Texas Instruments DP83867ERGZT

Overview

DP83867ERGZT from Texas Instruments is a robust, extended-temperature Ethernet PHY transceiver supporting 10/100/1000BASE-T protocols with RGMII/SGMII MAC interface, 457mW full-power consumption, <90ns TX / <290ns RX latency, and 8kV IEC 61000-4-2 ESD protection on MDI pins - deployed in industrial motor drives and TSN-enabled factory automation systems.

For engineers reviewing the DP83867ERGZT datasheet, DP83867ERGZT pinout, DP83867ERGZT application, or DP83867ERGZT equivalent, key selection factors include its –40°C to +105°C operating range, integrated MDI termination, IEEE 1588 Start of Frame detection, configurable I/O voltage (1.8V/2.5V/3.3V), and RJ45 mirror mode for diagnostics.

Technical Context

The DP83867ERGZT implements a fully compliant IEEE 802.3 PHY layer with integrated PMD sublayers for 10BASE-Te, 100BASE-TX, and 1000BASE-T over twisted-pair media. It supports deterministic low-latency operation via hardware-accelerated SFD detection for IEEE 1588 timestamping and provides synchronous Ethernet clock output at 25MHz or 125MHz.

Its dual-mode MAC interface enables direct connection to RGMII (with 16 programmable delay modes) or embedded-clock SGMII (625MHz differential clock), while WoL packet detection and fast link drop mode support power-sensitive industrial embedded computing applications.

Key Specifications

Pinout & Package

DP83867ERGZT uses a 48-pin VQFN (RGZ) package, 7mm × 7mm, with exposed thermal pad (DAP = GND). Pin functions are validated per TI SNLS504G Rev JUNE 2026.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DP83867ISRGZ, DP83867ERGZT delivers higher thermal margin for sealed industrial enclosures; compared with Marvell 88E1512, it reduces component count via integrated MDI termination and adds TSN-specific hardware acceleration - critical for deterministic motion control.

Availability

DP83867ERGZT is available at Aetrix Electronics and suitable for industrial motor drives, factory automation controllers, and fieldbus gateway nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DP83867ERGZT 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, with decades of Ethernet PHY innovation and industrial-grade reliability validation.

The DP83867 product line targets high-immunity, low-latency industrial Ethernet applications - designed specifically for TSN-compliant motion control, factory automation, and ruggedized communications infrastructure where ESD robustness and thermal resilience are non-negotiable.

FAQ

What is the maximum operating temperature for DP83867ERGZT?

The DP83867ERGZT is rated for continuous operation from –40°C to +105°C ambient temperature, with a maximum junction temperature of 125°C. This extended temperature grade makes it suitable for sealed industrial enclosures, motor drive cabinets, and outdoor equipment where passive cooling dominates thermal management. The device's thermal resistance (RθJA = 30.8°C/W) and bottom-side thermal pad (DAP = GND) support reliable heat dissipation under full 1000BASE-T load.

Does DP83867ERGZT support IEEE 1588 Precision Time Protocol?

Yes, DP83867ERGZT supports IEEE 1588 via hardware-accelerated Start of Frame (SFD) detection with ≤8ns variation in 100Mbps mode and zero variation in 1000Mbps leader/follower packets. This deterministic latency enables accurate timestamping at the PHY layer without software overhead. The DP83867ERGZT also provides synchronous Ethernet clock outputs (25MHz/125MHz) to align local oscillators with network timing, fulfilling core TSN timing requirements.

Can DP83867ERGZT operate with a 1.8V I/O supply?

Yes, DP83867ERGZT supports configurable I/O voltage at 1.8V (±5%), 2.5V (±5%), or 3.3V (±5%) on its VDDIO pins. When configured for 1.8V operation, input thresholds scale to 0.2×VDDIO (low) and 0.7×VDDIO (high), and output drive strength adjusts accordingly. This eliminates level shifters when interfacing with modern low-voltage SoCs and FPGAs, simplifying power domain partitioning in compact industrial designs.

What MAC interfaces does DP83867ERGZT support?

DP83867ERGZT supports both Reduced Gigabit Media Independent Interface (RGMII) and Serial Gigabit Media Independent Interface (SGMII). RGMII uses 4-bit parallel data with separate GTX_CLK and RX_CLK signals and offers 16 programmable delay modes for PCB skew compensation. SGMII uses differential 625MHz clock/data pairs (SGMII_SIP/SIN, SGMII_SOP/SON, SGMII_COP/CON) with AC coupling. Both interfaces are supported simultaneously in hardware, but only one may be active per design.

How does DP83867ERGZT handle ESD protection on Ethernet ports?

DP83867ERGZT exceeds IEC 61000-4-2 Level 4 with ±8000V contact discharge on all eight MDI pins (TD_P_A through TD_M_D), verified per HBM testing. This robustness is achieved through proprietary on-die protection structures - no external TVS diodes are required for basic compliance. The device also integrates 50Ω MDI termination resistors, further reducing external component count while maintaining signal integrity under ESD stress conditions.