SY55857LKI Micrel Inc, SY55857LKI Datasheet - Page 5

• Manufacturer Part Number: SY55857LKI
• Description: IC TRANSLATOR DUAL LVPECL 10MSOP
• Manufacturer: Micrel Inc
• Series: SY55r

Specifications of SY55857LKI

• Logic Function: Translator
• Number Of Bits: 2
• Input Type: CML, CMOS, HSTL, LVDS, TTL
• Output Type: LVPECL
• Data Rate: 2.5Gbps
• Number Of Channels: 2
• Number Of Outputs/channel: 1
• Differential - Input:output: Yes/Yes
• Propagation Delay (max): 0.4ns
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Supply Voltage: 3 V ~ 3.6 V
• Logic Family: ECL
• Logical Function: Translator
• Technology: ECL
• High Level Output Current: -50mA
• Low Level Output Current: 50mA
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Abs. Propagation Delay Time: 400ps
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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