ICS85356I Datasheet, PDF (2/14 Pages) Integrated Circuit Systems – 2:1, DIFFERENTIAL-TO-3.3V DUAL LVPECL / ECL CLOCK MULTIPLEXER

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
V_CC
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
V_EE
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
R_PULLUP
R_PULLDOWN
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