Texas Instruments SN65LVCP404RGZR

Overview

SN65LVCP404RGZR from Texas Instruments is a 4×4 non-blocking gigabit crosspoint switch IC for high-speed serial interconnects, supporting up to 4.25 Gbps per lane with 30 ps deterministic jitter, 500 ps typical propagation delay, and integrated VML signaling. It operates from a single 3.3-V supply and is used in XAUI-compliant backplane routing, telecom switching fabric, and wireless base station data path aggregation.

For engineers reviewing the SN65LVCP404RGZR datasheet, SN65LVCP404RGZR pinout, SN65LVCP404RGZR application, or SN65LVCP404RGZR equivalent, key selection criteria include differential CML/VM-compatible I/O, per-lane transmit pre-emphasis (0–9 dB), receive equalization (5 dB or 12 dB), 48-pin QFN thermal pad layout, and 3-state output control for power-aware system design.

Technical Context

The SN65LVCP404RGZR implements a fully differential, flow-through pinout architecture with four independent 4:1 multiplexed outputs, enabling any input to be routed to any output without blocking. Its internal signal paths maintain sub-25 ps output skew and support ac-coupled CML-level inputs with self-biased VBB reference.

It integrates on-die 100-Ω differential termination resistors, programmable pre-emphasis via LVTTL Pxx controls (Px₂:Px₁), and selectable receive equalization (EQ pin) to compensate for FR4 trace loss-up to 43 inches at 12 dB gain-while maintaining <2 ps-rms random jitter at 4.25 Gbps.

Key Specifications

Pinout & Package

SN65LVCP404RGZR is housed in a 7 mm × 7 mm, 48-pin VQFN (RGZ) package with exposed thermal pad. The package uses 0.5 mm pitch, requires solder reflow per MSL Level-3 (260°C), and mandates connection of the center GND pad to a solid ground plane for thermal and signal integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN65LVCP404RGZR, SN65LVCP22RGZR offers identical signal integrity features at reduced scale, while MAX4899AEETI+ serves fundamentally different (analog/parallel) use cases and lacks high-speed serial equalization capabilities.

Availability

SN65LVCP404RGZR is available at Aetrix Electronics and suitable for XAUI backplane routing, wireless base station IF aggregation, and high-speed network switching applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for SN65LVCP404RGZR 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 clocking architectures.

The SN65LVCP404RGZR belongs to TI's LVCP (Low-Voltage CrossPoint) family, designed specifically for gigabit serial interconnects 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 SN65LVCP404RGZR?

The SN65LVCP404RGZR supports up to 4.25 Gbps per lane, validated per IEEE 802.3ae XAUI specifications. This rate is guaranteed across the full operating temperature range (–40°C to 85°C) with deterministic jitter ≤30 ps peak-to-peak and random jitter ≤2 ps-rms under specified load and supply conditions. The SN65LVCP404RGZR achieves this using VML signaling and integrated equalization.

Does SN65LVCP404RGZR require external termination resistors?

No, SN65LVCP404RGZR integrates 100-Ω differential termination resistors on-chip for both inputs and outputs. This eliminates the need for eight external 100-Ω resistors typically required in high-speed designs, reducing PCB area, component count, and potential impedance mismatches. External termination is only needed if custom values (e.g., 80 Ω or 120 Ω) are required per system-level simulation.

How is receive equalization configured on SN65LVCP404RGZR?

Receive equalization on SN65LVCP404RGZR is controlled by the single EQ pin (pin 11). When EQ = 1 (default), the device applies 5 dB of equalization gain-optimized for ~25-inch FR4 traces. When EQ = 0, it applies 12 dB gain-suitable for longer traces up to 43 inches. This configuration is static per power-up and does not require serial programming or I²C interface.

What package type and thermal requirements apply to SN65LVCP404RGZR?

SN65LVCP404RGZR uses a 7 mm × 7 mm, 48-pin VQFN (RGZ) package with an exposed thermal pad. It requires MSL Level-3 handling and reflow at 260°C. The thermal pad must be soldered to a solid inner-layer ground plane to achieve θJB = 20°C/W and prevent junction temperatures exceeding 125°C under full-load operation (560 mW).

Can SN65LVCP404RGZR operate with CML input signals?

Yes, SN65LVCP404RGZR accepts CML-level differential inputs directly. Its inputs are electrically compatible with CML signaling (typically –0.2 V to 0.8 V common-mode, 100–1750 mVPP differential), and include internal 50-Ω termination to VBB (1.6 V). No external level shifters or terminations are required for standard CML sources, simplifying interface design in SerDes-based systems.