參數(shù)資料
型號(hào): ICS87339AM-01
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 時(shí)鐘及定時(shí)
英文描述: 87339 SERIES, LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
封裝: 7.50 X 12.80 MM, 2.25 MM HEIGHT, MS-013, SOIC-20
文件頁(yè)數(shù): 12/14頁(yè)
文件大?。?/td> 169K
代理商: ICS87339AM-01
87339AM-01
www.icst.com/products/hiperclocks.html
REV. A NOVEMBER 23, 2005
7
Integrated
Circuit
Systems, Inc.
ICS87339-01
LOW SKEW,
÷2/4,÷4/6,
DIFFERENTIAL-TO-3.3V LVPECL / ECL CLOCK GENERATOR
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
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
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
CC = 3.3V, V_REF should be
1.25V and R2/R1 = 0.609.
V_REF
R1
1K
C1
0.1u
R2
1K
Single Ended Clock Input
CLK
nCLK
VCC
INPUTS:
LVCMOS CONTROL PINS:
All control pins have internal pull-ups or pull-downs; additional
resistance is not required but can be added for additional
protection. A 1k
Ω resistor can be used.
RECOMMENDATIONS FOR UNUSED INPUT AND OUTPUT PINS
OUTPUTS:
LVPECL OUTPUT
All unused LVPECL outputs can be left floating. We
recommend that there is no trace attached. Both sides of the
differential output pair should either be left floating or
terminated.
相關(guān)PDF資料
PDF描述
ICS87339AM-11LF LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
ICS87339AM-11LFT LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
ICS87339AG-11T LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
ICS87339AG-11 LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
ICS87339AM-11LFT LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
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