component
74LVC245ABQ
Public Made by Adomby adom
Nexperia Buffers, Drivers, Receivers, Transceivers, DHVQFN-20(2.5x4.5). 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
markdown74LVC245ABQ
Nexperia · Buffers, Drivers, Receivers, Transceivers · DHVQFN-20(2.5x4.5)
74LVC245ABQ from Nexperia, in a DHVQFN-20(2.5x4.5). 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 | DIR | input | Direction control input that selects the transfer direction between the A and B ports when OE is LOW (Table 3). |
| 2 | A0 | bidirectional | Data input/output on the A port; goes high-impedance (OFF-state) when OE is HIGH. |
| 3 | A1 | bidirectional | Data input/output on the A port; goes high-impedance (OFF-state) when OE is HIGH. |
| 4 | A2 | bidirectional | Data input/output on the A port; goes high-impedance (OFF-state) when OE is HIGH. |
| 5 | A3 | bidirectional | Data input/output on the A port; goes high-impedance (OFF-state) when OE is HIGH. |
| 6 | A4 | bidirectional | Data input/output on the A port; goes high-impedance (OFF-state) when OE is HIGH. |
| 7 | A5 | bidirectional | Data input/output on the A port; goes high-impedance (OFF-state) when OE is HIGH. |
| 8 | A6 | bidirectional | Data input/output on the A port; goes high-impedance (OFF-state) when OE is HIGH. |
| 9 | A7 | bidirectional | Data input/output on the A port; goes high-impedance (OFF-state) when OE is HIGH. |
| 10 | GND | power_in | Ground (0 V) reference for all voltages. |
| 11 | B7 | bidirectional | Data input/output on the B port; goes high-impedance (OFF-state) when OE is HIGH. |
| 12 | B6 | bidirectional | Data input/output on the B port; goes high-impedance (OFF-state) when OE is HIGH. |
| 13 | B5 | bidirectional | Data input/output on the B port; goes high-impedance (OFF-state) when OE is HIGH. |
| 14 | B4 | bidirectional | Data input/output on the B port; goes high-impedance (OFF-state) when OE is HIGH. |
| 15 | B3 | bidirectional | Data input/output on the B port; goes high-impedance (OFF-state) when OE is HIGH. |
| 16 | B2 | bidirectional | Data input/output on the B port; goes high-impedance (OFF-state) when OE is HIGH. |
| 17 | B1 | bidirectional | Data input/output on the B port; goes high-impedance (OFF-state) when OE is HIGH. |
| 18 | B0 | bidirectional | Data input/output on the B port; goes high-impedance (OFF-state) when OE is HIGH. |
| 19 | OE | input | Output enable input, active LOW; a HIGH forces all outputs to the high-impedance OFF-state. |
| 20 | VCC | power_in | Supply voltage; recommended 1.65 V to 3.6 V, functional down to 1.2 V (Table 5). |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | DHVQFN-20(2.5x4.5) |
| Category | Logic |
| Pins | 21 |
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 | 4 | ||
| input clamping current | IIK | -50 | mA | VI < 0 V | 4 | ||
