Texas Instruments DP83867CSRGZR

Overview

DP83867CSRGZR from Texas Instruments is a commercial-grade 10/100/1000BASE-T Ethernet PHY transceiver in a 48-pin VQFN package, supporting RGMII and SGMII MAC interfaces, delivering <90ns TX / <290ns RX latency, 457mW full-power operation, and IEEE 1588 Start of Frame detection for industrial automation timing-critical links.

For engineers reviewing the DP83867CSRGZR datasheet, DP83867CSRGZR pinout, DP83867CSRGZR application, or DP83867CSRGZR equivalent, this page delivers verified electrical specs, validated RGMII/SGMII interface timing, confirmed 0°C to +70°C operating range, and real-world industrial Ethernet implementation guidance - no generic timing or interface assumptions.

Technical Context

The DP83867CSRGZR implements full IEEE 802.3 10BASE-Te, 100BASE-TX, and 1000BASE-T compliance with integrated PMD sublayers and on-die MDI termination resistors. It supports dual-mode MAC interfacing: RGMII with programmable 16-delay modes (TX/RX) and SGMII with 625MHz differential clock output.

Its architecture includes dedicated hardware for IEEE 1588 timestamping via Start of Frame Detect, Wake-on-LAN packet recognition, RJ45 mirror mode, and cable diagnostics. The device uses a 25MHz crystal or oscillator input and provides a configurable 25MHz or 125MHz synchronized clock output.

Key Specifications

Pinout & Package

DP83867CSRGZR is housed in a 7mm × 7mm RGZ (VQFN-48) package with exposed thermal pad (DAP = GND). Pin functions are validated per TI SNLS504G Rev JUNE 2026, including dual-role MDI differential pairs (TD_P_A/TD_M_A through TD_P_D/TD_M_D), RGMII/SGMII data/clock lanes, JTAG, MDIO/MDC, GPIOs, LEDs, and multi-supply rails (VDD1P0, VDDA1P8, VDDA2P5, VDDIO).

Key Features

Applications

Equivalent & Alternatives

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

Compared with DP83867ISRGZR, the DP83867CSRGZR trades extended temperature range for lower cost and qualification scope - ideal for indoor, climate-controlled industrial compute. Versus Marvell 88E1512, DP83867CSRGZR delivers higher integration (on-die termination), stronger ESD immunity, and hardware-accelerated diagnostics - critical for ruggedized deployments.

Availability

DP83867CSRGZR is available at Aetrix Electronics and suitable for industrial motor drives, factory automation controllers, test and measurement equipment, and industrial embedded computing requiring stable component supply across multi-year production cycles.

Supply support for DP83867CSRGZR 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 automotive/industrial qualification expertise.

The DP83867 product line targets robust, low-latency industrial Ethernet connectivity - designed specifically for TSN, PROFINET, EtherCAT, and IEEE 1588 time-critical applications in harsh electromagnetic environments.

FAQ

What is the maximum operating temperature for DP83867CSRGZR?

The DP83867CSRGZR is rated for commercial temperature operation from 0°C to +70°C ambient. Its junction temperature must not exceed +90°C under normal conditions, as specified in the Recommended Operating Conditions table of the SNLS504G datasheet. This makes DP83867CSRGZR appropriate for climate-controlled industrial enclosures but not for extended-temperature environments - for those, the DP83867ISRGZR (–40°C to +85°C) is required.

Does DP83867CSRGZR support both RGMII and SGMII interfaces simultaneously?

No, DP83867CSRGZR supports RGMII or SGMII - not both simultaneously. The interface mode is selected at power-up via hardware configuration pins (e.g., MODE[1:0]) or software register settings. RGMII uses single-ended GTX_CLK/RX_CLK and 4-bit data buses, while SGMII employs differential SGMII_SIP/SON and SGMII_COP/CON signals at 625MHz. Both modes share the same physical pins in multiplexed roles.

What clock sources does DP83867CSRGZR require?

DP83867CSRGZR requires a 25MHz reference clock applied to the XI pin - either from a 25MHz crystal (with XO left floating) or a 25MHz oscillator (with XO unused). It also generates a synchronized 25MHz or 125MHz CLK_OUT signal for system timing distribution, and outputs a 625MHz differential clock in SGMII mode. No external 125MHz source is needed for RGMII operation.

How does DP83867CSRGZR implement IEEE 1588 timestamping?

DP83867CSRGZR provides hardware-assisted IEEE 1588 timestamping via Start of Frame Detect (SFD), identifying the precise arrival of the first bit of an Ethernet frame. It achieves ≤16ns SFD variation at 100Mbps and ≤8ns at 1000Mbps (leader/follower), enabling sub-microsecond timestamp accuracy. The SFD pulse is accessible internally for host processor timestamp latching - no software parsing or MAC-layer delay compensation is required for basic PTP event detection.

Is DP83867CSRGZR pin-compatible with DP83867ISRGZR or DP83867ERGZR?

Yes, DP83867CSRGZR is pin-compatible with DP83867ISRGZR and DP83867ERGZR - all three share identical RGZ (VQFN-48) packaging, pinout, and footprint. Differences are limited to temperature grade (0°C–70°C vs –40°C–85°C vs –40°C–105°C) and MDI-pin ESD ratings (±6kV vs ±8kV). PCB designs can use any variant interchangeably, provided thermal and reliability requirements align with the selected grade.