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SY89842U

Features: • Selects between two sources, and provides a glitchfree, stable CML output• Guaranteed AC performance over temperature and supply voltage: Wide operating frequency: 1kHz to >1.5GHz < 840ps In-to-Out tpd < 80ps tr/tf• Unique, patent-pending input isolation desi...

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SeekIC No. : 004510383 Detail

SY89842U: Features: • Selects between two sources, and provides a glitchfree, stable CML output• Guaranteed AC performance over temperature and supply voltage: Wide operating frequency: 1kHz to &g...

SY89842U Data Sheet

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Part Number:
SY89842U
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/12/23

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Product Details

Description



Features:

• Selects between two sources, and provides a glitchfree, stable CML output
• Guaranteed AC performance over temperature and supply voltage:
Wide operating frequency: 1kHz to >1.5GHz
< 840ps In-to-Out tpd
< 80ps tr/tf
• Unique, patent-pending input isolation design minimizes crosstalk
• Fail-safe input prevents oscillations
• Ultra-low jitter design:
<1psRMS random jitter
<1psRMS cycle-to-cycle jitter
<10psPP total jitter (clock)
<0.7psRMS MUX crosstalk induced jitter
• Unique patent-pending input termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS)
• 400mV CML output swing
• 2.5V ±5% or 3.3V ±10% supply voltage
• -40°C to +85°C industrial temperature range
• Available in 16-pin (3mm x 3mm) MLF™ package




Application

• Redundant clock switchover
• Fail-safe clock protection




Pinout

Connection Diagram




Specifications

Supply Voltage (VCC) ..........................0.5V to +4.0V
Input Voltage (VIN) ................................0.5V to VCC
CML Output Voltage (VOUT) .. VCC1.0V to VCC+0.5V
CML Input Current (IIN) ...............................................
Source/Sink Current on IN, /IN ................ ±50mA
Source/Sink Current on VT ..................... ±100mA
VREF-AC Current
Source/Sink Current on VREF-AC.................. ±2mA
Lead Temperature (soldering, 20 sec.) .........+260°C
Storage Temperature (Ts)...............65°C to 150°C






Description

The SY89842U is a low jitter CML, 2:1 differential input multiplexer (MUX) optimized for redundant source switchover applications. Unlike standard multiplexers, the SY89842U unique 2:1 Runt Pulse Eliminator (RPE) MUX prevents any short cycles or "runt" pulses during switchover. In addition, a unique Fail-Safe Input protection prevents metastable
conditions when the selected input clock fails to a DC voltage (voltage between the pins of the differential input drops below 100mV).
The differential input includes Micrel's unique, 3-pin input termination architecture that allows customers to interface to any differential signal (AC- or DCcoupled) as small as 100mV (200mVPP) without any level shifting or termination resistor networks in the signal path. The output is 400mV CML with fast rise/fall times guaranteed to be less than 80ps.
The SY89842U operates from a 2.5V ±5% or 3.3V ±10% supply and is guaranteed over the full industrial temperature range of 40°C to +85°C. The SY89842U is part of Micrel's high-speed, Precision Edge® product line. All support documentation can be found on Micrel's web site at: www.micrel.com.






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