Specifications
| Type | Description |
|---|---|
| Part Number | SN65HVD72 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | SOIC-8 4.91 mm x 3.90 mm; VSSOP-8 3.00 mm x 3.00 mm; VSON-8 3.00 mm x 3.00 mm |
| Interface standard | RS-485; half-duplex two-wire bus communication |
| Supply voltage | 3.3 V nominal; single power supply operation |
| Supply voltage pin range | 3 V to 3.6 V at VCC |
| Signaling rate | Up to 250 kbps |
| Duplex mode | Half-duplex |
| Driver enable input | DE, active high |
| Receiver enable input | RE, active low |
| Supported nodes | 213 nodes |
| Operating temperature range | -40°C to 125°C |
| Receiver hysteresis | 80 mV for noise rejection |
| Standby supply current | < 2 µA in low standby mode |
| Quiescent supply current | < 1 mA during operation |
| Logic input tolerance | 5 V tolerant; compatible with 3.3-V or 5-V controllers |
| Bus I/O HBM protection | > ±15 kV |
| IEC 61000-4-2 contact discharge protection | > ±12 kV |
| IEC 61000-4-4 fast transient burst protection | > ±4 kV |
| Absolute maximum supply voltage | -0.5 V to 5 V |
| Absolute maximum A or B input voltage | -13 V to 16.5 V |
| Absolute maximum logic pin voltage | -0.3 V to 5.7 V at D, DE, or RE |
| Absolute maximum transient pulse voltage | -100 V to 100 V at A and B through 100 ohm |
| Receiver output current | -24 mA to 24 mA absolute maximum |
| Junction temperature | 170°C max |
| Storage temperature | -65°C to 150°C |
| HBM ESD rating, all pins | ±8000 V per ANSI/ESDA/JEDEC JS-001 |
| CDM ESD rating, all pins | ±1500 V per JEDEC JESD22-C101 or ANSI/ESDA/JEDEC JS-002 |
| Machine model ESD rating, all pins | ±300 V per JEDEC Standard 22, Test Method A115 |
| IEC 61000-4-2 air-gap discharge ESD | ±12000 V at bus pins and GND |
| IEC 61000-4-2 contact discharge ESD | ±12000 V at bus pins and GND |
| IEC 61000-4-4 EFT rating | ±4000 V at bus pins and GND |
| IEC 60749-26 HBM ESD | ±15000 V at bus pins and GND |
| Pin 1 function | R, receive data output |
| Pin 2 function | RE, active-low receiver enable |
| Pin 3 function | DE, active-high driver enable |
| Pin 4 function | D, driver data input |
| Pin 5 function | GND, local device ground |
| Pin 6 function | A, driver output or receiver input complementary to B |
| Pin 7 function | B, driver output or receiver input complementary to A |
| Pin 8 function | VCC, supply |
| Datasheet Status | request_only |
Product Overview
The SN65HVD72 is a Texas Instruments 3.3-V RS-485 transceiver in the Signal_Chain category. It is intended for half-duplex two-wire bus communication and supports up to 250 kbps signaling. The device operates from a single 3.3 V nominal supply, with the VCC pin specified for a 3 V to 3.6 V range.
The interface uses separate logic pins for receive output, driver input, receiver enable, and driver enable. Pin functions include R on pin 1, active-low RE on pin 2, active-high DE on pin 3, D on pin 4, GND on pin 5, A and B bus terminals on pins 6 and 7, and VCC on pin 8. Logic inputs are 5 V tolerant for use with 3.3-V or 5-V controllers.
Package options include SOIC-8, VSSOP-8, and VSON-8 formats. Electrical limits include -13 V to 16.5 V absolute maximum voltage on A or B inputs, -0.3 V to 5.7 V on logic pins, and -65°C to 150°C storage temperature. Protection ratings include bus I/O HBM greater than ±15 kV, IEC 61000-4-2 contact discharge greater than ±12 kV, and IEC 61000-4-4 EFT greater than ±4 kV.
Key Features
- RS-485 interface for half-duplex two-wire bus communication
- Single 3.3 V nominal supply operation
- VCC operating range from 3 V to 3.6 V
- Supports signaling rates up to 250 kbps
- Supports up to 213 nodes on the bus
- Active-high DE and active-low RE control inputs
- 80 mV receiver hysteresis for noise rejection
- Standby supply current below 2 µA
- Quiescent supply current below 1 mA during operation
- 5 V tolerant logic inputs for controller compatibility
- Bus I/O HBM protection greater than ±15 kV
- Extended -40°C to 125°C operating temperature range
Typical Applications
- Half-duplex RS-485 networks
- Two-wire bus communication
- 3.3 V controller interfaces
- 5 V controller logic interfaces
- Extended industrial temperature systems
- Multi-node RS-485 bus designs
- Low-standby-current communication nodes
- Protected bus I/O designs
Procurement Notes
When requesting a quote for SN65HVD72, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What interface standard does the SN65HVD72 support?
The SN65HVD72 supports RS-485 communication in a half-duplex two-wire bus configuration. Its device comparison data lists half-duplex operation and a signaling rate of up to 250 kbps.
What supply range is specified for the VCC pin?
The device is described as a 3.3 V nominal transceiver, and the VCC pin function specifies a supply voltage range from 3 V to 3.6 V for operation.
Which packages are listed for the SN65HVD72?
The listed package options are SOIC-8 measuring 4.91 mm x 3.90 mm, VSSOP-8 measuring 3.00 mm x 3.00 mm, and VSON-8 measuring 3.00 mm x 3.00 mm.
What protection ratings are specified for the bus pins?
The extracted ratings include bus I/O HBM protection greater than ±15 kV, IEC 61000-4-2 contact discharge protection greater than ±12 kV, and IEC 61000-4-4 fast transient burst protection greater than ±4 kV.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.