描述 Description

The 8S89831I is a high speed 1-to-4 Differential- to-LVPECL/ECL

Fanout Buffer. The 8S89831I is optimized for high speed and very

low output skew, making it suitable for use in demanding applications

such as SONET, 1 Gigabit and 10 Gigabit Ethernet, and Fiber

Channel. The internally terminated differential input and VREF_AC pin

allow other differential signal families such as LVDS, LVHSTL and

CML to be easily interfaced to the input with minimal use of external

components.

The device also has an output enable pin which may be useful for

system test and debug purposes. The 8S89831I is packaged in a

small 3mm x 3mm 16-pin VFQFN package which makes it ideal for

use in space-constrained applications.

特性 Features

? Four LVPECL/ECL outputs

? IN, nIN input can accept the following differential input levels:

LVPECL, LVDS, CML, SSTL

? 50? internal input termination to VT

? Output frequency: >2.1GHz

? Output skew: 30ps (maximum)

? Part-to-part skew: 185ps (maximum)

? Additive phase jitter, RMS: 0.31ps (typical)

? Propagation Delay: 570ps (maximum)

? LVPECL mode operating voltage supply range:

VCC = 2.5V±5, 3.3V±5, VEE = 0V

? ECL mode operating voltage supply range:

VCC = 0V, VEE = -3.3V±5, -2.5V±5

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

? Available in lead-free (RoHS 6) package

? Supports ≤105°C board temperature operations