ICS8523BG IDT, Integrated Device Technology Inc, ICS8523BG Datasheet - Page 8

• Manufacturer Part Number: ICS8523BG
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Driverr

Specifications of ICS8523BG

• Number Of Clock Inputs: 2
• Mode Of Operation: Differential
• Output Frequency: 650MHz
• Output Logic Level: HSTL
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.465V
• Package Type: TSSOP
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 20
• Lead Free Status / RoHS Status: Not Compliant

Parameter Measurement Information, continued
Output Duty Cycle/Pulse Width/Period
Application Information
Wiring the Differential Input to Accept Single Ended Levels
Figure 2 shows how the differential input can be wired to accept
single ended levels. The reference voltage V_REF = V
generated by the bias resistors R1, R2 and C1. This bias circuit
should be located as close as possible to the input pin. The ratio of
R1 and R2 might need to be adjusted to position the V_REF in the
center of the input voltage swing. For example, if the input clock
swing is only 2.5V and V
R2/R1 = 0.609.
IDT™ / ICS™ HSTL FANOUT BUFFER
ICS8523
LOW SKEW, 1-TO-4, DIFFERENTIAL-TO-HSTL FANOUT BUFFER
Qy
Qx
Qy
Qx
tsk(o)
DD
= 3.3V, V_REF should be 1.25V and
DD
/2 is
8
Figure 2. Single-Ended Signal Driving Differential Input
Single Ended Clock Input
C1
0.1u
V_REF
ICS8523CG REV. D MARCH 13, 2007
R1
1K
R2
1K
V
DD
CLK
nCLK