Overview
The DS90CR287MTDX/NOPB is a 28-bit Channel Link Transmitter produced by Texas Instruments. This component converts 28 bits of LVCMOS/LVTTL data into four LVDS (Low Voltage Differential Signaling) data streams, along with a phase-locked transmit clock transmitted in parallel over a fifth LVDS link. This chipset is designed to address EMI and cable size issues associated with high-speed TTL interfaces by reducing the number of wires needed and minimizing electromagnetic interference.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | TSSOP (DGG) - 56 pins |
| Operating Temperature Range | -10°C to 70°C |
| Shift Clock Frequency | 20 to 85 MHz |
| Data Throughput | Up to 2.38 Gbps (297.5 Mbytes/sec) |
| LVDS Data Rate | 595 Mbps per LVDS data channel at 85 MHz |
| Supply Voltage | 3.0 to 3.6 V |
| LVDS Differential Output Voltage | 250 to 450 mV |
| Common-Mode Range | ±1V (around +1.2V) |
| Set & Hold Times on TxINPUTs | 2.5 / 0 ns |
| Power Consumption | Low power consumption |
Key Features
- 20 to 85 MHz Shift Clock Support
- 50% Duty Cycle on Receiver Output Clock
- 2.5 / 0 ns Set & Hold Times on TxINPUTs
- Low Power Consumption
- ±1V Common-Mode Range (around +1.2V)
- Narrow Bus Reduces Cable Size and Cost
- Up to 2.38 Gbps Throughput and 297.5 Mbytes/sec Bandwidth
- 345 mV (typ) Swing LVDS Devices for Low EMI
- PLL Requires no External Components
- Rising Edge Data Strobe
- Compatible with TIA/EIA-644 LVDS Standard
- Low Profile 56-Lead TSSOP Package
Applications
The DS90CR287MTDX/NOPB is ideal for applications requiring high-speed data transmission with minimal electromagnetic interference and reduced cable size. It is particularly useful in systems where wide, high-speed TTL interfaces are problematic. Common applications include high-speed data links in industrial, automotive, and medical devices, as well as in various communication and networking equipment.
Q & A
- What is the primary function of the DS90CR287MTDX/NOPB?
The primary function is to convert 28 bits of LVCMOS/LVTTL data into four LVDS data streams along with a phase-locked transmit clock. - What is the operating temperature range of the DS90CR287MTDX/NOPB?
The operating temperature range is -10°C to 70°C. - What is the maximum data throughput of the DS90CR287MTDX/NOPB?
The maximum data throughput is up to 2.38 Gbps (297.5 Mbytes/sec). - What is the typical LVDS differential output voltage?
The typical LVDS differential output voltage is 250 to 450 mV. - Does the DS90CR287MTDX/NOPB require external components for the PLL?
No, the PLL requires no external components. - What is the significance of the rising edge data strobe?
The rising edge of the transmit clock acts as a data strobe. - Is the DS90CR287MTDX/NOPB compatible with any industry standards?
Yes, it is compatible with the TIA/EIA-644 LVDS Standard. - What are the benefits of using the DS90CR287MTDX/NOPB in terms of cable size and EMI?
The narrow bus reduces cable size and cost, and the LVDS signaling minimizes electromagnetic interference. - What is the package type and pin count of the DS90CR287MTDX/NOPB?
The package type is TSSOP (DGG) with 56 pins. - How does the DS90CR287MTDX/NOPB handle power down?
The device can be powered down by asserting a low input on the PWR DOWN pin, which TRI-STATES the outputs to ensure low current.
