SY55857LKGTR MICREL [Micrel Semiconductor], SY55857LKGTR Datasheet - Page 5

• Manufacturer Part Number: SY55857LKGTR
• Description: 3.3V, 2.5Gbps ANY INPUT-to-LVPECL DUAL TRANSLATOR
• Manufacturer: MICREL [Micrel Semiconductor]

Micrel, Inc.
Establishing Static Logic Inputs
complement inputs to ground, but not both. A logic zero is
achieved by connecting the complement input to ground
with the true input floating. For a TTL input, tie a 2.5k
resistor between the complement input and ground. See
“Input Interface” section.
Input Levels
connected directly to the D inputs. Depending on the actual
worst case voltage seen, performance of SY55857L varies
as per the following table:
M9999-082306
[e-mail] or [phone]
FUNCTIONAL DESCRIPTION
Do not leave unused inputs floating. Tie either the true or
LVDS, CML and HSTL differential signals may be
Input Voltage
0 to V
0 to 2.4V
Range
CC
+0.3
Table 1. Input Voltage Swings
Voltage Swing
Minimum
100mV
200mV
Translation Speed
Maximum
1.25Gbps
2.5Gbps
5
supported. Due to the current required by the input structure
shown in Figure 2, mutli-drop and multi-point architectures
are not supported.
For LVDS applications, only point-to-point interfaces are
Figure 2. Simplified Input Structure
/D
D
IN
IN
1.05k
1.05k
R1
R1
1.5k
R2
GND
V
CC
R2
1.5k
SuperLite™
SY55857L