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85356 Datasheet(PDF) 1 Page - Integrated Device Technology |
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85356 Datasheet(HTML) 1 Page - Integrated Device Technology |
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1 / 15 page  DATA SHEET 2:1, Differential-to-3.3V Dual LVPECL/ECL Clock Multiplexer 85356 85356 Rev C 1/5/15 1 ©2015 Integrated Device Technology, Inc. General Description The 85356 is a dual 2:1 Differential-to-LVPECL Multiplexer. The device has both common select and individual select inputs. When COM_SEL is logic High, the CLKxx input pairs will be passed to the output. When COM_SEL is logic Low, the output is determined by the setting of the SEL0 pin for channel 0 and the SEL1 pin for Channel 1. The differential input has a common mode range that can accept most differential input types such as LVPECL, LVDS, LVHSTL, SSTL, and HCSL. The 85356 can therefore be used as a differential translator to translate almost any differential input type to LVPECL. It can also be used in ECL mode by setting V CC = 0V and VEE to -3.0V to - 3.8V. The 85356 adds negligible jitter to the input clock and can operate at high frequencies in excess of 900MHz thus making it ideal for use in demanding applications such as SONET, Fibre Channel, 1 Gigabit/10 Gigabit Ethernet. Features • High speed differential muliplexer. The device can be configured as a 2:1 multiplexer • Dual 3.3V LVPECL outputs • Selectable differential CLKx/nCLKx input pairs • Differential CLKx/nCLKx pairs can accept the following interface levels: LVPECL, LVDS, LVHSTL, HCSL, SSTL • Output frequency: 900MHz (typical) • Translates any single-ended input signal to 3.3V LVPECL levels with resistor bias on nCLKx input • Output skew: 75ps (typical) • Propagation delay: 1.15ns (typical) • LVPECL mode operating voltage supply range: VCC = 3V to 3.8V, VEE = 0V • ECL mode operating voltage supply range: VCC = 0V, VEE = -3V to -3.8V • -40°C to 85°C ambient operating temperature • Available in lead-free (RoHS 6) package 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 CLK1B nc nCLK1A CLK1A nCLK0B CLK0B nc nCLK0A CLK0A nCLK1B VCC Q0 nQ0 SEL0 COM_SEL SEL1 VCC Q1 nQ1 VEE Pin Assignment 85356 20-Lead SOIC 7.5mm x 12.8mm x 2.3mm package body M Package Top View 85356 20-Lead TSSOP 6.5mm x 4.4mm x 0.92mm package body G Package Top View Block Diagram Q0 nQ0 COM_SEL SEL0 SEL1 CLK0A nCLK0A 0 1 Pulldown Pullup Pullup Pulldown CLK0B CLK0B Pulldown Pullup Q1 nQ1 CLK1A nCLK1A 0 1 Pulldown Pullup CLK1B CLK1B Pulldown Pullup Pullup |
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