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Product Overview  


For complete documentation, see the data sheet.

Printed On: 7/11/2015

NB3N853531E: Xtal Input or LVTTL / LVCMOS Input Mux - 2:1, 3.3 V, Fanout Buffer- 1:4 LVPECL

Product Description
The NB3N853531E is a low skew 3.3 V supply 2:1:4 clock distribution fanout buffer. An input MUX selects either a Fundamental Parallel Mode Crystal or a LVCMOS/LVTTL Clock by using the CLK_SEL pin (HIGH for Crystal, LOW for Clock) with LVCMOS / LVTTL levels. The single ended CLK input is translated to four LVPECL Outputs. Using the crystal input, the NB3N853531E can be a Clock Generator. A CLK_EN pin can enable or disable the outputs synchronously to eliminate runt pulses using LVCMOS/LVTTL levels (HIGH to enable outputs, LOW to disable output).
Features   Benefits
     
  • Four Differential LVPECL Outputs
 
  • Multiple copies of the Clock
  • Selectable Crystal or LVCMOS/LVTTL CLOCK Inputs
 
  • Accepts inexpensive crystals
  • Operating Range: VCC = 3.3 5% V( 3.135 to 3.465 V)
 
  • Ensures operation in the majority of designs
  • PbFree TSSOP20 Package
 
  • Meets all green international materials standards
  • Up to 266 MHz Clock Operation
   
  • Output to Output Skew: 30 ps (Typ)
   
  • Device to Device Skew 200 ps (Max)
   
  • Propagation Delay 1.8 ns (Max)
   
  • Additive Phase Jitter, RMS: 0.053 ps (Typ.)
   
  • Synchronous Clock Enable Control
   
Applications   End Products
  • Gigibit Ethernet
  • SONET/SDH
  • Teleconmmunications
 
  • LAN/WAN
  • Enterprise Servers
  • ATE
  • Test and Measurement
Selected Electrical Specifications

Product Compliance Status Description Type Channels Input / Output Ratio Input Level Output Level VCC Typ (V) tJitterRMS Typ (ps) tskew(o-o) Max (ps) tpd Typ (ns) tR & tF Max (ps) fmaxClock Typ (MHz) fmaxData Typ (Mbps) Package Type
 Pb-free 
 Halide free 
 Active     Xtal Input or LVTTL / LVCMOS Input Mux - 2:1, 3.3 V, Fanout Buffer- 1:4 LVPECL   Buffer   1   2:1:4 
 Crystal 
 LVCMOS 
 LVTTL 
 LVPECL   3.3   0.053   30     600       TSSOP-20 
 Pb-free 
 Halide free 
 Active     Xtal Input or LVTTL / LVCMOS Input Mux - 2:1, 3.3 V, Fanout Buffer- 1:4 LVPECL   Buffer   1   2:1:4 
 Crystal 
 LVCMOS 
 LVTTL 
 LVPECL   3.3   0.053   30     600       TSSOP-20 
Package Availability
Type
PB free
Standard
TSSOP-20 x