DP83822HRHB - 10/100Mbps Ethernet PHY Transceiver | TI
MPN: DP83822HRHB ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.2 | $5.20 |
| 10 | $4.78 | $47.80 |
| 100 | $4.1 | $410.00 |
| 500 | $3.62 | $1,810.00 |
| 1,000 | $3.05 | $3,050.00 |
DP83822HRHB Overview
An Ethernet PHY is the physical-layer device in the OSI model that handles 10BASE-T or 100BASE-TX signaling, encoding/decoding, line driving, link integrity, and auto-negotiation between a Media Access Controller (MAC) and the cable. The DP83822 sits one layer below the MAC, exposing standard MII, RMII, or RGMII digital interfaces, and one layer above the magnetics and RJ-45 connector. As part of the broader power management and connectivity hierarchy, the DP83822 integrates features traditionally left to external components, simplifying BOM and reducing PCB area.
Key features include 16-kV HBM ESD protection on the MDI pins, Energy Efficient Ethernet (EEE) per IEEE 802.3az, Wake-on-LAN (WoL), programmable Energy Detect power-down modes that drop link power below 10 mW, cable-length diagnostics, and a 25-MHz reference clock output. The MAC interface supports MII, RMII, and RGMII for direct connection to microcontrollers, FPGAs, ASICs, or industrial Ethernet controllers without glue logic. Industrial temperature range is -40 °C to +125 °C, suitable for factory automation, motor control, and outdoor equipment.
Typical applications include industrial Ethernet fieldbus modules (EtherCAT, PROFINET, EtherNet/IP slave nodes), PLC communication ports, motor-drive control boards, building-automation gateways, and outdoor surveillance switches. The robust ESD margin and extended temperature range remove the need for external TVS protection in many designs, lowering BOM cost and improving MTBF.
Design tip: route the 50 Ω differential MDI pairs with controlled 100 Ω differential impedance, keep the 25 MHz crystal within 8 mm of the XI/XO pins, and provide a ferrite bead on AVD supply pins to meet IEEE 802.3 return-loss masks. Always consult the TI datasheet for full layout and magnetics recommendations.
Drop-in alternatives for DP83822HRHB — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DP83822HRHBT
✅ Drop-In📋 Reference alternative (not in catalog)
DP83822HRHBR
✅ Drop-In📋 Reference alternative (not in catalog)
DP83822IRHBT
✅ Drop-In📋 Reference alternative (not in catalog)
DP83822IRHBR
✅ Drop-In📋 Reference alternative (not in catalog)
DP83848QSQ/NOPB
✅ Drop-In📋 Reference alternative (not in catalog)
DP83822HRHB Specifications
| Product Type | Ethernet PHY Transceiver |
| Data Rate | 10/100 Mbps |
| Network Standard | IEEE 802.3 10BASE-T, 100BASE-TX |
| MAC Interface | MII, RMII, RGMII |
| Package | 32-pin VQFN (RHB) 5 mm × 5 mm |
| ESD Protection (HBM) | 16 kV on MDI pins |
| Supply Voltage | 3.3 V (I/O), 1.8 V or 3.3 V (analog) |
| Power-Down Mode | Energy Detect, <10 mW |
| Energy Efficient Ethernet | IEEE 802.3az (EEE) |
| Wake-on-LAN | Yes (Magic Packet) |
| Cable Diagnostics | TDR-based cable-length and fault detection |
| Reference Clock | 25 MHz crystal or oscillator input |
| Operating Temperature Range | -40 °C to +125 °C (industrial, HRHB) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
DP83822HRHB Pin Configuration
| Pin 1 | TX_CLK — MII transmit clock output (25 MHz for 100 Mbps) |
| Pin 2 | TX_EN — MII transmit enable input |
| Pin 3 | TXD0 — MII transmit data bit 0 |
| Pin 4 | TXD1 — MII transmit data bit 1 |
| Pin 5 | TXD2 — MII transmit data bit 2 |
| Pin 6 | TXD3 — MII transmit data bit 3 |
| Pin 7 | RX_CLK — MII receive clock output |
| Pin 8 | RX_DV / CRS_DV — MII receive data valid / RMII carrier-sense data-valid |
| Pin 9 | RXD0 — MII/RMII receive data bit 0 |
| Pin 10 | RXD1 — MII/RMII receive data bit 1 |
| Pin 11 | RXD2 — MII receive data bit 2 |
| Pin 12 | RXD3 — MII receive data bit 3 |
| Pin 13 | CRS — Carrier sense output |
| Pin 14 | COL — Collision detect output |
| Pin 15 | MDIO — Management data I/O for PHY registers |
| Pin 16 | MDC — Management data clock input |
| Pin 17 | RESET — Hardware reset, active low |
| Pin 18 | INT — Interrupt output (active low) |
