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SN74LV244ANSR
Public Made by Adomby adom
Texas Instruments Buffers, Drivers, Receivers, Transceivers, SOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSN74LV244ANSR
Texas Instruments · Buffers, Drivers, Receivers, Transceivers · SOP-20-208mil
SN74LV244ANSR from Texas Instruments, in a SOP-20-208mil. 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 | Active-low output enable for buffers 1Y1 to 1Y4; when high, outputs 1Y1 to 1Y4 go to high impedance. |
| 2 | 1A1 | input | Data input to buffer 1Y1; unused inputs must be tied to VCC or GND and must not be left floating. |
| 3 | 2Y4 | output | Three-state buffer output of channel 2A4; high impedance when 2OE is high, and must not be tied directly to VCC or GND. |
| 4 | 1A2 | input | Data input to buffer 1Y2; unused inputs must be tied to VCC or GND and must not be left floating. |
| 5 | 2Y3 | output | Three-state buffer output of channel 2A3; high impedance when 2OE is high, and must not be tied directly to VCC or GND. |
| 6 | 1A3 | input | Data input to buffer 1Y3; unused inputs must be tied to VCC or GND and must not be left floating. |
| 7 | 2Y2 | output | Three-state buffer output of channel 2A2; high impedance when 2OE is high, and must not be tied directly to VCC or GND. |
| 8 | 1A4 | input | Data input to buffer 1Y4; unused inputs must be tied to VCC or GND and must not be left floating. |
| 9 | 2Y1 | output | Three-state buffer output of channel 2A1; high impedance when 2OE is high, and must not be tied directly to VCC or GND. |
| 10 | GND | power_in | Ground reference for the device. |
| 11 | 2A1 | input | Data input to buffer 2Y1; unused inputs must be tied to VCC or GND and must not be left floating. |
| 12 | 1Y4 | output | Three-state buffer output of channel 1A4; high impedance when 1OE is high, and must not be tied directly to VCC or GND. |
| 13 | 2A2 | input | Data input to buffer 2Y2; unused inputs must be tied to VCC or GND and must not be left floating. |
| 14 | 1Y3 | output | Three-state buffer output of channel 1A3; high impedance when 1OE is high, and must not be tied directly to VCC or GND. |
| 15 | 2A3 | input | Data input to buffer 2Y3; unused inputs must be tied to VCC or GND and must not be left floating. |
| 16 | 1Y2 | output | Three-state buffer output of channel 1A2; high impedance when 1OE is high, and must not be tied directly to VCC or GND. |
| 17 | 2A4 | input | Data input to buffer 2Y4; unused inputs must be tied to VCC or GND and must not be left floating. |
| 18 | 1Y1 | output | Three-state buffer output of channel 1A1; high impedance when 1OE is high, and must not be tied directly to VCC or GND. |
| 19 | 2OE | input | Active-low output enable for buffers 2Y1 to 2Y4; when high, outputs 2Y1 to 2Y4 go to high impedance. |
| 20 | VCC | power_in | Positive supply pin; operating range is 2 V to 5.5 V, and each VCC pin needs a bypass capacitor placed close to the device. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOP-20-208mil |
| Category | Logic |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
SN74LV244ANSR - Footprint:
Package_SO:SOP-20_7.5x12.8mm_P1.27mm - 3D model: SOP-20-208mil, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 2.65 mm nominal SOIC height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
sn74lv244ansr-etched.step/sn74lv244ansr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74lv244ansr.step/sn74lv244ansr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (39 pp, sha256
d415bed908dc6f14, retrieved 2026-10-08, 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).