ICS85357-11 查看數據表（PDF） - Integrated Circuit Systems
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ICS85357-11
Integrated Circuit Systems
ICS85357-11 Datasheet PDF : 12 Pages
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Integrated
Circuit
Systems, Inc.
ICS85357-11
4:1 OR 2:1, CRYSTAL OSCILLATOR-TO-3.3V
LVPECL / ECL MULTIPLEXER
TABLE 1. PIN DESCRIPTIONS
Number
Name
Type
Description
1, 14, 17, 20
2
VCC
XTALIN0
Power
Input
Positive supply pins.
Parallel resonant crystal input.
3
XTALOUT0 Input
Parallel resonant crystal input.
4
XTALIN1
Input
Parallel resonant crystal input.
5
XTALOUT1 Input
Parallel resonant crystal input.
6
XTALIN2
Input
Parallel resonant crystal input.
7
XTALOUT2 Input
Parallel resonant crystal input.
8
XTALIN3
Input
Parallel resonant crystal input.
9
XTALOUT3 Input
Parallel resonant crystal input.
10, 11
12, 13
VEE
Power
nc
Unused
Negative supply pins.
No connect.
15, 16
nQ0, Q0 Output
Differential clock outputs. LVPECL interface levels.
18
SEL0
Input Pulldown Clock select input. LVCMOS / LVTTL interface levels.
19
SEL1
Input Pulldown Clock select input. LVCMOS / LVTTL interface levels.
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
TABLE 2. PIN CHARACTERISTICS
Symbol
CIN
RPULLUP
RPULLDOWN
Parameter
Input Capacitance
Input Pullup Resistor
Input Pulldown Resistor
Test Conditions
Minimum
Typical
4
51
51
Maximum
Units
pF
KΩ
KΩ
TABLE 3A. CONTROL INPUT FUNCTION TABLE
Inputs
SEL1 SEL0
0
0
0
1
1
0
1
1
Clock Out
CLK
XTALIN0, XTALOUT0
XTALIN1, XTALOUT1
XTALIN2, XTALOUT2
XTALIN3, XTALOUT3
85357AG-11
www.icst.com/products/hiperclocks.html
2
REV. C OCTOBER 7, 2004
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