DS92LV1224TMSA

Overview

The DS92LV1224 is a 30-66 MHz, 10-bit Bus LVDS deserializer designed for high-speed unidirectional serial data transmission. It converts a single differential serial data stream back into a 10-bit wide parallel data bus while recovering the parallel clock. The device operates with a supply voltage range of 3.0 V to 3.6 V and supports data rates up to 660 Mb/s. Typical power consumption is less than 300 mW at 66 MHz. It features a flow-through pinout in a 28-lead SSOP package, synchronization modes, and a LOCK indicator.

Feature Summary

• Robust Bus LVDS serial data transmission with embedded clock for exceptional noise immunity and low EMI
• Clock recovery from PLL lock to random data patterns without requiring specific sync sequences
• Ensures transition every data transfer cycle to maintain reliable synchronization
• Programmable edge trigger on clock allows flexible timing configuration

Applications

• High-speed unidirectional serial data transmission over FR-4 printed circuit board backplanes
• Data transmission over balanced copper cables
• Parallel-to-serial and serial-to-parallel conversion in chipset configurations

Procurement Notes

Verify the component revision and manufacturing date code against the latest Texas Instruments documentation. Confirm that the 28-lead SSOP package matches the design footprint requirements. Ensure the operating temperature range meets the application's environmental specifications. Check for any specific ordering suffixes that may affect availability or packaging format.

Selection Notes

Select this deserializer when paired with a compatible 10-bit serializer like the DS92LV1023E. Ensure the system requires a single differential pair to eliminate multi-channel skew. Verify that the REFCLK frequency aligns with the TCLK input range of 30 MHz to 66 MHz. Consider the power-down state requirements if low power consumption is critical during idle periods.

Part Context

The DS92LV1224 belongs to the DS92LV1224 series of LVDS interface ICs manufactured by Texas Instruments. It is part of a chipset solution that includes serializers for complete serial-to-parallel and parallel-to-serial data links. This family is designed to simplify PCB design by narrowing data paths and reducing the number of layers required for high-speed interfaces.

Replacement Considerations

SN65LV1224BDBG4

FAQ

How does the DS92LV1224 handle loss of lock during data transmission?

If the Deserializer loses lock, the LOCK output goes high and outputs enter TRI-STATE. The system can detect this and pulse the Serializer SYNC1 or SYNC2 pins to resynchronize. Up to three cycles of previously received data may be invalid due to detection delay.

What is the purpose of the failsafe biasing resistors?

External pull-up and pull-down resistors are used to prevent noise pickup when the receiver input is not actively driven, such as when an input cable is disconnected. This prevents unintentional locking caused by the device's high sensitivity.

Can the DS92LV1224 support hot insertion?

Yes, the device supports hot insertion into a running backplane. It can attain lock to a data stream without special SYNC patterns, allowing it to operate in open-loop applications where the data stream is essentially random.