=VCCO=1.1 V-5.5 V; TA = -40°C to 125°C 6
Partial power down current, inputs Ioff -2.5 2.5 µA VI or VO = 0 V-5.5 V; VCCI=0 V; VCCO=0 V-5.5 V; TA = -40°C to 125°C 6
Floating supply partial power down current, inputs (VCCI floating) Ioff-float -2.5 2.5 µA VI or VO = GND; VCCI floating; VCCO=0 V-5.5 V; TA = -40°C to 125°C 6
Floating supply partial power down current, inputs (VCCO floating) Ioff-float -2.5 2.5 µA VI or VO = GND; VCCI=0 V-5.5 V; VCCO floating; TA = -40°C to 125°C 6
VCCI supply current, VCCI=VCCO=1.1 V-5.5 V ICCI 6 µA VI = VCCI or GND; IO = 0; TA = -40°C to 125°C 7
VCCI supply current, VCCI=0 V, VCCO=5.5 V ICCI -1 µA VI = VCCI or GND; IO = 0; TA = -40°C to 125°C 7
VCCI supply current, VCCI=5.5 V, VCCO=0 V ICCI 4 µA VI = VCCI or GND; IO = 0; TA = -40°C to 125°C 7
VCCO supply current, VCCI=VCCO=1.1 V-5.5 V ICCO 6 µA VI = VCCI or GND; IO = 0; TA = -40°C to 125°C 7
VCCO supply current, VCCI=0 V, VCCO=5.5 V ICCO 4 µA VI = VCCI or GND; IO = 0; TA = -40°C to 125°C 7
VCCO supply current, VCCI=5.5 V, VCCO=0 V ICCO -1 µA VI = VCCI or GND; IO = 0; TA = -40°C to 125°C 7
Combined supply current ICCI + ICCO ICCI + ICCO 6 µA VI = VCCI or GND; IO = 0; VCCI=VCCO=1.1 V-5.5 V; TA = -40°C to 125°C 7
Input capacitance Ci 5 10 pF VI = 3.3 V or GND; VCCI=VCCO=3.3 V 7
Absolute maximum input supply voltage, VCCI (input A) VCCI -0.5 6.5 V 4
Absolute maximum output supply voltage, VCCO (output Y) VCCO -0.5 6.5 V 4
Absolute maximum input voltage VI -0.5 6.5 V 4
Absolute maximum voltage applied to any output in 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 -200 200 mA 4
Storage temperature Tstg -65 150 °C 4
Input supply voltage, VCCI VCCI 1.1 5.5 V 5
Output supply voltage, VCCO VCCO 1.1 5.5 V 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, tri-state VO 0 5.5 V Tri-state 5
Operating free-air temperature TA -40 125 °C 5
Junction-to-ambient thermal resistance (DCK, SC70 5-pin) RθJA 222.9 °C/W 5

CAD (KiCad official)

  • Symbol: SN74LXC1T14DCKR
  • Footprint: Package_TO_SOT_SMD:SOT-353_SC-70-5
  • 3D model: SC-70-5 (KiCad packages3D, STEP)
  • 3D model files: sn74lxc1t14dckr-etched.step / sn74lxc1t14dckr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74lxc1t14dckr.step / sn74lxc1t14dckr.glb are the bare package body.

Provenance

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

  • Datasheet: TEXAS INSTRUMENTS datasheet (26 pp, sha256 8bfba5595858e5df, 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