Overview
The SN65LVDS31DRG4, produced by Texas Instruments, is a high-speed differential line driver that implements the electrical characteristics of low-voltage differential signaling (LVDS). This device is designed to meet or exceed the requirements of the ANSI TIA/EIA-644 standard. It operates from a single 3.3-V supply and is characterized for operation from –55°C to 125°C, making it suitable for a wide range of applications, including defense, aerospace, and medical fields.
The SN65LVDS31DRG4 reduces the output voltage levels of traditional 5-V differential standards, such as TIA/EIA-422B, to lower power consumption, increase switching speeds, and enable operation with a 3.3-V supply rail. This driver delivers a minimum differential output voltage magnitude of 247 mV into a 100-Ω load when enabled.
Key Specifications
| Parameter | Test Conditions | Min | Typical | Max | Unit |
|---|---|---|---|---|---|
| VOD (Differential Output Voltage Magnitude) | RL = 100 Ω | 247 | 340 | 454 | mV |
| ΔVOD (Change in Differential Output Voltage Magnitude) | RL = 100 Ω | –50 | 50 | 50 | mV |
| VOC(SS) (Steady-State Common-Mode Output Voltage) | 1.125 | 1.2 | 1.375 | V | |
| ICC (Supply Current) | VI = 0.8 V or 2 V, Enabled, No load | 25 | mW | ||
| tPLH (Propagation Delay Time, Low-to-High-Level Output) | RL = 100 Ω, CL = 10 pF | 0.5 | 1.4 | 2 | ns |
| tPHL (Propagation Delay Time, High-to-Low-Level Output) | RL = 100 Ω, CL = 10 pF | 1 | 1.7 | 2.5 | ns |
| tr (Differential Output Signal Rise Time) | 20% to 80% | 0.4 | 0.5 | 0.6 | ns |
| tf (Differential Output Signal Fall Time) | 80% to 20% | 0.4 | 0.5 | 0.6 | ns |
Key Features
- Meets or exceeds the requirements of ANSI TIA/EIA-644 standard
- Low-voltage differential signaling with typical output voltage of 350 mV and 100-Ω load
- Typical output voltage rise and fall times of 500 ps (400 Mbps)
- Typical propagation delay times of 1.7 ns
- Operates from a single 3.3-V supply
- Power dissipation of 25 mW typical per driver at 200 MHz
- Driver at high impedance when disabled or with VCC = 0
- Bus-terminal ESD protection exceeds 8 kV
- Low-voltage TTL (LVTTL) logic input levels
- Pin compatible with AM26LS31, MC3487, and μA9638
- Cold sparing for space and high-reliability applications requiring redundancy
Applications
- Wireless infrastructure
- Telecom infrastructure
- Printers
- Defense, aerospace, and medical applications
Q & A
- What is the typical output voltage of the SN65LVDS31DRG4?
The typical output voltage of the SN65LVDS31DRG4 is 350 mV with a 100-Ω load.
- What is the operating temperature range of the SN65LVDS31DRG4?
The SN65LVDS31DRG4 operates from –55°C to 125°C.
- What is the typical propagation delay time of the SN65LVDS31DRG4?
The typical propagation delay time is 1.7 ns.
- What is the power dissipation of the SN65LVDS31DRG4 at 200 MHz?
The power dissipation is typically 25 mW per driver at 200 MHz.
- Does the SN65LVDS31DRG4 have ESD protection?
- What are the logic input levels of the SN65LVDS31DRG4?
The SN65LVDS31DRG4 has low-voltage TTL (LVTTL) logic input levels.
- Is the SN65LVDS31DRG4 pin compatible with other devices?
- What is the typical rise and fall time of the differential output signal?
The typical rise and fall times are 500 ps each.
- Can the SN65LVDS31DRG4 be used in high-reliability applications?
- What is the minimum differential output voltage magnitude of the SN65LVDS31DRG4?
The minimum differential output voltage magnitude is 247 mV into a 100-Ω load when enabled.
