component
74LCX244MTCX
Public Made by Adomby adom
onsemi Buffers, Drivers, Receivers, Transceivers, TSSOP-20. 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
markdown74LCX244MTCX
onsemi · Buffers, Drivers, Receivers, Transceivers · TSSOP-20
74LCX244MTCX from onsemi, in a TSSOP-20. 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 | OE1 | input | Active-low 3-STATE output enable for outputs O0-O3 (pins 18, 16, 14, 12); HIGH puts them in high impedance, and the input is 5V tolerant (VI 0 to 5.5V). |
| 2 | I0 | input | Data input 0, 5V tolerant (VI 0 to 5.5V), buffered non-inverting to O0 when OE1 is LOW. |
| 3 | O4 | tri_state | 3-STATE output 4 following I4, enabled when OE2 is LOW, with ±24mA drive at VCC = 3.0-3.6V. |
| 4 | I1 | input | Data input 1, 5V tolerant (VI 0 to 5.5V), buffered non-inverting to O1 when OE1 is LOW. |
| 5 | O5 | tri_state | 3-STATE output 5 following I5, enabled when OE2 is LOW, with ±24mA drive at VCC = 3.0-3.6V. |
| 6 | I2 | input | Data input 2, 5V tolerant (VI 0 to 5.5V), buffered non-inverting to O2 when OE1 is LOW. |
| 7 | O6 | tri_state | 3-STATE output 6 following I6, enabled when OE2 is LOW, with ±24mA drive at VCC = 3.0-3.6V. |
| 8 | I3 | input | Data input 3, 5V tolerant (VI 0 to 5.5V), buffered non-inverting to O3 when OE1 is LOW. |
| 9 | O7 | tri_state | 3-STATE output 7 following I7, enabled when OE2 is LOW, with ±24mA drive at VCC = 3.0-3.6V. |
| 10 | GND | power_in | Ground pin (0V reference). |
| 11 | I7 | input | Data input 7, 5V tolerant (VI 0 to 5.5V), buffered non-inverting to O7 when OE2 is LOW. |
| 12 | O3 | tri_state | 3-STATE output 3 following I3, enabled when OE1 is LOW, with ±24mA drive at VCC = 3.0-3.6V. |
| 13 | I6 | input | Data input 6, 5V tolerant (VI 0 to 5.5V), buffered non-inverting to O6 when OE2 is LOW. |
| 14 | O2 | tri_state | 3-STATE output 2 following I2, enabled when OE1 is LOW, with ±24mA drive at VCC = 3.0-3.6V. |
| 15 | I5 | input | Data input 5, 5V tolerant (VI 0 to 5.5V), buffered non-inverting to O5 when OE2 is LOW. |
| 16 | O1 | tri_state | 3-STATE output 1 following I1, enabled when OE1 is LOW, with ±24mA drive at VCC = 3.0-3.6V. |
| 17 | I4 | input | Data input 4, 5V tolerant (VI 0 to 5.5V), buffered non-inverting to O4 when OE2 is LOW. |
| 18 | O0 | tri_state | 3-STATE output 0 following I0, enabled when OE1 is LOW, with ±24mA drive at VCC = 3.0-3.6V. |
| 19 | OE2 | input | Active-low 3-STATE output enable for outputs O4-O7 (pins 3, 5, 7, 9); HIGH puts them in high impedance, and the input is 5V tolerant (VI 0 to 5.5V). |
| 20 | VCC | power_in | Supply voltage, 2.0V to 3.6V recommended operating (2.3V to 3.6V specified), absolute maximum −0.5V to +7.0V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | TSSOP-20 |
| Category | Logic |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
74LCX244MTCX - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
74lcx244mtcx-etched.step/74lcx244mtcx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74lcx244mtcx.step/74lcx244mtcx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (16 pp, sha256
7e26c398f50b3023, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).