ICS8536AG-02LF IDT, Integrated Device Technology Inc, ICS8536AG-02LF Datasheet - Page 11

• Manufacturer Part Number: ICS8536AG-02LF
• Description: IC CLK FANOUT BUFFER 24TSSOP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: HiPerClockS™r
• Type: Fanout Buffer (Distribution), Multiplexerr

Specifications of ICS8536AG-02LF

• Number Of Circuits: 1
• Ratio - Input:output: 3:6
• Differential - Input:output: No/Yes
• Input: LVCMOS, LVTTL, Crystal
• Output: LVPECL
• Frequency - Max: 266MHz
• Voltage - Supply: 2.375 V ~ 3.465 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 24-TSSOP (0.173", 4.40mm Width)
• Frequency-max: 266MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ICS8536-02 Data Sheet
Termination for 3.3V LVPECL Outputs
The clock layout topology shown below is a typical termination for
LVPECL outputs. The two different layouts mentioned are
recommended only as guidelines.
The differential outputs are low impedance follower outputs that
generate ECL/LVPECL compatible outputs. Therefore, terminating
resistors (DC current path to ground) or current sources must be
used for functionality. These outputs are designed to drive 50Ω
Figure 4A. 3.3V LVPECL Output Termination
ICS8536AG-02 REVISION A JULY 21, 2010
RTT =
((V
3.3V
OH
LVPECL
+ V
OL
) / (V
1
CC
Z
Z
– 2)) – 2
o
o
= 50Ω
= 50Ω
* Z
R1
50Ω
o
RTT
R2
50Ω
V
+
_
CC
3.3V
- 2V
Input
11
transmission lines. Matched impedance techniques should be used
to maximize operating frequency and minimize signal distortion.
Figures 4A and 4B show two different layouts which are
recommended only as guidelines. Other suitable clock layouts may
exist and it would be recommended that the board designers
simulate to guarantee compatibility across all printed circuit and clock
component process variations.
Figure 4B. 3.3V LVPECL Output Termination
1-TO-6, DUALCRYSTAL/LVCMOS-TO-3.3V, 2.5V LVPECL FANOUT BUFFER
3.3V
LVPECL
Z
Z
o
o
= 50Ω
= 50Ω
R3
125Ω
©2010 Integrated Device Technology, Inc.
R1
84Ω
3.3V
R4
125Ω
R2
84Ω
+
_
3.3V
Input