SNx5LVDS3xx High-Speed Differential Line Drivers
1 Features
- Four ('391), Eight ('389), or Sixteen ('387) Line Drivers Meet or Exceed the Requirements of ANSI EIA/TIA-644 Standard
- Designed for Signaling Rates Up to 630 Mbps With Very Low Radiation (EMI)
- Low-Voltage Differential Signaling With Typical Output Voltage of 350 mV and a 100-Ω Load
- Propagation Delay Times Less Than 2.9 ns
- Output Skew Is Less Than 150 ps
- Part-to-Part Skew Is Less Than 1.5 ns
- 35-mW Total Power Dissipation in Each Driver Operating at 200 MHz
- Driver Is High-Impedance When Disabled or With VCC < 1.5 V
- SN65' Version Bus-Pin ESD Protection Exceeds 15 kV
- Packaged in Thin Shrink Small-Outline Package With 20-mil Pin Pitch
- Low-Voltage TTL (LVTTL) Logic Inputs Are 5-V Tolerant
2 Applications
- Wireless Infrastructure
- Telecom Infrastructure
- Printer
3 Description
This family of 4, 8, and 16 differential line drivers implements the electrical characteristics of low-voltage differential signaling (LVDS). This signaling technique lowers the output voltage levels of 5-V differential standard levels (such as EIA/TIA-422B) to reduce the power, increase the switching speeds, and allow operation with a 3.3-V supply rail. Any of the 16 current-mode drivers will deliver a minimum differential output voltage magnitude of 247 mV into a 100-Ω load when enabled.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| SN65LVDS387 | TSSOP (64) | 17.00 mm × 6.10 mm |
| SN75LVDS387 | TSSOP (38) | 9.70 mm × 4.40 mm |
| SN65LVDS389 | SOIC (16) | 9.90 mm × 3.91 mm |
| TSSOP (16) | 5.00 mm × 4.40 mm | |
| SN75LVDS389 | TSSOP (64) | 17.00 mm × 6.10 mm |
| SN65LVDS391 | TSSOP (38) | 9.70 mm × 4.40 mm |
| SN75LVDS391 | SOIC (16) | 9.90 mm × 3.91 mm |
| TSSOP (16) | 5.00 mm × 4.40 mm |
- For all available packages, see the orderable addendum at the end of the data sheet.
Typical Application Schematic
4 Revision History
Changes from F Revision (December 2014) to G Revision
- Changed C3A From: pin 20 To: pin 21 in the Pin Functions: SNx5LVDS387 table Go
Changes from E Revision (November 2004) to F Revision
- Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section Go
5 Description (Continued)
When disabled, the driver outputs are high-impedance. Each driver input (A) and enable (EN) have an internal pulldown that will drive the input to a low level when open-circuited.
The SN65LVDS387, SN65LVDS389, and SN65LVDS391 devices are characterized for operation from –40°C to 85°C. The SN75LVDS387, SN75LVDS389, and SN75LVDS391 devices are characterized for operation from 0°C to 70°C.
