Overview
The DS90LV047A, produced by Texas Instruments, is a quad CMOS flow-through differential line driver designed for applications requiring ultra-low power dissipation and high data rates. This device utilizes Low Voltage Differential Signaling (LVDS) technology to support data rates in excess of 400 Mbps (200 MHz). It accepts low voltage TTL/CMOS input levels and translates them to low voltage (350 mV) differential output signals. The DS90LV047A is particularly useful in high-speed point-to-point interface applications, offering a low-power alternative to high-power pseudo-ECL devices.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3 | 3.3 | 3.6 | V |
| Operating Temperature (TA) | -40 | 25 | 85 | °C |
| Differential Output Voltage (VOD1) | 250 | 310 | 450 | mV |
| Propagation Delay (tPLHD, tPHLD) | 0.5 | 1.2 | 1.7 | ns |
| Differential Skew (tSKD1) | 0 | 0.3 | 0.4 | ns |
| Power Dissipation (at 3.3 V, static) | 13 | mW | ||
| Maximum Operating Frequency | 200 | 250 | MHz |
Key Features
- Flow-through pinout simplifies PCB layout
- Typical differential skew of 300 ps, maximum of 400 ps
- Maximum propagation delay of 1.7 ns
- 3.3-V power supply design
- ±350-mV differential signaling
- Low power dissipation (13 mW at 3.3 V static)
- Interoperable with existing 5-V LVDS receivers
- High impedance on LVDS outputs on power down
- Conforms to TIA/EIA-644 LVDS standard
- Industrial operating temperature range (-40°C to +85°C)
- Available in surface mount SOIC and low profile TSSOP packages
Applications
- Multifunction printers
- LVDS – LVCMOS translation
- High-speed point-to-point interface applications
Q & A
- What is the primary function of the DS90LV047A?
The DS90LV047A is a quad CMOS differential line driver designed to translate low voltage TTL/CMOS input levels to low voltage differential output signals using LVDS technology.
- What are the typical and maximum differential skews of the DS90LV047A?
The typical differential skew is 300 ps, and the maximum differential skew is 400 ps.
- What is the maximum propagation delay of the DS90LV047A?
The maximum propagation delay is 1.7 ns.
- What is the power supply voltage range for the DS90LV047A?
The power supply voltage range is from 3 V to 3.6 V.
- What is the typical power dissipation of the DS90LV047A at 3.3 V?
The typical power dissipation is 13 mW at 3.3 V static.
- Is the DS90LV047A compatible with existing 5-V LVDS receivers?
- What are the recommended operating temperatures for the DS90LV047A?
The recommended operating temperatures range from -40°C to +85°C.
- In what packages is the DS90LV047A available?
The DS90LV047A is available in surface mount SOIC and low profile TSSOP packages.
- What is the significance of the flow-through pinout in the DS90LV047A?
The flow-through pinout simplifies PCB layout by allowing for easy matching of electrical lengths of the differential pair trace lines between the driver and the receiver.
- How does the DS90LV047A handle power-down conditions?
The DS90LV047A has high impedance on LVDS outputs when powered down.
