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SN74LVC2244ADBQR

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Texas Instruments Logic ICs, SSOP-20-150mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SN74LVC2244ADBQR

Texas Instruments · Logic ICs · SSOP-20-150mil

SN74LVC2244ADBQR from Texas Instruments, in a SSOP-20-150mil. 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 1OE input Output Enable 1 for the first buffer section (1A1-1A4 to 1Y1-1Y4); the datasheet pin table does not state the active level.
2 1A1 input Data input 1A1 of the first buffer section; inputs accept voltages up to 5.5 V.
3 2Y4 output Output 2Y4 of the second buffer section; outputs have an equivalent 26-Ω series resistor so no external resistor is required.
4 1A2 input Data input 1A2 of the first buffer section; inputs accept voltages up to 5.5 V.
5 2Y3 output Output 2Y3 of the second buffer section; outputs have an equivalent 26-Ω series resistor so no external resistor is required.
6 1A3 input Data input 1A3 of the first buffer section; inputs accept voltages up to 5.5 V.
7 2Y2 output Output 2Y2 of the second buffer section; outputs have an equivalent 26-Ω series resistor so no external resistor is required.
8 1A4 input Data input 1A4 of the first buffer section; inputs accept voltages up to 5.5 V.
9 2Y1 output Output 2Y1 of the second buffer section; outputs have an equivalent 26-Ω series resistor so no external resistor is required.
10 GND power_in Ground pin.
11 2A1 input Data input 2A1 of the second buffer section; inputs accept voltages up to 5.5 V.
12 1Y4 output Output 1Y4 of the first buffer section; outputs have an equivalent 26-Ω series resistor so no external resistor is required.
13 2A2 input Data input 2A2 of the second buffer section; inputs accept voltages up to 5.5 V.
14 1Y3 output Output 1Y3 of the first buffer section; outputs have an equivalent 26-Ω series resistor so no external resistor is required.
15 2A3 input Data input 2A3 of the second buffer section; inputs accept voltages up to 5.5 V.
16 1Y2 output Output 1Y2 of the first buffer section; outputs have an equivalent 26-Ω series resistor so no external resistor is required.
17 2A4 input Data input 2A4 of the second buffer section; inputs accept voltages up to 5.5 V.
18 1Y1 output Output 1Y1 of the first buffer section; outputs have an equivalent 26-Ω series resistor so no external resistor is required.
19 2OE input Output Enable 2 for the second buffer section (2A1-2A4 to 2Y1-2Y4); the datasheet pin table does not state the active level.
20 VCC power_in Power supply pin; the device operates from 1.65 V to 3.6 V VCC.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SSOP-20-150mil
Category Logic ICs
Pins 20

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 = -2 mA; VCC = 1.65 V; -40°C to 125°C 6
High-level output voltage VOH 1.7 V IOH = -4 mA; VCC = 2.3 V; -40°C to 125°C 6
High-level output voltage VOH 2.2 V IOH = -4 mA; VCC = 2.7 V; -40°C to 125°C 6
High-level output voltage VOH 2.4 V IOH = -6 mA; VCC = 3 V; -40°C to 125°C 6
High-level output voltage VOH 2 V IOH = -8 mA; VCC = 2.7 V; -40°C to 125°C 6
Low-level output voltage VOL 0.2 V IOL = 100 μA; VCC = 1.65 V to 3.6 V; -40°C to 125°C 6
Low-level output voltage VOL 0.45 V IOL = 2 mA; VCC = 1.65 V; -40°C to 125°C 6
Low-level output voltage VOL 0.7 V IOL = 4 mA; VCC = 2.3 V; -40°C to 125°C 6
Low-level output voltage VOL 0.4 V IOL = 4 mA; VCC = 2.7 V; -40°C to 125°C 6
Low-level output voltage VOL 0.55 V IOL = 6 mA; VCC = 3 V; -40°C to 125°C 6
Low-level output voltage VOL 0.6 V IOL = 8 mA; VCC = 2.7 V; -40°C to 125°C 6
Low-level output voltage VOL 0.8 V IOL = 12 mA; VCC = 3 V; -40°C to 125°C 6
Input current II -5 5 μA VI = 0 to 5.5 V; VCC = 3.6 V; -40°C to 125°C 6
Power-off leakage current Ioff -10 10 μA VI or VO = 5.5 V; VCC = 0; -40°C to 125°C 6
High-impedance output leakage current IOZ -10 10 μA VO = 0 to 5.5 V; VCC = 3.6 V; -40°C to 125°C 6
Quiescent supply current ICC 10 μA VI = VCC or GND; IO = 0; VCC = 3.6 V; -40°C to 125°C 6
Additional quiescent supply current per input ΔICC 500 μA One input at VCC, 0.6 V, other inputs at VCC or GND; VCC = 2.7 V to 3.6 V; -40°C to 125°C 6
Propagation delay A to Y tpd 1.5 6.5 ns VCC = 3.3 V ± 0.3 V; -40°C to 125°C; see Figure 3 6
Enable time OE to Y ten 1 7.8 ns VCC = 3.3 V ± 0.3 V; -40°C to 125°C; see Figure 3 6
Disable time OE to Y tdis 1.5 7.6 ns VCC = 3.3 V ± 0.3 V; -40°C to 125°C; see Figure 3 6
Supply voltage VCC 1.65 3.6 V Operating 5
Supply voltage data retention 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 = 2.7 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 = 2.7 V to 3.6 V 5
Input voltage VI 0 5.5 V 5
Output voltage VO 0 V High or low state 5
Output voltage VO 0 5.5 V 3-state 5
High-level output current IOH -2 mA VCC = 1.65 V 5
High-level output current IOH -4 mA VCC = 2.3 V 5
High-level output current IOH -8 mA VCC = 2.7 V 5
High-level output current IOH -12 mA VCC = 3 V 5
Low-level output current IOL 2 mA VCC = 1.65 V 5
Low-level output current IOL 4 mA VCC = 2.3 V 5
Low-level output current IOL 8 mA VCC = 2.7 V 5
Low-level output current IOL 12 mA VCC = 3 V 5
Input transition rise or fall rate Δt/Δv 10 ns/V 5
Operating free-air temperature TA -40 125 °C 5
Supply voltage range VCC -0.5 6.5 V 4
Input voltage range VI -0.5 6.5 V 4
Voltage range applied to any output in the high-impedance or power-off state VO -0.5 6.5 V 4
Voltage range applied to any output in the high or low state VO -0.5 V High or low state 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 -100 100 mA 4
Storage temperature range Tstg -65 150 °C 4
Junction-to-ambient thermal resistance (DBQ package) RθJA 94.7 °C/W DBQ package column 5

CAD (KiCad official)

  • Symbol: SN74LVC2244ADBQR
  • Footprint: Package_SO:SSOP-20_3.9x8.7mm_P0.635mm
  • 3D model: SSOP-20-150mil (KiCad packages3D, STEP)
  • 3D model files: sn74lvc2244adbqr-etched.step / sn74lvc2244adbqr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74lvc2244adbqr.step / sn74lvc2244adbqr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (30 pp, sha256 5ef8b4b7332c1b8f, retrieved 2026-10-29, 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