Overview
The SN75LVDS389DBT, produced by Texas Instruments, is a high-speed differential line driver that implements the electrical characteristics of low-voltage differential signaling (LVDS). This component is part of a family of LVDS drivers that include 4, 8, and 16 differential line drivers. The SN75LVDS389DBT specifically features eight differential line drivers and is packaged in a 38-pin Thin Shrink Small-Outline Package (TSSOP) with a 20-mil pin pitch. It is designed to operate with a 3.3-V supply rail, reducing power consumption and increasing switching speeds compared to traditional 5-V differential standards like EIA/TIA-422B.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | TSSOP (DBT) |
| Pins | 38 |
| Operating Temperature Range (°C) | 0 to 70 |
| Signaling Rate | Up to 630 Mbps |
| Output Voltage | Typical 350 mV with 100-Ω load |
| Propagation Delay Time | Less than 2.9 ns |
| Output Skew | Less than 150 ps |
| Part-to-Part Skew | Less than 1.5 ns |
| Total Power Dissipation (at 200 MHz) | 35 mW per driver |
| Logic Input Compatibility | Low-Voltage TTL (LVTTL), 5-V tolerant |
| ESD Protection | Exceeds 15 kV (SN65 version) |
Key Features
- Meets or exceeds ANSI EIA/TIA-644 standard for LVDS signaling.
- Designed for signaling rates up to 630 Mbps with very low radiation (EMI).
- Low-voltage differential signaling with typical output voltage of 350 mV into a 100-Ω load.
- Propagation delay times less than 2.9 ns and output skew less than 150 ps.
- Part-to-part skew less than 1.5 ns.
- High-impedance output when disabled or with VCC < 1.5 V.
- Low-voltage TTL (LVTTL) logic inputs are 5-V tolerant.
Applications
The SN75LVDS389DBT is suitable for various high-speed data transmission applications where low power consumption and high signal integrity are crucial. These include:
- High-speed data transmission systems.
- Flat-panel displays.
- High-definition video interfaces.
- Industrial control systems requiring high-speed data transfer.
- Automotive and aerospace applications where reliable high-speed signaling is necessary.
Q & A
- What is the SN75LVDS389DBT used for?
The SN75LVDS389DBT is used for high-speed differential line driving in applications requiring low-voltage differential signaling (LVDS). - What is the maximum signaling rate of the SN75LVDS389DBT?
The maximum signaling rate is up to 630 Mbps. - What is the typical output voltage of the SN75LVDS389DBT?
The typical output voltage is 350 mV into a 100-Ω load. - What is the operating temperature range of the SN75LVDS389DBT?
The operating temperature range is from 0°C to 70°C. - Is the SN75LVDS389DBT ESD protected?
Yes, the SN65 version of this family exceeds 15 kV ESD protection. - What type of logic inputs does the SN75LVDS389DBT support?
The SN75LVDS389DBT supports low-voltage TTL (LVTTL) logic inputs and is 5-V tolerant. - How many differential line drivers does the SN75LVDS389DBT have?
The SN75LVDS389DBT has eight differential line drivers. - What is the package type of the SN75LVDS389DBT?
The package type is a 38-pin Thin Shrink Small-Outline Package (TSSOP). - What is the total power dissipation of each driver at 200 MHz?
The total power dissipation is 35 mW per driver. - Are the outputs high-impedance when disabled?
Yes, the outputs are high-impedance when disabled or with VCC < 1.5 V.
