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Texas Instruments DP83826IRHBT
- Part No.:
- DP83826IRHBT
- Manufacturer:
- Texas Instruments
- Category:
- Controllers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
DP83826IRHBT.pdf
- Description:
- LOW COST ENET PHY INDUSTRIAL
- Quantity:
- Payment:
- Shipping:
Inventory:170
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Product details
Overview
DP83826IRHBT from Texas Instruments is a deterministic, low-latency 10/100 Mbps industrial Ethernet PHY with TX latency of 40 ns and RX latency of 170 ns, ±2 ns deterministic variation over power cycles, and support for MII/RMII MAC interfaces. It operates across –40°C to 85°C and meets IEEE 802.3 (10BASE-Te, 100BASE-TX) and EtherCAT® standards for real-time factory automation systems.
For engineers reviewing the DP83826IRHBT datasheet, DP83826IRHBT pinout, DP83826IRHBT application, or DP83826IRHBT equivalent, key selection considerations include its dual-mode configuration (BASIC/ENHANCED), integrated EMC robustness (IEC 61000-4-2 ±8 kV contact), cable reach >150 m, and programmable energy-saving modes including EEE (IEEE 802.3az) and Wake-on-LAN.
Technical Context
The DP83826IRHBT implements a voltage-mode line driver with integrated MDI terminations and supports both MII and RMII interfaces - including RMII back-to-back repeater mode in ENHANCED mode. Its hardware bootstraps enable fast link-drop detection (<10 µs) and configurable Auto-MDIX, while the fixed phase relationship between XI and TX_CLK (<±2 ns) ensures precise timing synchronization in deterministic networks.
Two operational modes are selected at power-up via ModeSelect (Pin 1): BASIC mode provides standard Ethernet pin compatibility and speed/duplex strapping, while ENHANCED mode adds EtherCAT®-ready features including strap-controllable fast link-drop, odd nibble detection, and CLKOUT-based system clock distribution - all without requiring register writes for basic operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Latency (TX/RX) | 40 ns / 170 ns - enables sub-microsecond cycle times in motion control loops |
| Determinism | ±2 ns latency variation over power cycles - guarantees repeatable timing for synchronized industrial Ethernet |
| Operating Temp | –40°C to +85°C - qualified for industrial environments including motor drives and grid infrastructure |
| Power Consumption | <160 mW active - reduces thermal load in dense PLC and I/O module designs |
| EMC Immunity | IEC 61000-4-2 ±8 kV contact - eliminates need for external ESD protection on MDI lines |
| Cable Reach | >150 m - supports extended node spacing in factory floor deployments without repeaters |
| MAC Interface | MII and RMII - allows flexible integration with legacy and space-constrained controllers |
Pinout & Package
VQFN-32 (RHB) package, 5.00 mm × 5.00 mm, thermally enhanced with exposed pad connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ModeSelect (Pin 1) | Configuration input | Selects BASIC (GND) or ENHANCED (NC/pull-up) mode at power-up; determines pin function mapping and bootstrap capabilities |
| RX_D[3:0] / RX_D[1:0] | Receive data bus | MII: 4-bit parallel data synchronous to RX_CLK; RMII: 2-bit data synchronous to 50 MHz reference clock |
| TX_D[3:0] / TX_D[1:0] | Transmit data bus | MII: 4-bit nibble aligned to TX_CLK rising edge; RMII: 2-bit data aligned to reference clock rising edge |
| CLKOUT/LED1 (Pin 31, ENHANCED) or LED1/TX_ER (Pin 31, BASIC) | Configurable output | ENHANCED: 25 MHz reference clock output unaffected by resets; BASIC: LED1 indicator (100 Mbps link only) or TX_ER signal |
| PWRDN/INT (Pin 21, ENHANCED) or INT (Pin 21, BASIC) | Power/interrupt control | ENHANCED: default power-down input, configurable as open-drain interrupt; BASIC: dedicated open-drain interrupt output |
| RST_N (Pin 32) | Reset input | Active-low asynchronous reset (≥25 µs pulse) re-scans straps and restores all registers to default state |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode pin configuration | BASIC mode matches common PHY pinouts for drop-in replacement; ENHANCED mode enables EtherCAT®-specific strapping and CLKOUT synchronization |
