LTC1519IS#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC1519IS#TRPBF is a high-speed, precision delay quad line receiver manufactured by Analog Devices Inc. It operates from a single 5V supply and supports data rates up to 52Mbps. The device features a propagation delay of 18.5ns with a tolerance of -3.5ns over the commercial temperature range (0°C to 70°C). Typical skew for both input-to-output transitions and channel-to-channel timing is 500ps. It accommodates an RS485 input common mode range of –7V to 12V and includes guaranteed fail-safe operation. The component is housed in a 16-lead plastic SO package.

Drivers, Receivers, Transceivers Feature Summary

• Precision propagation delay architecture ensures stable timing performance across wide input common mode and ambient temperature ranges.
• Integrated fail-safe mechanism guarantees a high output state when inputs are shorted or left floating within the entire common mode range.
• Hot Swap capability allows connection without loading data lines due to high input resistance even when unpowered.
• Short-circuit protection limits output current to prevent latchup damage during fault conditions.

Drivers, Receivers, Transceivers Applications

• High speed RS485/RS422 receivers
• STS-1/OC-1 data receivers
• PECL line receivers
• Level translators
• Fast-20/Fast-40 SCSI receivers

Drivers, Receivers, Transceivers Procurement Notes

Verify that the ordering suffix #TRPBF corresponds to the tape and reel packaging format as specified in the manufacturer's documentation. Confirm that the IS suffix indicates the industrial temperature grade (-40°C to 85°C) rather than the commercial grade. Ensure compatibility with the 16-lead SO package dimensions before integration into the PCB layout.

Drivers, Receivers, Transceivers Selection Notes

Select this component when precise timing synchronization is required for differential bus applications. The low skew characteristics make it suitable for clocked data systems where duty cycle distortion must be minimized. Consider the 52Mbps maximum data rate limit and the specific enable pin configuration of the LTC1519 compared to the LTC1518 variant.

Drivers, Receivers, Transceivers Part Context

The LTC1519 is part of the LTC1518/LTC1519 family of precision delay RS485 quad line receivers. It is pin-compatible with the older LTC488 and LTC489 models, facilitating direct upgrades for improved speed and timing accuracy. The device shares architectural similarities with other high-speed receivers like the LTC1520 but offers distinct enable control configurations.

Drivers, Receivers, Transceivers Replacement Considerations

The LTC1518 is a pin-compatible alternative with a different enable structure. The LTC488 and LTC489 are legacy replacements offering lower data rates. Verify that any substitute maintains the required propagation delay stability and common mode voltage range specifications.

Drivers, Receivers, Transceivers FAQ

How does the LTC1519 handle unconnected inputs?

The device features a fail-safe mechanism that guarantees a logic HIGH output state when the differential inputs are shorted or left open (floating), preventing false data pulses caused by noise.

What is the typical skew specification for this receiver?

The typical tPLH/tPHL skew and channel-to-channel skew are both specified at 500ps under standard load conditions.

Can the LTC1519 be used for hot swapping applications?

Yes, the receiver has an input resistance of at least 22kΩ even when unpowered, allowing it to be connected to live data lines without loading them.