ICS8305I datasheet(10/15 Pages) ICST

Il numero della parte	ICS8305I

Spiegazioni elettronici	LOW SKEW, 1-TO-4, MULTIPLEXED DIFFERENTIAL/LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER

PDF	15 Pages

Scroll/Zoom	100%

Produttore elettronici	ICST [Integrated Circuit Systems]

Homepage	http://www.icst.com

Logo

10 / 15 page

Integrated

Circuit

Systems, Inc.

8305AGI

www.icst.com/products/hiperclocks.html

REV. B MAY 19, 2005

ICS8305I

LOW SKEW, 1-TO-4, MULTIPLEXED DIFFERENTIAL/

LVCMOS-TO-LVCMOS/LVTTL FANOUT BUFFER

APPLICATION INFORMATION

FIGURE 2. SINGLE ENDED SIGNAL DRIVING DIFFERENTIAL INPUT

Figure 2 shows how the differential input can be wired to accept

single ended levels. The reference voltage V_REF = V

DD/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

WIRING THE DIFFERENTIAL INPUT TO ACCEPT SINGLE ENDED LEVELS

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

DD = 3.3V, V_REF should be 1.25V

and R2/R1 = 0.609.

V_REF

0.1u

Single Ended Clock Input

CLK

nCLK

VDD

ICS8305I Scheda tecnica(PDF) 10 Page - Integrated Circuit Systems