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74HCT125D
Public Unreviewedby Ray
Nexperia Buffers, Drivers, Receivers, Transceivers, SOIC-14. Datasheet-verified pinout, 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
markdown74HCT125D
Nexperia · Buffers, Drivers, Receivers, Transceivers · SOIC-14
74HCT125D from Nexperia, in a SOIC-14. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1OE | input | Output enable input for buffer 1 (active LOW). LOW enables 1Y to follow 1A; HIGH puts 1Y in high-impedance OFF-state. TTL input levels (VIH min 2.0 V, VIL max 0.8 V at VCC = 4.5-5.5 V). |
| 2 | 1A | input | Data input for buffer 1. Passed through to 1Y when 1OE is LOW. TTL input levels; input leakage ±0.1 µA typ, input capacitance 3.5 pF typ. |
| 3 | 1Y | tri_state | Data output for buffer 1. Drives the value of 1A when 1OE is LOW; high-impedance when 1OE is HIGH. Rated for IO up to ±35 mA absolute max; VOH ≥ 3.98 V at IO = -6 mA, VOL ≤ 0.26 V at IO = 6 mA (VCC = 4.5 V). |
| 4 | 2OE | input | Output enable input for buffer 2 (active LOW). LOW enables 2Y to follow 2A; HIGH puts 2Y in high-impedance OFF-state. |
| 5 | 2A | input | Data input for buffer 2. Passed through to 2Y when 2OE is LOW. |
| 6 | 2Y | tri_state | Data output for buffer 2. Drives the value of 2A when 2OE is LOW; high-impedance when 2OE is HIGH. |
| 7 | GND | power_in | Ground reference (0 V). Maximum sustained ground current ±70 mA per absolute maximum ratings. |
| 8 | 3Y | tri_state | Data output for buffer 3. Drives the value of 3A when 3OE is LOW; high-impedance when 3OE is HIGH. |
| 9 | 3A | input | Data input for buffer 3. Passed through to 3Y when 3OE is LOW. |
| 10 | 3OE | input | Output enable input for buffer 3 (active LOW). LOW enables 3Y to follow 3A; HIGH puts 3Y in high-impedance OFF-state. |
| 11 | 4Y | tri_state | Data output for buffer 4. Drives the value of 4A when 4OE is LOW; high-impedance when 4OE is HIGH. |
| 12 | 4A | input | Data input for buffer 4. Passed through to 4Y when 4OE is LOW. |
| 13 | 4OE | input | Output enable input for buffer 4 (active LOW). LOW enables 4Y to follow 4A; HIGH puts 4Y in high-impedance OFF-state. |
| 14 | VCC | power_in | Positive supply voltage. Recommended 4.5 V to 5.5 V for 74HCT125; absolute maximum -0.5 V to +7 V. Supply current ICC ≤ 8 µA at 25 °C (VCC = 5.5 V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOIC-14 |
| Category | Logic |
| Pins | 14 |
Ordering variants
Same part, different packaging or reel option.
74HCT125DD74HCT125DPW
CAD (KiCad official)
- Symbol:
74HCT125D - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (13 pp, sha256
3b5da3a3dcae2624, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).