General Description
The ICS840272I is a PLL-based Frequency Translator intended for
use in Synchronous Ethernet applications. This high performance
device is optimized to generate 25MHz and 8kHz LVCMOS clock
outputs. The ICS840272I accepts the following differential or
single-ended input signals: 161.1328125MHz (10GbE Mode),
156.25MHz (1GbE Mode), or 125MHz (Recovered clock from
10/100/1000BaseT Ethernet PHY). The extended temperature
range supports telecommunication and networking end equipment
requirements.

Features
• Two single-ended outputs (LVCMOS or LVTTL levels),
output impedance: 17
• Single-ended lock detect output (LVCMOS or LVTTL levels)
• Two selectable differential clock inputs
• Differential input pair (CLKx, nCLKx) accepts LVPECL, LVDS,
LVHSTL, SSTL, HCSL input levels
• Internal resistor bias on nCLK pin allows the user to drive CLK
input with external single-ended (LVCMOS/ LVTTL) input levels
• Selectable input frequencies: 161.1328MHz, 156.25MHz or
125MHz
• Output frequency: 25MHz, 8kHz
• Full 3.3V supply voltage
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) packaging