840AM-275LF

PRELIMINARY ICS840-275 75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT GENERAL DESCRIPTION FEATURES The ICS840-275 is a SAS/SATA Oscillator ICS Replacement and a member of the HiPerClocksTM HiPerClockS™ family of high performance devices from IDT. The ICS840-275 uses a 25MHz crystal to synthesize 75MHz. The ICS840-275 has excellent jitter performance. The ICS840-275 is packaged in a small 8-pin SOIC, making it ideal for use in systems with limited board space. • Two 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: 0.2ps (typical) • 3.3V operating supply • 0°C to 70°C ambient operating temperature • Available in both standard (RoHS 5) and lead-free (RoHS 6) packages BLOCK DIAGRAM OE PIN ASSIGNMENT Pullup VDD XTAL_OUT XTAL_IN OE 75MHz 25MHz 1 2 3 4 8 7 6 5 Q1 Q0 VDDO GND Q0 ICS840-275 XTAL_IN Clock Synthesizer 8-Lead SOIC 3.90mm x 4.92mm x 1.37mm body package M Package Top View XTAL_OUT Q1 The Preliminary Information presented herein represents a product in pre-production. The noted characteristics are based on initial product characterization and/or qualification. Integrated Device Technology, Incorporated (IDT) reserves the right to change any circuitry or specifications without notice. IDT ™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT 1 ICS840AM-275 REV A OCTOBER 3, 2006 ICS840-275 75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT PRELIMINARY TABLE 1. PIN DESCRIPTIONS Number Name 1 VDD XTAL_OUT, XTAL_IN Power 4 OE Input 5 GND Power 6 VDDO Power 2, 3 Type Description Input Pullup Power supply pin. Cr ystal oscillator interface. XTAL_IN is the input, XTAL_OUT is the output. Output enable pin. When HIGH, Qx outputs are enabled. When LOW, forces Qx outputs to HiZ state. LVCMOS/LVTTL interface levels. Power supply ground. Output supply pin. Single-ended clock outputs. LVCMOS/LVTTL interface levels. 7, 8 Q0, Q 1 Output 15Ω output impedence. NOTE: Pullup refers to internal input resistors. See Table 2, Pin Characteristics, for typical values. TABLE 2. PIN CHARACTERISTICS Symbol Parameter Test Conditions CIN Input Capacitance RPULLUP ROUT Minimum Typical Maximum Units 4 pF Input Pullup Resistor 51 kΩ Output Impedance 15 Ω TABLE 3. CONTROL FUNCTION TABLE Control Inputs Output OE Q0, Q1 0 Hi-Z 1 Active IDT ™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT 2 ICS840AM-275 REV A OCTOBER 3, 2006 ICS840-275 75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT PRELIMINARY ABSOLUTE MAXIMUM RATINGS Supply Voltage, VDD 4.6V NOTE: Stresses beyond those listed under Absolute Inputs, VI -0.5V to VDD + 0.5 V Outputs, VO -0.5V to VDDO + 0.5V Maximum Ratings may cause permanent damage to the device. These ratings are stress specifications only. Functional operation of product at these conditions or any conditions beyond those listed in the DC Characteristics or AC Characteristics is not Package Thermal Impedance, θJA 112.7°C/W (0 lfpm) Storage Temperature, TSTG implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability. -65°C to 150°C TABLE 4A. POWER SUPPLY DC CHARACTERISTICS, VDD = VDDO = 3.3V±0.3V, TA = -40°C TO 85°C Symbol Parameter VDD Power Supply Voltage VDDO Output Supply Voltage IDD Power Supply Current IDDO Output Supply Current Test Conditions Minimum Typical Maximum Units 3.0 3.3 3.6 V 3.0 3.3 3.6 V 80 mA 20 mA Maximum Units 2 VDD + 0.3 V -0.3 0.8 V 5 µA OE = VDD (output enabled) TABLE 4B. LVCMOS/LVTTL DC CHARACTERISTICS, VDD = VDDO = 3.3V±0.3V, TA = -40°C TO 85°C Symbol Parameter VIH Input High Voltage Test Conditions VIL Input Low Voltage IIH Input High Current VDD = VIN = 3.6V IIL Input Low Current VDD = 3.6V, VIN = 0V VOH Output High Voltage; NOTE 1 Minimum Typical -150 µA 2.6 V Output Low Voltage; NOTE 1 VOL NOTE 1: Outputs terminated with 50Ω to VDDO/2. See Parameter Measurement Information Section, "3.3V Output Load Test Circuit". 