MC100LVEL39: 3.3 V ECL ÷·2/4, ÷·4/6 Clock Generation Chip

The MC100LVEL39 is a low skew 2/4, 4/6 clock generation chip designed explicitly for low skew clock generation applications. The internal dividers are synchronous to each other, therefore, the common output edges are all precisely aligned. The device can be driven by either a differential or single-ended input signal. In addition, by using the VBB output, a sinusoidal source can be AC coupled into the device. The common enable (ENbar) is synchronous so that the internal dividers will only be enabled/disabled when the internal clock is already in the LOW state. This avoids any chance of generating a runt clock pulse on the internal clock when the device is enabled/disabled as can happen with an asynchronous control. An internal runt pulse could lead to losing synchronization between the internal divider stages. The internal enable flip-flop is clocked on the falling edge of the input clock, therefore, all associated specification limits are referenced to the negative edge of the clock input. Upon startup, the internal flip-flops will attain a random state; therefore, for systems which utilize multiple LVEL39s, the master reset (MR) input must be asserted to ensure synchronization. For systems which only use one LVEL39, the MR pin need not be exercised as the internal divider design ensures synchronization between the 2/4 and the 4/6 outputs of a single device. The VBB pin, an internally generated voltage supply, is available to this device only. For single-ended input conditions, the unused differential input is connected to VBB as a switching reference voltage. VBB may also rebias AC coupled inputs. When used, decouple VBB and VCC via a 0.01 F capacitor and limit current sourcing or sinking to 0.5 mA. When not used, VBB should be left open.

Features
  • 50 ps Maximum Output-to-Output Skew
  • Synchronous Enable/Disable
  • Master Reset for Synchronization
  • ESD Protection: >2 KV HBM
  • The 100 Series Contains Temperature Compensation
  • PECL Mode Operating Range: VCC = 3.0 V to 3.8 V with VEE = 0 V
  • NECL Mode Operating Range: VCC = 0 V with VEE = -3.0 V to -3.8 V
  • Internal Input Pulldown Resistors
  • Meets or Exceeds JEDEC Spec EIA/JESD78 IC Latchup Test
  • Flammability Rating: UL-94 code V-0 @ 1/8", Oxygen Index 28 to 34
  • Transistor Count = 419 devices
  • Pb-Free Packages are Available
Application Notes (15)
Document TitleDocument ID/SizeRevisionRevision Date
AC Characteristics of ECL DevicesAND8090/D (896.0kB)1
Clock Generation and Clock and Data Marking and Ordering Information GuideAND8002/D (71kB)12
Clock Management Design Using Low Skew and Low Jitter DevicesTND301/D (205.0kB)0
Designing with PECL (ECL at +5.0 V)AN1406/D (105.0kB)2
ECL Clock Distribution TechniquesAN1405/D (54.0kB)1
ECLinPS, ECLinPS Lite, ECLinPS Plus and GigaComm Marking and Ordering Information GuideAND8002 (71kB)12
Interfacing Between LVDS and ECLAN1568/D (121.0kB)11
Interfacing with ECLinPSAND8066/D (72kB)3
Odd Number Divide By Counters with 50% Outputs and Synchronous ClocksAND8001/D (90.0kB)0
Phase Lock Loop General OperationsAND8040/D (64.0kB)3
Storage and Handling of Drypack Surface Mount DeviceAND8003/D (49kB)2Mar, 2016
Termination of ECL Logic DevicesAND8020/D (176.0kB)6
The ECL Translator GuideAN1672/D (142.0kB)12
Thermal Analysis and Reliability of WIRE BONDED ECLAND8072/D (119.0kB)5
Using Wire-OR Ties in ECLInPS™ DesignsAN1650/D (1130.0kB)3
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
3.3 V ECL 2/4, 4/6 Clock Generation ChipMC100LVEL39/D (154kB)11Jul, 2016
Simulation Models (2)
Document TitleDocument ID/SizeRevisionRevision Date
IBIS Model for MC100LVEL39DW 3.3VMC100LVEL39DW_33.IBS (20.0kB)4
Low Voltage ECLinPS SPICE Modeling KitAN1560/D (88.0kB)5
Package Drawings (1)
Document TitleDocument ID/SizeRevision
SOIC-20 WB751D-05 (36.3kB)H
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
MC100LVEL39DWR2GActivePb-free Halide freeSOIC-20W751D-053Tape and Reel1000Contact BDTIC
Specifications
ProductTypeInput LevelOutput LevelVCC Typ (V)fMax Typ (MHz)tpd Typ (ns)tR & tF Max (ps)
MC100LVEL39DWR2GDividerECL LVDSECL3.310001.05550
3.3 V ECL 2/4, 4/6 Clock Generation Chip (154kB) MC100LVEL39
AC Characteristics of ECL Devices NB100LVEP91
Clock Generation and Clock and Data Marking and Ordering Information Guide NB100LVEP91
Clock Management Design Using Low Skew and Low Jitter Devices MC10H604
Designing with PECL (ECL at +5.0 V) NB100LVEP91
ECL Clock Distribution Techniques NB100LVEP91
ECLinPS, ECLinPS Lite, ECLinPS Plus and GigaComm Marking and Ordering Information Guide NB100LVEP91
Interfacing Between LVDS and ECL NB100ELT23L
Interfacing with ECLinPS NB100LVEP91
Odd Number Divide By Counters with 50% Outputs and Synchronous Clocks NUP4201
Phase Lock Loop General Operations MC10H604
Storage and Handling of Drypack Surface Mount Device NB3U23C
Termination of ECL Logic Devices NB100LVEP91
The ECL Translator Guide NB100LVEP91
Thermal Analysis and Reliability of WIRE BONDED ECL NB100LVEP91
Using Wire-OR Ties in ECLInPS™ Designs MC10H351
IBIS Model for MC100LVEL39DW 3.3V MC100LVEL39
Low Voltage ECLinPS SPICE Modeling Kit MC100LVELT23
SOIC-20 WB NLSX3018