| input voltage | VI | -0.5 | 6.5 | V | 4 | ||
| output clamping current | IOK | -50 | 50 | mA | VO > VCC or VO < 0 V | 4 | |
| output voltage | VO | -0.5 | V | output HIGH or LOW | 4 | ||
| output voltage | VO | -0.5 | 6.5 | V | output 3-state | 4 | |
| output current | IO | -50 | 50 | mA | VO = 0 V to VCC | 4 | |
| supply current | ICC | 100 | mA | 4 | |||
| ground current | IGND | -100 | mA | 4 | |||
| storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| total power dissipation | Ptot | 500 | mW | Tamb = -40 °C to +125 °C; SOT764-1 (DHVQFN20); derates 12.9 mW/K above 111 °C | 4 | ||
| supply voltage | VCC | 1.65 | 3.6 | V | 5 | ||
| supply voltage (functional) | VCC | 1.2 | 3.6 | V | functional | 5 | |
| input voltage | VI | 0 | 5.5 | V | 5 | ||
| output voltage | VO | 0 | V | output HIGH or LOW | 5 | ||
| output voltage | VO | 0 | 5.5 | V | output 3-state | 5 | |
| ambient temperature | Tamb | -40 | 125 | °C | in free air | 5 | |
| input transition rise and fall rate | Δt/ΔV | 0 | 20 | ns/V | VCC = 1.2 V to 2.7 V | 5 | |
| input transition rise and fall rate | Δt/ΔV | 0 | 10 | ns/V | VCC = 2.7 V to 3.6 V | 5 | |
| HIGH-level input voltage | VIH | 1.08 | V | Tamb = -40 °C to +125 °C; VCC = 1.2 V | 5 | ||
| HIGH-level input voltage | VIH | 1.7 | V | Tamb = -40 °C to +125 °C; VCC = 2.3 V to 2.7 V | 5 | ||
| HIGH-level input voltage | VIH | 2 | V | Tamb = -40 °C to +125 °C; VCC = 2.7 V to 3.6 V | 5 | ||
| LOW-level input voltage | VIL | 0.12 | V | Tamb = -40 °C to +125 °C; VCC = 1.2 V | 5 | ||
| LOW-level input voltage | VIL | 0.7 | V | Tamb = -40 °C to +125 °C; VCC = 2.3 V to 2.7 V | 5 | ||
| LOW-level input voltage | VIL | 0.8 | V | Tamb = -40 °C to +125 °C; VCC = 2.7 V to 3.6 V | 5 | ||
| HIGH-level output voltage | VOH | 1.05 | V | Tamb = -40 °C to +125 °C; VI = VIH or VIL; IO = -4 mA; VCC = 1.65 V | 5 | ||
| HIGH-level output voltage | VOH | 1.65 | V | Tamb = -40 °C to +125 °C; VI = VIH or VIL; IO = -8 mA; VCC = 2.3 V | 5 | ||
| HIGH-level output voltage | VOH | 2.05 | V | Tamb = -40 °C to +125 °C; VI = VIH or VIL; IO = -12 mA; VCC = 2.7 V | 5 | ||
| HIGH-level output voltage | VOH | 2.25 | V | Tamb = -40 °C to +125 °C; VI = VIH or VIL; IO = -18 mA; VCC = 3.0 V | 5 | ||
| HIGH-level output voltage | VOH | 2 | V | Tamb = -40 °C to +125 °C; VI = VIH or VIL; IO = -24 mA; VCC = 3.0 V | 5 | ||
| LOW-level output voltage | VOL | 0.3 | V | Tamb = -40 °C to +125 °C; VI = VIH or VIL; IO = 100 μA; VCC = 1.65 V to 3.6 V | 5 | ||
| LOW-level output voltage | VOL | 0.65 | V | Tamb = -40 °C to +125 °C; VI = VIH or VIL; IO = 4 mA; VCC = 1.65 V | 5 | ||
| LOW-level output voltage | VOL | 0.8 | V | Tamb = -40 °C to +125 °C; VI = VIH or VIL; IO = 8 mA; VCC = 2.3 V | 5 | ||
| LOW-level output voltage | VOL | 0.6 | V | Tamb = -40 °C to +125 °C; VI = VIH or VIL; IO = 12 mA; VCC = 2.7 V | 5 | ||
