Overview
Description
The 8R9306I 2.5V differential clock buffer is a user-selectable differential input to six LVDS outputs. The fanout from a differential input to six LVDS outputs reduces loading on the preceding driver and provides an efficient clock distribution network. The 8R9306I can act as a translator from a differential HSTL, eHSTL, LVPECL (2.5V), LVPECL (3.3V), CML, or LVDS input to LVDS outputs. A single-ended 3.3V, 2.5V LVTTL input can also be used to translate to LVDS outputs. The redundant input capability allows for an asynchronous change-over from a primary clock source to a secondary clock source. Selectable reference inputs are controlled by SEL. The 8R9306I outputs can be asynchronously enabled/disabled. When disabled, the outputs will drive to the value selected by the GL pin. Multiple power and grounds reduce noise.
Features
- Guaranteed low skew: 40ps (maximum)
- Very low duty cycle distortion: < 125ps (maximum)
- High speed propagation delay: < 1.75ns (maximum)
- Up to 1GHz operation
- Selectable inputs
- Hot insertable and overvoltage tolerant inputs
- 3.3V/2.5V LVTTL, HSTL eHSTL, LVPECL (2.5V), LVPECL (3.3V), CML or LVDS input interface
- Selectable differential inputs to six LVDS outputs
- Power-down mode
- 2.5V VDD
- -40 °C to 85 °C ambient operating temperature
- Available in a VFQFPN package
Comparison
Applications
Applications
- Clock distribution
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.