Texas Instruments SN65LVDS122PWR

Overview

SN65LVDS122PWR from Texas Instruments is a 1.5-Gbps 2×2 LVDS crosspoint switch in TSSOP-16 package, supporting LVDS/LVPECL/CML input compatibility, 900-ps max propagation delay, 65-ps peak-to-peak jitter at 1.5 Gbps, and operation from –40°C to 85°C. It enables loopback switching, clock/data fanout, and protection switching in high-speed serial backplanes.

For engineers reviewing the SN65LVDS122PWR datasheet, SN65LVDS122PWR pinout, SN65LVDS122PWR application, or SN65LVDS122PWR equivalent, key selection criteria include differential signaling integrity up to 1.5 Gbps, 0-V to 4-V common-mode input range, 25-mV receiver hysteresis, and support for 2:1 multiplexer, 1:2 splitter, or dual repeater configurations via S0/S1 control pins.

Technical Context

The SN65LVDS122PWR implements a fully differential 2×2 crosspoint architecture with independent enable (1DE/2DE) and configuration (S0/S1) logic inputs. Its internal signal paths preserve LVDS integrity without single-ended conversion, enabling sub-ns timing precision and low skew between outputs.

It accepts wide-range differential inputs (|VID| ≥ 100 mV) across 0–4 V common-mode voltage, supports three operating modes-crosspoint, mux, or splitter-and maintains < 50 ps output skew and < 65 ps total jitter at full 1.5 Gbps data rate with 2²³−1 PRBS pattern.

Key Specifications

Pinout & Package

TSSOP-16 package (PW), 5.0 mm × 4.4 mm × 1.2 mm height, lead pitch 0.65 mm, RoHS-compliant NIPDAU finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LVDS crosspoint switch applications.

Compared with SN65LVDS22D and MAX9152ESE+, the SN65LVDS122PWR delivers 50% higher bandwidth, superior jitter performance (65 ps vs >100 ps), and wider input compatibility-making it optimal for next-generation optical, wireless, and high-reliability backplane designs.

Availability

SN65LVDS122PWR is available at Aetrix Electronics and suitable for optical module clock distribution, serial backplane protection switching, and wireless base station IF interconnect requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for SN65LVDS122PWR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.

The SN65LVDS122PWR belongs to TI's high-speed interface product line, engineered specifically for low-jitter, multi-gigabit LVDS signal routing in telecom infrastructure, optical networking, and wireless baseband equipment.

FAQ

What is the maximum supported data rate for SN65LVDS122PWR?

The SN65LVDS122PWR is characterized for reliable operation up to 1.5 Gbps with 2²³−1 PRBS input patterns, achieving ≤65 ps peak-to-peak jitter. While some 2-Gbps operation may be possible under ideal loading and signal quality conditions, TI specifies 1.5 Gbps as the guaranteed maximum data rate for SN65LVDS122PWR across the full –40°C to 85°C temperature range.

Does SN65LVDS122PWR support LVPECL and CML inputs?

Yes, SN65LVDS122PWR supports LVPECL and CML inputs directly due to its 0-V to 4-V common-mode input voltage range and differential input threshold of ±100 mV. No external level-shifting circuitry or bias networks are required-SN65LVDS122PWR interfaces natively with both LVPECL (V_OH ≈ V_CC − 1.3 V) and CML (V_CM ≈ V_CC − 0.2 V) sources when powered from 3.3 V.

How does the S0 and S1 pin configuration affect SN65LVDS122PWR functionality?

S0 and S1 pins configure SN65LVDS122PWR into four distinct functional modes: 2×2 crosspoint (S0=H,S1=H), 2:1 input multiplexer (S0=L,S1=H), 1:2 output splitter (S0=H,S1=L), or dual repeater (S0=L,S1=L). The configuration is latched on rising edge of DE signals, and mode changes occur within ≤2.6 ns (tSWITCH), enabling dynamic reconfiguration during system operation without disrupting signal integrity.

What is the purpose of the 1DE and 2DE pins on SN65LVDS122PWR?

The 1DE and 2DE pins provide independent enable control for each output pair (1Y/1Z and 2Y/2Z) of SN65LVDS122PWR. When asserted high, the corresponding output drives normally; when low, it transitions to high-impedance state within 6–8 ns (tPHZ/tPLZ). This allows precise power gating, hot-swap isolation, or fault containment-critical for protection switching in redundant backplane architectures using SN65LVDS122PWR.

Is SN65LVDS122PWR pin-compatible with other devices in the same family?

Yes, SN65LVDS122PWR is pin-compatible with SN65LVDS22 and SN65LVDM22 in the same TSSOP-16 (PW) package, sharing identical pin assignments, footprint, and solder mask layout. This allows drop-in speed upgrades without PCB redesign. However, SN65LVDT122PWR-while pin-compatible-includes integrated 110-Ω termination resistors, making it unsuitable as a direct replacement unless board-level termination is removed.