ICS85301AKLFT IDT, Integrated Device Technology Inc, ICS85301AKLFT Datasheet - Page 11

• Manufacturer Part Number: ICS85301AKLFT
• Description: IC MUX 2:1 DIFF-LVPECL 16-VFQFPN
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: HiPerClockS™r
• Type: Multiplexerr

Specifications of ICS85301AKLFT

• Number Of Circuits: 1
• Ratio - Input:output: 2:1
• Differential - Input:output: Yes/Yes
• Input: CML, LVDS, LVPECL
• Output: LVPECL
• Frequency - Max: 3GHz
• Voltage - Supply: 2.375 V ~ 3.465 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-VFQFN
• Frequency-max: 3GHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 85301AKLFT

T
Figure 4A and Figure 4B show examples of termination for 2.5V
LVPECL driver. These terminations are equivalent to terminating
50 to V
T
The expose metal pad provides heat transfer from the device to
the P.C. board. The expose metal pad is ground pad connected
to ground plane through thermal via. The exposed pad on the
device to the exposed metal pad on the PCB is contacted through
IDT
F
ERMINATION FOR
HERMAL
ICS85301
2:1, DIFFERENTIAL-TO-LVPECL MULTIPLEXER
IGURE
VCC=2.5V
VCC=2.5V
™
/ ICS
F
IGURE
2,5V LVPECL
Driv er
2,5V LVPECL
Driv er
CC
™
4A. 2.5V LVPECL D
- 2V. For V
2:1, LVPECL MULTIPLEXER
R
4C. 2.5V LVPECL T
ELEASE
Zo = 50 Ohm
Zo = 50 Ohm
Zo = 50 Ohm
Zo = 50 Ohm
SIGNAL
TRACE
SOLDER M ASK
2.5V LVPECL O
CC
P
= 2.5V, the V
ATH
F
GROUND PLANE
IGURE
RIVER
2.5V
R1
250
ERMINATION
CC
5. P.C. B
R2
62.5
R1
50
- 2V is very close to ground
T
ERMINATION
R3
250
UTPUT
R4
62.5
R2
50
OARD FOR
E
XAMPLE
+
-
+
-
E
2.5V
2.5V
XAMPLE
E
XPOSED
THERM AL VIA
11
P
AD
level. The R3 in Figure 4B can be eliminated and the termination
is shown in Figure 4C.
solder as shown in Figure 5. For further information, please refer
to the Application Note on Surface Mount Assembly of Amkor’s
Thermally /Electrically Enhance Leadframe Base Package, Amkor
Technology.
F
T
EXPOSED PAD
VCC=2.5V
IGURE
HERMAL
2,5V LVPECL
Driv er
4B. 2.5V LVPECL D
R
ELEASE
Zo = 50 Ohm
Zo = 50 Ohm
Expose Metal Pad
(GROUND PAD)
P
ATH
E
SOLDER
ICS85301 REV. B DECEMBER 22, 2006
XAMPLE
RIVER
R1
50
T
ERMINATION
R2
50
R3
18
SIGNAL
TRACE
+
-
E
2.5V
XAMPLE