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NB3L204K: 2.5V, 3.3V Differential 1:4 HCSL Fanout Buffer

Datasheet: 2.5V, 3.3V Differential 1:4 HCSL Fanout Buffer
Rev. 1 (400kB)
Product Overview
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The NB3L204K is a differential 1:4 Clock fanout buffer with High−speed Current Steering Logic (HCSL) outputs. Inputs can directly accept differential LVPECL, LVDS, and HCSL signals. Single−ended LVPECL, HCSL, LVCMOS, or LVTTL levels are accepted with a proper external Vth reference supply per Figures 4 and 6. The input signal will be translated to HCSL and provides four identical copies operating up to 350 MHz. The NB3L204K is optimized for ultra−low phase noise, propagation delay variation and low output–to–output skew, and is DB400H compliant. As such, system designers can take advantage of the NB3L204K’s performance to distribute low skew clocks across the backplane or the motherboard making it ideal for Clock and Data distribution applications such as PCI Express, FBDIMM, Networking, Mobile Computing, Gigabit Ethernet, etc. Output drive current is set by connecting a 475  resistor from IREF (Pin 14) to GND per Figure 11. Outputs can also interface to LVDS receivers when terminated per Figure 12.
Features
 
  • Maximum Input Clock Frequency > 350 MHz
  • 2.5 V ±5% / 3.3 V ±10% Supply Voltage Operation
  • 4 HCSL Outputs
  • DB400H Compliant
  • Individual OE Control Pin for Each Bank of Outputs
  • 100 ps Max Output−to−Output Skew Performance
  • 1 ns Typical Propagation Delay
  • 450 ps Typical Rise and Fall Times
  • 80 fs Maximum Additive Phase Jitter RMS
  • PCIE Gen 3 and Gen 4 Compliant
Applications
  • Mobile Computing
  • Networking
  • Gigabit Ethernet
  • FBDIMM
  • PCI Express Gen 3 and Gen 4
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NB3L204KMNG Active
Pb-free
Halide free
NB3L204K QFN-24 485DJ 1 260 Tube 92 Contact Sales Office
NB3L204KMNTXG Active
Pb-free
Halide free
NB3L204K QFN-24 485DJ 1 260 Tape and Reel 3000 Contact Sales Office
Market Leadtime (weeks) : 2 to 4
ON Semiconductor   (2020-09-02 00:00) : 10,120
Market Leadtime (weeks) : 2 to 4

Product
Description
Pricing ($/Unit)
Compliance
Status
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
NB3L204KMNG  
Pb
H
 Active   
Buffer
1
1:4
HCSL
LVDS
LVPECL
HCSL
2.5
3.3
0.046
20
1
700
350
QFN-24
NB3L204KMNTXG  
Pb
H
 Active   
Buffer
1
1:4
HCSL
LVDS
LVPECL
HCSL
2.5
3.3
0.046
20
1
700
350
QFN-24
Case Outlines
485DJ   
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