DATASHEET
12:2, Differential-To-LVDS Multiplexer ICS854S202I-01
ICS854S202AYI-01 REV. A DECEMBER 18, 2012 1 ©2012 Integrated Device Technology, Inc.
General Description
The ICS854S202I-01 is a 12:2 Differential-to-LVDS Clock Multiplexer
which can operate up to 3GHz. The ICS854S202I-01 has twelve se-
lectable differential clock inputs, any of which can be independently
routed to either of the
two LVDS outputs. The CLKx, nCLKx input
pairs can accept LVPECL, LVDS or CML levels. The fully differential
architecture and low propagation delay make it ideal for use in clock
distribution circuits.
Features
Two differential 2.5V LVDS clock outputs
Twelve selectable differential clock inputs
CLKx, nCLKx pairs can accept the following differential input levels:
LVPECL, L
VDS, CML
Maximum output frequency: 3GHz
Propagation delay: 1.1ns (maximum)
Input skew: 100ps (maximum)
Output skew: 50ps (maximum)
Part-to-part skew: 250ps (maximum)
Additive phase jitter, RMS (12kHz – 20MHz): 0.16ps (typical)
Full 2.5V operating supply mode
-40°C to 85°C ambient operating temperature
Block Diagram
QA
nQA
OEA
QB
nQB
OEB
Pulldown
Pulldown
Pulldown
Pulldown
Pulldown
Pulldown
Pulldown
Pulldown
Pulldown
Pulldown
Pulldown
Pulldown
Pulldown
Pullup/Pulldown
Pullup/Pulldown
Pullup/Pulldown
Pullup/Pulldown
Pullup/Pulldown
Pullup/Pulldown
Pullup/Pulldown
Pullup/Pulldown
Pullup/Pulldown
Pullup/Pulldown
P
ullup/Pulldown
Pullup/Pulldown
Pulldown
4
4
SELA_[3:0]
CLK0
nCLK0
SELB_[3:0]
CLK1
nCLK1
CLK2
nCLK2
CLK3
nCLK3
CLK8
nCLK8
CLK9
nCLK9
CLK10
nCLK10
CLK11
nCLK11
CLK4
nCLK4
CLK5
nCLK5
CLK6
nCLK6
CLK7
nCLK7
Pullup
Pullup
1
2
3
4
5
6
7
8
9
10
11
12
CLK9
nCLK9
SELB_0
SELB_1
V
DD
QB
nQB
GND
SELB_2
SELB_3
CLK8
nCLK8
nCLK1
CLK1
GND
nCLK0
CLK0
V
DD
OEB
CLK11
nCLK11
GND
CLK10
nCLK10
36
35
34
33
32
31
30
29
28
27
26
25
CLK2
nCLK2
SELA_0
SELA_1
V
DD
QA
nQA
GND
SELA_2
SELA_3
CLK3
nCLK3
nCLK4
CLK4
GND
nCLK5
CLK5
V
DD
OEA
CLK6
nCLK6
GND
CLK7
nCLK7
13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 37
ICS854S202I-01
48-Pin LQFP
7mm x 7mm x 1.4mm
package body
Y Package
Top View
0IN !SSIGNMENT
ICS854S202AYI-01 REV. A DECEMBER 18, 2012 2 ©2012 Integrated Device Technology, Inc.
ICS854S202I-01 Data Sheet 12:2, DIFFERENTIAL-TO-LVDS MULTIPLEXER
Table 1. Pin Descriptions
Number Name Type Description
1 CLK2 Input Pulldown Non-inverting differential clock input.
2 nCLK2 Input Pullup/Pulldown Inverting differential clock input. V
DD
/2 default when left floating.
3,
4,
9,
10
SELA_0,
SELA_1,
SELA_2,
SELA_3
Input Pulldown
Clock select pins for Bank A output pair. See Control Input Function
Table. LVCMOS/LVTTL interface levels. See Table 3B.
5, 18, 32, 43 V
DD
Power Power supply pins.
6, 7 QA, nQA Output Clock outputs. LVDS interface levels.
8, 15, 22, 29,
39, 46
GND Power Power supply ground.
11 CLK3 Input Pulldown Non-inverting differential clock input.
12 nCLK3 Input Pullup/Pulldown Inverting differential clock input. V
DD
/2 default when left floating.
13 nCLK4 Input Pullup/Pulldown Inverting differential clock input. V
DD
/2 default when left floating.
14 CLK4 Input Pulldown Non-inverting differential clock input.
16 nCLK5 Input Pullup/Pulldown Inverting differential clock input. V
DD
/2 default when left floating.
17 CLK5 Input Pulldown Non-inverting differential clock input.
18, 43 V
DD
Power Positive supply pins.
19 OEA Input Pullup
Output enable pin. Controls enabling and disabling of QA, nQA
output pair. LVCMOS/LVTTL interface levels.
20 CLK6 Input Pulldown Non-inverting differential clock input.
21 nCLK6 Input Pullup/Pulldown Inverting differential clock input. V
DD
/2 default when left floating.
23 CLK7 Input Pulldown Non-inverting differential clock input.
24 nCLK7 Input Pullup/Pulldown Inverting differential clock input. V
DD
/2 default when left floating.
25 nCLK8 Input Pullup/Pulldown Inverting differential clock input. V
DD
/2 default when left floating.
26 CLK8 Input Pulldown Non-inverting differential clock input.
27,
28,
33,
34
SELB_3,
SELB_2,
SELB_1,
SELB_0
Input Pulldown
Clock select pins for Bank B output pair. See Control Input Function
Table. LVCMOS/LVTTL interface levels. See Table 3C.
30, 31 nQB, QB Output Clock outputs. LVDS interface levels.
35 nCLK9 Input Pullup/Pulldown Inverting differential clock input. V
DD
/2 default when left floating.
36 CLK9 Input Pulldown Non-inverting differential clock input.
37 nCLK10 Input Pullup/Pulldown Inverting differential clock input. V
DD
/2 default when left floating.
38 CLK10 Input Pulldown Non-inverting differential clock input.
40 nCLK11 Input Pullup/Pulldown Inverting differential clock input. V
DD
/2 default when left floating.
41 CLK11 Input Pulldown Non-inverting differential clock input.
42 OEB Input Pullup
Output enable pin. Controls enabling and disabling of QB, nQB
output pair. LVCMOS/LVTTL interface levels.
44 CLK0 Input Pulldown Non-inverting differential clock input.
ICS854S202AYI-01 REV. A DECEMBER 18, 2012 3 ©2012 Integrated Device Technology, Inc.
ICS854S202I-01 Data Sheet 12:2, DIFFERENTIAL-TO-LVDS MULTIPLEXER
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Table 3A. OEA, OEB Control Input Function Table
45 nCLK0 Input Pullup/Pulldown Inverting differential clock input. V
DD
/2 default when left floating.
47 CLK1 Input Pulldown Non-inverting differential clock input.
48 nCLK1 Input Pullup/Pulldown Inverting differential clock input. V
DD
/2 default when left floating.
Symbol Parameter Test Conditions Minimum Typical Maximum Units
C
IN
Input Capacitance 2 pF
R
PULLUP
Input Pullup Resistor 51 k:
R
PULLDOWN
Input Pulldown Resistor 51 k:
Input Output
OEA, OEB QA, nQA, QB, nQB
0 Disabled (Logic LOW)
1 Active (default)
Number Name Type Description

854S202AYI-01LFT

Mfr. #:
Manufacturer:
IDT
Description:
Clock Drivers & Distribution 12:2 Differential LVDS Multiplexer
Lifecycle:
New from this manufacturer.
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