ICS853S202I
12:2, DIFFERENTIAL-TO-3.3V, 2.5V LVPECL MULTIPLEXER
PRELIMINARY
TABLE 1. PIN DESCRIPTIONS (CONTINUED ON NEXT PAGE)
Number
Name
Type
Pullup
Description
1
CLK2
Input
Input
Non-inverting differential clock input.
Pullup/
Pulldown
2
nCLK2
Inverting differential clock input. VCC/2 default when left floating.
3,
4,
9,
SELA_0,
SELA_1,
SELA_2,
SELA_3
Clock select pins for Bank A outputs. See Control Input
Pulldown Function Table. LVCMOS/LVTTL interface levels.
See Table 3B.
Input
10
5, 18, 32, 43
VCC
QA, nQA
VEE
Power
Output
Power
Input
Positive supply pins.
6, 7
8, 15, 22, 29, 39, 46
11
Clock outputs. LVDS interface levels.
Negative supply pins.
CLK3
Pullup
Non-inverting differential clock input.
Pullup/
Pulldown
Pullup/
12
nCLK3
Input
Inverting differential clock input. VCC/2 default when left floating.
13
14
16
17
19
nCLK4
CLK4
nCLK5
CLK5
OEA
Input
Input
Input
Input
Input
Inverting differential clock input. VCC/2 default when left floating.
Non-inverting differential clock input.
Pulldown
Pullup
Pullup/
Pulldown
Inverting differential clock input. VCC/2 default when left floating.
Pullup
Non-inverting differential clock input.
Output enable pin. Controls enabling and disabling of QA/nQA
outputs. LVCMOS/LVTTL internface levels.
Pullup
Pullup/
Pulldown
20
nCLK6
Input
Inverting differential clock input. VCC/2 default when left floating.
21
23
CLK6
CLK7
Input
Input
Pullup
Pullup
Non-inverting differential clock input.
Non-inverting differential clock input.
Pullup/
Pulldown
Pullup/
24
nCLK7
Input
Inverting differential clock input. VCC/2 default when left floating.
25
26
nCLK8
CLK8
Input
Input
Inverting differential clock input. VCC/2 default when left floating.
Non-inverting differential clock input.
Pulldown
Pullup
27,
28,
33,
34
SELB_3,
SELB_2,
SELB_1,
SELB_0
Clock select pins for Bank B outputs. See Control Input
Pulldown Function Table. LVCMOS/LVTTL interface levels.
See Table 3C.
Input
30, 31
nQB1, QB
nCLK9
CLK9
Output
Input
Input
Input
Input
Input
Input
Clock outputs. LVDS interface levels.
Pullup/
35
Inverting differential clock input. VCC/2 default when left floating.
Pulldown
36
Pullup
Non-inverting differential clock input.
Pullup/
Pulldown
37
nCLK10
CLK10
nCLK11
CLK11
Inverting differential clock input. VCC/2 default when left floating.
Non-inverting differential clock input.
38
Pullup
Pullup/
Pulldown
40
Inverting differential clock input. VCC/2 default when left floating.
41
Pullup
Non-inverting differential clock input.
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
IDT™ / ICS™ 3.3V, 2.5V LVPECL MULTIPLEXER
2
ICS853S202AKI REV. A JANUARY 25, 2007