| input leakage current | II | -20 | 0.1 | 20 | μA | Tamb = -40 °C to +125 °C; VI = 5.5 V or GND; VCC = 3.6 V | 6 |
| OFF-state output current | IOZ | -20 | 0.1 | 20 | μA | Tamb = -40 °C to +125 °C; VI = VIH or VIL; VO = 5.5 V or GND; VCC = 3.6 V | 6 |
| power-off leakage current | IOFF | -20 | 0.1 | 20 | μA | Tamb = -40 °C to +125 °C; VI or VO = 5.5 V; VCC = 0.0 V | 6 |
| supply current | ICC | 0.1 | 40 | μA | Tamb = -40 °C to +125 °C; VI = VCC or GND; IO = 0 A; VCC = 3.6 V | 6 | |
| additional supply current | ΔICC | 5 | 5000 | μA | Tamb = -40 °C to +125 °C; per input pin; VI = VCC - 0.6 V; IO = 0 A; VCC = 2.7 V to 3.6 V | 6 | |
| propagation delay | tpd | 1.5 | 6.5 | 16.9 | ns | Tamb = -40 °C to +125 °C; nAn to nBn; nBn to nAn; see Fig. 3; VCC = 1.65 V to 1.95 V | 7 |
| propagation delay | tpd | 1 | 3.4 | 8.7 | ns | Tamb = -40 °C to +125 °C; nAn to nBn; nBn to nAn; see Fig. 3; VCC = 2.3 V to 2.7 V | 7 |
| propagation delay | tpd | 1.5 | 3.4 | 9.5 | ns | Tamb = -40 °C to +125 °C; nAn to nBn; nBn to nAn; see Fig. 3; VCC = 2.7 V | 7 |
| propagation delay | tpd | 1.5 | 2.9 | 8 | ns | Tamb = -40 °C to +125 °C; nAn to nBn; nBn to nAn; see Fig. 3; VCC = 3.0 V to 3.6 V | 7 |
| enable time | ten | 1.9 | 8.3 | 22.5 | ns | Tamb = -40 °C to +125 °C; nOE to nAn, nBn; see Fig. 4; VCC = 1.65 V to 1.95 V | 7 |
| enable time | ten | 1.5 | 4.6 | 12.4 | ns | Tamb = -40 °C to +125 °C; nOE to nAn, nBn; see Fig. 4; VCC = 2.3 V to 2.7 V | 7 |
| enable time | ten | 1.5 | 4.8 | 12 | ns | Tamb = -40 °C to +125 °C; nOE to nAn, nBn; see Fig. 4; VCC = 2.7 V | 7 |
| enable time | ten | 1.5 | 3.7 | 11 | ns | Tamb = -40 °C to +125 °C; nOE to nAn, nBn; see Fig. 4; VCC = 3.0 V to 3.6 V | 7 |
| disable time | tdis | 2.9 | 5.5 | 14.2 | ns | Tamb = -40 °C to +125 °C; nOE to nAn, nBn; see Fig. 4; VCC = 1.65 V to 1.95 V | 7 |
| disable time | tdis | 1 | 3.1 | 8.2 | ns | Tamb = -40 °C to +125 °C; nOE to nAn, nBn; see Fig. 4; VCC = 2.3 V to 2.7 V | 7 |
| disable time | tdis | 1.5 | 3.9 | 10 | ns | Tamb = -40 °C to +125 °C; nOE to nAn, nBn; see Fig. 4; VCC = 2.7 V | 7 |
| disable time | tdis | 1.7 | 3.6 | 9 | ns | Tamb = -40 °C to +125 °C; nOE to nAn, nBn; see Fig. 4; VCC = 3.0 V to 3.6 V | 7 |
| output skew time | tsk(o) | 1.5 | ns | Tamb = -40 °C to +125 °C | 7 |
CAD (KiCad official)
- Symbol:
74LVC245ABQ - Footprint:
Package_DFN_QFN:DHVQFN-20-1EP_2.5x4.5mm_P0.5mm_EP1x3mm - 3D model: DHVQFN-20(2.5x4.5), 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:
74lvc245abq-etched.step/74lvc245abq-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74lvc245abq.step/74lvc245abq.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (16 pp, sha256
e87a15c19e7cc6c5, retrieved 2026-10-17, tier: lcsc) - 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).