SY55854UYI TR Micrel Inc, SY55854UYI TR Datasheet - Page 2

• Manufacturer Part Number: SY55854UYI TR
• Description: IC CROSSPOINT SWITCH 2X2 16-QSOP
• Manufacturer: Micrel Inc
• Series: SY55r

Specifications of SY55854UYI TR

• Function: Crosspoint Switch
• Circuit: 1 x 2:2
• Voltage Supply Source: Single Supply
• Voltage - Supply, Single/dual (±): 2.3 V ~ 5.5 V
• Current - Supply: 60mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-LSSOP (0.154", 3.91mm Width)
• Array Configuration: 2x2
• Number Of Arrays: 1
• Differential Data Transmission: Yes
• Power Supply Requirement: Single
• Pin Count: 16
• Mounting: Surface Mount
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• On-chip Buffers: No
• On-chip Decoder: No
• On-chip Latch Circuit: No
• On-chip Mux/demux: No
• Programmable: No
• Dual Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Dual Supply Voltage (min): Not RequiredV
• Output Level: CML
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: SY55854UYITR; SY55854UYITR

Micrel
Measuring an Eye with SY55854U
using the SY55854U evaluation board.
diagram using the SY55854U evaluation board.
set to about 3.3V. Current consumption will be under 100mA.
Connect the positive power supply to the bottom pin of the
power supply header, marked “V
symbol. Connect the negative power supply to the top pin
of the power supply header.
EVALUATION PROCEDURE
This section describes how to obtain an eye diagram
You will need:
An SY55854U evaluation board
A power supply
A digital signal source capable of generating pseudo-
random patterns at up to 2.5Gbps
An oscilloscope capable of showing eye patterns
Two pairs of length-matched SMA cables
Four 50 termination SMA
The following steps allow the user to generate an eye
1. Connect Power Source: The power supply must be
V
2.3V to 3.0V
3.0V to 5.7V
2.3V to 5.7V
2.3V to 3.0V
3.0V to 5.7V
2.3V to 5.7V
CC
Connection
“S0” open and “/S0” has a 50 cap
“S0” open and “/S0” open
“S0” has a 50 cap and “/S0” open
“S1” open and “/S1” has a 50 cap
“S1” open and “/S1” open
“S1” has a 50 cap and “/S1” open
CC
,” and having a ground
Table 1. Select Settings
2
generate a pseudo-random data stream. Any pattern 2
PRBS or better will do. If there is a choice, use 2
PRBS. Set the data rate to 2.5Gbps. Set the output high
level to be +0V, and the output low level to be –400mV.
the differential output of the signal generator to the “D0”
and the “/D0” SMA connectors.
matched SMA cables, connect “Q0,” and “/Q0” SMA
connectors to the oscilloscope. Connect a trigger output
from the digital generator to the trigger input of the
oscilloscope.
“/D1,” “Q1,” and “/Q1” SMA connectors with 50 terminators.
that the “S0, ”and “/S0,” SMA connectors are open. For
further information regarding how to select various inputs,
please refer to Table 1.
diagram.
2. Connect Data Source: Set your data source to
Using one pair of length matched SMA cables, connect
3. Connect Data Output: Using another pair of length
4. Terminate Unused Inputs and Outputs: Cap the “D1,”
5. Configure the SY55854U Evaluation Board: Ensure
6. View the Eye: Adjust the oscilloscope to show the eye
Function
“Q0” sources “D0”
“Q0” sources “D0”
“Q0” sources “D1”
“Q1” sources “D0”
“Q1” sources “D0”
“Q1” sources “D1”
EVALUATION BOARD
SY55854U
23
7
–1
–1