Overview
The TLK1221RHAT is a gigabit Ethernet transceiver produced by Texas Instruments. This device is designed to facilitate high-speed full-duplex point-to-point data transmissions, adhering to the timing requirements of the IEEE 802.3 Gigabit Ethernet specification. It operates at data rates ranging from 0.6 Gbps to 1.3 Gbps and is particularly suited for applications requiring high-speed data transmission over various media, including printed-circuit board traces, copper cables, and fiber-optical media.
Key Specifications
| Specification | Value |
|---|---|
| Data Rate | 0.6 to 1.3 Gbps |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | 40-Pin VQFN (RHA) |
| Supply Voltage | 2.5 V |
| I/O Voltage Compatibility | 3.3 V tolerant on LVTTL inputs |
| Power Consumption | 250 mW (typ) at 1.25 Gbps |
| Interface | 10-bit interface (TBI), LVPECL-compatible differential I/O |
| PLL Design | Single monolithic PLL |
| Relock Time |
Key Features
- 0.6- to 1.3-Gigabits Per Second (Gbps) Serializer/Deserializer
- Low Power Consumption: 250 mW (typ) at 1.25 Gbps
- LVPECL-Compatible Differential I/O on High-Speed Interface
- Single Monolithic PLL Design
- Support For 10-Bit Interface (TBI)
- Fast Relock Times Less Than 256 ns (typ), suitable for EPON/GEPON applications
- Receiver Differential-Input Thresholds: 200-mV Minimum
- Industrial Temperature Range: -40°C to 85°C
- IEEE 802.3 Gigabit Ethernet Compliant
- Designed in 0.25 µm CMOS Technology
- No External Filter Capacitors Required
- Comprehensive Suite of Built-In Testability, including loopback and PRBS generation and verification
- Hot Plug Protection
- 40-Pin 6-mm × 6-mm QFN PowerPAD™ Package
Applications
The TLK1221RHAT is primarily used in point-to-point baseband data transmission applications. It is suitable for use in various media, including printed-circuit board traces, copper cables, and fiber-optical media. Key applications include:
- OLT (Optical Line Terminal) and ONU (Optical Network Unit) systems in EPON/GEPON networks
- Gigabit Ethernet interfaces requiring high-speed data transmission
- Industrial and commercial networking equipment
- High-speed data communication systems over controlled-impedance media
Q & A
- What is the typical data rate of the TLK1221RHAT?
The TLK1221RHAT operates at a typical data rate of 1.25 Gbps, supporting rates from 0.6 Gbps to 1.3 Gbps. - What is the operating temperature range of the TLK1221RHAT?
The operating temperature range is from -40°C to 85°C. - What type of package does the TLK1221RHAT come in?
The TLK1221RHAT is housed in a 40-pin VQFN (RHA) package. - What is the supply voltage for the TLK1221RHAT?
The supply voltage is 2.5 V, with the I/O section being 3.3 V tolerant on LVTTL inputs. - How much power does the TLK1221RHAT consume at 1.25 Gbps?
The power consumption is typically 250 mW at 1.25 Gbps. - Is the TLK1221RHAT compliant with IEEE 802.3 Gigabit Ethernet specifications?
Yes, the TLK1221RHAT is IEEE 802.3 Gigabit Ethernet compliant. - What is the relock time of the TLK1221RHAT?
The relock time is less than 256 ns (typ). - Does the TLK1221RHAT require external filter capacitors?
No, the TLK1221RHAT does not require external filter capacitors. - Is the TLK1221RHAT hot-plug capable?
Yes, the TLK1221RHAT is designed to be hot-plug capable. - What are the primary applications of the TLK1221RHAT?
The primary applications include OLT and ONU systems in EPON/GEPON networks, gigabit Ethernet interfaces, and high-speed data communication systems over controlled-impedance media.
