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Texas Instruments THVD1452DGSR
- Part No.:
- THVD1452DGSR
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
THVD1452DGSR.pdf
- Description:
- IC TRANSCEIVER FULL 1/1 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,697
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Product details
Overview
THVD1452DGSR from Texas Instruments is a full-duplex RS-485/RS-422 transceiver with active-high driver enable (DE) and active-low receiver enable (RE), 50-Mbps signaling rate, ±18-kV IEC 61000-4-2 contact ESD protection on bus pins, extended common-mode range (±15 V), and operation from 3.3 V to 5.5 V supply. It enables robust industrial communication in motor drives and factory automation systems.
For engineers reviewing the THVD1452DGSR datasheet, THVD1452DGSR pinout, THVD1452DGSR application, or THVD1452DGSR equivalent, key selection criteria include full-duplex timing performance, fail-safe receiver behavior under open/short/idle bus conditions, thermal shutdown at 170°C, low-power standby (<1 µA), and compatibility with PROFIBUS-compliant differential output voltage (≥2.1 V at 5 V).
Technical Context
The THVD1452DGSR implements independent driver and receiver channels with separate DE and RE control logic, supporting simultaneous bidirectional data flow over A/B and Y/Z differential pairs. Its receiver features large hysteresis (30 mV) and failsafe operation across open, short, and idle bus states.
It operates across –40°C to 125°C ambient temperature, supports up to 256 nodes via 1/8-unit-load bus loading, and integrates internal 2-MΩ pull-down on DE and pull-up on RE for deterministic power-up behavior without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Signaling Rate | Up to 50 Mbps - enables high-speed industrial Ethernet backhaul and real-time motion control loops |
| Differential Output Voltage (VOD) | Min 2.1 V at 5 V supply - meets PROFIBUS compliance for noise-immune operation over long cables |
| Bus ESD Protection | ±18 kV IEC 61000-4-2 contact discharge - eliminates need for external TVS diodes in harsh factory environments |
| Common-Mode Range | ±15 V - supports multi-point networks with ground potential differences across distributed nodes |
| Supply Voltage | 3.3 V to 5.5 V - interoperable with both legacy 5-V and modern 3.3-V controller I/O domains |
| Standby Current | <1 µA - enables ultra-low-power wake-on-bus activity in battery-backed or energy-harvested edge nodes |
| Receiver Hysteresis | 30 mV - rejects high-frequency EFT-induced glitches on noisy industrial wiring |
Pinout & Package
VSSOP-10 package (3.00 mm × 3.00 mm) with exposed thermal pad connected to GND for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| R | Digital output | Receiver data output - CMOS-compatible logic-level signal referenced to VCC/GND |
| RE | Digital input | Active-low receiver enable with 2-MΩ internal pull-up - ensures default-enabled state at power-up |
| DE | Digital input | Active-high driver enable with 2-MΩ internal pull-down - ensures default-disabled state at power-up |
| D | Digital input | Driver data input - accepts standard CMOS logic levels from microcontroller UART TX |
| A | Bus input | Inverting bus terminal (complementary to B) - connects to RS-485 A line of remote node |
| B | Bus input | Non-inverting bus terminal (complementary to A) - connects to RS-485 B line of remote node |
| Y | Bus output | Non-inverting driver output (complementary to Z) - drives local RS-422 Y line |
| Z | Bus output | Inverting driver output (complementary to Y) - drives local RS-422 Z line |
| VCC | Power | 3.3–5.5 V supply input - powers both driver and receiver sections; decoupling capacitor required |
| GND | Ground | Reference return path for all signals and power - must be tied to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Full-duplex operation with independent DE/RE controls | Enables concurrent transmit/receive without direction-control timing constraints or dead-time management |
| Fail-safe receiver (open/short/idle bus) | Guarantees logic-high R output when bus is disconnected, shorted, or unterminated - prevents spurious UART framing errors |
| Thermal shutdown protection | Shuts down driver at 170°C junction temperature - prevents latch-up or permanent damage during overload or poor heatsinking |
| 1/8 unit-load bus loading | Supports up to 256 nodes on single RS-485 trunk - reduces need for repeaters in large-scale building or grid infrastructure networks |
| Glitch-free hot-plug capability | Ensures no bus glitches during live insertion/removal - critical for modular PLC backplanes and field-replaceable I/O modules |
Applications
| Motor Drives | Factory Automation & Control |
|---|---|
Use Scenario: Real-time command and feedback exchange between PLC and servo drives over daisy-chained RS-422 links. IC Role / Device Role / Timing Role: Full-duplex transceiver providing synchronized position/velocity setpoints and encoder status reporting at 50 Mbps. Use Value: Eliminates direction-control latency and enables sub-microsecond loop closure in closed-loop motion systems. | Use Scenario: Distributed I/O module communication in programmable logic controller racks with mixed 3.3-V and 5-V controllers. IC Role / Device Role / Timing Role: Level-shifting, ESD-hardened interface bridging MCU UART to ruggedized RS-485 fieldbus. Use Value: Reduces system-level protection components and supports direct connection to 24-V industrial wiring without external clamping. |
| Grid Infrastructure | HVAC Systems |
Use Scenario: Substation RTU telemetry transmission over long-distance twisted-pair runs subject to lightning-induced surges. IC Role / Device Role / Timing Role: Robust physical-layer transceiver handling ±15 V common-mode offsets and ±18 kV ESD events. Use Value: Maintains data integrity across 1.2-km cable runs without repeaters while surviving repeated electrostatic discharges. | Use Scenario: Communication between rooftop HVAC units and central BMS controllers in commercial buildings. IC Role / Device Role / Timing Role: Low-power, thermally stable transceiver operating continuously at 125°C ambient near heat exchangers. Use Value: Enables reliable 24/7 operation in high-temperature mechanical rooms without derating or forced cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RS-485 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THVD1451DRBR | No DE/RE pins; always-enabled full-duplex operation; same 50-Mbps rate and VSSOP-8 package | Requires external logic for direction control or sleep management; unsuitable where dynamic enable/disable is needed | Select THVD1451DRBR only if system firmware handles bus arbitration without hardware enable signaling |
| SN65HVD78DR | Half-duplex only; 50-Mbps rate; ±16-kV IEC ESD; SOIC-8; no thermal shutdown | Lacks full-duplex capability and failsafe receiver; requires external pull-ups for RE/DE control | Choose SN65HVD78DR only for cost-sensitive half-duplex point-to-point links where thermal safety is not critical |
Compared with THVD1451DRBR and SN65HVD78DR, THVD1452DGSR uniquely delivers hardware-controllable full-duplex operation with integrated failsafe and thermal protection-enabling deterministic, maintenance-free deployment in distributed control networks requiring concurrent bidirectional traffic and fault resilience.