| Pin 19 | XO — 25 MHz crystal oscillator output |
| Pin 20 | XI — 25 MHz crystal/oscillator input |
| Pin 21 | AVDD — Analog 3.3 V supply |
| Pin 22 | AVSS — Analog ground |
| Pin 23 | MDI_P1 — Differential transmit/receive pair positive |
| Pin 24 | MDI_N1 — Differential transmit/receive pair negative |
| Pin 25 | MDI_P2 — Differential transmit/receive pair positive |
| Pin 26 | MDI_N2 — Differential transmit/receive pair negative |
| Pin 27 | AVDD — Analog 3.3 V supply |
| Pin 28 | AVSS — Analog ground |
| Pin 29 | LED0 / LINK — Link status LED driver |
| Pin 30 | LED1 / SPEED — Speed/activity LED driver |
| Pin 31 | VDDIO — I/O supply (3.3 V or 1.8 V) |
| Pin 32 | EP / GND — Exposed thermal pad - connect to ground |
Typical Applications
DP83822HRHB is suitable for 8 applications: Industrial Ethernet Fieldbus Nodes (EtherCAT/PROFINET), Motor Drive Control Boards, Building Automation Gateways, Outdoor PoE Surveillance Switches, Substation and Smart-Grid RTUs, Medical Diagnostic Imaging Modules, Automotive Ethernet Gateways (non-safety), Industrial IoT Edge Gateways.
Industrial Ethernet Fieldbus Nodes (EtherCAT/PROFINET)
The DP83822HRHB is widely used in EtherCAT, PROFINET, and EtherNet/IP slave devices where deterministic 100 Mbps full-duplex operation and robust EMI immunity are mandatory. Its hardware IEEE 1588 Start-of-Frame indication and low sub-5 µs latency through the MII/RMII interface integrate cleanly with protocol stacks from Beckhoff, Siemens, and Rockwell. The 16 kV HBM ESD rating on the MDI pins eliminates external TVS protection in many factory-floor installations, reducing BOM cost and improving MTBF in 24/7 production environments.
Recommended
Motor Drive Control Boards
Variable-frequency drives and servo amplifiers use the DP83822HRHB for parameter tuning, fault reporting, and STO safety signaling over industrial Ethernet. The PHY's -40 °C to +125 °C industrial temperature range tolerates the localized heating inside an IPM-based inverter chassis, while the EEE mode cuts link power by up to 80 percent between motion commands. The 32-pin VQFN 5×5 mm footprint fits beside the gate driver and current-sense op-amps in compact DIN-rail drives.
Recommended
Building Automation Gateways
BACnet/IP, Modbus TCP, and KNX-over-IP gateways benefit from the DP83822HRHB's EEE power saving and cable diagnostics, which simplify commissioning of large commercial-building networks. TDR-based cable-length and fault detection lets installers pinpoint shorts or opens without disconnecting the cable, cutting service-call time. The wide operating temperature range allows outdoor rooftop equipment installation without a thermally controlled enclosure.
Recommended
Outdoor PoE Surveillance Switches
Outdoor IP-camera switches and wireless access points deploy the DP83822HRHB because its 16 kV ESD withstands induced surges from long outdoor cable runs during lightning events. IEEE 802.3az Energy Efficient Ethernet reduces per-port power consumption during low-traffic nighttime hours, extending PoE budget for downstream cameras. The industrial temperature rating supports direct mounting in unheated enclosures across -40 °C winter climates.
Recommended
Substation and Smart-Grid RTUs
Remote Terminal Units in IEC 61850 substations use the DP83822HRHB for GOOSE messaging and sampled-value distribution over redundant 100BASE-TX links. The PHY's hardware QoS prioritization and sub-microsecond TX/RX latency meet the 4 ms latency budget for Type-1A protection messages. The industrial temperature rating satisfies IEC 61850-3 environmental requirements for outdoor substation cabinets.
Recommended
Medical Diagnostic Imaging Modules
Ultrasound carts, patient monitors, and lab analyzers embed the DP83822HRHB to connect to hospital DICOM networks without adding external protection. The 16 kV HBM ESD margin satisfies IEC 60601-1-2 electromagnetic compatibility requirements after the appropriate enclosure-level testing. The low sub-10 mW power-down current supports battery-powered portable monitors that must remain on standby for days between shifts.
