Description
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 different selections may be used for
different operating modes (full function, partial function, partial
power-down), regional standards (US, Japan, Europe) or
system production margin testing.
The device may be configured to use one of two I2C
addresses to allow multiple devices to be used in a system.

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
• I
2C 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
• Available in 24-pin VFQFPN 4mm x 4mm package
1 • -40° to +85°C industrial temperature operation