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SY89218U

Features: • Low-skew LVDS output banks with independentlyprogrammable ÷1, ÷2 and ÷4 divider options• Four output banks, 15 total outputs• Guaranteed AC performance over temperature and voltage: Accepts a clock frequency up to 1.5GHz <1600ps IN-to-OUT propagation delay <200p...

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SeekIC No. : 004510308 Detail

SY89218U: Features: • Low-skew LVDS output banks with independentlyprogrammable ÷1, ÷2 and ÷4 divider options• Four output banks, 15 total outputs• Guaranteed AC performance over temperature...

SY89218U Data Sheet

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Part Number:
SY89218U
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:

• Low-skew LVDS output banks with independently
programmable ÷1, ÷2 and ÷4 divider options
• Four output banks, 15 total outputs
• Guaranteed AC performance over temperature and voltage:
Accepts a clock frequency up to 1.5GHz
<1600ps IN-to-OUT propagation delay
<200ps rise/fall time
<35ps within bank skew
• Fail Safe Input
Prevents outputs from oscillating
• Ultra-low jitter design:
<1psRMS random jitter
<10psPP total jitter (clock)
• Patent-pending input termination and VT pin accepts
DC- and AC-coupled inputs (CML, PECL, LVDS)
• LVDS-compatible outputs
• CMOS/TTL-compatible output enable (EN) and
divider select control
• 2.5V ±5% power supply
• 40°C to +85°C temperature range
• Available in 64-pin TQFP




Application

• All SONET/SDH applications
• All Fibre Channel applications
• All Gigabit Ethernet applications




Pinout

Connection Diagram




Specifications

Supply Voltage (VCC) ................................... 0.5V to +4.0V
Input Voltage (VIN) ......................................... 0.5V to VCC
Termination Current
Source or sink current on VT ................................... ±100mA
Input Current
Source or sink current on IN, /IN................................ ±50mA
VREF-AC Current(3)
Source or sink current on VREF-AC............................... ±2mA
Lead Temperature (soldering, 20sec.)..........................260°C
Storage Temperature (Ts)...........................65°C to +150°C




Description

The SY89218U is a 2.5V precision, high-speed, integrated clock divider and LVDS fanout buffer capable of handling clocks up to 1.5GHz. Optimized for communications applications, the four independently controlled output banks are phase-matched and can be configured for pass through (÷1), ÷2 or ÷4 divider ratios.

The differential input of SY89218U includes Micrel's unique, 3-pin input termination architecture that allows the user to 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 low-skew, low-jitter outputs are LVDS compatible with extremely fast rise/fall times guaranteed to be less than 200ps.

The /MR (master reset) input of SY89218U asynchronously resets the outputs. A four-clock delay after de-asserting /MR allows the counters to synchronize and start the outputs from the same state without any runt pulse.

The SY89218U is part of Micrel's Precision Edge® product family. All support documentation can be found at Micrel's web site at: www.micrel.com.






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