The 5P1105 is a programmable fanout buffer intended for high performance consumer, networking, industrial, computing, and data-communications applications. Configurations may be stored in on-chip One-Time Programmable (OTP) memory or changed using I²C interface.
 
The outputs are generated from a single reference clock. The reference clock can come from one of the two redundant clock inputs. A glitchless manual switchover function allows one of the redundant clocks to be selected during normal operation. Two select pins allow up to 4 different configurations to be programmed and accessible using processor GPIOs or bootstrapping. The device is available in 24-pin VFQFPN 4mm x 4mm package, with an industrial operating temperature range of -40° to +85°C.

Features

  • Up to four high performance universal differential output pairs:
    • Low RMS additive phase jitter: 0.2ps
  • Four banks of internal non-volatile in-system programmable or factory programmable OTP memory
  • I²C serial programming interface
  • One additional LVCMOS output clock
  • Four universal output pairs:
    • Each configurable as one differential output pair or two LVCMOS outputs
  • I/O Standards:
    • Single-ended I/Os: 1.8V to 3.3V LVCMOS
    • Differential I/Os - LVPECL, LVDS and HCSL
  • Input frequency ranges:
    • LVCMOS Reference Clock Input (XIN / REF) – 1MHz to 200MHz
    • LVDS, LVPECL, HCSL Differential Clock Input (CLKIN, CLKINB) – 1MHz to 350MHz
    • Crystal frequency range: 8MHz to 40MHz
  • Individually selectable output voltage (1.8V, 2.5V, 3.3V) for each output pair
  • Redundant clock inputs with manual switchover
  • Programmable crystal load capacitance
  • Individual output enable/disable
  • Power-down mode
  • 1.8V, 2.5V or 3.3V core VDDD, VDDA

Product Options

This device is factory-configurable. Try the Custom Part Configuration Utility.
Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
5P1105A000NLGI Active NLG24P2 VFQFPN 24 I Yes Tray
Availability
5P1105A000NLGI8 Active NLG24P2 VFQFPN 24 I Yes Reel
Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
5P1105 Datasheet Datasheet PDF 444 KB
User Guides & Manuals
5P1103 / 5P1105 Register Descriptions and Programming Guide Guide PDF 431 KB
Programmable Clock Buffer 5P1105/5P1103 Evaluation Board Manual - Eval Board PDF 721 KB
Timing Commander Installation Guide Guide PDF 497 KB
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 322 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 170 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 495 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 442 KB
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 120 KB
AN-834 Hot-Swap Recommendations Application Note PDF 153 KB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
PCNs & PDNs
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility Product Change Notice PDF 983 KB
PCN# : W1602-01 300mm wafer size from 200mm wafer size at Global Foundries Product Change Notice PDF 344 KB
Other
Timing Solutions Products Overview Overview PDF 4.11 MB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB
5P1103/5P1105 Programmable Universal Output Buffers Product Brief PDF 832 KB
5P1105 Reference Schematic Schematic PDF 31 KB

Software & Tools

Title Other Languages Type Format File Size Date
Timing Commander Installer (v1.15.0.27471) Software ZIP 19.57 MB
Programmable Clock Buffer Personality File Software ZIP 2.83 MB
Timing Commander Software for Programmable Buffers Manual - Software PDF 1011 KB
5P1105 IBIS Model Model - IBIS ZIP 399 KB

Evaluation Boards

Part Number Title Sort ascending
EVK-5P1105 Evaluation Board for 5P1105 Universal Output Buffer