ICS853111A Просмотр технического описания (PDF) - Integrated Circuit Systems

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ICS853111A

LOW SKEW, 1-TO-10 DIFFERENTIAL-TO-2.5V/3.3V LVPECL/ECL FANOUT BUFFER

Integrated Circuit Systems 

Integrated

Circuit

Systems, Inc.

ICS853111A

LOW SKEW, 1-TO-10

DIFFERENTIAL-TO-2.5V/3.3V LVPECL/ECL FANOUT BUFFER

APPLICATION INFORMATION

WIRING THE DIFFERENTIAL INPUT TO ACCEPT SINGLE ENDED LVCMOS LEVELS

Figure 2A shows an example of the differential input that can

be wired to accept single ended LVCMOS levels. The reference

voltage level VBB generated from the device is connected to

the negative input. The C1 capacitor should be located as close

as possible to the input pin.

VCC

Single Ended Clock Input

V_REF

C1

0.1u

R1

1K

PCLK

nPCLK

R2

1K

FIGURE 2A. SINGLE ENDED LVCMOS SIGNAL DRIVING DIFFERENTIAL INPUT

WIRING THE DIFFERENTIAL INPUT TO ACCEPT SINGLE ENDED LVPECL LEVELS

Figure 2B shows an example of the differential input that can

be wired to accept single ended LVPECL levels. The reference

voltage level VBB generated from the device is connected to

the negative input. The C1 capacitor should be located as close

as possible to the input pin.

VDD(or VCC)

853111AY

CLK_IN

C1

0.1uF

+

VBB

-

FIGURE 2B. SINGLE ENDED LVPECL SIGNAL DRIVING DIFFERENTIAL INPUT

www.icst.com/products/hiperclocks.html

8

REV. B MAY 14, 2004

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