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| Integrated Circuit Systems, Inc. ICS9112-27 Preliminary Product Preview Low Skew PCI / PCI-X Buffer General Description The ICS9112-27 is a high performance, low skew, low jitter PCI / PCI-X clock driver. It is designed to distribute high speed signals in PCI / PCI-X applications operating at speeds from 0 to 140 MHz. The ICS9112-27 is characterized for operation from -40C to 85C for automotive and industrial applications. Features * * * * * * Frequency range 0 - 140 MHz (3.3V) Less than 200 ps Jitter between outputs Skew controlled outputs < 100 ps Distribute one clock input to one bank of four outputs 3.3V 10% operation Available in 8 pin TSSOP, and SOIC packages. Block Diagram OE LOGIC CONTROL Pin Configuration CLK_IN 1 2 3 4 ICS9112-27 8 7 6 5 CLK3 CLK2 VDD CLK1 CLK0 OE CLK0 CLK1 CLK_IN CLK2 GND 8 pin TSSOP & SOIC Functionality Table CLK3 INPUTS CLK_IN 0 0 1 OE 0 1 0 1 OUTPUTS CLK(3:0) 0 0 0 1 Pin Descriptions PIN NUMBER 1 2 3 4 5 6 7 8 PIN NAME CLK_IN OE CLK0 GND CLK1 VDD CLK2 CLK3 TYPE IN IN OUT PWR OUT PWR OUT OUT Input reference frequency. 1 DESCRIPTION Output enable (has internal pull_up.) when OE is low, it tristates the clock outputs Buffered clock output Ground Buffered clock output Power supply for 3.3V Buffered clock output Buffered clock output 9112-27 Rev B 02/27/01 PRODUCT PREVIEW documents contain information on new products in the sampling or preproduction phase of development. Characteristic data and other specifications are subject to change without notice. ICS9112-27 Preliminary Product Preview Absolute Maximum Ratings Supply voltage range VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 4.3 V Input voltage rangeVI (see notes 1 & 2) . . . . . . . . . . . . -0.5V to VDD + 0.5V Output voltage range V O (see notes 1 & 2) . . . . . . . . . -0.5V to VDD + 0.5V Input clamp current IIK (VI< 0 or VI >VDD) . . . . . . . . . . . . . . . . . . . 50 mA Output clamp current IOK (VO< 0 or VO) . . . . . . . . . . . . . . . . . . . . . . 50 mA Continuous total output current, IO (VO = 0 to VDD) . . . . . . . . . . . 50 mA Package thermal impedance OJA (see note 3): PW package . . . 230.5C/W Storage temperature rante, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65C to 150C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stress specifications only and functional operation of the device at these or any other conditions above those listed in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability. Notes: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. This value is limited to 4.6 V maximum. 3. The package thermal impedance is calculated in accordance with JESD 51. Terminal Functions Terminal CLK (3-0) CLKIN GND OE VDD 3.3V No 8, 7, 5, 3 1 4 2 6 I/O O I PWR I PWR Buffered output clocks Input reference frequency Ground Outputs enable control 3.3V supply Description Recommended Operating Conditions Min Supply voltage, VDD High-level input voltage, VIH Low-level input voltage, VIL Input voltage, VI High-level output current, IOH Low-level output current, IOL Operating free-air temperature, TA -40 0 3 0.7XVDD 0.3XVDD VDD -24 24 85 Nom 3.3 Max 3.6 Unit V V V V mA mA C Timing requirements over recommended ranges of supply voltage and operating free-air temperature Min Clock frequency fCLK 0 Nom Max 140 Unit MHz 2 ICS9112-27 Preliminary Product Preview Electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) Parameter Input voltage VIK Test Conditions VDD = 3.3V, II = 18 mA VDD = min to max, IOH = -1 mA High-level output voltage VOH VDD = 3 V IOH = 24 mA VDD = 3 V IOH = 12 mA VDD = min to max, IOL = -1 mA Low-level output voltage VOL VDD = 3 V IOL = 24 mA VDD = 3 V IOL= 12 mA High-level output current IOH VDD = 3 V VO = 1 V VDD = 3.3 V VO = 1.65 V VDD = 3 V VO = 2 V VDD = 3.3 V VO = 1.65 V VI = VO or VDD f = 67 MHz VDD = 3.3V VI = 0 V or VDD VDD = 3.3V VI = 0 V or VDD 3 3.2 60 70 5 37 -50 -55 VDD -0.2 2 2.4 0.2 0.8 0.55 Min Nom Max -1.2 Unit V V V V V V V mA mA mA mA A mA pF pF Low-level output current IOL Input current II Dynamic Current, see figure 5 IDD Input capacitance Ci Output capacitance Co Switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 25 pF, VDD = 3.3 V (see note 6 and figures 1 and 2) Parameter Test Conditions Min Nom Max Unit High-to-low propagation delay tPLH Low-to-high propagation delay tPHL Output skew (see note 4) TSK (O) Pulse skew tSK (P) Process skew TSK (PR) CLK high time, see figure 4 Thigh See figures 1 and 2 1.8 1.8 2.5 2.4 3 3 100 ns ns ps ps ns VIH = VDD, VIL = 0 V 150 66 MHz 140 MHz 66 MHz 140 MHz 0.2VDD to 0.6VDD 0.6VDD to 0.2VDD 6 3 6 3 1.5 1.5 2.7 2.7 4 4 ns CLK low time, see figure 4 Tlow Output rise slew rate Tr Output fall slew rate Tf ns V/ns V/ns 3 ICS9112-27 Preliminary Product Preview Parameter Measurement Information VDD 140W CLKn 10 pF 140W Figure 1. Test Load Circuit VDD 50% VDD CLKIN tPLH TPHL VOH 0V 0.6 VDD 50% VDD CLK0-CLK3 0.2 VDD tR 0.6 VDD 50% VDD 0.2 VDD tf VOL Figure 2. Voltage Thresholds for Propagation Delay (tpd) Measurements 50% VDD Any CLK 50% VDD Any CLK Tsk(0) Figure 3. Output Skew Paramameter VIH(Min) VIL(Max) Vtest Value 0.5 VDD 0.35 VDD 0.4 VDD Unit V V V VIH(Min) Vtest VIL(Max) thigh 0.6 VDD tcyc tlow 0.2 VDD Figure 4. Clock Waveform 0.4 VDD Peak to Peak (Minimum) Note: All parameters in Figure 4 are according to PCI-X 1.0 specifications. 4 ICS9112-27 Preliminary Product Preview Parameter Measurement Information Supply Current vs Frequency 60 VDD = 3.6 V TA = 85C 50 ICC - Supply Current - mA 40 20 0 20 40 60 80 100 120 140 160 F - Frequency - Mhz Figure 5 High Level Output Voltage vs High-Level Output Current 3.5 VOH - High-Level Output Voltage - V 3.0 2.5 2.0 1.5 1.0 0.5 0 -100 VDD = 3.3 V TA = 25C -90 -80 -70 -60 -50 -40 -30 IOH-High-Level Output Current-mA Figure 6 -20 -10 0 5 ICS9112-27 Preliminary Product Preview Parameter Measurement Information Low Level Output Voltage vs Low-Level Output Current 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 -20 0 20 40 60 80 100 120 IOL-Low-Level Output Current-mA Figure 7 VDD = 3.3 V TA = 25C 6 ICS9112-27 Preliminary Product Preview SYMBOL In Millimeters In Inches COMMON DIMENSIONS COMMON DIMENSIONS MIN MAX MIN MAX 0.05 0.80 0.19 1.20 0.15 1.05 0.30 .002 .032 .007 .047 .006 .041 .012 A A1 A2 b c D E E1 e L N aaa VARIATIONS N 0.09 0.20 SEE VARIATIONS 6.40 BASIC 4.30 4.50 0.65 BASIC 0.45 0.75 SEE VARIATIONS 0 8 0.10 .0035 .008 SEE VARIATIONS 0.252 BASIC .169 .177 0.0256 BASIC .018 .030 SEE VARIATIONS 0 8 .004 D mm. MIN 2.90 MAX 3.10 MIN .114 D (inch) MAX .122 7/6/00 Rev B 4.40 mm. Body, 0.65 mm. pitch TSSOP (0.0256 mil) (173 mil) 8 MO-153 JEDEC Doc.# 10-0038 Ordering Information ICS9112yG-27-T Example: ICS XXXX y G - PPP - T Designation for tape and reel packaging Pattern Number (2 or 3 digit number for parts with ROM code patterns) Package Type G=TSSOP Revision Designator (will not correlate with datasheet revision) Device Type (consists of 3 or 4 digit numbers) Prefix ICS, AV = Standard Device PRODUCT PREVIEW documents contain information on new products in the sampling or preproduction phase of development. Characteristic data and other specifications are subject to change without notice. 7 ICS9112-27 Preliminary Product Preview SYMBOL In Millimeters In Inches COMMON DIMENSIONS COMMON DIMENSIONS MIN MAX MIN MAX 1.35 0.10 0.33 1.75 0.25 0.51 .0532 .0040 .013 .0688 .0098 .020 A A1 B C D E e H h L N VARIATIONS N 8 0.19 0.25 SEE VARIATIONS 3.80 4.00 1.27 BASIC 5.80 0.25 6.20 0.50 .0075 .0098 SEE VARIATIONS .1497 .1574 0.050 BASIC .2284 .010 .2440 .020 0.40 1.27 SEE VARIATIONS 0 8 .016 .050 SEE VARIATIONS 0 8 D mm. MIN 4.80 MAX 5.00 MIN .1890 D (inch) MAX .1968 10-0030 Rev A - MS-012 150 mil (Narrow Body) SOIC Ordering Information ICS9112YM-27-T Example: ICS XXXX y M - PPP - T Designation for tape and reel packaging Pattern Number (2 or 3 digit number for parts with ROM code patterns) Package Type M=SOIC Revision Designator (will not correlate with datasheet revision) Device Type (consists of 3 or 4 digit numbers) Prefix ICS, AV = Standard Device 8 PRODUCT PREVIEW documents contain information on new products in the sampling or preproduction phase of development. Characteristic data and other specifications are subject to change without notice. |
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