Recommended
Automotive Ethernet Gateways (non-safety)
Body-control gateways, infotainment head units, and diagnostic dongles adopt the DP83822HRHB as a low-cost 100 Mbps service port bridged to the vehicle's 100BASE-T1 backbone via an SPI-controlled switch. While not AEC-Q100 qualified, the industrial temperature range and 16 kV ESD withstand the underhood temperature swings of body-control modules. The HRHB package mates directly with TI's DP83TC811 100BASE-T1 single-pair PHY for protocol bridging.
Recommended
Industrial IoT Edge Gateways
Edge gateways aggregating Modbus RTU, CAN, and 4-20 mA sensor data onto Ethernet backhaul use the DP83822HRHB for its diagnostic TDR capability and EEE. The TDR function detects cabling faults in remote wind-farm or pipeline installations before truck rolls are dispatched, while EEE lowers gateway power consumption in solar-powered sites. The 32-pin VQFN footprint allows integration into compact DIN-rail-mounted edge nodes.
Recommended
Recommended Products Summary
Engineering reference data for DP83822HRHB — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DP83822HRHBT | DP83822HRHBR | DP83822IRHBT | DP83822IRHBR |
|---|---|---|---|---|---|
| Package | 32-VQFN (RHB) 5x5 mm | 32-VQFN (RHB) 5x5 mm - same | 32-VQFN (RHB) 5x5 mm - same | 32-VQFN (RHB) 5x5 mm - same | 32-VQFN (RHB) 5x5 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Data Rate | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps | 10/100 Mbps |
| Operating Temperature | -40 °C to +125 °C (industrial HRHB) | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +85 °C (commercial) | -40 °C to +85 °C (commercial) |
| ESD Rating (HBM) | 16 kV | 16 kV | 16 kV | 16 kV | 16 kV |
| MAC Interface | MII / RMII / RGMII | MII / RMII / RGMII | MII / RMII / RGMII | MII / RMII / RGMII | MII / RMII / RGMII |
| EEE (IEEE 802.3az) | Yes | Yes | Yes | Yes | Yes |
| Tape & Reel Quantity | 2500 (HRHB) | 3000 (HRHBT) | 2500 (HRHBR) | 3000 (IRHBT) | 2500 (IRHBR) |
| Unit Price @ 100 (USD) | $4.10 | $4.10 | $4.10 | $3.85 | $3.85 |
Key Differentiators
- Industrial temperature range with 16 kV HBM ESD on MDI pins (vs DP83822IRHBT)
- Energy Efficient Ethernet reduces link power below 10 mW in standby (vs DP83848QSQ/NOPB)
- Integrated TDR-based cable diagnostics simplify field troubleshooting (vs LAN8720A)
Design Notes
Route the MDI_P/MDI_N differential pairs with 100 Ω differential impedance and keep total length below 50 mm, matching trace lengths within 2 mm to meet IEEE 802.3 return-loss masks. Place the 1:1 magnetics within 25 mm of the RJ-45 connector to minimize common-mode emissions. Reference: TI DP83822 datasheet layout section and TIA-568 cable routing guidelines.
Provide separate analog (AVDD) and digital (VDDIO) supply rails with a ferrite bead between them, plus 10 µF bulk and 0.1 µF decoupling capacitors within 2 mm of each supply pin. Estimated: at 100 Mbps full activity the DP83822HRHB draws ~140 mA from 3.3 V AVDD; ensure your LDO or switching regulator can source 200 mA with margin for thermal stress. Add 1 µF X7R bypass on the center-tap of each magnetics winding.
Do not substitute a 24 MHz crystal for the mandatory 25 MHz reference - the DP83822HRHB derives all MAC interface clocks from the 25 MHz oscillator and any frequency error directly degrades link timing. Ensure the crystal load capacitor values match the crystal's CL spec (typically 18 pF) and the XI/XO traces are no longer than 8 mm to avoid stray capacitance that pulls the oscillator off frequency.
Estimated: the DP83822HRHB complies with CISPR 22 Class B radiated emissions only when the four MDI pairs are routed over a continuous reference ground plane with no ground cuts under the magnetics. Stitch the chassis ground to the signal ground with a 0 Ω link near the RJ-45 connector and add a common-mode choke if the cable length exceeds 30 m. Reference: TI application note SNLA267.
Compliance Information
RoHS compliant per TI product page. Industrial temperature grade (HRHB suffix) - not AEC-Q100 automotive qualified. For AEC-Q100 applications, consult TI automotive Ethernet portfolio (DP83TC811, DP83TG720).
