SN65LVDS109DBTR

Overview

The SN65LVDS109DBTR is a dual 4-port LVDS repeater manufactured by Texas Instruments. It operates within a supply voltage range of 3 V to 3.6 V and supports data signaling rates up to 400 Mbps. The device features two identical banks, each containing one differential line receiver connected to four differential line drivers. Key electrical parameters include a maximum propagation delay of 4.5 ns, output skew less than 550 ps, bank skew less than 150 ps, and part-to-part skew less than 1.5 ns. It is packaged in a 38-pin Thin Shrink Small-Outline (TSSOP) DBT package with a 20-mil terminal pitch.

Feature Summary

• Dual-bank architecture providing independent control over signal paths via individual enable logic for each output pair and all outputs.
• Low pulse skew characteristics achieved through balanced signaling on a single silicon substrate, ensuring precise timing alignment.
• Fail-safe circuitry that forces the receiver output high when inputs are open-circuited or disconnected.
• Electrical compatibility with various logic families including LVTTL, LVCMOS, PECL, and LVPECL using external termination networks.

Applications

• Point-to-point or point-to-multipoint baseband data transmission on controlled impedance media.
• System clock and data distribution trees requiring precise timing alignment.
• Buffering and splitting signals to minimize noise pickup and excessive skew over long signaling paths.

Procurement Notes

Verify the specific ordering suffix 'DBTR' corresponds to the tape and reel packaging format rather than the tube variant. Confirm RoHS compliance status and moisture sensitivity level ratings prior to assembly. Ensure the procurement source provides valid traceability documentation consistent with Texas Instruments production standards.

Selection Notes

Select this component when a dual-channel LVDS splitter is required to maintain tight timing budgets between related signal pairs. Compare against the SN65LVDS117 if eight ports per bank are needed instead of four. Consider the physical package constraints of the 38-pin TSSOP form factor during PCB layout planning.

Part Context

This device belongs to the SN65LVDS1xx family of LVDS splitters and repeaters designed for high-speed digital interfaces. It complements other interface solutions like the SN65LVDS108 and SN65LVDS116 by offering a compact dual-bank configuration suitable for complex system architectures requiring multiple isolated signal paths.

Replacement Considerations

The SN65LVDS117 serves as a higher-density alternative with eight drivers per bank. For single-bank applications, the SN65LVDS104 or SN65LVDS108 may be considered depending on port count requirements. Verify pinout compatibility before substituting any family member.