会社ブログについて Supplying the Texas Instruments DS90LV001 800 Mbps LVDS Buffer: Overcoming Backplane Signal Bottlenecks with “Short-Line Hiding”

The DS90LV001 is an 800 Mbps single-channel LVDS buffer/repeater from Texas Instruments (TI). Its core value lies in addressing the engineering challenge of “signal degradation by the time it reaches the end” in high-speed backplanes and cable links, with a typical propagation delay of 1.4 ns and peak-to-peak jitter of 100 ps. Mingjiada Electronics offers brand-new, genuine, in-stock supplies of the DS90LV001 series (including package variants such as the DS90LV001TMX).

Product Positioning: Not a “Driver,” but a “Signal Regeneration Point” in the Link

The DS90LV001 is classified as an LVDS-LVDS buffer (Buffer/ReDriver), not an LVDS driver or receiver. Its functional logic is straightforward: it receives a differential LVDS (or LVPECL) signal that has already been attenuated and is subject to increased jitter, regenerates it internally, and outputs a clean LVDS signal. This “receive—regenerate—transmit” mechanism makes it a critical node for restoring signal integrity in systems with long backplanes, long cables, and high-density card-based systems.

Its wide input dynamic range allows it to directly receive LVPECL signals and output standard LVDS signals. Therefore, in systems where both LVPECL and LVDS levels coexist, the DS90LV001 can also serve as an LVPECL-to-LVDS converter, reducing the need for additional level-shifting devices. The output features an enable pin (EN) that can place the output in a tri-state (high-impedance) mode, facilitating signal multiplexing or test isolation.

DS90LV001 Specifications

Manufacturer: Texas Instruments

Device Type: LVDS-LVDS Buffer / ReDriver

Data Rate: 800 Mbps

Propagation Delay (Typical): 1.4 ns

Jitter (Typical): 100 ps pk-pk (PRBS = 2²³−1, 800 Mbps)

Receiver Input Threshold: < ±100 mV

Input Level Compatibility: LVDS, LVPECL

Output Level: LVDS

Supply Voltage: 3.0 V – 3.6 V (Nominal +3.3 V single supply)

Operating current: 47 mA (typical) / 70 mA (maximum)

Maximum power consumption: 726 mW

Output enable: EN pin, tri-state output

Package options: 8-pin SOIC; 8-pin WSON (3×3 mm, approximately 70% smaller footprint than SOIC)

Operating temperature: –40°C to +85°C

Standards Compliance: ANSI/TIA/EIA-644-A LVDS

Since the supply current is specified as both 47 mA (typical) and 70 mA (maximum), the 70 mA value should be used as a reference when designing power supply margins. The WSON package measures 3 mm × 3 mm × 0.8 mm, making it suitable for board layouts with limited vertical space.

Typical Applications: Why “Stub-Hider” and “Cable Repeater” Applications Rely on It

The two signature application scenarios for the DS90LV001 both address the same engineering challenge: signals must reach receivers that are physically distant from the main transmission line, but extending the trace directly introduces reflections, loss, and jitter.

Application 1: Backplane Stub-Hider. In large backplane systems, signals branch from the main transmission line to terminations on various expansion cards; the length of this stub is one of the key factors limiting system speed. Ideally, the stub should be as short as possible, but actual packaging and PCB layout constraints often make this impossible. The DS90LV001 offers the following solution: place the buffer near the main transmission line, connect it via an extremely short stub, and then extend the trace from the buffer’s output to the remote receiver. The WSON package (3×3 mm) makes this layout possible, minimizing the stub length and thereby improving the overall signal quality of the system.

Application 2: Cable Repeater. In systems that transmit LVDS signals via cables such as CAT5, DC loss and high-frequency attenuation in the cable can cause the eye diagram to close after the signal has traveled a certain distance. Placed at the receiving end of the cable, the DS90LV001 regenerates the attenuated signal and feeds it into the downstream circuitry, thereby extending the effective transmission distance without requiring a cable replacement or a reduction in data rate.

Mingjiada Electronics Offers Genuine, In-Stock Products

Mingjiada Electronics (Shenzhen Mingjiada Electronics Co., Ltd.) offers brand-new, genuine, in-stock products from the DS90LV001 series, with available models including the DS90LV001TMX and other package versions.

Purchasing Contact: Phone 86-755-83294757; Email sales@hkmjd.com. Real-time inventory, batch numbers, and prices are subject to confirmation at the time of inquiry.

Tags: DS90LV001TMX, DS90LV001TM, DS90LV001T, DS90LV001