Overview
The SN65LVDS31MDREP from 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 reduce power consumption, increase switching speeds, and operate with a single 3.3-V supply rail. It is particularly suited for applications requiring high reliability and speed, such as defense, aerospace, and medical fields. The SN65LVDS31MDREP meets or exceeds the requirements of the ANSI TIA/EIA-644 standard and is characterized for operation over a wide temperature range of –55°C to 125°C.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range | -0.5 | - | 4 | V |
| Input Voltage Range | -0.5 | - | VCC + 0.5 | V |
| Differential Output Voltage Magnitude | 247 | 350 | - | mV |
| Output Voltage Rise and Fall Times | - | 500 ps | - | ps |
| Propagation Delay Time | - | 1.7 ns | - | ns |
| Supply Current at 200 MHz | - | 25 | 35 | mA |
| Bus-Terminal ESD Protection | - | - | 8 kV | - |
| Operating Temperature Range | -55 | - | 125 | °C |
| Package Type | - | - | SOIC-D | - |
| Number of Pins | - | - | 16 | - |
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
The SN65LVDS31MDREP is designed for high-speed point-to-point and multidrop data transmission over controlled impedance media, such as printed-circuit board traces, backplanes, or cables. It is particularly suited for applications in defense, aerospace, and medical fields where high reliability and speed are critical. The device can also interoperate with RS-422, PECL, and IEEE-P1596 standards, making it versatile for various high-speed data transmission needs.
Q & A
- What is the primary function of the SN65LVDS31MDREP?
The SN65LVDS31MDREP is a differential line driver that implements low-voltage differential signaling (LVDS) for high-speed data transmission.
- What is the operating temperature range of the SN65LVDS31MDREP?
The device operates over a temperature range of –55°C to 125°C.
- What is the typical output voltage of the SN65LVDS31MDREP?
The typical output voltage is 350 mV into a 100-Ω load.
- What is the propagation delay time of the SN65LVDS31MDREP?
The typical propagation delay time is 1.7 ns.
- What is the power dissipation of the SN65LVDS31MDREP at 200 MHz?
The typical power dissipation is 25 mW per driver at 200 MHz.
- Does the SN65LVDS31MDREP have ESD protection?
Yes, the device has bus-terminal ESD protection that exceeds 8 kV.
- What are the compatible logic input levels for the SN65LVDS31MDREP?
The device supports low-voltage TTL (LVTTL) logic input levels.
- Is the SN65LVDS31MDREP pin compatible with other devices?
Yes, it is pin compatible with AM26LS31, MC3487, and μA9638.
- What applications benefit from the SN65LVDS31MDREP?
The device is suited for defense, aerospace, and medical applications, as well as any high-speed data transmission needs.
- How does the SN65LVDS31MDREP handle when disabled or with VCC = 0?
The driver goes to high impedance when disabled or with VCC = 0.
