ICS85356 查看數據表（PDF） - Integrated Circuit Systems
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ICS85356 Datasheet PDF : 14 Pages
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Integrated
Circuit
Systems, Inc.
ICS85356I
2:1, DIFFERENTIAL-TO-3.3V
DUAL LVPECL / ECL CLOCK MULTIPLEXER
TABLE 1. PIN DESCRIPTIONS
Number
Name
Type
Description
14, 20
1
VCC
CLK0A
Power
Input
Core supply pin.
Pulldown Non-inverting differential clock input.
2
nCLK0A
Input
Pullup Inverting differential clock input.
3, 8
nc
Unused
No connect.
4
CLK0B
Input Pulldown Non-inverting differential clock input.
5
nCLK0B
Input
Pullup Inverting differential clock input.
6
CLK1A
Input Pulldown Non-inverting differential clock input.
7
nCLK1A
Input
Pullup Inverting differential clock input.
9
CLK1B
Input Pulldown Non-inverting differential clock input.
10
nCLK1B
Input
Pullup Inverting differential clock input.
11
12, 13
VEE
nQ1, Q1
Power
Output
Negative supply pins.
Differential output pairs. LVPECL interface levels.
15
SEL1
Input
Pullup Clock select input. LVCMOS / LVTTL interface levels.
16
COM_SEL
Input Pulldown Common select input. LVCMOS / LVTTL interface levels.
17
SEL0
Input
Pullup Clock select input. LVCMOS / LVTTL interface levels.
18, 19
nQ0, Q0
Output
Differential output pairs. LVPECL interface levels.
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
TABLE 2. PIN CHARACTERISTICS
Symbol
C
IN
RPULLUP
RPULLDOWN
Parameter
Input Capacitance
Input Pullup Resistor
Input Pulldown Resistor
Test Conditions
Minimum
Typical
51
51
Maximum
4
Units
pF
KΩ
KΩ
TABLE 3. CONTROL INPUT FUNCTION TABLE
COM_SEL
0
0
0
0
1
Inputs
SEL1
0
0
1
1
X
SEL0
0
1
0
1
X
Q0
CLK0A
CLK0B
CLK0A
CLK0B
CLK0B
Outputs
nQ0
Q1
nCLK0A
CLK1A
nCLK0B
CLK1A
nCLK0A
CLK1B
nCLK0B
CLK1B
nCLK0B
CLK1B
nQ1
nCLK1A
nCLK1A
nCLK1B
nCLK1B
nCLK1B
85356AMI
www.icst.com/products/hiperclocks.html
2
REV. A OCTOBER 7, 2004
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