component
SN65HVD1781DR
Public Made by Adomby adom
Texas Instruments RS-485 / RS-422 ICs, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
← Commit history
README.md+14@@ -38,6 +38,20 @@ SN65HVD1781DR from Texas Instruments, in a SOIC-8. Pinout and pin descriptions e - Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm` - 3D model: SOIC-8 (KiCad packages3D, STEP) +## 3D model downloads++Two STEP files. Same geometry, different body top:++| File | Size | Use it when |+|---|---|---|+| [`sn65hvd1781dr.step`](sn65hvd1781dr.step) | 122 KB | You want the bare part, or you mark your own boards. |+| [`sn65hvd1781dr-etched.step`](sn65hvd1781dr-etched.step) | 2.4 MB | You want the part with `SN65HVD1781DR` already on it. |++The marking in the etched file is real recessed geometry cut into the solid, not a+texture or a decal: 608 faces against 147 in the bare model. It+survives export, section views, and rendering in any CAD tool, and it drops straight+into KiCad or Fusion with no extra setup.+ ## Provenance Data extracted from the manufacturer datasheet, not a distributor listing:
package.json+1−1@@ -1,6 +1,6 @@ { "slug": "sn65hvd1781dr",- "version": "0.1.0",+ "version": "0.2.0", "type": "component", "description": "Texas Instruments RS-485 / RS-422 ICs, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.", "tags": [
page.json+11−11@@ -4,7 +4,7 @@ "slug": "sn65hvd1781dr", "title": "SN65HVD1781DR", "brief": "Texas Instruments RS-485 / RS-422 ICs, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.",- "version": "0.1.0",+ "version": "0.2.0", "license": "CC-BY-SA-4.0", "tags": [ "component",@@ -35,7 +35,7 @@ "number": "1", "name": "R", "type": "output",- "description": "Receiver data output. CMOS-level output presenting the demodulated state of the differential bus (A vs B). Drives up to \u00b18 mA (VOH \u2265 2.4 V, VOL \u2264 0.4 V)."+ "description": "Receiver data output. CMOS-level output presenting the demodulated state of the differential bus (A vs B). Drives up to ±8 mA (VOH ≥ 2.4 V, VOL ≤ 0.4 V)." }, { "number": "2",@@ -47,13 +47,13 @@ "number": "3", "name": "DE", "type": "input",- "description": "Driver enable, active high. Drive high to enable the differential driver (A/B); drive low to place the driver outputs in high-impedance. Combine with RE=high for standby/low-power mode (ICC \u2264 1 \u00b5A)."+ "description": "Driver enable, active high. Drive high to enable the differential driver (A/B); drive low to place the driver outputs in high-impedance. Combine with RE=high for standby/low-power mode (ICC ≤ 1 µA)." }, { "number": "4", "name": "D", "type": "input",- "description": "Driver data input. CMOS logic input whose state (with DE=high) sets the differential polarity between bus pins A and B. VIH \u2265 2 V, VIL \u2264 0.8 V."+ "description": "Driver data input. CMOS logic input whose state (with DE=high) sets the differential polarity between bus pins A and B. VIH ≥ 2 V, VIL ≤ 0.8 V." }, { "number": "5",@@ -65,19 +65,19 @@ "number": "6", "name": "A", "type": "bidirectional",- "description": "Non-inverting RS-485 bus I/O. Driver output or receiver input, complementary to B. Fault-protected to \u00b170 V and \u00b116 kV HBM ESD; withstands -7 V to +12 V common-mode in normal operation."+ "description": "Non-inverting RS-485 bus I/O. Driver output or receiver input, complementary to B. Fault-protected to ±70 V and ±16 kV HBM ESD; withstands -7 V to +12 V common-mode in normal operation." }, { "number": "7", "name": "B", "type": "bidirectional",- "description": "Inverting RS-485 bus I/O. Driver output or receiver input, complementary to A. Fault-protected to \u00b170 V and \u00b116 kV HBM ESD; withstands -7 V to +12 V common-mode in normal operation."+ "description": "Inverting RS-485 bus I/O. Driver output or receiver input, complementary to A. Fault-protected to ±70 V and ±16 kV HBM ESD; withstands -7 V to +12 V common-mode in normal operation." }, { "number": "8", "name": "VCC", "type": "power_in",- "description": "Positive supply. 3.15 V to 5.5 V recommended operating range (4.5 V to 5.5 V per Pin Functions table for full RS-485 compliance). Bypass locally with a 0.1 \u00b5F ceramic capacitor to GND."+ "description": "Positive supply. 3.15 V to 5.5 V recommended operating range (4.5 V to 5.5 V per Pin Functions table for full RS-485 compliance). Bypass locally with a 0.1 µF ceramic capacitor to GND." } ], "provenance": {@@ -151,9 +151,9 @@ "docs/hero.png", "docs/sn65hvd1781dr-datasheet.pdf", "viewers/symbol.html",- "viewers/footprint.html"+ "viewers/footprint.html",+ "pads.json" ],- "visibility": {- "public": true- }+ "visibility": "public",+ "description": "Texas Instruments RS-485 / RS-422 ICs, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D." }