DP83640TVVX/NOPB - IEEE 1588 PTP Ethernet PHY | Texas Instruments
MPN: DP83640TVVX/NOPB ✓ ActiveDP83640TVVX/NOPB Overview
An Ethernet physical-layer transceiver, or PHY, converts between digital Ethernet media-independent interface signals and analog signals carried over twisted-pair cabling. The DP83640 belongs to the interface-IC hierarchy and adds Precision Time Protocol support to the conventional Ethernet PHY function. This makes it relevant to industrial automation, communication systems, test equipment, and embedded controllers that need accurate timing across an Ethernet network.
The DP83640 supports 10 Mb/s and 100 Mb/s operation on one Ethernet port. Its selectable MII or RMII interface allows it to connect to controllers with different media-access architectures. IEEE 1588 PTP support is the central differentiating function, enabling high-precision time synchronization across Ethernet-connected equipment. Cable diagnostics and JTAG 1149.1 support add commissioning and production-test value without changing the basic one-port PHY architecture.
The 3.3 V supply range suits industrial systems operating from regulated 3.3 V rails. The 48-pin LQFP package provides the external network magnetics, clock, interface, control, and power connections required by a conventional copper Ethernet PHY. Its -40°C to +85°C operating range covers industrial environments where commercial-temperature network PHYs may provide insufficient margin. The manufacturer describes the device as an active DP83640-series part suitable for precision timing in industrial automation and communications.
Typical deployments include factory automation controllers, industrial Ethernet switches, synchronized data-acquisition equipment, networked sensors, and communication equipment requiring deterministic timing. The device can also serve as the copper Ethernet interface in a controller where the host processor communicates through MII or RMII and requires PTP-assisted synchronization across connected nodes.
For a new design, use the manufacturer pin-description table and application information to assign power, clock, magnetic-interface, and host-interface signals. Preserve the recommended decoupling and controlled-impedance layout around the PHY and Ethernet magnetics. Confirm crystal or oscillator requirements, reset behavior, interrupt handling, and PTP clock-source implementation before finalizing the surrounding circuitry.
This product page combines package, interface, timing-standard, and operating-range information with pin-compatible family alternatives and practical design guidance. It helps engineers distinguish the DP83640TVVX/NOPB from ordinary Ethernet PHYs by focusing on the combination of 10/100 Mb/s operation, IEEE 1588 PTP, MII/RMII support, and the industrial-temperature 48-LQFP footprint.
Drop-in alternatives for DP83640TVVX/NOPB — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with DP83640TVVX/NOPB (same form factor and footprint) — differing in Fiber Support, Host Interface, Number of Ports, Operating Temperature Range.
DP83640TVV/NOPB
✅ Drop-InContact for price
View Datasheet →DP83640TVVX/NOPB Specifications
| Device Type | IEEE 1588 Precision Time Protocol Ethernet PHY transceiver |
| Ethernet Data Rate | 10 Mb/s or 100 Mb/s |
| Number of Ports | 1 port |
| Host Interface | MII or RMII |
| Supply Voltage Range | 3.0 V to 3.6 V |
| Operating Temperature Range | -40°C to +85°C |
| Package | 48-LQFP (PT), 7 mm × 7 mm |
| Number of Pins | 48 pins |
| Mounting Type | Surface mount |
| Precision Time Protocol | IEEE 1588 PTP |
| Cable Diagnostics | Supported |
| Debug Interface | JTAG 1149.1 |
| Fiber Support | FX support |
| Number of Drivers/Receivers | 1 transceiver |
| Logic Voltage | 3.3 V |
DP83640TVVX/NOPB 48-lqfp (pt), 7 mm × 7 mm Pin Configuration Guide
Pin configuration for DP83640TVVX/NOPB (48-lqfp (pt), 7 mm × 7 mm package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for DP83640TVVX/NOPB.
Refer to the datasheet for full pin configuration.
Typical Applications
DP83640TVVX/NOPB is suitable for 6 applications: Industrial Automation Controllers, Synchronized Test and Measurement, Industrial Ethernet Gateways, Networked Sensor Controllers, Precision Timing Communication Equipment, Embedded Data Acquisition Systems.
Industrial Automation Controllers
The DP83640TVVX/NOPB fits industrial automation controllers that exchange 10/100 Mb/s Ethernet data while coordinating events across distributed machinery. Its IEEE 1588 PTP capability provides a path to precise clock synchronization, while the -40°C to +85°C operating range covers industrial temperature requirements. The PHY can connect to a controller processor through MII or RMII and then to external Ethernet magnetics through its single-port copper interface. Designers should use the manufacturer application circuit to implement stable 3.0 V to 3.6 V supply decoupling, clocking, reset, and PTP clock-source logic.
