component
74HC245WS20ARBQ
Public Made by Adomby adom
GR Buffers, Drivers, Receivers, Transceivers, SOP-20-300mil. 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
markdown74HC245WS20ARBQ
GR · Buffers, Drivers, Receivers, Transceivers · SOP-20-300mil
74HC245WS20ARBQ from GR, in a SOP-20-300mil. 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: with OE low, DIR low selects B-to-A transfer and DIR high selects A-to-B transfer. |
| 2 | A1 | bidirectional | 3-state input/output on the A bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 3 | A2 | bidirectional | 3-state input/output on the A bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 4 | A3 | bidirectional | 3-state input/output on the A bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 5 | A4 | bidirectional | 3-state input/output on the A bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 6 | A5 | bidirectional | 3-state input/output on the A bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 7 | A6 | bidirectional | 3-state input/output on the A bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 8 | A7 | bidirectional | 3-state input/output on the A bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 9 | A8 | bidirectional | 3-state input/output on the A bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 10 | GND | power_in | Ground reference; all device voltages are referenced to GND (0 V). |
| 11 | B8 | bidirectional | 3-state input/output on the B bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 12 | B7 | bidirectional | 3-state input/output on the B bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 13 | B6 | bidirectional | 3-state input/output on the B bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 14 | B5 | bidirectional | 3-state input/output on the B bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 15 | B4 | bidirectional | 3-state input/output on the B bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 16 | B3 | bidirectional | 3-state input/output on the B bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 17 | B2 | bidirectional | 3-state input/output on the B bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 18 | B1 | bidirectional | 3-state input/output on the B bus; output drive is ±6mA at 5V and the pin is active only when OE is low. |
| 19 | OE | input | Active-low output enable; when high, the device is in isolation and both buses are effectively disconnected. |
| 20 | VCC | power_in | Supply voltage; recommended operating range is 2 V to 6 V, with an absolute maximum of 7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | GR |
| Package | SOP-20-300mil |
| Category | Logic |
| Pins | 20 |
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 | 7 | V | 3 | ||
| Power Dissipation | PD | 500 | mW | 3 | |||
| Junction Temperature | TJ | 125 | ℃ | 3 | |||
| Operating Temperature | TOP | 0 | 70 | ℃ | 3 | ||
| Supply Voltage | VCC | 2 | 5 | 6 | V | 4 | |
| High Level Input Voltage | VIH | 1.5 | V | VCC=2V | 4 | ||
| High Level Input Voltage | VIH | 3.15 | V | VCC=4.5V | 4 | ||
| High Level Input Voltage | VIH | 4.2 | V | VCC=6V | 4 | ||
| Low Level Input Voltage | VIL | 0.5 | V | VCC=2V | 4 | ||
| Low Level Input Voltage | VIL | 1.35 | V | VCC=4.5V | 4 | ||
| Low Level Input Voltage | VIL | 1.8 | V | VCC=6V | 4 | ||
| Input voltage | VI | 0 | V | 4 | |||
| High Level Output Voltage | VOH | 1.9 | V | VCC=2V,IO=-20uA | 4 | ||
| High Level Output Voltage | VOH | 4.4 | V | VCC=4.5V,IO=-20uA | 4 | ||
| High Level Output Voltage | VOH | 5.9 | V | VCC=6V,IO=-20uA | 4 | ||
| High Level Output Voltage | VOH | 4 | V | VCC=4.5V,IO=-6mA | 4 | ||
| High Level Output Voltage | VOH | 5.5 | V | VCC=6V,IO=-7.8mA | 4 | ||
| Low Level Output Voltage | VOL | 0.1 | V | VCC=2V,IO=20uA | 4 | ||
| Low Level Output Voltage | VOL | 0.3 | V | VCC=4.5V,IO=6mA | 4 | ||
| Input Leakage Current | II | -1 | 0 | 1 | uA | VCC=6V,VI=VCC or GND | 4 |
| Off-State (High Impedance State) Output Current (A or B) | IOZ | -5 | 0 | 5 | uA | VCC=6V,VO=VCC or GND | 4 |
| Quiescent Supply Current | ICC | 0 | 10 | uA | VCC=6V,VI=VCC/GND | 4 |
CAD (KiCad official)
- Symbol:
74HC245WS20ARBQ - Footprint:
Package_SO:SOP-20_7.5x12.8mm_P1.27mm - 3D model: SOP-20-300mil, 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:
74hc245ws20arbq-etched.step/74hc245ws20arbq-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74hc245ws20arbq.step/74hc245ws20arbq.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: GR datasheet (9 pp, sha256
790f2ed0ddfb2542, retrieved 2026-10-18, 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).