ICS85354 Datasheet, PDF (1/16 Pages) Integrated Circuit Systems – DUAL 2:1/1:2 DIFFERENTIAL -TO-LVPECL/ECL MULTIPLEXER

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS85354
DUAL 2:1/1:2
DIFFERENTIAL -TO-LVPECL/ECL MULTIPLEXER
GENERAL DESCRIPTION
ICS
The ICS85354 is a 2:1/1:2 Multiplexer and a mem-
ber of the HiPerClockS^TM family of high perfor-
HiPerClockS™ _{mance clock solutions from ICS.The 2:1 Multiplexer}
allows one of 2 inputs to be selected onto one out-
put pin and the 1:2 MUX switches one input to one
of two outputs. This device may be useful for multiplexing multi-
rate Ethernet Phys which have 100Mbit and 1000Mbit transmit/
receive pairs onto an optical SFP module which has a single
trasmit/receive pair. Please refer to the Application Block dia-
gram on page 2 of the data sheet.
The ICS85354 is optimized for applications requiring very high
performance and has a maximum operating frequency in excess
of 2GHz. The device is packaged in a small, 3mm x 3mm VFQFN
package, making it ideal for use on space-constrained boards.
FEATURES
• Dual 2:1/1:2 MUX
• 3 LVPECL outputs
• 3 differential clock inputs
• CLKx pair can accept the following differential input levels:
LVPECL, LVDS, CML
• Maximum output frequency: 3GHz
• Part-to-part skew: 85ps (typical)
• Additive jitter, RMS: 0.03ps (typical)
• Propagation delay: 330ps (typical)
• 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
BLOCK DIAGRAM
CLK_SELA
CLKA0
nCLKA0
CLKA1
nCLKA1
CLKB
nCLKB
CLK_SELB
PIN ASSIGNMENT
0
QA
nQA
1
QB0
nQB0
QB1
nQB1
16 15 14 13
QB0 1
12 CLKA0
nQB0 2
11 nCLKA0
QB1 3
10 CLKA1
nQB1 4
9 nCLKA1
5678
ICS85354
16-Lead VFQFN
3mm x 3mm x 0.95 package body
K Package
Top View
The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial
product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.
85354AK
www.icst.com/products/hiperclocks.html
REV. B JUNE 8, 2004
1