Recommended
Synchronized Test and Measurement
The DP83640TVVX/NOPB is appropriate for synchronized test equipment that combines ordinary Ethernet communication with IEEE 1588 timing functions. The 10/100 Mb/s channel provides connectivity to controllers, workstations, or synchronization infrastructure, while PTP support helps align measurements distributed across the network. MII offers a parallel controller connection for designs with sufficient I/O, and RMII can reduce interface pin count. Timing accuracy still depends on the system clock, network topology, PHY configuration, and end-to-end synchronization implementation described by Texas Instruments.
Recommended
Industrial Ethernet Gateways
A gateway built around the DP83640TVVX/NOPB can bridge a legacy controller to a 10/100 Mb/s Ethernet network while adding synchronization capability. The device's single-port PHY and selectable MII or RMII interface simplify connection to embedded processors with different host-bus architectures. IEEE 1588 PTP is valuable when multiple gateways, sensors, or actuators must coordinate events on a shared time base. The 48-LQFP package requires careful high-speed layout around clock and interface signals, while the Ethernet channel requires the magnetics and routing techniques specified by the manufacturer.
Recommended
Networked Sensor Controllers
The DP83640TVVX/NOPB can provide the wired network connection for an embedded sensor controller that needs synchronized measurements or coordinated actuator updates. Its 10 Mb/s or 100 Mb/s capability accommodates typical industrial sensor traffic, and the industrial -40°C to +85°C range supports harsh operating environments. The host processor can use RMII to limit parallel signaling where board space is constrained. Designers should account for Ethernet isolation requirements, magnetics, connector creepage, cable diagnostics, and the accuracy of the PTP clock architecture rather than treating PHY timing features as a substitute for system-level synchronization design.
Recommended
Precision Timing Communication Equipment
The DP83640TVVX/NOPB is specifically suited to communication equipment that must transport data while participating in an IEEE 1588 synchronized network. Its single 10/100 Mb/s Ethernet channel connects the timing-enabled endpoint, while MII or RMII accommodates the host processor interface. Texas Instruments positions the DP83640 for accurate, reliable synchronization in industrial automation and communications. The implementation should preserve the manufacturer's recommended clock source and isolation arrangement, maintain controlled-impedance routing, and validate timestamp behavior across complete network segments rather than relying on local PHY support alone.
Recommended
Embedded Data Acquisition Systems
The DP83640TVVX/NOPB fits embedded data-acquisition systems that need Ethernet transport and coordinated timing across multiple measurement channels. A 10/100 Mb/s link can carry samples and commands, while IEEE 1588 PTP provides a timing mechanism for aligning acquisition events. The 48-LQFP package and 3.0 V to 3.6 V operating range suit regulated embedded systems, and RMII can simplify host-controller routing where pin count is constrained. Engineers should budget PCB area for magnetics, isolate network interfaces as required, and verify synchronization performance with the complete host clocking and software architecture.
Recommended
Recommended Products Summary
Engineering reference data for DP83640TVVX/NOPB — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DP83640TVV/NOPB |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Package | 48-LQFP (PT) | 48-LQFP (PT) |
| Device Type | IEEE 1588 PTP Ethernet PHY transceiver | IEEE 1588 PTP Ethernet PHY transceiver |
| Number of Ports | 1 | 1 |
| Data Rate | 10/100 Mb/s | 10/100 Mb/s |
| Host Interface | MII, RMII | MII, RMII |
| Operating Temperature | -40°C to +85°C | -40°C to +85°C |
| Cable Diagnostics | Supported | Supported |
| Debug Interface | JTAG 1149.1 | JTAG 1149.1 |
Key Differentiators
- Integrated IEEE 1588 precision time synchronization (vs DP83640TVV/NOPB)
- Identical 48-LQFP board footprint (vs DP83640TVV/NOPB)
- Single-port industrial Ethernet implementation (vs DP83640TVV/NOPB)
Design Notes
Place all local supply-decoupling capacitors immediately across the DP83640 power and ground pins, following the capacitor values and placement shown in the manufacturer application circuit. Keep the 3.0 V to 3.6 V supply routing short and use a quiet return path beneath the device. Clock and MII/RMII traces should be routed as controlled-impedance nets, with their length, topology, and termination determined by the host controller and external clock architecture.
Separate the Ethernet magnetic-interface region from clocks, PTP-sensitive traces, and other high-speed circuitry. Follow the manufacturer layout guidance for the differential pair between the PHY and Ethernet magnetics, including the 50-ohm impedance implementation, pair geometry, and ground reference. Keep copper and components away from the isolation barrier unless the finished system design explicitly requires a defined placement. Review the complete vendor reference layout before releasing the PCB.
Do not treat IEEE 1588 PHY support as guaranteed end-to-end synchronization without designing the clock source, PTP profile, network topology, software stack, and measurement method. Also verify the ordering-option differences between DP83640TVVX/NOPB and DP83640TVV/NOPB against their manufacturer pin tables. The cross-reference data establishes family-level compatibility, but it does not replace checking reset, strap, clock, interrupt, and analog-interface assignments on the exact suffix.
Compliance Information
The manufacturer product and part-detail pages identify the DP83640 as an active industrial Ethernet PHY, but the available information does not state the detailed RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status.
