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SY89847U
  • SY89847U

SY89847U

In Production

The SY89847U is a 2.5V, 1:5 LVDS fanout buffer with a 2:1 differential input multiplexer (MUX). A unique Fail-Safe Input (FSI) protection prevents metastable output conditions when the selected input clock fails to a DC voltage (voltage between the pins of the differential input drops significantly below 100mV).The differential input includes Micrel's unique, 3-pin internal termination architecture that can interface to any differential signal (AC- or DC-coupled) as small as 100mV (200mVPP) without any level shifting or termination resistor networks in the signal path. The outputs are LVDS compatible with very fast rise/fall times guaranteed to be less than 210ps.The SY89847U operates from a 2.5V ±5% supply and is guaranteed over the full industrial temperature range of -40°C...

Microchip Technology SY89847U Product Info

16 April 2026 0

Parameters

Description

2:5

Input

ANY

Output

LVDS

Supply Voltage

2.5

Max Freq (GHz)

1.5

Icc (mA)

90

Max Within Device Skew (ps)

20

OE

True

Input Mux

True

Number Of Outputs

0

Buffer Type

Fanout

Fanout

1:5

Max Prop Delay (ps)

1000

Features

    • Selects between two sources, and provides 5 precision LVDS copies
    • Prevents outputs from oscillating when input is invalid
    • DC-to >1.5GHz throughput
    • <1000ps Propagation Delay (IN-to-Q)
    • <210ps Rise/Fall times
    • 150fsRMS phase jitter (typ.)
    • <0.7psRMS MUX crosstalk induced jitter
    • Unique, patented MUX input isolation design minimizes adjacent channel crosstalk
    • Unique, patented internal termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS)
    • Wide input voltage range VCC to GND
    • 2.5V ±5% supply voltage
    • -40°C to +85°C industrial temperature range
    • Available in 32-pin (5mm x 5mm) QFN package

Description

The SY89847U is a 2.5V, 1:5 LVDS fanout buffer with a 2:1 differential input multiplexer (MUX). A unique Fail-Safe Input (FSI) protection prevents metastable output conditions when the selected input clock fails to a DC voltage (voltage between the pins of the differential input drops significantly below 100mV).The differential input includes Micrel's unique, 3-pin internal termination architecture that can interface to any differential signal (AC- or DC-coupled) as small as 100mV (200mVPP) without any level shifting or termination resistor networks in the signal path. The outputs are LVDS compatible with very fast rise/fall times guaranteed to be less than 210ps.The SY89847U operates from a 2.5V ±5% supply and is guaranteed over the full industrial temperature range of -40°C to +85°C. The SY89847U is part of Micrel's high-speed, Precision Edge® product line.

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