component
THVD1452DR
Public Made by Adomby adom
Texas Instruments RS-485/RS-422 ICs, SOIC-14. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTHVD1452DR
Texas Instruments · RS-485/RS-422 ICs · SOIC-14
THVD1452DR from Texas Instruments, in a SOIC-14. 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 | NC | unconnected | No internal connection. Leave floating or tie to ground; no electrical function. |
| 2 | R | output | Receiver data output. Digital CMOS output that reflects the recovered logic state of the receiver differential inputs A/B. VOH ≈ VCC − 0.2 V, VOL ≈ 0.2 V. |
| 3 | RE | input | Receiver enable, active low. Digital input with an internal 2-MΩ pull-up; drive low to enable the receiver output R, high (or leave open) to place R in high-impedance. |
| 4 | DE | input | Driver enable, active high. Digital input with an internal 2-MΩ pull-down; drive high to enable the differential driver outputs Y/Z, low (or leave open) to place them in high-impedance. |
| 5 | D | input | Driver data input. Digital input that sets the polarity of the differential driver outputs Y/Z when DE is asserted high. |
| 6 | GND | power_in | Device ground reference. Pins 6 and 7 are internally connected; both should be tied to the system ground plane. |
| 7 | GND | power_in | Device ground reference. Internally connected to pin 6; both should be tied to the system ground plane. |
| 8 | NC | unconnected | No internal connection. Leave floating or tie to ground; no electrical function. |
| 9 | Y | output | Non-inverting differential driver output (RS-485/RS-422 bus output, complementary to Z). Drives the transmit pair when DE is high; high-impedance otherwise. Withstands −18 V to +18 V bus voltage. |
| 10 | Z | output | Inverting differential driver output (RS-485/RS-422 bus output, complementary to Y). Drives the transmit pair when DE is high; high-impedance otherwise. Withstands −18 V to +18 V bus voltage. |
| 11 | B | input | Inverting differential receiver input (RS-485/RS-422 bus input, complementary to A). Presents 1/8 unit load allowing up to 256 nodes on the bus; withstands −18 V to +18 V. |
| 12 | A | input | Non-inverting differential receiver input (RS-485/RS-422 bus input, complementary to B). Presents 1/8 unit load allowing up to 256 nodes on the bus; withstands −18 V to +18 V. |
| 13 | VCC | power_in | Supply voltage, 3.0 V to 5.5 V (3.3-V to 5-V nominal). Pins 13 and 14 are internally connected; bypass with a local decoupling capacitor to GND. |
| 14 | VCC | power_in | Supply voltage, 3.0 V to 5.5 V (3.3-V to 5-V nominal). Internally connected to pin 13; bypass with a local decoupling capacitor to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Comm/UART |
| Pins | 14 |
Ordering variants
Same part, different packaging or reel option.
THVD1452DRTHVD1452DRDTHVD1452DRDGSRTHVD1452DRDGS
CAD (KiCad official)
- Symbol:
THVD1452DR - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files:
thvd1452dr-etched.step/thvd1452dr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);thvd1452dr.step/thvd1452dr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (54 pp, sha256
58ecc4cc07dd1d32, 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).