Texas Instruments SN65LVCP402RGET

Overview

SN65LVCP402RGET from Texas Instruments is a 2×2 non-blocking gigabit crosspoint switch IC for high-speed serial data routing, supporting up to 4.25 Gbps per lane, delivering 30 ps deterministic jitter, and featuring selectable transmit pre-emphasis (0–9 dB) and receive equalization (5/12 dB) for FR4 backplane signal integrity enhancement in telecom/datacom infrastructure.

For engineers reviewing the SN65LVCP402RGET datasheet, SN65LVCP402RGET pinout, SN65LVCP402RGET application, or SN65LVCP402RGET equivalent, this page provides verified functional identity, flow-through QFN-24 pin mapping, VML/CML interface compatibility, thermal pad grounding requirements, and validated alternatives for XAUI, backplane redundancy, and high-speed network switching designs.

Technical Context

The SN65LVCP402RGET implements a fully differential, non-blocking 2×2 crosspoint architecture with integrated 100-Ω on-die termination and self-biasing receiver inputs (VBB). Its internal 2:1 multiplexer per output enables any input to be routed to any output without contention.

It uses VML signaling with CML-compatible differential inputs and supports LVTTL control logic (S1/S2, xDE, EQ, P11–P22), enabling dynamic reconfiguration of signal paths while maintaining sub-1 ns propagation delay (0.5–0.7 ns) and <25 ps output skew across channels.

Key Specifications

Pinout & Package

SN65LVCP402RGET is housed in a 4 mm × 4 mm, 24-pin VQFN (RGE) package with exposed thermal pad requiring connection to PCB ground plane via thermal vias. The flow-through pinout minimizes trace crossovers and maintains signal integrity in high-density layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed crosspoint switching applications.

Compared with SN65LVCP402RGET, SN65LVDS122RGTR offers simpler control but lacks signal conditioning for FR4, while TSER424RHBR adds CDR and higher bandwidth at increased power and layout complexity - SN65LVCP402RGET remains optimal for cost-constrained, medium-length backplane switching without clock recovery.

Availability

SN65LVCP402RGET is available at Aetrix Electronics and suitable for wireless base station interconnect, XAUI backplane redundancy, and telecom datacom aggregation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for SN65LVCP402RGET includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-speed interface solutions, with decades of expertise in signal integrity and communications infrastructure ICs.

The SN65LVCP402RGET belongs to TI's high-speed interface product line, designed specifically for backplane and midplane signal routing in telecom, datacom, and wireless infrastructure where deterministic jitter, programmable equalization, and compact QFN packaging are critical.

FAQ

What is the maximum supported data rate for SN65LVCP402RGET?

The SN65LVCP402RGET supports up to 4.25 Gbps per lane, as confirmed in the official datasheet (SLLS699A, Section "Recommended Operating Conditions"). This rating applies to both differential inputs and outputs under 3.3-V supply and -40°C to 85°C ambient temperature, enabling compliance with XAUI 802.3ae protocol requirements. Operation above this rate is not characterized or guaranteed.

Does SN65LVCP402RGET require external termination resistors?

No, SN65LVCP402RGET integrates 100-Ω differential termination on all I/O pairs, eliminating the need for external resistors. As stated in the "Features" section and verified in the "Electrical Characteristics" table (RT(D) = 80–120 Ω), this on-die termination reduces PCB area, improves impedance matching, and enhances signal integrity - especially critical for 4.25 Gbps operation on FR4 substrates.

How is the thermal pad of SN65LVCP402RGET connected?

The exposed thermal pad of SN65LVCP402RGET must be soldered directly to the PCB ground plane using ≥4 thermal vias (22-mil diameter recommended), as specified in the "Terminal Functions" table and Package Outline documentation. This connection is mandatory for both thermal dissipation (θJA drops from 106.6°C/W to 55.4°C/W) and mechanical reliability - leaving the pad unconnected risks junction overheating and premature failure under sustained 290 mW operation.

Can SN65LVCP402RGET operate with AC-coupled inputs?

Yes, SN65LVCP402RGET supports AC-coupled inputs: the VBB pin should be left floating to enable internal self-biasing at 1.6 V, as documented in the "Terminal Functions" and "Electrical Characteristics" sections. This configuration ensures optimal common-mode input voltage (VICM = 1.5–1.6 V) and best jitter performance - DC coupling is possible only if VBB is actively driven, which is uncommon in backplane applications.

What is the function of the EQ pin on SN65LVCP402RGET?

The EQ pin on SN65LVCP402RGET selects receive equalization gain: EQ = 1 configures 5 dB gain (suitable for ~25-inch FR4 traces), while EQ = 0 enables 12 dB gain (optimized for ~43-inch FR4). This setting is confirmed in Table 2 ("Receive Equalization Settings") and directly affects deterministic jitter reduction - incorrect EQ selection degrades eye opening and increases bit error rate in long-reach applications.