# 74LVC125ABQ

**Nexperia** · Buffers, Drivers, Receivers, Transceivers · DHVQFN-14-EP(2.5x3)

74LVC125ABQ from Nexperia, in a DHVQFN-14-EP(2.5x3). 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 data enable input for gate 1; a HIGH level places output 1Y in the high-impedance OFF-state. |
| 2 | 1A | input | Data input for buffer 1; tolerant of 5.5 V overvoltage and can be driven from 3.3 V or 5 V devices. |
| 3 | 1Y | tri_state | 3-state data output of buffer 1, high-impedance when 1OE is HIGH; output tolerates up to 5.5 V in the 3-state condition. |
| 4 | 2OE | input | Active-LOW data enable input for gate 2; a HIGH level places output 2Y in the high-impedance OFF-state. |
| 5 | 2A | input | Data input for buffer 2; tolerant of 5.5 V overvoltage and can be driven from 3.3 V or 5 V devices. |
| 6 | 2Y | tri_state | 3-state data output of buffer 2, high-impedance when 2OE is HIGH; output tolerates up to 5.5 V in the 3-state condition. |
| 7 | GND | power_in | Ground (0 V) reference for all voltages on the device. |
| 8 | 3Y | tri_state | 3-state data output of buffer 3, high-impedance when 3OE is HIGH; output tolerates up to 5.5 V in the 3-state condition. |
| 9 | 3A | input | Data input for buffer 3; tolerant of 5.5 V overvoltage and can be driven from 3.3 V or 5 V devices. |
| 10 | 3OE | input | Active-LOW data enable input for gate 3; a HIGH level places output 3Y in the high-impedance OFF-state. |
| 11 | 4Y | tri_state | 3-state data output of buffer 4, high-impedance when 4OE is HIGH; output tolerates up to 5.5 V in the 3-state condition. |
| 12 | 4A | input | Data input for buffer 4; tolerant of 5.5 V overvoltage and can be driven from 3.3 V or 5 V devices. |
| 13 | 4OE | input | Active-LOW data enable input for gate 4; a HIGH level places output 4Y in the high-impedance OFF-state. |
| 14 | VCC | power_in | Supply voltage; recommended operating range 1.65 V to 3.6 V (functional down to 1.2 V), absolute maximum 6.5 V. |
| 15 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | DHVQFN-14-EP(2.5x3) |
| Category | Logic |
| Pins | 15 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| supply voltage | VCC | -0.5 |  | 6.5 | V |  | 3 |
| input clamping current | IIK | -50 |  |  | mA | VI < 0 V | 3 |
| input voltage | VI | -0.5 |  | 6.5 | V |  | 3 |
| output clamping current | IOK | -50 |  | 50 | mA | VO > VCC or VO < 0 V | 3 |
| output voltage | VO | -0.5 |  |  | V | output HIGH or LOW-state | 3 |
| output voltage | VO | -0.5 |  | 6.5 | V | output 3-state | 3 |
| output current | IO | -50 |  | 50 | mA | VO = 0 V to VCC | 3 |
| supply current | ICC |  |  | 100 | mA |  | 3 |
| ground current | IGND | -100 |  |  | mA |  | 3 |
| total power dissipation | Ptot |  |  | 500 | mW | Tamb = -40 °C to +125 °C | 3 |
| storage temperature | Tstg | -65 |  | 150 | °C |  | 3 |
| supply voltage | VCC | 1.65 |  | 3.6 | V |  | 3 |
| supply voltage (functional) | VCC | 1.2 |  |  | V | functional | 3 |
| input voltage | VI | 0 |  | 5.5 | V |  | 3 |
| output voltage | VO | 0 |  |  | V | output HIGH or LOW state | 3 |
| output voltage | VO | 0 |  | 5.5 | V | output 3-state | 3 |
| ambient temperature | Tamb | -40 |  | 125 | °C |  | 3 |
| input transition rise and fall rate | Δt/ΔV | 0 |  | 20 | ns/V | VCC = 2.3 V to 2.7 V | 3 |
| input transition rise and fall rate | Δt/ΔV | 0 |  | 10 | ns/V | VCC = 2.7 V to 3.6 V | 3 |
| HIGH-level input voltage | VIH | 1.08 |  |  | V | VCC = 1.2 V | 4 |
| HIGH-level input voltage | VIH | 1.7 |  |  | V | VCC = 2.3 V to 2.7 V | 4 |
| HIGH-level input voltage | VIH | 2 |  |  | V | VCC = 2.7 V to 3.6 V | 4 |
