SN65LVDS32D
SN65LVDS32D - 400 Mbps Quad LVDS Receiver | Texas Instruments
Texas Instruments SN65LVDS32D is a 400 Mbps quad high-speed differential receiver designed for low-voltage differential signaling (LVDS), supplied from a single 3.3 V supply and housed in a 16-pin SOIC package. It provides four differential receiver channels, differential input thresholds of 100 mV maximum, typical propagation delay of 2.1 ns, and typical power dissipation of 60 mW. The receiver is intended for systems requiring reliable high-speed differential input reception under industrial and automotive-qualified conditions.
An LVDS receiver is an interface circuit that converts a small differential voltage across a balanced pair into a digital logic signal. It belongs to the receiver and transceiver interface IC category, within broader communication-interface and signal-conditioning electronics. Differential reception rejects common-mode noise and helps maintain signal integrity across longer interconnects or cables than ordinary single-ended logic receivers. The SN65LVDS32D implements the electrical characteristics associated with ANSI TIA/EIA-644, as identified in the manufacturer product data.
Key features include four independent receiver channels, operation from one 3.3 V supply, signaling rates up to 400 Mbps, 100 mV maximum differential input threshold, and open-circuit fail-safe behavior suitable for cold-sparing and redundant systems. The manufacturer product page also identifies pin compatibility with AM26LS32, MC3486, and µA9637. Automotive qualification and ESD protection features make the device relevant to industrial control, communications, test equipment, and vehicle electronics where differential signaling is required.
The electrical performance is centered on low-latency differential reception. A typical 2.1 ns propagation delay is useful when the system must preserve timing relationships across multiple channels. The 60 mW typical power dissipation provides a practical baseline for power budgeting, although actual dissipation depends on supply voltage, input activity, output loading, and operating temperature. The single-supply architecture simplifies system power design while requiring correct input common-mode and termination practices.
Typical applications include industrial automation links, high-speed data acquisition, point-to-point communications, test and measurement equipment, and automotive or other harsh-environment interfaces. In these systems, the receiver is placed after a balanced transmission line and connected to downstream digital logic through its four differential receiver outputs. Designers should verify the complete channel budget, cable or PCB loss, termination, grounding, and input common-mode range in the system-level design.
A key design consideration is preserving the LVDS signal path: use controlled-impedance routing, matched differential pair geometry, appropriate termination, and short return paths to avoid degrading the 400 Mbps target. Do not treat the receiver as a general-purpose comparator or add logic without checking the output timing, supply requirements, and pin-specific electrical limits. This page combines the verified manufacturer and distributor information with practical LVDS design guidance for component selection and implementation.
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