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SN74LVC4245APWR
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Texas Instruments Buffer/Driver/Transceiver, TSSOP-24. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+68@@ -0,0 +1,68 @@+# SN74LVC4245APWR++**Texas Instruments** · Buffer/Driver/Transceiver · TSSOP-24++SN74LVC4245APWR from Texas Instruments, in a TSSOP-24. 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 | Power supply for A side. Recommended 4.5V to 5.5V; absolute max 6.5V. Bypass with 100nF close to the pin. |+| 2 | DIR | input | Direction control input, referenced to VCCA. DIR=H drives A→B; DIR=L drives B→A. VIH≥2V, VIL≤0.8V. |+| 3 | A1 | bidirectional | A-port transceiver I/O bit 1, referenced to VCCA. Drives ±24mA at 5V VCCA; input tolerant to VCCA+0.5V. |+| 4 | A2 | bidirectional | A-port transceiver I/O bit 2, referenced to VCCA. |+| 5 | A3 | bidirectional | A-port transceiver I/O bit 3, referenced to VCCA. |+| 6 | A4 | bidirectional | A-port transceiver I/O bit 4, referenced to VCCA. |+| 7 | A5 | bidirectional | A-port transceiver I/O bit 5, referenced to VCCA. |+| 8 | A6 | bidirectional | A-port transceiver I/O bit 6, referenced to VCCA. |+| 9 | A7 | bidirectional | A-port transceiver I/O bit 7, referenced to VCCA. |+| 10 | A8 | bidirectional | A-port transceiver I/O bit 8, referenced to VCCA. |+| 11 | GND | power_in | Device ground. Tie all GND pins (11, 12, 13) to a common low-impedance ground plane. |+| 12 | GND | power_in | Device ground. |+| 13 | GND | power_in | Device ground. |+| 14 | B8 | bidirectional | B-port transceiver I/O bit 8, referenced to VCCB. Drives ±24mA at VCCB=3V; input tolerant to VCCB+0.5V. |+| 15 | B7 | bidirectional | B-port transceiver I/O bit 7, referenced to VCCB. |+| 16 | B6 | bidirectional | B-port transceiver I/O bit 6, referenced to VCCB. |+| 17 | B5 | bidirectional | B-port transceiver I/O bit 5, referenced to VCCB. |+| 18 | B4 | bidirectional | B-port transceiver I/O bit 4, referenced to VCCB. |+| 19 | B3 | bidirectional | B-port transceiver I/O bit 3, referenced to VCCB. |+| 20 | B2 | bidirectional | B-port transceiver I/O bit 2, referenced to VCCB. |+| 21 | B1 | bidirectional | B-port transceiver I/O bit 1, referenced to VCCB. |+| 22 | OE | input | Active-low output-enable input, referenced to VCCA. OE=L enables the transceiver outputs; OE=H places both A- and B-port I/Os in high-impedance. |+| 23 | VCCB | power_in | Power supply for B side. Pin diagram shows 'NC,VCCB' - Pin Functions table lists this pin as VCCB (2.7V to 3.6V recommended); it may be left NC only if pin 24 is used as the sole VCCB tie. |+| 24 | VCCB | power_in | Power supply for B side. Recommended 2.7V to 3.6V; absolute max 4.6V. Bypass with 100nF close to the pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TSSOP-24 |+| Category | Logic |+| Pins | 24 |++## Ordering variants++- `SN74LVC4245APWRPW`+- `SN74LVC4245APWRPWR`+- `SN74LVC4245APWRDB`+- `SN74LVC4245APWRDBR`+- `SN74LVC4245APWRDW`+- `SN74LVC4245APWRDWR`++## CAD (KiCad official)++- Symbol: `SN74LVC4245APWR`+- Footprint: `Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm`+- 3D model: TSSOP-24 (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/sn74lvc4245a.pdf) (28 pp, sha256 `29a63cd196f43f2b`, 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/sn74lvc4245apwr-datasheet.pdf)
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