Overview
The TLK1221RHARG4 is a gigabit Ethernet transceiver produced by Texas Instruments. This device is designed for high-speed, full-duplex point-to-point data transmissions, supporting data rates from 0.6 Gbps to 1.3 Gbps. It is compliant with the IEEE 802.3 Gigabit Ethernet specification and is particularly suited for applications in Ethernet passive optical networks (EPON), Gigabit Ethernet switches and routers, and wireless base stations. The TLK1221RHARG4 is known for its low power consumption, compact package size, and comprehensive suite of built-in testability features.
Key Specifications
| Parameter | Value |
|---|---|
| Data Rate | 0.6 Gbps to 1.3 Gbps |
| Supply Voltage | 2.5 V |
| Power Consumption | Typical 250 mW at 1.25 Gbps |
| Operating Temperature | -40°C to 85°C |
| Package Type | 40-pin 6-mm × 6-mm QFN PowerPAD™ |
| Interface Compatibility | LVPECL-Compatible Differential I/O |
| ESD Protection | CDM: 1 kV, HBM: 2 kV |
| Input Voltage Range (TTL) | -0.5 to 4 V |
| Input Voltage Range (Other) | -0.3 to VDD + 0.3 V |
Key Features
- Low power consumption: Typical 250 mW at 1.25 Gbps
- LVPECL-Compatible Differential I/O on high-speed interface
- Single monolithic PLL design
- Support for 10-bit interface (TBI mode)
- Fast relock times: Less than 256 ns (typical)
- No external filter capacitors required
- Comprehensive suite of built-in testability: Loopback, PRBS generation and verification
- Hot plug protection
- 3.3-V tolerant on LVTTL inputs
- Industrial temperature range: -40°C to 85°C
Applications
The TLK1221RHARG4 is designed for various high-speed data transmission applications, including:
- Ethernet passive optical networks (EPON) and Gigabit Ethernet passive optical network (GEPON) systems such as OLT and ONU systems
- Gigabit Ethernet switches and routers
- Wireless base stations
- Point-to-point baseband data transmission over controlled-impedance media such as printed-circuit board traces, copper cables, or fiber-optical media
Q & A
- What is the typical data rate of the TLK1221RHARG4?
The TLK1221RHARG4 operates at data rates from 0.6 Gbps to 1.3 Gbps, with a typical rate of 1.25 Gbps. - What is the power consumption of the TLK1221RHARG4?
The typical power consumption is 250 mW at 1.25 Gbps. - What is the operating temperature range of the TLK1221RHARG4?
The device operates from -40°C to 85°C. - What type of package does the TLK1221RHARG4 use?
The device is housed in a 40-pin 6-mm × 6-mm QFN PowerPAD™ package. - Does the TLK1221RHARG4 require external filter capacitors?
No, the TLK1221RHARG4 does not require external filter capacitors. - What are the key testability features of the TLK1221RHARG4?
The device includes loopback testing, PRBS generation and verification, and an enable function for ultralow-power idle state. - Is the TLK1221RHARG4 hot plug capable?
Yes, the TLK1221RHARG4 is designed to be hot-plug capable. - What are the primary applications of the TLK1221RHARG4?
The primary applications include EPON/GEPON systems, Gigabit Ethernet switches and routers, and wireless base stations. - How does the TLK1221RHARG4 handle clock extraction and data serialization?
The device uses a single monolithic PLL design and supports the 10-bit interface (TBI mode) for data serialization and deserialization, extracting clock information from the input serial stream. - What is the ESD protection level of the TLK1221RHARG4?
The device has an ESD protection level of CDM: 1 kV, HBM: 2 kV.
