描述 Description

The 8P791208 is a low additive jitter 2:8 buffer with CMOS/

differential outputs The device takes one or two reference clocks,

selects between them using a pin selection, and generates up to

eight outputs that are the same as the reference frequency.

The 8P791208 supports two output banks, each with its own

power supply. All outputs in one bank would generate the same

output frequency, but each output can be individually controlled for

output type or output enable.

The device can operate over the -40°C to 85°C temperature

range.

特性 Features

? Accepts input frequencies ranging from 1PPS (1Hz) to 700MHz

? Two differential inputs support LVPECL, LVDS, LVHSTL,

HCSL, or LVCMOS reference clocks

? Generates 8 differential or 16 LVCMOS outputs

? Outputs arranged in two banks of four outputs each

? Select pins control which input drives which of two output

banks

? Controlled by 3-level input pins that are 3.3V tolerant for all

core voltages

? Output type may be selected from LVPEC, LVDS or

2xLVCMOS

? Each bank supports a separate power supply of 3.3V, 2.5V,

or 1.8V

? LVCMOS outputs are limited to 125MHz maximum and support

swings of 3.3V, 2.5V, 1.8V, and 1.5V

? Individual output enables and output type selection supported

? Output noise floor of –158dBc/Hz at 156.25MHz

? Core voltage supply of 3.3V, 2.5V, or 1.8V

? –40°C to 85°C ambient operating temperature

? Lead-free (RoHS 6) QFN-32 (5 × 5mm) packaging