5962GTBD02QYA View Datasheet(PDF) - Aeroflex UTMC

Part Name

Description

Manufacturer

5962GTBD02QYA

Low Voltage Quad Receiver with Integrated Termination Resistor

Aeroflex UTMC 

Receiver Fail-Safe

The UT54LVDS032LVT receiver is a high gain, high speed

device that amplifies a small differential signal (20mV) to

TTL logic levels. Due to the high gain and tight threshold of

the receiver, care should be taken to prevent noise from

appearing as a valid signal.

The receiver’s internal fail-safe circuitry is designed to

source/sink a small amount of current, providing fail-safe

protection (a stable known state of HIGH output voltage) for

floating, terminated or shorted receiver inputs.

2. Terminated Input. If the driver is disconnected

(cable unplugged), or if the driver is in a three-state

or power-off condition, the receiver output will again

be in a HIGH state, even with the end of cable 100Ω

integrated termination resistor across the input pins.

The unplugged cable can become a floating antenna

which can pick up noise. If the cable picks up more

than 10mV of differential noise, the receiver may see

the noise as a valid signal and switch. To insure that

any noise is seen as common-mode and not

differential, a balanced interconnect should be used.

Twisted pair cable offers better balance than flat

ribbon cable.

1. Open Input Pins. TheUT54LVDS032LVTis a quad

3. Shorted Inputs. If a fault condition occurs that shorts

receiver device, and if an application requires only 1,

the receiver inputs together, thus resulting in a 0V

2 or 3 receivers, the unused channel(s) inputs should

differential input voltage, the receiver output remains

be left OPEN. Do not tie unused receiver inputs to

in a HIGH state. Shorted input fail-safe is not

ground or any other voltages. The input is biased by

supported across the common-mode range of the

internal high value pull up and pull down resistors to

set the output to a HIGH state. This internal circuitry

will guarantee a HIGH, stable output state for open

inputs.

device (VSS to 2.4V). It is only supported with inputs

shorted and no external common-mode voltage

ENT applied.

DEVELOPM

IN

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