Texas Instruments DP83867ISRGZR

Overview

DP83867ISRGZR from Texas Instruments is an industrial-grade 10/100/1000BASE-T Ethernet physical layer transceiver with RGMII/SGMII MAC interface, 457 mW full-power consumption, <90 ns TX / <290 ns RX latency, and 8 kV IEC 61000-4-2 ESD protection on MDI pins. It supports IEEE 1588 Start of Frame detection and Time-Sensitive Networking (TSN) for deterministic industrial Ethernet applications.

For engineers reviewing the DP83867ISRGZR datasheet, DP83867ISRGZR pinout, DP83867ISRGZR application, or DP83867ISRGZR equivalent, key selection criteria include industrial temperature range (–40°C to +85°C), integrated MDI termination, programmable RGMII delay modes, configurable I/O voltage (1.8V/2.5V/3.3V), and Wake-on-LAN support.

Technical Context

The DP83867ISRGZR implements a full IEEE 802.3-compliant PHY layer with integrated PMD sublayers for 10BASE-Te, 100BASE-TX, and 1000BASE-T operation. Its architecture includes dual-mode MAC interface (RGMII and SGMII), synchronous Ethernet clock output (25 MHz or 125 MHz), and hardware-accelerated Start of Frame Detection for IEEE 1588 timestamping.

It features embedded analog front-end with differential MDI drivers/receivers, programmable MAC interface termination impedance, and 16 selectable RGMII delay modes to compensate for PCB trace skew. The device uses a 48-pin VQFN (RGZ) package with dedicated analog power domains (VDDA2P5, VDDA1P8, VDD1P0) and configurable I/O supply (VDDIO).

Key Specifications

Pinout & Package

The DP83867ISRGZR is housed in a 7 mm × 7 mm, 48-pin VQFN (RGZ) package with exposed thermal pad (DAP = GND) for enhanced thermal performance in industrial applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DP83867ISRGZR, the Marvell 88E1512 offers higher pin count and commercial thermal margin but omits industrial ESD hardening and TSN timing features, while the Microchip LAN8742AI lacks gigabit capability and deterministic latency-making DP83867ISRGZR the sole option meeting full industrial 10/100/1000BASE-T + TSN requirements in a compact VQFN.

Availability

DP83867ISRGZR is available at Aetrix Electronics and suitable for industrial motor drives, factory automation controllers, test and measurement equipment, and wireless backhaul systems requiring stable component supply across extended lifecycle programs.

Supply support for DP83867ISRGZR 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, automotive, and communications markets.

The DP83867 product line delivers robust, low-latency Ethernet PHY solutions optimized for deterministic industrial networking, TSN compliance, and harsh-environment reliability-targeting factory automation, motor control, and precision instrumentation.

FAQ

What is the operating temperature range of the DP83867ISRGZR?

The DP83867ISRGZR is rated for industrial temperature operation from –40°C to +85°C. This range is validated per JEDEC JESD22-A104 and supports deployment in uncontrolled factory environments, outdoor enclosures, and motor drive cabinets where ambient temperatures exceed commercial-grade limits. The DP83867ISRGZR part number specifically denotes the industrial-grade variant, distinct from the commercial DP83867CSRGZR (0°C to +70°C) and extended DP83867ERGZR (–40°C to +105°C) versions.

Does the DP83867ISRGZR support both RGMII and SGMII interfaces?

Yes, the DP83867ISRGZR supports both RGMII and SGMII MAC interfaces simultaneously. RGMII operates with GTX_CLK and RX_CLK at 2.5/25/125 MHz and uses single-ended TX_D0–TX_D3 and RX_D0–RX_D3 signals, while SGMII employs differential SGMII_SIP/SON and SGMII_COP/CON lanes running at 625 MHz. Interface selection is configured via hardware strapping pins or software register settings, and both modes share the same MDI physical layer and management interface (MDC/MDIO).

How does the DP83867ISRGZR achieve IEEE 1588 time stamping accuracy?

The DP83867ISRGZR achieves IEEE 1588 time stamping accuracy through hardware-accelerated Start of Frame (SFD) detection with ±4 ns receive variation at 1000 Mbps. It provides precise SFD pulse timing relative to the recovered RX_CLK, enabling external MAC or timestamping unit to latch packet arrival with sub-nanosecond jitter. The device also outputs a synchronous 25 MHz or 125 MHz clock aligned to the Ethernet frame boundary, eliminating phase drift between PHY and MAC timing domains-critical for TSN-compliant determinism in DP83867ISRGZR-based systems.

What power supply configurations does the DP83867ISRGZR support?

The DP83867ISRGZR supports two primary power configurations: a 2-supply setup (VDDA2P5 + VDDIO) consuming 495 mW, or an optimized 3-supply setup (VDDA2P5 + VDD1P0 + VDDIO) reducing total power to 457 mW. VDDA2P5 supplies the analog front-end (2.5 V ±5%), VDD1P0 powers the digital core (1.0 V ±5%), and VDDIO sets I/O voltage (configurable 1.8 V / 2.5 V / 3.3 V ±5%). Each supply requires local 1 µF + 0.1 µF decoupling per TI layout guidelines to ensure signal integrity and EMI compliance in DP83867ISRGZR designs.

Can the DP83867ISRGZR operate without an external crystal?

No, the DP83867ISRGZR requires a 25 MHz external crystal or oscillator connected to XI/XO pins for fundamental clock generation. The device does not include an internal oscillator and relies on this 25 MHz reference to synthesize all internal clocks-including the 125 MHz GTX_CLK for RGMII and 625 MHz SGMII clock. While CLK_OUT can drive other devices, it is derived from the XI input and cannot substitute for the primary 25 MHz source. Omission of the crystal will prevent PHY initialization and link establishment in any DP83867ISRGZR implementation.