ICS8533-01 datasheet(8/13 Pages) ICST

Part #	ICS8533-01

Description	LOW SKEW, 1-TO-4 DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER

PDF	13 Pages

Scroll/Zoom	100%

Manufacturer	ICST [Integrated Circuit Systems]

Direct Link	http://www.icst.com

Logo

8 / 13 page

8533AG-01

www.icst.com/products/hiperclocks.html

REV. B JULY 16, 2001

Integrated

Circuit

Systems, Inc.

ICS8533-01

LOW SKEW, 1-TO-4

DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER

APPLICATION INFORMATION

WIRING THE DIFFERENTIAL INPUT TO ACCEPT SINGLE ENDED LEVELS

CLK_IN

0.1uF

V_REF

CLK_IN

0.1uF

V_REF

FIGURE 8: SINGLE ENDED SIGNAL DRIVING DIFFERENTIAL INPUT

Figure 8 shows how the differential input can be wired to accept single end levels. The reference voltage V_REF ~

CC/2 is 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

CC = 3.3V, V_REF should be 1.25V and

R2/R1 = 0.609.

ICS8533-01 Datasheet(PDF) 8 Page - Integrated Circuit Systems