SN74LVC4245ADBR

@@ -0,0 +1,78 @@+# SN74LVC4245ADBR++**Texas Instruments** · Buffer/Driver/Transceiver · SSOP-24-208mil++SN74LVC4245ADBR from Texas Instruments, in a SSOP-24-208mil. 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 | VCCA | power_in | A-port supply rail (typically 5 V, up to 5.5 V). Also powers the DIR and OE control circuitry; determines VIH/VIL thresholds of the control inputs. |+| 2 | DIR | input | Direction control input, referenced to VCCA. DIR = L transmits B->A; DIR = H transmits A->B (when OE = L). |+| 3 | A1 | bidirectional | A-port channel 1 data I/O, referenced to VCCA (0 to VCCA). Drives up to +/-24 mA at VCCA = 4.5-5.5 V. |+| 4 | A2 | bidirectional | A-port channel 2 data I/O, referenced to VCCA. |+| 5 | A3 | bidirectional | A-port channel 3 data I/O, referenced to VCCA. |+| 6 | A4 | bidirectional | A-port channel 4 data I/O, referenced to VCCA. |+| 7 | A5 | bidirectional | A-port channel 5 data I/O, referenced to VCCA. |+| 8 | A6 | bidirectional | A-port channel 6 data I/O, referenced to VCCA. |+| 9 | A7 | bidirectional | A-port channel 7 data I/O, referenced to VCCA. |+| 10 | A8 | bidirectional | A-port channel 8 data I/O, referenced to VCCA. |+| 11 | GND | power_in | Device ground reference. Continuous current per GND pin +/-100 mA max; tie all GND pins to the board ground plane. |+| 12 | GND | power_in | Device ground reference (second GND pin). |+| 13 | GND | power_in | Device ground reference (third GND pin). |+| 14 | B8 | bidirectional | B-port channel 8 data I/O, referenced to VCCB (2.7-3.6 V). |+| 15 | B7 | bidirectional | B-port channel 7 data I/O, referenced to VCCB. |+| 16 | B6 | bidirectional | B-port channel 6 data I/O, referenced to VCCB. |+| 17 | B5 | bidirectional | B-port channel 5 data I/O, referenced to VCCB. |+| 18 | B4 | bidirectional | B-port channel 4 data I/O, referenced to VCCB. |+| 19 | B3 | bidirectional | B-port channel 3 data I/O, referenced to VCCB. |+| 20 | B2 | bidirectional | B-port channel 2 data I/O, referenced to VCCB. |+| 21 | B1 | bidirectional | B-port channel 1 data I/O, referenced to VCCB. |+| 22 | OE | input | Active-low output enable, referenced to VCCA. OE = L enables the transceivers per the DIR setting; OE = H puts both A and B ports in high-impedance (isolation). Tie to VCCA through a pull-up so it ramps with VCCA. |+| 23 | VCCB | power_in | B-port supply rail (2.7 V to 3.6 V). Sets the B-port I/O logic level and drive strength (up to +/-24 mA at 3 V, +/-12 mA at 2.7 V). |+| 24 | VCCB | power_in | B-port supply rail (second VCCB pin, tie to pin 23). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SSOP-24-208mil |+| Category | Logic |+| Pins | 24 |++## Ordering variants++- `SN74LVC4245ADBRDBR`+- `SN74LVC4245ADBRDBRE4`+- `SN74LVC4245ADBRDBRG4`+- `SN74LVC4245ADBRDW`+- `SN74LVC4245ADBRDWE4`+- `SN74LVC4245ADBRDWG4`+- `SN74LVC4245ADBRDWR`+- `SN74LVC4245ADBRDWRE4`+- `SN74LVC4245ADBRDWRG4`+- `SN74LVC4245ADBRPW`+- `SN74LVC4245ADBRPWG4`+- `SN74LVC4245ADBRPWR`+- `SN74LVC4245ADBRPWRE4`+- `SN74LVC4245ADBRPWRG4`+- `SN74LVC4245ADBRPWT`+- `SN74LVC4245ADBRPWTG4`++## CAD (KiCad official)++- Symbol: `SN74LVC4245ADBR`+- Footprint: `Package_SO:SSOP-24_5.3x8.2mm_P0.65mm`+- 3D model: SSOP-24-208mil (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/sn74lvc4245adbr.pdf) (17 pp, sha256 `4b1df8bf97da30c0`, retrieved 2026-08-17, tier: manufacturer)+- **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).++[Datasheet PDF](docs/sn74lvc4245adbr-datasheet.pdf)

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