SN65LV1021DB

Overview

The SN65LV1021DB is a serializer component within the Texas Instruments SN65LV1021/SN65LV1212 chipset, designed for transmitting parallel data over LVDS differential backplanes. It accepts a system clock from 10 MHz to 40 MHz and converts 10-bit parallel inputs into a serial stream at 12 times the clock frequency. The device operates on a single 3 V to 3.6 V supply with typical power consumption under 350 mW at 40 MHz. It features LVTTL-compatible inputs and outputs, internal start/stop bit framing, and programmable edge triggering for flexible PCB layout.

Feature Summary

• Supports rapid synchronization via internally generated SYNC patterns for deterministic lock establishment
• Capable of random-lock synchronization to allow operation in open-loop applications and hot insertion
• Includes dedicated LOCK indicator output to monitor deserializer PLL status
• Provides low-power sleep mode to reduce current consumption when no data transfer is required

Applications

• Serializing parallel data for transmission over LVDS differential backplanes
• Connecting systems requiring high-speed data transfer at equivalent word rates from 10 MHz to 40 MHz
• Implementing point-to-point or limited multipoint connections using unshielded twisted pair (UTP)

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and environmental compliance. Ensure the design utilizes the paired SN65LV1212 deserializer for complete functionality. Confirm that the application environment remains within the specified industrial temperature range of -40°C to 85°C during operation.

Selection Notes

Select this serializer when interfacing with the SN65LV1212 deserializer for a 10-bit LVDS link. Ensure the system clock source provides a stable frequency between 10 MHz and 40 MHz. Verify that the input data meets the LVTTL voltage levels and that the board layout accommodates the 28-pin SSOP package dimensions.

Part Context

This component belongs to the SN65LV1021 family of serializers. It functions as part of a paired chipset with the SN65LV1212 deserializer. The series supports 10-bit serialization at speeds up to 40 MHz, providing a cost-effective solution for moving parallel data across differential links without requiring external components for the PLL.

Replacement Considerations

The SN65LV1021DB is a pin-compatible superset of the National Semiconductor DS92LV1021. When replacing legacy designs, verify that the electrical characteristics and timing parameters of the SN65LV1021 meet the original system requirements.