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SY89838U

Features: • Selects between two clocks, and provides 8precision, low skew LVDS output copies• 2:1 MUX input provides a glitch-free, stable LVDS output• Guaranteed AC performance over temperatureand supply voltage: Wide operating frequency: 1kHz to >1.5GHz <150ps tr/tf <4...

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SeekIC No. : 004510380 Detail

SY89838U: Features: • Selects between two clocks, and provides 8precision, low skew LVDS output copies• 2:1 MUX input provides a glitch-free, stable LVDS output• Guaranteed AC performance ov...

SY89838U Data Sheet

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Part Number:
SY89838U
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

• Selects between two clocks, and provides 8
precision, low skew LVDS output copies
• 2:1 MUX input provides a glitch-free, stable LVDS output
• Guaranteed AC performance over temperature
and supply voltage:
Wide operating frequency: 1kHz to >1.5GHz
<150ps tr/tf
<40ps output-to-output skew
• Unique patent-pending input isolation design
minimizes crosstalk
• Fail-safe input prevents oscillation
• 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)
• 350mV LVDS output swing
• Power supply 2.5V +5%
• 40°C to +85°C industrial temperature range
• Available in 32-pin (5mm x 5mm) MLF® package




Application

• Redundant clock switchover
• Failsafe clock protection




Pinout

Connection Diagram




Specifications

Supply Voltage (VCC) ..........................-0.5V to +4.0V
Input Voltage (VIN) ............................... -0.5V to VCC
Input Current
Source or sink current on IN, /IN.................... ±50mA
Termination Current
Source or sink current on VT ........................ ±100mA
VREF-AC Source or sink current ....................... ±2mA
Lead Temperature (soldering, 20 sec.) ..........+260°C
Storage Temperature (Ts)..................65°C to 150°C




Description

The SY89838U is a low jitter, low skew, high-speed 1:8 fanout buffer with a unique, 2:1 differential input multiplexer (MUX) optimized for redundant source switchover applications. Unlike standard multiplexers, the SY89838U 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 SY89838U distributes clock frequencies from 1kHz to 1.5GHz, guaranteed, over temperature and voltage.
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 outputs are 350mV compatible
LVDS with fast rise/fall times guaranteed to be less than 150ps.
The SY89838U operates from a 2.5V ±5% supply and is guaranteed over the full industrial temperature range of 40°C to +85°C. For applications that require 800mV LVPECL outputs,
consider the SY89837U. The SY89838U 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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