SN65HVD75

@@ -0,0 +1,52 @@+# SN65HVD75++**Texas Instruments** · RS-485 transceiver · SOIC-8++3.3 V half-duplex RS-485 transceiver in a SOIC-8 package, rated for signaling up to 20 Mbps with IEC 61000-4-2 ESD protection on the bus pins. A logic-side D/R pair plus independent RE (active-low) and DE (active-high) enables let one MCU UART drive and listen on a shared A/B differential bus with -7 to +12 V common-mode range. The default long-wire multidrop link for industrial sensors and Modbus. Terminate the bus with 120 ohm at each end.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | R | output | Receive data output. Logic-level output from the differential receiver, driven from bus pins A and B. High when A-B > VIT+ (~-20 mV), low when A-B < VIT- (~-150 mV), with 80 mV typical hysteresis. |+| 2 | RE | input | Active-low receiver enable. Drive low to enable the receiver output R; drive high to place R in high-impedance. 5-V tolerant logic input. |+| 3 | DE | input | Active-high driver enable. Drive high to enable the differential driver outputs on A and B; drive low to place them in high-impedance. 5-V tolerant logic input. |+| 4 | D | input | Driver data input. Logic-level input that sets the differential state of bus pins A and B when the driver is enabled (DE = high). 5-V tolerant. |+| 5 | GND | power_in | Local device ground (0 V reference). |+| 6 | A | bidirectional | Non-inverting RS-485 bus I/O. Driver output (complementary to B) when DE is high; receiver input (complementary to B) when RE is low. Rated for -7 V to +12 V common-mode with >=12 kV IEC 61000-4-2 contact ESD. |+| 7 | B | bidirectional | Inverting RS-485 bus I/O. Driver output (complementary to A) when DE is high; receiver input (complementary to A) when RE is low. Rated for -7 V to +12 V common-mode with >=12 kV IEC 61000-4-2 contact ESD. |+| 8 | VCC | power_in | Supply voltage input, 3.0 V to 3.6 V (3.3 V nominal). Bypass locally with a 100 nF ceramic capacitor to GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | Half-duplex RS-485 transceiver |+| Data rate | up to 20 Mbps |+| Supply voltage | 3.0-3.6 V (3.3 V nominal) |+| Bus | A / B differential, -7 to +12 V common-mode |+| ESD | >=12 kV IEC 61000-4-2 (contact) |+| Enables | RE (active-low), DE (active-high) |+| Package | SOIC-8 |+| Body (L×W×H) | 4.9 × 3.9 × 1.75 mm |++## Ordering variants++- `SN65HVD75D (SOIC-8, tube)`+- `SN65HVD75DR (SOIC-8, tape & reel)`++## CAD (KiCad official)++- Symbol: `SN65HVD75 (Adom-authored grouped symbol via adom-symbol; not in KiCad libs)`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/sn65hvd75.pdf) (47 pp, sha256 `b46f5803fa8302f9`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude) — every pin and dimension is cited to a datasheet page; refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/sn65hvd75-datasheet.pdf)

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