component
SN74ALS245ADBR
Public Made by Adomby adom
Texas Instruments Buffers, Drivers, Receivers, Transceivers, SSOP-20-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SN74ALS245ADBR
Texas Instruments · Buffers, Drivers, Receivers, Transceivers · SSOP-20-208mil
SN74ALS245ADBR from Texas Instruments, in a SSOP-20-208mil. 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 selects the transfer direction: low routes B data to the A bus, high routes A data to the B bus (per the function table). |
| 2 | A1 | bidirectional | A-bus 3-state input/output port 1; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 3 | A2 | bidirectional | A-bus 3-state input/output port 2; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 4 | A3 | bidirectional | A-bus 3-state input/output port 3; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 5 | A4 | bidirectional | A-bus 3-state input/output port 4; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 6 | A5 | bidirectional | A-bus 3-state input/output port 5; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 7 | A6 | bidirectional | A-bus 3-state input/output port 6; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 8 | A7 | bidirectional | A-bus 3-state input/output port 7; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 9 | A8 | bidirectional | A-bus 3-state input/output port 8; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 10 | GND | power_in | Ground reference for the device; unused inputs must be held at VCC or GND for proper operation. |
| 11 | B8 | bidirectional | B-bus 3-state input/output port 8; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 12 | B7 | bidirectional | B-bus 3-state input/output port 7; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 13 | B6 | bidirectional | B-bus 3-state input/output port 6; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 14 | B5 | bidirectional | B-bus 3-state input/output port 5; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 15 | B4 | bidirectional | B-bus 3-state input/output port 4; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 16 | B3 | bidirectional | B-bus 3-state input/output port 3; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 17 | B2 | bidirectional | B-bus 3-state input/output port 2; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 18 | B1 | bidirectional | B-bus 3-state input/output port 1; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 19 | OE | input | Output-enable input; when high the device is disabled so the A and B buses are isolated, and it must be low to enable transfer. |
| 20 | VCC | power_in | Supply voltage, recommended 4.5 V to 5.5 V (nominal 5 V); absolute maximum 7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-20-208mil |
| Category | Logic |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
SN74ALS245ADBR - Footprint:
Package_SO:SSOP-20_5.3x7.2mm_P0.65mm - 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
- 3D model files:
sn74als245adbr-etched.step/sn74als245adbr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74als245adbr.step/sn74als245adbr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (24 pp, sha256
d040eb63af027918, retrieved 2026-10-11, 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).
# SN74ALS245ADBR
**Texas Instruments** · Buffers, Drivers, Receivers, Transceivers · SSOP-20-208mil
SN74ALS245ADBR from Texas Instruments, in a SSOP-20-208mil. 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 selects the transfer direction: low routes B data to the A bus, high routes A data to the B bus (per the function table). |
| 2 | A1 | bidirectional | A-bus 3-state input/output port 1; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 3 | A2 | bidirectional | A-bus 3-state input/output port 2; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 4 | A3 | bidirectional | A-bus 3-state input/output port 3; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 5 | A4 | bidirectional | A-bus 3-state input/output port 4; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 6 | A5 | bidirectional | A-bus 3-state input/output port 5; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 7 | A6 | bidirectional | A-bus 3-state input/output port 6; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 8 | A7 | bidirectional | A-bus 3-state input/output port 7; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 9 | A8 | bidirectional | A-bus 3-state input/output port 8; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 10 | GND | power_in | Ground reference for the device; unused inputs must be held at VCC or GND for proper operation. |
| 11 | B8 | bidirectional | B-bus 3-state input/output port 8; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 12 | B7 | bidirectional | B-bus 3-state input/output port 7; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 13 | B6 | bidirectional | B-bus 3-state input/output port 6; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 14 | B5 | bidirectional | B-bus 3-state input/output port 5; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 15 | B4 | bidirectional | B-bus 3-state input/output port 4; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 16 | B3 | bidirectional | B-bus 3-state input/output port 3; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 17 | B2 | bidirectional | B-bus 3-state input/output port 2; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 18 | B1 | bidirectional | B-bus 3-state input/output port 1; pnp inputs reduce dc loading and the outputs drive bus lines directly. |
| 19 | OE | input | Output-enable input; when high the device is disabled so the A and B buses are isolated, and it must be low to enable transfer. |
| 20 | VCC | power_in | Supply voltage, recommended 4.5 V to 5.5 V (nominal 5 V); absolute maximum 7 V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SSOP-20-208mil |
| Category | Logic |
| Pins | 20 |
## CAD (KiCad official)
- Symbol: `SN74ALS245ADBR`
- Footprint: `Package_SO:SSOP-20_5.3x7.2mm_P0.65mm`
- 3D model: SSOP-20-208mil (KiCad packages3D, STEP)
- 3D model files: `sn74als245adbr-etched.step` / `sn74als245adbr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sn74als245adbr.step` / `sn74als245adbr.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/sn74als245a) (24 pp, sha256 `d040eb63af027918`, retrieved 2026-10-11, 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/sn74als245adbr-datasheet.pdf)