| Deterministic latency | Fixed XI-to-TX_CLK phase <±2 ns and <±2 ns latency variation over power cycles - essential for time-sensitive networking (TSN) and motion control |
| Integrated EMC robustness | Meets IEC 61000-4-2 (±8 kV contact), IEC 61000-4-4 (±4 kV EFT), and CISPR 22 Class B emissions - reduces board-level filtering requirements |
| Programmable low-power states | Supports Active Sleep, Deep Power Down, Energy Efficient Ethernet (IEEE 802.3az), and Wake-on-LAN - extends uptime in battery-backed or fanless systems |
| Diagnostic capability | Built-in cable diagnostics, loopback modes, and BIST - enables field-deployable link health verification without external test equipment |
Applications
| Factory Automation | Motion Control |
|---|---|
Use Scenario: High-speed PLC-to-I/O module communication in packaging lines with strict jitter budgets. IC Role / Device Role / Timing Role: PHY layer device providing deterministic 100BASE-TX transmission with 40 ns TX latency and fixed XI–TX_CLK phase alignment. Use Value: Enables 125 µs cycle times in EtherCAT® distributed clocks networks without timing drift across power cycles. | Use Scenario: Synchronized multi-axis servo drive interconnection in robotics cells. IC Role / Device Role / Timing Role: Low-jitter Ethernet PHY supporting RMII back-to-back repeater mode and hardware-fast link-drop detection. Use Value: Achieves <10 µs link recovery after cable disconnect - critical for maintaining real-time torque coordination during maintenance. |
| Grid Infrastructure | Building Automation |
Use Scenario: Remote terminal unit (RTU) connectivity in substations with long cable runs and high EMI. IC Role / Device Role / Timing Role: Industrial-grade PHY with >150 m cable reach, ±8 kV IEC 61000-4-2 ESD rating, and voltage-mode line driver. Use Value: Eliminates need for external surge protection and extends deployment range without fiber conversion. | Use Scenario: HVAC controller network with mixed 10/100 Mbps devices and intermittent traffic patterns. IC Role / Device Role / Timing Role: Energy-aware PHY implementing IEEE 802.3az EEE and deep power-down during idle periods. Use Value: Reduces average power per node by >40% versus legacy PHYs while maintaining full link responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Ethernet PHY applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DP83822HFRHBT | Supports RGMII interface and fiber media; wider temperature range (–40°C to 105°C); no ENHANCED mode or EtherCAT®-specific strapping | Targeted at RGMII-based controllers and optical uplinks; lacks fast link-drop and RMII repeater mode | Choose when RGMII interface or extended temperature is required, but EtherCAT® determinism is not needed |
| LAN8720A-EZC | Single 3.3 V supply only; no 1.8 V I/O option; higher typical power (220 mW); no CLKOUT or hardware fast link-drop | Designed for cost-sensitive consumer/industrial applications; lacks industrial EMC certifications and deterministic latency specs | Choose for non-deterministic, lower-cost Ethernet links where IEC 61000-4-2 ±8 kV and sub-2 ns latency variation are not required |
Compared with DP83826IRHBT, DP83822HFRHBT adds RGMII and fiber support but removes EtherCAT®-optimized strapping, while LAN8720A-EZC offers simpler integration at the expense of industrial robustness and timing precision - making DP83826IRHBT the sole choice for deterministic, EMC-hardened, dual-mode industrial Ethernet.
Availability
DP83826IRHBT is available at Aetrix Electronics and suitable for factory automation, motor drives, and grid infrastructure applications requiring stable component supply, long-term lifecycle assurance, and guaranteed industrial temperature grading.
Supply support for DP83826IRHBT 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, with leadership in industrial communications and high-reliability interface solutions.
The DP83826IRHBT belongs to TI's industrial Ethernet PHY product line, engineered specifically for deterministic, low-latency, and EMC-robust connectivity in real-time automation systems - including EtherCAT®, PROFINET IRT, and time-sensitive networking (TSN) implementations.
FAQ
What is the operating temperature range for DP83826IRHBT?
