Overview
The TLK105LRHBT, produced by Texas Instruments, is a single-port Ethernet Physical Layer (PHY) transceiver designed for industrial temperature applications. It supports both 10Base-T and 100Base-TX signaling, integrating all the physical-layer functions necessary for transmitting and receiving data over standard twisted-pair cables. The device is compatible with the Media Independent Interface (MII) and Reduced Media Independent Interface (RMII), allowing direct connection to a Media Access Controller (MAC). It is notable for its low-power consumption, power-supply flexibility, and robust operation over CAT 5 twisted-pair wiring, adhering to IEEE 802.3 standards with high margins against cross-talk and alien noise.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Power Consumption (Single Supply) | < 205 mW (PHY), 275 mW (With Center Tap) | mW |
| Power Consumption (Dual Supplies) | < 126 mW (PHY), 200 mW (With Center Tap) | mW |
| Supply Voltage | 3.0 - 3.6 | V |
| I/O Voltage Range | 3.3V, 2.5V, 1.8V | V |
| Maximum Die Temperature | 125 | °C |
| Storage Temperature | -65 to 150 | °C |
| Package Type | 32-pin VQFN (5 mm x 5 mm) | |
| ESD Protection | 16 kV (HBM) | kV |
Key Features
- Low-power consumption with programmable power back off to reduce PHY power up to 20% in systems with shorter cables.
- IEEE 1588 SFD indication for time stamping by a controller or processor.
- Low deterministic latency supporting IEEE 1588 implementation.
- Cable diagnostics and programmable fast link down modes with <10 µs reaction time.
- Variable I/O voltage range: 3.3V, 2.5V, 1.8V.
- Auto-MDIX for 10/100 Mbps, energy detection mode, and MII/RMII capabilities.
- Error-free 100Base-T operation up to 150 meters and 10Base-T operation up to 300 meters under typical conditions.
- Serial management interface, IEEE 802.3u auto-negotiation, and parallel detection.
- Integrated ANSI X3.263 compliant TP-PMD physical sublayer with adaptive equalization and baseline wander compensation.
- Programmable LED support for link and activity indication.
- 10/100 Mbps packet built-in self-test (BIST).
Applications
- Industrial networks and factory automation.
- Motor and motion control systems.
- General embedded applications requiring robust Ethernet connectivity.
Q & A
- What is the TLK105LRHBT?
The TLK105LRHBT is a single-port Ethernet Physical Layer (PHY) transceiver produced by Texas Instruments, designed for industrial temperature applications.
- What are the supported Ethernet signaling standards?
The device supports both 10Base-T and 100Base-TX signaling.
- What are the power consumption characteristics?
The device consumes less than 205 mW (PHY) and 275 mW (with center tap) with a single supply, and less than 126 mW (PHY) and 200 mW (with center tap) with dual supplies.
- What is the I/O voltage range of the TLK105LRHBT?
The I/O voltage range is 3.3V, 2.5V, and 1.8V.
- Does the TLK105LRHBT support IEEE 1588?
Yes, it supports IEEE 1588 with SFD indication for time stamping and low deterministic latency.
- What is the maximum cable length for error-free operation?
Error-free operation is supported up to 150 meters for 100Base-T and up to 300 meters for 10Base-T.
- What interfaces does the TLK105LRHBT support?
The device supports MII and RMII interfaces for connection to a Media Access Controller (MAC).
- Does the TLK105LRHBT have built-in diagnostic features?
Yes, it includes cable diagnostics and programmable fast link down modes.
- What is the package type of the TLK105LRHBT?
The device is packaged in a 32-pin VQFN (5 mm x 5 mm).
- What level of ESD protection does the TLK105LRHBT offer?
The device offers 16 kV HBM ESD protection on RD± and TD± pins.
