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This eight-port repeater is designed for high-speed interconnects utilizing Low Voltage Differential Signaling (LVDS) technology.
The FIN1108 accepts and outputs LVDS levels with a typical differential output swing of 330mV, which provides low EMI at ultra-low power dissipation even at high frequencies. The FIN1108 provides a VBB reference for AC coupling on the inputs. In addition, the FIN1108 can directly accept LVPECL, HSTL, and SSTL-2 for translation to LVDS.
FIN1108 Maximum Ratings
Product
Product status
Eco Status
Pricing*
Package type
Leads
Packing method
Package Drawing
Package Marking Convention**
FIN1108MTD
Full Production
RoHS Compliant
$2.79
TSSOP
48
RAIL
Line 1:$Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: FIN1108
FIN1108MTDX
Full Production
RoHS Compliant
$2.14
TSSOP
48
TAPE REEL
Line 1:$Y (Fairchild logo) &Z (Asm. Plant Code) &2 (2-Digit Date Code) &K Line 2: FIN1108
* Fairchild 1,000 piece Budgetary Pricing
** A sample button will appear if the part is available through Fairchild's on-line samples program. If there is no sample button, please contact a Fairchild distributor to obtain samples
Package marking information for product FIN1108 is available. Click here for more information .
FIN1108 Features
Greater than 800 Mbps data rate 3.3V power supply operation 3.5 ps maximum random jitter and 135 ps maximum deterministic jitter Wide rail-to-rail common mode range LVDS receiver inputs accept LVPECL, HSTL, and SSTL-2 directly Ultra low power consumption 20 ps typical channel-to-channel skew Power off protection > 7.5 kV HBM ESD Protection Meets or exceeds the TIA/EIA-644-A LVDS standard Available in space saving 48-lead TSSOP package Open circuit fail safe protection VBB reference output FIN1108T (RT) features Internal Termination Resistors
FIN1108 Typical Application
For LVDS signaling in point-to-point applications, receivers or repeaters with on-chip termination are preferable to reduce the overshoot or undershoot due to the reflection caused by stubs at receiver inputs. As a rule of thumb, usually the termination resistor for an LVDS receiver should be placed as close as possible to the receiver, especially for high speed applications. If the distance between termination resistors and receivers is too long, the interconnection will be seen as an un-terminated stub which can produce reflections resulting in higher EMI. Internal termination can effectively smooth out this ringing which can otherwise jeopardize the receiver noise margin. This is important for reliable high-speed operation with tighter required signal settling times. Below is a list of the advantages/disadvantages of internal termination.
Internal termination is not suitable for all applications. In order to set a proper VOD at the driver outputs, receivers with on-chip termination resistors only work for point-topoint applications since multi-drop applications would require termination resistor for each receiver, reducing the equivalent termination to RT/n. This would reduce the driver output swing by n.