Texas Instruments DP83867ISRGZT

Overview

DP83867ISRGZT 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-designed for time-critical industrial automation and motor drive applications.

For engineers reviewing the DP83867ISRGZT datasheet, DP83867ISRGZT pinout, DP83867ISRGZT application, or DP83867ISRGZT equivalent, key selection considerations include its –40°C to +85°C operating range, integrated MDI termination, IEEE 1588 Start of Frame detection, 16 programmable RGMII delay modes, and configurable 1.8V/2.5V/3.3V I/O voltage support.

Technical Context

The DP83867ISRGZT implements a fully compliant IEEE 802.3 PHY with integrated PMD sublayers for 10BASE-Te, 100BASE-TX, and 1000BASE-T operation over twisted-pair media. It supports both RGMII (with internal 1.8 ns skew compensation) and SGMII (625 MHz differential clock output) interfaces, enabling deterministic low-latency data path timing.

Its architecture includes precision clock synchronization features: synchronous Ethernet clock output (25 MHz or 125 MHz), Start of Frame Detect for IEEE 1588 timestamping, and RJ45 mirror mode for diagnostics. The device integrates bias resistor connection (RBIAS), programmable MAC interface termination impedance, and Wake-on-LAN packet detection for system-level power management.

Key Specifications

Pinout & Package

DP83867ISRGZT uses a 48-pin VQFN (RGZ) package, 7 mm × 7 mm, 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 Marvell 88E1512-B0-NNB2C000 and Microchip LAN8742AI-ABZ, DP83867ISRGZT delivers industrial-grade reliability, integrated signal conditioning, and native TSN readiness-making it the sole option among the three for deterministic Gigabit Ethernet in harsh environments.

Availability

DP83867ISRGZT 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 extended lifecycle programs.

Supply support for DP83867ISRGZT 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 over 90 years of innovation in industrial and automotive electronics.

The DP83867 product line was designed specifically for robust, low-latency Ethernet connectivity in industrial automation, motion control, and time-sensitive networking applications-emphasizing ESD immunity, thermal stability, and IEEE 1588 hardware acceleration.

FAQ

What is the operating temperature range of the DP83867ISRGZT?

The DP83867ISRGZT is rated for –40°C to +85°C operation, qualifying it for industrial environments including motor drives, PLCs, and outdoor edge gateways. This range is confirmed in TI's SNLS504G datasheet Section 4 (Device Comparison) and Section 6.3 (Recommended Operating Conditions). The "IS" suffix explicitly denotes the industrial temperature grade, distinguishing it from commercial (CS) and extended (E) variants. DP83867ISRGZT maintains full 10/100/1000BASE-T functionality across this entire range without derating.

Does DP83867ISRGZT support IEEE 1588 Precision Time Protocol?

Yes, DP83867ISRGZT supports IEEE 1588 via hardware-accelerated Start of Frame (SFD) detection, with specified receive SFD variation of ±8 ns at 1000 Mbps (Section 6.12). It provides synchronous clock outputs (25 MHz or 125 MHz) and precise latency values (<90 ns TX, <290 ns RX) required for transparent clock and boundary clock implementations. DP83867ISRGZT does not include full PTP stack processing but delivers the critical PHY-layer timing primitives needed for SoC- or FPGA-based PTP engines.

What MAC interfaces does DP83867ISRGZT support?

DP83867ISRGZT supports both Reduced Gigabit Media Independent Interface (RGMII) and Serial Gigabit Media Independent Interface (SGMII). RGMII operates with GTX_CLK and RX_CLK at 125 MHz (1000 Mbps), 25 MHz (100 Mbps), or 2.5 MHz (10 Mbps), while SGMII uses 625 MHz differential clock/data pairs (SGMII_SIP/SON/COP/CON). Both interfaces are electrically validated and documented in Sections 5.1 and 6.9–6.10 of the SNLS504G datasheet. DP83867ISRGZT does not support GMII, MII, or RMII.

How does DP83867ISRGZT handle ESD protection on Ethernet ports?

DP83867ISRGZT exceeds IEC 61000-4-2 Level 4 ESD immunity with ±8 kV contact discharge on all eight MDI pins (TD_P_A/M_A through TD_P_D/M_D), as verified in Section 6.2 of the datasheet. This eliminates the need for external TVS diodes in most industrial designs. Non-MDI pins are rated at ±2.5 kV HBM. The robust front-end design allows direct connection to magnetics without additional protection circuitry-reducing BOM cost and PCB area while ensuring compliance with EN61000-6-2 immunity standards.

Is DP83867ISRGZT pin-compatible with other members of the DP83867 family?

Yes, DP83867ISRGZT shares identical 48-pin VQFN (RGZ) packaging, pinout, and footprint with DP83867CSR GZ and DP83867ERGZ. All three variants use the same mechanical outline, thermal pad configuration, and signal-to-pin mapping per Figure 5-1 and Table 5-1. Differences are limited to temperature grade, ESD rating on MDI pins (±8 kV for IS/ERGZ vs. ±6 kV for CSR GZ), and junction temperature limits-enabling drop-in replacement during design-in or qualification without PCB revision.