Availability
THVD1452DGSR is available at Aetrix Electronics and suitable for motor drives, factory automation & control, and grid infrastructure requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for THVD1452DGSR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies for industrial, automotive, and communications markets.
The THVD14xx product line was designed specifically for rugged RS-485/RS-422 communication in electrically noisy industrial environments, emphasizing ESD robustness, wide temperature operation, and fail-safe reliability.
FAQ
What is the maximum signaling rate supported by THVD1452DGSR?
The THVD1452DGSR supports a maximum signaling rate of 50 Mbps under recommended operating conditions (VCC = 3.3 V to 5.5 V, TA = –40°C to 125°C, RL = 54 Ω). This rate is verified per TI's SLLSEY3E datasheet Figure 10 and Table 7.8, enabling high-throughput deterministic communication in motion control and real-time automation systems using the THVD1452DGSR.
Does THVD1452DGSR support PROFIBUS compliance?
Yes, THVD1452DGSR meets PROFIBUS requirements through its guaranteed minimum differential output voltage (VOD) of 2.1 V at 5 V supply (±10%), as specified in Section 7.7 of the datasheet. This ensures sufficient noise margin for reliable operation in PROFIBUS DP networks, confirming THVD1452DGSR suitability for industrial fieldbus applications.
What package type is used for THVD1452DGSR?
THVD1452DGSR uses the VSSOP-10 package (DGS), measuring 3.00 mm × 3.00 mm with an exposed thermal pad. This is explicitly listed in the "Device Information" table of the THVD14xx datasheet (SLLSEY3E, page 4) and confirmed in the Pin Configuration section (page 7), distinguishing it from SOIC-14 variants of the same part number.
How does THVD1452DGSR handle bus faults such as open or short circuits?
THVD1452DGSR incorporates open, short, and idle bus failsafe functionality: its receiver outputs a logic-high state (R = high) under all three conditions. This behavior is documented in the Features list (page 1) and ensures UART framing integrity without software intervention-critical for robust operation of THVD1452DGSR in unattended industrial deployments.
What is the ESD protection rating of THVD1452DGSR on bus pins?
THVD1452DGSR provides ±18 kV contact discharge and ±25 kV air-gap discharge per IEC 61000-4-2 on bus pins (A, B, Y, Z), plus ±4 kV electrical fast transient (EFT) immunity per IEC 61000-4-4. These values are specified in Sections 7.2 and 7.3 of the official datasheet and confirm THVD1452DGSR's suitability for installation in electrically hostile factory floor environments.
THVD1452DGSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- RS485
- Number of Drivers/Receivers:
- 1/1
- Duplex:
- Full
- Receiver Hysteresis:
- 30 mV
- Data Rate:
- 50Mbps
- Voltage - Supply:
- 3V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
THVD1452DGSR FAQ
1.How can I place an order for THVD1452DGSR through Aetrix?
Please submit a Request for Quotation (RFQ) for THVD1452DGSR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for THVD1452DGSR reliable?
The price and inventory of THVD1452DGSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for THVD1452DGSR is usually 5 days.
3.What payment methods are accepted for THVD1452DGSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for THVD1452DGSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for THVD1452DGSR?
THVD1452DGSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your THVD1452DGSR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for THVD1452DGSR?
For technical support, including THVD1452DGSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your THVD1452DGSR requirements.
6.How does Aetrix verify that THVD1452DGSR is sourced from the original manufacturer or authorized distributors?
All THVD1452DGSR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that THVD1452DGSR meets industry standards.
7.What is the process for return or replacement of THVD1452DGSR?
All THVD1452DGSR units undergo pre-shipment inspection (PSI). If there is an issue with THVD1452DGSR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The THVD1452DGSR part is unused and in its original packaging.
Return procedure for THVD1452DGSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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