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SN65HVD11 RS-485 Transceiver

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by Ray

3.3 V half-duplex RS-485 transceiver with slew-rate limiting for lower emissions.

rs-485transceiverinterface3.3vslew-limitedtisoic-8
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Contents

README

markdown

SN65HVD11

Texas Instruments · RS-485 Transceiver · SOIC-8

The SN65HVD11 is a 3.3 V half-duplex RS-485 transceiver with a driver and receiver in one package. Its slew-rate-limited driver reduces electromagnetic emissions and reflections on longer cables, and it supports up to 256 nodes on a bus. It is used for industrial multidrop networks like Modbus.

Pinout

Pin Name Type Function
1 R output Receive data output. Digital output presenting the recovered logic level from the differential A/B bus inputs. High-impedance when RE is high (receiver disabled).
2 RE input Active-low receiver enable. Drive low to enable the receiver output R; drive high to place R in high-impedance and (together with DE low) enter low-current standby mode (typ 1 uA).
3 DE input Active-high driver enable. Drive high to enable the differential bus driver on A/B; drive low to place the driver outputs in high-impedance.
4 D input Driver data input. TTL/CMOS-compatible logic input whose state is transmitted to the differential A/B bus when DE is asserted high.
5 GND power_in Local device ground / reference potential for logic and bus signals.
6 A bidirectional Non-inverting RS-485 differential bus I/O. Driver output or receiver input, complementary to B. Withstands -7 V to 12 V common-mode; ESD protected to +/-16 kV HBM.
7 B bidirectional Inverting RS-485 differential bus I/O. Driver output or receiver input, complementary to A. Withstands -7 V to 12 V common-mode; ESD protected to +/-16 kV HBM.
8 VCC power_in Supply voltage input, 3 V to 3.6 V (3.3-V nominal). Bypass locally with a decoupling capacitor to GND.

Key specifications

Parameter Value
Type Half-duplex RS-485 transceiver
Supply voltage 3.0 V to 3.6 V
Data rate Up to 10 Mbps
Driver Slew-rate limited
Bus loading Up to 256 nodes
Enables Separate driver and receiver
Operating temperature -40 C to 85 C

Ordering variants

Same part, different packaging or reel option.

  • SN65HVD11D
  • SN65HVD11DR
  • SN65HVD11P

CAD (KiCad official)

  • Symbol: sn65hvd11.kicad_sym
  • Footprint: sn65hvd11.kicad_mod
  • 3D model: SOIC-8 body from KiCad Package_SO/SOIC-8_3.9x4.9mm_P1.27mm.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (37 pp, sha256 c180625a50ecb754, 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