40A75

ICS840-75 ICST | Alldatasheet

Document overview

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Technical content

www.icst.com/products/hiperclocks.html REV A. NOVEMBER 7, 2005 Integrated Circuit Systems, Inc. ICS840-75 75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT PRELIMINARY GENERAL DESCRIPTION The ICS840-75 is a SAS/SATA Oscillator Replacement and a member of the HiPerClocksTM family of high performance devices from ICS. The ICS840-75 uses a 25MHz crystal to synthesize 75MHz. The ICS840-75 has excellent jitter performance. The ICS840-75 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.

FEATURES

• One LVCMOS/LVTTL output, 15Ω output impedence
• Crystal oscillator interface designed for 25MHz, 18pF parallel resonant crystal
• Output frequency: 75MHz
• Random jitter: 3ps (typical)
• Deterministic jitter: 0.14ps (typical)
• 3.3V operating supply
• 0°C to 70°C ambient operating temperature
• Available in both standard and lead-free RoHS-compliant packages HiPerClockS™ ICS ICS840-75 8-Lead TSSOP 4.40mm x 3.0mm x 0.925mm package body G Package Top View ICS840-75 8-Lead SOIC 3.90mm x 4.92mm x 1.37mm body package M Package Top View BLOCK DIAGRAM PIN ASSIGNMENT Clock Synthesizer XTAL_IN XTAL_OUT OE Q Pullup 25MHz 75MHz VDD XTAL_OUT XTAL_IN OE nc Q VDDO GND 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.

TABLE 2. PIN CHARACTERISTICS TABLE 1. PIN DESCRIPTIONS TABLE 3. CONTROL FUNCTION TABLE

TABLE 5. CRYSTAL CHARACTERISTICS

8 Lead TSSOP

8 Lead SOIC

TABLE 6. AC CHARACTERISTICS, VDD = VDDO = 3.3V±0.3V,, TA = 0°C TO 70°C

www.icst.com/products/hiperclocks.html REV A. NOVEMBER 7, 2005 Integrated Circuit Systems, Inc. ICS840-75 75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT PRELIMINARY PARAMETER MEASUREMENT INFORMATION OUTPUT RISE/FALL TIME 3.3V OUTPUT LOAD AC TEST CIRCUIT SCOPE Qx LVCMOS 1.65V ± 0.15V -1.65V ± 0.15V Clock Outputs 20% 80% 80% 20% tR tF Q GND VDD, VDDO OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD tPERIOD tPW tPERIOD odc = VDDO x 100% tPW

www.icst.com/products/hiperclocks.html REV A. NOVEMBER 7, 2005 Integrated Circuit Systems, Inc. ICS840-75 75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT PRELIMINARY RELIABILITY INFORMATION TRANSISTOR COUNT The transistor count for ICS840-75 is: 2423 TABLE 7A. θJAVS. AIR FLOW TABLE FOR 8 LEAD TSSOP θθθθθJA by Velocity (Meters per Second) 2.5 Multi-Layer PCB, JEDEC Standard Test Boards 101.7°C/W 90.5°C/W 89.8°C/W TABLE 7B. θJAVS. AIR FLOW TABLE 8 LEAD SOIC θθθθθJA by Velocity (Linear Feet per Minute) 200 500 Single-Layer PCB, JEDEC Standard Test Boards 153.3°C/W 128.5°C/W 115.5°C/W Multi-Layer PCB, JEDEC Standard Test Boards 112.7°C/W 103.3°C/W 97.1°C/W NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.

www.icst.com/products/hiperclocks.html REV A. NOVEMBER 7, 2005 Integrated Circuit Systems, Inc. ICS840-75 75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT PRELIMINARY PACKAGE OUTLINE - G SUFFIX FOR 8 LEAD TSSOP TABLE 8A. PACKAGE DIMENSIONS Reference Document: JEDEC Publication 95, MO-153 L O B M Y S s r e t e m illi M m u m i n i M m u m i x a M N A A A b c D E C I S A B E e C I S A B L α a a a PACKAGE OUTLINE - M SUFFIX FOR 8 LEAD SOIC TABLE 8B. PACKAGE DIMENSIONS Reference Document: JEDEC Publication 95, MS-012 L O B M Y S s r e t e m illi M M U M I N I M M U M I X A M N A A B C D E e C I S A B H h L α

TABLE 9. ORDERING INFORMATION product for use in life support devices or critical medical instruments. The aforementioned trademark, HiPerClockS is a trademark of Integrated Circuit Systems, Inc. or its subsidiaries in the United States and/or other countries.