ICS853S54I_17 Datasheet, PDF (1/21 Pages) Integrated Device Technology – Dual 2:1, 1:2 Differential-to-LVPECL/ECL Multiplexer

Dual 2:1, 1:2 Differential-to-LVPECL/ECL
Multiplexer
ICS853S54I
DATA SHEET
General Description
The ICS853S54I is a dual 2:1 and 1:2 Multiplexer. The 2:1 Multiplex-
er allows one of 2 inputs to be selected onto one output pin and the
1:2 MUX switches one input to one of two outputs. This device is
useful for multiplexing multi-rate Ethernet PHYs which have 100 M
bit and 1000 bit transmit/receive pairs onto an optical SFP module
which has a single transmit/receive pair. See Application Section for
further information.
The ICS853S54I is optimized for applications requiring very high
performance and has a maximum operating frequency of 2.5GHz.
The device is packaged in a small, 3mm x 3mm VFQFN package,
making it ideal for use on space-constrained boards.
Features
• Three differential LVPECL output pairs
• Three differential LVPECL clock inputs
• PCLKx/nPCLKx pairs can accept the following differential input
levels: LVPECL, LVDS, CML
• Maximum output frequency: 2.5GHz
• Part-to-part skew: 200ps (maximum)
• Propagation delay: QA, nQA: 450ps (maximum)
QBx, nQBx: 420ps (maximum)
• LVPECL mode operating voltage supply range:
V_CC = 2.375V to 3.465V, V_EE = 0V
• ECL mode operating voltage supply range:
V_CC = 0V, V_EE = -3.465V to -2.375V
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) packaging
Block Diagram
CLK_SELA ^Pulldown
PCLKA0 ^Pulldown
nPCLKA0 ^{Pullup/Pulldown}
PCLKA1 ^Pulldown
nPCLKA1 ^{Pullup/Pulldown}
PCLKB ^Pulldown
nPCLKB ^{Pullup/Pulldown}
CLK_SELB ^Pulldown
0
QA
nQA
1
QB0
nQB0
QB1
nQB1
Pin Assignment
16 15 14 13
QB0 1
12 PCLKA0
nQB0 2
11 nPCLKA0
QB1 3
10 PCLKA1
nQB1 4
9 nPCLKA1
5 6 78
ICS853S54I
16-Lead VFQFN
Top View
ICS853S54AKI May 27, 2017
1
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