Overview
The SN65LVDS9638DGKR is a high-speed differential line driver produced by Texas Instruments. This device implements the electrical characteristics of low-voltage differential signaling (LVDS), which reduces power consumption, increases switching speeds, and allows operation with a 3.3-V supply rail. The SN65LVDS9638 is part of a family of LVDS drivers that include the SN55LVDS31, SN65LVDS31, and SN65LVDS3487. It is designed to drive 100-Ω transmission lines, such as those found in printed-circuit boards (PCBs) or cabled interconnects, ensuring optimal signal quality and power delivery.
Key Specifications
| Parameter | Test Conditions | Typical Value | Unit |
|---|---|---|---|
| Differential Output Voltage Magnitude (VOD) | RL = 100 Ω | 340 | mV |
| Change in Differential Output Voltage Magnitude (ΔVOD) | RL = 100 Ω | 50 | mV |
| Steady-State Common-Mode Output Voltage (VOC(SS)) | 1.2 | V | |
| Propagation Delay Time, Low-to-High-Level Output (tPLH) | RL = 100 Ω, CL = 10 pF | 1.4 | ns |
| Propagation Delay Time, High-to-Low-Level Output (tPHL) | RL = 100 Ω, CL = 10 pF | 1.7 | ns |
| Differential Output Signal Rise Time (20% to 80%) (tr) | 0.5 | ns | |
| Differential Output Signal Fall Time (80% to 20%) (tf) | 0.5 | ns | |
| Supply Current (ICC) | VI = 0.8 V or 2 V, Enabled, No load | 8 | mA |
| Operating Temperature Range | -40 to 85 | °C | |
| Package Type | VSSOP (DGK) | ||
| Pins | 8 |
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
Q & A
- What is the typical differential output voltage of the SN65LVDS9638?
The typical differential output voltage is 340 mV into a 100-Ω load.
- What is the operating temperature range of the SN65LVDS9638?
The operating temperature range is from -40°C to 85°C.
- What type of package does the SN65LVDS9638DGKR come in?
The SN65LVDS9638DGKR comes in a VSSOP (DGK) package with 8 pins).
- What is the typical propagation delay time of the SN65LVDS9638?
The typical propagation delay time is 1.7 ns).
- Does the SN65LVDS9638 support cold sparing for high-reliability applications?
- What is the supply voltage for the SN65LVDS9638?
The device operates from a single 3.3-V supply).
- What is the typical power dissipation per driver at 200 MHz?
The typical power dissipation is 25 mW per driver at 200 MHz).
- Does the SN65LVDS9638 have ESD protection?
- What type of logic input levels does the SN65LVDS9638 support?
The device supports Low-Voltage TTL (LVTTL) logic input levels).
- Is the SN65LVDS9638 pin compatible with other devices?
