Texas Instruments DP83867CRRGZT

Overview

DP83867CRRGZT from Texas Instruments is a commercial-grade, 48-pin VQFN Ethernet PHY transceiver supporting 10/100/1000BASE-T protocols with RGMII MAC interface, 457 mW full-power consumption, ±6 kV IEC 61000-4-2 ESD immunity on MDI pins, and IEEE 1588 Start-of-Frame detection for industrial timing applications.

For engineers reviewing the DP83867CRRGZT datasheet, DP83867CRRGZT pinout, DP83867CRRGZT application, or DP83867CRRGZT equivalent, this page delivers verified electrical specs, RGMII timing constraints, thermal metrics, LED/GPIO configuration options, and real-world implementation guidance for motor drives and factory automation systems.

Technical Context

The DP83867CRRGZT implements a fully integrated PMD sublayer compliant with IEEE 802.3 10BASE-Te, 100BASE-TX, and 1000BASE-T standards, featuring programmable RGMII delay modes (16 settings), integrated MDI termination resistors, and configurable I/O voltage support (1.8 V / 2.5 V / 3.3 V). It delivers ultra-low latency: TX < 90 ns, RX < 290 ns.

It supports Time-Sensitive Networking (TSN) via IEEE 1588 Start-of-Frame detection and provides synchronous clock outputs (25 MHz or 125 MHz), Wake-on-LAN packet detection, RJ45 mirror mode, and cable diagnostics - all within a 0°C to +70°C commercial temperature range.

Key Specifications

Pinout & Package

VQFN-48 (RGZ) package with 7 mm × 7 mm footprint and exposed thermal pad (DAP = GND); designed for surface-mount assembly with strict thermal management requirements.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Ethernet PHY applications.

Compared with DP83867IRRGZ, the DP83867CRRGZT trades extended temperature capability for lower cost and same RGMII functionality; versus KSZ9031RNXIA, it delivers superior ESD immunity, integrated termination, and TSN-ready timestamping - making it optimal for factory-floor Ethernet nodes demanding reliability and determinism.

Availability

DP83867CRRGZT is available at Aetrix Electronics and suitable for industrial motor drives, factory automation controllers, embedded computing platforms, and test equipment requiring stable component supply across production lifecycles.

Supply support for DP83867CRRGZT 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 leader specializing in analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.

The DP83867CRRGZT belongs to TI's robust Ethernet PHY product line, engineered specifically for noise-immune, low-latency, and thermally efficient 10/100/1000BASE-T implementations in industrial automation and embedded networking.

FAQ

What is the maximum operating temperature for DP83867CRRGZT?

The DP83867CRRGZT has a commercial temperature grade with a specified operating range of 0°C to +70°C. Its junction temperature must not exceed +90°C under normal operation. This makes it unsuitable for environments requiring industrial-grade thermal resilience (–40°C to +85°C), where the DP83867IRRGZ variant should be selected instead. Thermal design must account for 457 mW power dissipation and use the exposed DAP for effective heat transfer.

Does DP83867CRRGZT support MII or GMII interfaces?

No, DP83867CRRGZT supports RGMII only - it does not implement MII or GMII interfaces. The RGZ package variant is explicitly limited to RGMII operation, unlike the PAP package (e.g., DP83867IRPAP) which supports MII/GMII/RGMII. Designers must ensure their MAC provides RGMII timing compliance, including dual-edge sampling and controlled clock/data skew, as confirmed in Section 6.9 of the DP83867CRRGZT datasheet.

How is ESD protection implemented on DP83867CRRGZT MDI pins?

The DP83867CRRGZT provides ±6 kV ESD protection on MDI pins per IEC 61000-4-2 (contact discharge), exceeding standard industrial requirements. This is achieved through on-die protection structures - no external TVS diodes are required for basic compliance. However, system-level surge protection (e.g., 10/700 µs waveform) still necessitates external components. The ±6 kV rating is lower than the ±8 kV offered by the industrial DP83867IRRGZ variant.

Can DP83867CRRGZT generate a 125 MHz clock for RGMII?

Yes, DP83867CRRGZT provides a 125 MHz synchronized clock output on the CLK_OUT pin, derived from its internal PLL and locked to the recovered 1000BASE-T symbol clock. This eliminates the need for an external 125 MHz oscillator in RGMII designs. The clock meets jitter specifications required for RGMII timing closure, and its phase relationship to GTX_CLK is controlled via register-programmable delay settings.

What GPIO functionality is available on DP83867CRRGZT?

The DP83867CRRGZT includes two configurable GPIO pins (GPIO_0 and GPIO_1) accessible via strap configuration or register control. These can be assigned as inputs, outputs, or open-drain drivers, and support functions such as link status indication, interrupt signaling, or custom control signals. Their behavior is defined in the GPIO_MUX_CTRL register, and they operate at VDDIO voltage levels (1.8 V / 2.5 V / 3.3 V), matching the selected I/O interface voltage.