Texas Instruments SN65LVCP22DR

Overview

SN65LVCP22DR from Texas Instruments is a 2×2 LVDS crosspoint switch IC supporting >1 Gbps per channel, operating at 3.3 V with dual fully differential LVDS outputs and wide common-mode input range (0 V to 4 V) for LVDS/LVPECL/CML signal compatibility. It enables 2:2 repeating, 1:2 splitting, 2:1 multiplexing, and LVPECL-to-LVDS level translation in optical networking line cards and fault-tolerant serial backplanes.

For engineers reviewing the SN65LVCP22DR datasheet, SN65LVCP22DR pinout, SN65LVCP22DR application, or SN65LVCP22DR equivalent, key selection criteria include channel-to-channel skew (<10 ps typ), low added jitter (50 ps pk-pk max at 1 Gbps), configurable switching modes via SEL0/SEL1, and SOIC-16 package compatibility with legacy board layouts.

Technical Context

The SN65LVCP22DR implements a fully differential data path with independent 2-bit control logic (SEL0/SEL1) to configure four functional modes: 1:2 splitter (both outputs driven by same input), repeater (IN0→OUT0, IN1→OUT1), crosspoint switch (IN0→OUT0, IN1→OUT1 or IN1→OUT0, IN0→OUT1), and mirrored 1:2 splitter. Each channel supports simultaneous operation without crosstalk-induced timing degradation.

Its receiver architecture accepts differential inputs down to ±100 mV threshold with 25 mV hysteresis and operates across 0.05 V–3.95 V common-mode range, while LVDS drivers deliver 285–440 mV differential output voltage into 75 Ω loads with <100 ps pulse skew and <50 ps channel-to-channel skew in splitter mode.

Key Specifications

Pinout & Package

SN65LVCP22DR is housed in a 16-pin SOIC (D) package with 1.27 mm pitch, 10.3 mm × 6.5 mm body size, and RoHS-compliant NiPdAu lead finish. The package supports standard reflow profiles (MSL Level-1, 260°C peak).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2×2 LVDS crosspoint switching applications.

Compared with SN65LVCP22PW and DS90CP22MT, the SN65LVCP22DR delivers full 1 Gbps capability in industry-standard SOIC-16, enabling drop-in upgrades for existing designs while maintaining thermal headroom (544 mW max at 85°C) and legacy board compatibility.

Availability

SN65LVCP22DR is available at Aetrix Electronics and suitable for optical networking line cards, wireless infrastructure base stations, and network routers requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for SN65LVCP22DR 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 connectivity technologies, with over 50 years of innovation in high-speed interface solutions.

The SN65LVCP22DR belongs to TI's LVDS crosspoint and repeater product line, designed specifically for fault-tolerant serial backplane architectures in telecom and datacom equipment requiring sub-nanosecond timing precision.

FAQ

What is the maximum supported data rate for SN65LVCP22DR?

The SN65LVCP22DR supports up to 1 Gbps per channel under recommended operating conditions (VCC = 3.3 V, TA = 25°C, PRBS 2²³–1 pattern). This is verified in the datasheet's switching characteristics table (fMAX = 1 GHz) and typical jitter curves showing <50 ps added peak-to-peak jitter at 1000 Mbps. Operation beyond this rate is not characterized or guaranteed.

Does SN65LVCP22DR support LVPECL input signals directly?

Yes, SN65LVCP22DR accepts LVPECL inputs directly without external biasing or level shifting. Its wide common-mode input range (0 V to 4 V) and differential input threshold (±100 mV) accommodate LVPECL's typical 1.6 V common-mode voltage and 800 mV differential swing, as confirmed in the "INPUT ELECTRICAL CHARACTERISTICS" section and Figure 20 of the datasheet.

What are the power dissipation characteristics of SN65LVCP22DR at full speed?

At 1 Gbps, VCC = 3.3 V, and TA = 25°C, the SN65LVCP22DR dissipates 198 mW typical (60–87 mA supply current). Under worst-case conditions (VCC = 3.6 V, TA = 85°C), maximum power is 313 mW. The SOIC package provides 544 mW thermal rating at 85°C, ensuring safe operation in industrial environments without forced cooling.

How does the SN65LVCP22DR handle signal switching between modes?

SN65LVCP22DR achieves 1.7 ns typical switch time (tSWITCH) from SEL input change to valid output, with setup/hold times of 0.5 ns. The internal fully differential path ensures monotonic transitions and <100 ps pulse skew, preventing glitches during mode changes. This behavior is validated in Figure 6 timing diagrams and functional block diagram analysis.

Is SN65LVCP22DR pin-compatible with other devices in the SN65LVCP22 family?

Yes, all SN65LVCP22 variants-including SN65LVCP22D (SOIC tube), SN65LVCP22PW (TSSOP), and SN65LVCP22DR-share identical pinouts and electrical specifications. The "PACKAGE OPTION ADDENDUM" confirms identical pin assignments across D and PW packages, enabling direct substitution where package constraints allow.