Data Sheet ZL40235 Low Skew, Low Additive Jitter 3 x 5 LVPECL/LVDS/HCSL Fanout Buffer with one LVCMOS output Ordering Information Features ZL40235LDG1 40 pin QFN Trays 3 to 1 input Multiplexer: Two inputs accept any ZL40235LDF1 40 pin QFN Tape and Reel differential (LVPECL, HCSL, LVDS, SSTL, CML, LVCMOS) or a single ended signal and the third Package size: 6 x 6 mm input accepts a crystal or a single ended signal -40 C to +85 C Five differential LVPECL/LVDS/HCSL outputs and one LVCMOS output Applications Ultra-low additive jitter: 24fs (integration band 12kHz General purpose clock distribution to 20MHz at 625MHz clock frequency) Low jitter clock trees Supports clock frequencies from 0 to 1.6GHz Logic translation Supports 2.5V or 3.3V power supplies for LVPECL, Clock and data signal restoration LVDS or HCSL outputs Wired communications: OTN, SONET/SDH, GE, 10 GE, FC and 10G FC Supports 1.5V, 1,8V, 2.5V or 3.3V power supplies for LVCMOS output PCI Express generation 1/2/3/4 clock distribution Embedded Low Drop Out (LDO) Voltage regulator Wireless communications provides superior Power Supply Noise Rejection High performance microprocessor clock distribution Maximum output to output skew of 40ps Test Equipment Device controlled via SPI or hardware pins SEL OE SPI Slave LVCMOS OE/ SPI CS b SPI CS b Registers: xtal buf gain 7:0 Bank A xtal drive level 7:0 IN SEL0 IN SEL0/ xtal load cap 7:0 SPI CLK SPI CLK input select 1:0 OUT0 p output drive low OUT0 n IN SEL1/ driver type 7:0 (diff) IN SEL1 driver type 9:8 (diff) SPI SDI SPI SDIO cmos div 2:0 (cmos) OUT1 p output enable (cmos) SPI SDO driver strength (cmos) OUT1 n Device ID Bank B OUT2 p OUT2 n OUT TYPE SEL0 OUT TYPE SEL1 OUT3 p OUT3 n IN0 p IN0 n OUT4 p OUT4 n IN1 p IN1 n DIV OUT LVCMOS 1to8 ZL40235 XOUT XIN Figure 1. Functional Block Diagram ZL40235 October 2018 1 2018 Microsemi Corporation Data Sheet ZL40235 Table of Contents Features ..................................................................................................................................... 1 Applications................................................................................................................................ 1 Table of Contents ...................................................................................................................... 2 Pin Diagram ............................................................................................................................... 5 Pin Descriptions ......................................................................................................................... 6 Functional Description ............................................................................................................... 9 Clock Inputs ............................................................................................................................... 9 Clock Outputs .......................................................................................................................... 12 Crystal Oscillator Input ............................................................................................................. 13 Termination of unused inputs and outputs .............................................................................. 13 Power Consumption ................................................................................................................ 13 Power Supply Filtering ............................................................................................................. 14 Power Supplies and Power-up Sequence ............................................................................... 14 Host Interface .......................................................................................................................... 14 Typical device performance ..................................................................................................... 19 Register Map ........................................................................................................................... 23 AC and DC Electrical Characteristics ...................................................................................... 29 Absolute Maximum Ratings ..................................................................................................... 29 Recommended Operating Conditions ..................................................................................... 29 Change History ........................................................................................................................ 48 Package Outline ...................................................................................................................... 49 ZL40235 October 2018 2 2018 Microsemi Corporation