ICS8537-01
HEX, LOW SKEW, 1-TO-2
DIFFERENTIAL-TO-3.3V/2.5V LVPECL CLOCK BUFFER
TABLE 1. PIN DESCRIPTIONS
Number
Name
Type
Description
1, 2
nQ4A, Q4A
Output
Power
Differential output pair. LVPECL interface levels.
3, 10, 27, 34,
39, 46
VCCO
Output supply pins.
4, 5
6, 31, 42
7, 30, 43
8, 9
Q4B, nQ4B
VCC
Output
Power
Power
Output
Output
Input
Differential output pair. LVPECL interface levels.
Core supply pins.
VEE
Negative supply pins.
nQ5B, Q5B
Q5A, nQ5A
CLK5
Differential output pair. LVPECL interface levels.
Differential output pair. LVPECL interface levels.
11, 12
13
Pullup
Pulldown Non-inverting differential clock input.
Pullup Non-inverting differential clock input.
Pulldown Inverting differential clock input.
Pullup Non-inverting differential clock input.
Pulldown Inverting differential clock input.
Pullup Non-inverting differential clock input.
Pulldown Inverting differential clock input.
Pullup Non-inverting differential clock input.
Pulldown Inverting differential clock input.
Pullup Non-inverting differential clock input.
Pulldown Inverting differential clock input.
Differential output pair. LVPECL interface levels.
Inverting differential clock input.
14
nCLK5
Input
15
CLK4
Input
16
nCLK4
Input
17
CLK3
Input
18
nCLK3
Input
19
CLK2
Input
20
nCLK2
Input
21
CLK1
Input
22
nCLK1
Input
23
CLK0
Input
24
nCLK0
Input
25, 26
28, 29
32, 33
35, 36
37, 38
40, 41
44, 45
47, 48
nQ0A, Q0A
Q0B, nQ0B
nQ1A, Q1A
Q1B, nQ1B
nQ2A, Q2A
Q2B, nQ2B
nQ3A, Q3A
Q3B, nQ3B
Output
Output
Output
Output
Output
Output
Output
Output
Differential output pair. LVPECL interface levels.
Differential output pair. LVPECL interface levels.
Differential output pair. LVPECL interface levels.
Differential output pair. LVPECL interface levels.
Differential output pair. LVPECL interface levels.
Differential output pair. LVPECL interface levels.
Differential output pair. LVPECL interface levels.
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
8537AY-01
www.idt.com
REV.B NOVEMBER 22, 2010
2