Overview
The DS92LV18TVVX/NOPB is a Serializer/Deserializer (SERDES) pair designed by Texas Instruments. This component transparently translates an 18-bit parallel bus into a BLVDS (Bus Low Voltage Differential Signaling) serial stream with embedded clock information. This translation simplifies the transfer of an 18-bit or less bus over PCB traces and cables, eliminating skew problems between parallel data and clock paths. It also reduces system costs by narrowing data paths, which in turn reduces the number of PCB layers, cable width, and connector size and pins.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 80-Pin LQFP | |
| Operating Temperature Range | -40 to 85 | °C |
| Data Rate | 15-66 MHz | |
| Full Duplex Throughput | 2.376 Gbps | |
| Supply Voltage | 3.15 to 3.45 | V |
| Input Type | BLVDS, LVTTL | |
| Output Type | BLVDS, LVDS, LVTTL | |
| Number of Inputs/Outputs | 18/1 (Serializer), 1/18 (Deserializer) | |
| Power Consumption (Typical) | 90mA (Transmitter), 100mA (Receiver) at 66 MHz | mA |
| ESD Protection | >2.0kV HBM |
Key Features
- 15–66 MHz 18:1/1:18 Serializer/Deserializer with full duplex throughput of 2.376 Gbps
- Independent Transmitter and Receiver Operation with separate clock, enable, and power down pins
- Hot Plug Protection (Power Up High Impedance) and Synchronization (Receiver Locks to Random Data)
- Wide ±5% Reference Clock Frequency Tolerance for easy system design using locally-generated clocks
- Line and Local Loopback Modes for system and device test capability
- Robust BLVDS serial transmission across backplanes and cables for low EMI
- No external coding required
- Internal PLL, no external PLL components required
- Single +3.3V power supply
- Low power consumption: 90mA (typ) transmitter, 100mA (typ) receiver at 66 MHz with PRBS-15 pattern
- ±100 mV receiver input threshold
- Loss of Lock Detection and Reporting Pin
- Compact, standard 80-Pin LQFP package
Applications
The DS92LV18TVVX/NOPB is suitable for various high-speed data transmission applications, including:
- High-speed data transfer over PCB traces and cables
- Backplane and cable interconnects
- Industrial and automotive systems requiring robust and reliable data transmission
- Redundant data paths where power conservation is critical
- Systems requiring low EMI and noise
Q & A
- What is the primary function of the DS92LV18TVVX/NOPB?
The primary function is to translate an 18-bit parallel bus into a BLVDS serial stream with embedded clock information and vice versa.
- What is the operating temperature range of the DS92LV18TVVX/NOPB?
The operating temperature range is -40°C to 85°C.
- What is the data rate supported by the DS92LV18TVVX/NOPB?
The data rate supported is 15-66 MHz.
- What is the full duplex throughput of the DS92LV18TVVX/NOPB?
The full duplex throughput is 2.376 Gbps.
- What type of power supply does the DS92LV18TVVX/NOPB require?
The component requires a single +3.3V power supply.
- Does the DS92LV18TVVX/NOPB require external PLL components?
No, it has an internal PLL and does not require external PLL components.
- What are the loopback modes available in the DS92LV18TVVX/NOPB?
The component supports line and local loopback modes for system and device test capability.
- How does the DS92LV18TVVX/NOPB manage EMI?
The component uses robust BLVDS serial transmission to minimize EMI.
- What is the typical power consumption of the DS92LV18TVVX/NOPB?
The typical power consumption is 90mA for the transmitter and 100mA for the receiver at 66 MHz with PRBS-15 pattern.
- Does the DS92LV18TVVX/NOPB have built-in ESD protection?
