Overview
Description
The 83940I-01 is a low skew, 1-to-18 LVPECL-to-LVCMOS/ LVTTL Fanout Buffer. The 83940I-01 has two selectable clock inputs. The PCLK, nPCLK pair can accept LVPECL or SSTL input levels. The single-ended clock input accepts LVCMOS or LVTTL input levels. The 83940I-01 is characterized at full 3.3V, full 2.5V and mixed 3.3V input and 2.5V output operating supply modes. Guaranteed output and part-to-part skew characteristics make the 83940I-01 ideal for those clock distribution applications demanding well defined performance and repeatability.
Features
- Eighteen LVCMOS/LVTTL outputs, 23Ω typical output impedance
- Selectable LVCMOS_CLK or LVPECL clock inputs
- PCLK, nPCLK pair can accept the following differential input levels: LVPECL, SSTL
- LVCMOS_CLK supports the following input types: LVCMOS or LVTTL
- Maximum output frequency: 175MHz
- Additive phase jitter, RMS: 0.108ps (typical), 3.3V/3.3V
- Output skew: 115ps (maximum)
- Part-to-part skew: 800ps (maximum), 3.3V/3.3V
- Operating supply modes:
Core/Output
3.3V/3.3V
3.3V/2.5V
2.5V/2.5V - -40°C to 85°C ambient operating temperature
- Available in lead-free (RoHS 6) package
Comparison
Applications
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.
Processing table
| TQFP | 32 | Tray | 3 | 0 | 250 | Yes | e3 Sn | -40 to +85°C | 13.55 | ||
| TQFP | 32 | Reel | 3 | 2000 | 0 | Yes | e3 Sn | -40 to +85°C |
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