IDTMC100ES6254FA IDT, Integrated Device Technology Inc, IDTMC100ES6254FA Datasheet - Page 6

• Manufacturer Part Number: IDTMC100ES6254FA
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Driverr

Specifications of IDTMC100ES6254FA

• Number Of Clock Inputs: 2
• Mode Of Operation: Differential
• Output Frequency: 3000MHz
• Output Logic Level: LVPECL
• Operating Supply Voltage (min): 2.375V
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.465V
• Package Type: LQFP
• Operating Temp Range: 0C to 110C
• Operating Temperature Classification: Commercial
• Signal Type: LVPECL
• Mounting: Surface Mount
• Pin Count: 32
• Quiescent Current: 85mA
• Lead Free Status / RoHS Status: Not Compliant

IDT™ 2.5/3.3V Differential LVPECL 2x2 Clock Switch and Fanout Buffer
Freescale Timing Solutions Organization has been acquired by Integrated Device Technology, Inc
MC100ES6254/D
Example Configurations
2x2 clock switch
1:6 Clock Fanout Buffer
Loopback device
SEL0 SEL1
6
System-Rx
System-Tx
MC100ES6254
2.5/3.3V Differential LVPECL 2x2 Clock Switch and Fanout Buffer
0
0
1
1
CLK1
CLK0
SEL0
CLK0
CLK1
0
0
1
1
0
0
0
1
0
1
SEL1
0
1
0
1
Switch configuration
CLK0 clocks system A and system B
CLK1 clocks system A and system B
CLK0 clocks system A and CLK1 clocks system B
CLK1 clocks system B and CLK1 clocks system A
Switch configuration
System loopback
Line loopback
Transmit / Receive operation
System and line loopback
SEL0
SEL1
SEL0
SEL1
MC100ES6254
CLK0
SEL0
SEL1
QB[]
MC100ES6254
MC100ES6254
CLK1
QA[]
Freescale Semiconductor, Inc.
3
3
For More Information On This Product,
System A
System B
Transmitter
Receiver
APPLICATIONS INFORMATION
6
Understanding the junction temperature range of the
MC100ES6254
skew capabilities of the MC100ES6254, the MC100ES6254 is
specified, characterized and tested for the junction temperature
range of T
mance depends on the PCB type, design, thermal management
and natural or forced air convection, the junction temperature
provides an exact way to correlate the application specific con-
ditions to the published performance data of this data sheet.
The correlation of the junction temperature range to the appli-
cation ambient temperature range and vice versa can be done
by calculation:
54.4°C/W (2s2p board, 200 ft/min airflow, refer to table 4) and
a typical power consumption of 467 mW (all outputs terminated
50 Ω to V
temperature
T
ample case calculates to -24.5°C (the maximum ambient tem-
perature is 85.5°C. Refer to Table 8). Exceeding the minimum
junction temperature specification of the MC100ES6254 does
not have a significant impact on the device functionality. How-
ever, the continuous use the MC100ES6254 at high ambient
temperatures requires thermal management to not exceed the
specified maximum junction temperature. Refer to the Applica-
tion Note AN1545 for a power consumption calculation guide-
line.
a.
Maintaining Lowest Device Skew
skew of 50 ps and a part-to-part skew of maximum 250 ps. To
ensure low skew clock signals in the application, both outputs
of any differential output pair need to be terminated identically,
even if only one output is used. When fewer than all nine output
pairs are used, identical termination of all output pairs within the
output bank is recommended. If an entire output bank is not
used, it is recommended to leave all of these outputs open and
unterminated. This will reduce the device power consumption
while maintaining minimum output skew.
Table 8. Ambient temperature ranges (P
A
Natural convection
+ 24.5°C, and the minimum ambient temperature in this ex-
To make the optimum use of high clock frequency and low
Assuming a thermal resistance (junction to ambient) of
The MC100ES6254 device function is guaranteed from T
to T
The MC100ES6254 guarantees low output-to-output bank
100 ft/min
200 ft/min
400 ft/min
800 ft/min
J
=110°C
R
TT
J
thja
=0°C to +110°C. Because the exact thermal perfor-
, V
(2s2p board)
CC
of
=3.3 V, frequency independent), the junction
the
T
J
= T
59.0
54.4
52.5
50.4
47.8
MC100ES6254
A
°C/W
°C/W
°C/W
°C/W
°C/W
+ R
thja
⋅ P
T
-24.5
-23.5
tot
-28
-25
-22
A, min
°C
°C
°C
TIMING SOLUTIONS
tot
°C
°C
is
a
= 467 mW)
approximately
T
85.5°
86.5°C
88
82°C
85°C
MC100ES6254
A, max
A
NETCOM
=-40°C
°C
C