| LOW-level input voltage | VIL |  |  | 0.12 | V | VCC = 1.2 V | 4 |
| LOW-level input voltage | VIL |  |  | 0.7 | V | VCC = 2.3 V to 2.7 V | 4 |
| LOW-level input voltage | VIL |  |  | 0.8 | V | VCC = 2.7 V to 3.6 V | 4 |
| HIGH-level output voltage | VOH | 1.05 |  |  | V | VI = VIH or VIL; IO = -4 mA; VCC = 1.65 V | 4 |
| HIGH-level output voltage | VOH | 1.65 |  |  | V | VI = VIH or VIL; IO = -8 mA; VCC = 2.3 V | 4 |
| HIGH-level output voltage | VOH | 2.05 |  |  | V | VI = VIH or VIL; IO = -12 mA; VCC = 2.7 V | 4 |
| HIGH-level output voltage | VOH | 2.25 |  |  | V | VI = VIH or VIL; IO = -18 mA; VCC = 3.0 V | 4 |
| HIGH-level output voltage | VOH | 2 |  |  | V | VI = VIH or VIL; IO = -24 mA; VCC = 3.0 V | 4 |
| LOW-level output voltage | VOL |  |  | 0.3 | V | VI = VIH or VIL; IO = 100 μA; VCC = 1.65 V to 3.6 V | 4 |
| LOW-level output voltage | VOL |  |  | 0.65 | V | VI = VIH or VIL; IO = 4 mA; VCC = 1.65 V | 4 |
| LOW-level output voltage | VOL |  |  | 0.8 | V | VI = VIH or VIL; IO = 8 mA; VCC = 2.3 V | 4 |
| LOW-level output voltage | VOL |  |  | 0.6 | V | VI = VIH or VIL; IO = 12 mA; VCC = 2.7 V | 4 |
| input leakage current | II | -20 | 0.1 | 20 | μA | VCC = 3.6 V; VI = 5.5 V or GND | 4 |
| OFF-state output current | IOZ | -20 | 0.1 | 20 | μA | VI = VIH or VIL; VCC = 3.6 V; VO = 5.5 V or GND | 4 |
| power-off leakage current | IOFF | -20 | 0.1 | 20 | μA | VCC = 0.0 V; VI or VO = 5.5 V | 4 |
| supply current | ICC |  | 0.1 | 40 | μA | VCC = 3.6 V; VI = VCC or GND; IO = 0 A | 4 |
| additional supply current | ΔICC |  | 5 | 5000 | μA | per input pin; VI = VCC - 0.6 V; IO = 0 A; VCC = 2.7 V to 3.6 V | 4 |
| propagation delay nA to nY | tpd | 1.5 | 5.4 | 12.8 | ns | nA to nY; see Fig. 6; VCC = 1.65 V to 1.95 V | 5 |
| propagation delay nA to nY | tpd | 1 | 2.9 | 6.7 | ns | nA to nY; see Fig. 6; VCC = 2.3 V to 2.7 V | 5 |
| propagation delay nA to nY | tpd | 1.5 | 2.8 | 7 | ns | nA to nY; see Fig. 6; VCC = 2.7 V | 5 |
| propagation delay nA to nY | tpd | 1 | 2.5 | 6 | ns | nA to nY; see Fig. 6; VCC = 3.0 V to 3.6 V | 5 |
| enable time nOE to nY | ten | 1 | 5 | 14.2 | ns | nOE to nY; see Fig. 7; VCC = 1.65 V to 1.95 V | 5 |
| enable time nOE to nY | ten | 0.5 | 2.9 | 7.9 | ns | nOE to nY; see Fig. 7; VCC = 2.3 V to 2.7 V | 5 |
| enable time nOE to nY | ten | 1.5 | 3.1 | 8.5 | ns | nOE to nY; see Fig. 7; VCC = 2.7 V | 5 |
| enable time nOE to nY | ten | 1 | 2.3 | 7 | ns | nOE to nY; see Fig. 7; VCC = 3.0 V to 3.6 V | 5 |
| disable time nOE to nY | tdis | 2.2 | 4.6 | 8.7 | ns | nOE to nY; see Fig. 7; VCC = 1.65 V to 1.95 V | 5 |
| disable time nOE to nY | tdis | 0.5 | 2.6 | 5 | ns | nOE to nY; see Fig. 7; VCC = 2.3 V to 2.7 V | 5 |
| disable time nOE to nY | tdis | 1.5 | 3.1 | 6.5 | ns | nOE to nY; see Fig. 7; VCC = 2.7 V | 5 |
| disable time nOE to nY | tdis | 1 | 3.2 | 6 | ns | nOE to nY; see Fig. 7; VCC = 3.0 V to 3.6 V | 5 |
| output skew time | tsk(o) |  |  | 1.5 | ns | VCC = 3.0 V to 3.6 V | 5 |

## CAD (KiCad official)

- Symbol: `74LVC125ABQ`
- Footprint: `Package_DFN_QFN:DHVQFN-14-1EP_2.5x3mm_P0.5mm_EP1x1.5mm`
- 3D model: DHVQFN-14-EP(2.5x3), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal VQFN 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: `74lvc125abq-etched.step` / `74lvc125abq-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74lvc125abq.step` / `74lvc125abq.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Nexperia datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588894183561547776) (13 pp, sha256 `6c06513c299d865b`, retrieved 2026-10-17, tier: lcsc)
- **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](docs/74lvc125abq-datasheet.pdf)