ICS85214I Datasheet, PDF (9/15 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-5 DIFFERENTIAL-TO-HSTL FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
ICS85214I
LOW SKEW, 1-TO-5
DIFFERENTIAL-TO-HSTL FANOUT BUFFER
SCHEMATIC EXAMPLE
Figure 4 shows a schematic example of the ICS85214I. In
this example, the input is driven by an ICS HiPerClockS HSTL
driver. The decoupling capacitors should be physically located
near the power pin. For ICS85214I, the unused outputs can
be left floating.
U1
1.8V
Zo = 50 Ohm
Zo = 50 Ohm
LVHSTL Driver
R9
50
R12
R10
50
1K
C2
0.1u
3.3V
11
12
13
14
15
16
17
18
19
1.8V 20
GND
CLK_SEL
nc
nCLK
CLK
SCLK
nc
VDD
nCLK_EN
VDDO
C1
0.1u ^ICI^SC⁸S⁵8²52¹1⁴4^I
R11
1K
10
nQ4 ₉
Q4 ₈
nQ3 ₇
Q3
nQ2
Q2
nQ1
Q1
nQ0
Q0
6
5
4
3
2
1
Zo = 50
Zo = 50
+
-
R2
R1
50
50
Zo = 50
Zo = 50
+
-
R4
R3
50
50
Zo = 50
Zo = 50
+
-
R8
R7
50
50
FIGURE 4. ICS85214I HSTL BUFFER SCHEMATIC EXAMPLE
85214AGI
www.icst.com/products/hiperclocks.html
9
REV. A JUNE 1, 2005