The DP83826IRHBT is rated for industrial operation from –40°C to +85°C ambient temperature. This specification aligns with the DP83826I variant designation and is validated across all electrical parameters in the recommended operating conditions table. The device maintains full compliance with IEEE 802.3, EtherCAT®, and IEC 61000-4-2 ESD requirements across this full range. Derating is not required within these limits, and thermal performance is supported by RθJB = 31.5°C/W.
Does DP83826IRHBT support both MII and RMII interfaces?
Yes, DP83826IRHBT supports both MII and RMII MAC interfaces in either BASIC or ENHANCED mode. In MII mode, it uses 25 MHz or 2.5 MHz clocks derived from the received data stream; in RMII leader mode, it provides a 50 MHz reference clock. RMII back-to-back repeater mode is available exclusively in ENHANCED mode and requires specific strap configuration. Pin assignments differ between modes - for example, Pin 31 functions as CLKOUT/LED1 in ENHANCED mode but as LED1/TX_ER in BASIC mode.
How does the dual-mode configuration (BASIC vs. ENHANCED) affect DP83826IRHBT pin functionality?
The DP83826IRHBT's pin functionality changes based on ModeSelect (Pin 1) strapping: tied to GND for BASIC mode (standard Ethernet pinout), or left unconnected/pulled up for ENHANCED mode (EtherCAT®-optimized). Key differences include Pin 21 (PWRDN/INT in ENHANCED, INT-only in BASIC) and Pin 31 (CLKOUT/LED1 vs. LED1/TX_ER). ENHANCED mode also enables hardware bootstraps like fast link-drop control and RMII repeater mode that are absent or fixed in BASIC mode - all without requiring register writes at startup.
What EMC standards does DP83826IRHBT meet out-of-the-box?
DP83826IRHBT meets IEC 61000-4-2 (±8 kV contact, ±15 kV air), IEC 61000-4-4 (±4 kV EFT at 5/100 kHz), and CISPR 22 Class B conducted/radiated emissions without external filtering components. These ratings are verified across the full –40°C to +85°C temperature range and apply to the MDI interface pins. The integrated voltage-mode line driver and internal terminations contribute directly to this certified EMC performance, reducing bill-of-materials and PCB layout complexity in industrial designs.
Can DP83826IRHBT operate with a 1.8 V I/O supply?
Yes, DP83826IRHBT supports dual I/O voltage operation: VDDIO may be set to either 1.8 V or 3.3 V, with corresponding logic level thresholds and drive strength. When using 1.8 V, all digital I/O pins (TX_EN, TX_D[3:0], RX_D[3:0], MDIO, MDC, etc.) and XI oscillator input must be supplied at 1.62–1.98 V. The device automatically adapts internal termination and receiver thresholds to maintain signal integrity. This flexibility enables direct interfacing with low-voltage FPGAs and microcontrollers without level-shifting circuitry.
DP83826IRHBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-VFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- Ethernet
- Function:
- MAC Controller
- Interface:
- MII, RMII
- Standards:
- IEEE 802.3, 10/100 Base-T/TX PHY
- Voltage - Supply:
- 1.62V ~ 1.98V, 3V ~ 3.6V
- Current - Supply:
- 55mA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Supplier Device Package:
- 32-VQFN (5x5)
- Grade:
- -
- Qualification:
- -
DP83826IRHBT FAQ
1.How can I place an order for DP83826IRHBT through Aetrix?
Please submit a Request for Quotation (RFQ) for DP83826IRHBT 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 DP83826IRHBT reliable?
The price and inventory of DP83826IRHBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DP83826IRHBT is usually 5 days.
3.What payment methods are accepted for DP83826IRHBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DP83826IRHBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DP83826IRHBT?
DP83826IRHBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DP83826IRHBT 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 DP83826IRHBT?
For technical support, including DP83826IRHBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DP83826IRHBT requirements.
6.How does Aetrix verify that DP83826IRHBT is sourced from the original manufacturer or authorized distributors?
All DP83826IRHBT 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 DP83826IRHBT meets industry standards.
7.What is the process for return or replacement of DP83826IRHBT?
All DP83826IRHBT units undergo pre-shipment inspection (PSI). If there is an issue with DP83826IRHBT, 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 DP83826IRHBT part is unused and in its original packaging.
Return procedure for DP83826IRHBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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