0.5 V Maximum Units TABLE 5. CRYSTAL CHARACTERISTICS Parameter Test Conditions Mode of Oscillation Minimum Typical Fundamental Frequency 25 MHz Equivalent Series Resistance (ESR) 40 Ω Shunt Capacitance 7 pF 300 µW Drive Level IDT ™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT 3 ICS840AM-275 REV A OCTOBER 3, 2006 ICS840-275 75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT PRELIMINARY TABLE 6. AC CHARACTERISTICS, VDD = VDDO = 3.3V±0.3V, TA = -40°C TO 85°C Symbol Parameter fOUT Output Frequency 75 MHz tDJ Deterministic Jitter; NOTE 1 0.2 ps tRJ Random Jitter; NOTE 1 RMS of Total Distribution (σ); NOTE 1 Peak-to-Peak Jitter; NOTE 1 3 ps 3 ps 28 ps tRMS tp-p tOSC Oscillation Star t Up Time t R / tF Output Rise/Fall Time Test Conditions Minimum Typical Time at minimum operating voltage to be 0 s 20% to 80% o dc Output Duty Cycle NOTE 1: Measured using Wavecrest SIA-3000. IDT ™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT 4 Maximum 10 Units ms 700 ps 50 % ICS840AM-275 REV A OCTOBER 3, 2006 ICS840-275 75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT PRELIMINARY PARAMETER MEASUREMENT INFORMATION 1.65V ± 0.15V V DDO SCOPE VDD, VDDO 2 Q0, Q1 t PW t Qx PERIOD LVCMOS GND odc = t PW x 100% t PERIOD -1.65V ± 0.15V 3.3V OUTPUT LOAD AC TEST CIRCUIT Clock Outputs OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD 80% 80% tR tF 20% 20% OUTPUT RISE/FALL TIME IDT ™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT 5 ICS840AM-275 REV A OCTOBER 3, 2006 ICS840-275 75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT PRELIMINARY APPLICATION INFORMATION RECOMMENDATIONS FOR UNUSED OUTPUT PINS OUTPUTS: LVCMOS OUTPUT: All unused LVCMOS output can be left floating. We recommend that there is no trace attached. CRYSTAL INPUT INTERFACE resonant crystal and were chosen to minimize the ppm error. The optimum C1 and C2 values can be slightly adjusted for different board layouts. The ICS840-275 has been characterized with 18pF parallel resonant crystals. The capacitor values, C1 and C2, shown in Figure 1 below were determined using a 25MHz, 18pF parallel XTAL_OUT C1 12p X1 18pF Parallel Cry stal XTAL_IN C2 12p FIGURE 1. CRYSTAL INPUt INTERFACE IDT ™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT 6 ICS840AM-275 REV A OCTOBER 3, 2006 ICS840-275 75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT PRELIMINARY RELIABILITY INFORMATION TABLE 7. θJAVS. AIR FLOW TABLE 8 LEAD SOIC θJA by Velocity (Linear Feet per Minute) Single-Layer PCB, JEDEC Standard Test Boards Multi-Layer PCB, JEDEC Standard Test Boards 0 200 500 153.3°C/W 112.7°C/W 128.5°C/W 103.3°C/W 115.5°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. TRANSISTOR COUNT The transistor count for ICS840-275 is: 2423 IDT ™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT 7 ICS840AM-275 REV A OCTOBER 3, 2006 ICS840-275 75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT PACKAGE OUTLINE - M SUFFIX FOR PRELIMINARY 8 LEAD SOIC TABLE 8. PACKAGE DIMENSIONS SYMBOL Millimeters MINIMUM N MAXIMUM 8 A 1.35 1.75 A1 0.10 0.25 B 0.33 0.51 C 0.19 0.25 D 4.80 5.00 E 3.80 4.00 e 1.27 BASIC H 5.80 6.20 h 0.25 0.50 L 0.40 1.27 α 0° 8° Reference Document: JEDEC Publication 95, MS-012 IDT ™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT 8 ICS840AM-275 REV A OCTOBER 3, 2006 ICS840-275 75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT PRELIMINARY TABLE 9. ORDERING INFORMATION Part/Order Number Marking Package Shipping Packaging Temperature ICS840AM-275 840AM275 8 lead SOIC tube 0°C to 70°C ICS840AM-275T 840AM275 8 lead SOIC 2500 tape & reel 0°C to 70°C ICS840AM-275LF TBD 8 lead "Lead-Free" SOIC tube 0°C to 70°C ICS840AM-275LFT TBD 8 lead "Lead-Free" SOIC 2500 tape & reel 0°C to 70°C NOTE: Par ts that are ordered with an "LF" suffix to the par t number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology, Incorporated (IDT) assumes no responsibility for either its use or for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring high reliability or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. IDT ™ / ICS™ LVCMOS OSCILLATOR REPLACEMENT 9 ICS840AM-275 REV A OCTOBER 3, 2006 ICS840-275 75MHZ, LVCMOS/LVTTL OSCILLATOR REPLACEMENT PRELIMINARY Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales For Tech Support 800-345-7015 408-284-8200 Fax: 408-284-2775 netcom@idt.com 480-763-2056 Corporate Headquarters Asia Pacific and Japan Europe Integrated Device Technology, Inc. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800 345 7015 +408 284 8200 (outside U.S.) Integrated Device Technology Singapore (1997) Pte. Ltd. Reg. No. 199707558G 435 Orchard Road #20-03 Wisma Atria Singapore 238877 +65 6 887 5505 IDT Europe, Limited 321 Kingston Road Leatherhead, Surrey KT22 7TU England +44 (0) 1372 363 339 Fax: +44 (0) 1372 378851 © 2006 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT, the IDT logo, ICS and HiPerClockS are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners. Printed in USA