Texas Instruments SN65LVCP204RGZT

Overview

SN65LVCP204RGZT from Texas Instruments is a 4×4 non-blocking gigabit crosspoint switch optimized for high-speed serial interconnects in telecom and datacom systems. It supports up to 2.5 Gbps per lane, delivers 30 ps deterministic jitter, integrates 100-Ω differential termination, and operates from a single 3.3-V supply with 560 mW typical power dissipation.

For engineers reviewing the SN65LVCP204RGZT datasheet, SN65LVCP204RGZT pinout, SN65LVCP204RGZT application, or SN65LVCP204RGZT equivalent, this device serves as a critical signal routing element in backplane and FR4 trace–constrained environments requiring selectable preemphasis (0–9 dB), receive equalization (5/12 dB), and high-impedance output control.

Technical Context

The SN65LVCP204RGZT implements a fully differential VML signaling architecture with four independent 4:1 multiplexers - one per output - enabling any input (1A/1B through 4A/4B) to be routed to any output (1Y/1Z through 4Y/4Z) without blocking. Its internal signal paths maintain sub-25 ps output skew and 500 ps typical propagation delay.

Each channel includes programmable transmit preemphasis (via Pxx pins) and dual-mode receive equalization (EQ pin selects 5-dB or 12-dB gain), both calibrated for FR4 trace lengths up to 43 inches. Input compatibility with CML logic and integrated 50-Ω termination to VBB enable direct interface with legacy serializers without external biasing.

Key Specifications

Pinout & Package

The SN65LVCP204RGZT is housed in a 48-pin VQFN (RGZ) package with 7 mm × 7 mm footprint, 0.5 mm pitch, and exposed thermal pad. The flow-through pinout minimizes trace crossovers and supports straight-line PCB routing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4814EUB+ and DS25BR120TSQ, the SN65LVCP204RGZT uniquely combines per-lane preemphasis, dual-mode equalization, and integrated 100-Ω termination - making it the only option capable of maintaining <1 UI jitter margin across 43-inch FR4 traces without external signal conditioning.

Availability

SN65LVCP204RGZT is available at Aetrix Electronics and suitable for wireless infrastructure, optical transport, high-speed networking, and automated test equipment requiring stable component supply across extended product lifecycles.

Supply support for SN65LVCP204RGZT 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 over 50 years of innovation in signal integrity and timing products.

The SN65LVCP204RGZT belongs to TI's LVCP (Low-Voltage CrossPoint) family, engineered specifically for gigabit serial interconnects in telecom/datacom equipment where deterministic jitter, trace-length compensation, and board-space efficiency are critical design constraints.

FAQ

What is the maximum supported data rate for SN65LVCP204RGZT?

The SN65LVCP204RGZT supports up to 2.5 Gbps per lane under recommended operating conditions. This rating is validated with PRBS27–1 pattern testing and applies across the full –40°C to +85°C temperature range. Operation beyond 2.5 Gbps is not characterized and may result in increased deterministic jitter or bit-error-rate degradation.

Does SN65LVCP204RGZT require external termination resistors?

No, the SN65LVCP204RGZT integrates 100-Ω differential termination on-chip for all outputs, eliminating the need for external resistors. Inputs are internally terminated to VBB (1.6 V) with 50-Ω resistance, compatible with CML signaling. External termination is only required if interfacing with non-CML sources lacking built-in termination.

How does the EQ pin affect SN65LVCP204RGZT performance?

The EQ pin on the SN65LVCP204RGZT selects receive equalization gain: EQ = 1 enables 5-dB mode (optimized for ~25-inch FR4 traces), while EQ = 0 enables 12-dB mode (for ~43-inch traces). This setting directly reduces deterministic jitter by compensating for intersymbol interference - measured improvement exceeds 30 ps in long-trace configurations.

Can SN65LVCP204RGZT outputs be individually disabled?

Yes, the SN65LVCP204RGZT provides four independent data-enable (DE) inputs - 1DE through 4DE - each controlling one output pair (1Y/1Z to 4Y/4Z). When asserted low, the corresponding output enters high-impedance state, reducing dynamic power consumption and enabling flexible power management in multi-channel systems.

What package type and thermal characteristics apply to SN65LVCP204RGZT?

The SN65LVCP204RGZT uses a 48-pin VQFN (RGZ) package measuring 7 mm × 7 mm with 0.5 mm pitch and an exposed thermal pad. Its thermal metrics include θJA = 33°C/W (4-layer JEDEC board), θJB = 20°C/W, and θJC = 23.6°C/W. The thermal pad must be soldered to a solid GND plane for optimal junction temperature control.