CDCVF2310 www.ti.com SCAS666C – JUNE 2001 – REVISED JANUARY 2008 2.5-V TO 3.3-V HIGH-PERFORMANCE CLOCK BUFFER FEATURES 1 • • • • • • • • • High-Performance 1:10 Clock Driver Operates up to 200 MHz at VDD 3.3 V Pin-to-Pin Skew < 100 ps at VDD 3.3 V VDD Range: 2.3 V to 3.6 V Operating Temperature Range –40°C to 85°C Output Enable Glitch Suppression Distributes One Clock Input to Two Banks of Five Outputs 25-Ω On-Chip Series Damping Resistors Packaged in 24-Pin TSSOP APPLICATIONS • PW PACKAGE (TOP VIEW) GND VDD 1Y0 1Y1 1Y2 GND GND 1Y3 1Y4 VDD 1G 2Y4 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 CLK VDD VDD 2Y0 2Y1 GND GND 2Y2 2Y3 VDD VDD 2G General-Purpose Applications DESCRIPTION The CDCVF2310 is a high-performance, low-skew clock buffer that operates up to 200 MHz. Two banks of five outputs each provide low-skew copies of CLK. After power up, the default state of the outputs is low regardless of the state of the control pins. For normal operation, the outputs of bank 1Y[0:4] or 2Y[0:4] can be placed in a low state when the control pins (1G or 2G, respectively) are held low and a negative clock edge is detected on the CLK input. The outputs of bank 1Y[0:4] or 2Y[0:4] can be switched into the buffer mode when the control pins (1G and 2G) are held high and a negative clock edge is detected on the CLK input. The device operates in a 2.5-V and 3.3-V environment. The built-in output enable glitch suppression ensures a synchronized output enable sequence to distribute full period clock signals. The CDCVF2310 is characterized for operation from –40°C to 85°C. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2001–2008, Texas Instruments Incorporated CDCVF2310 www.ti.com SCAS666C – JUNE 2001 – REVISED JANUARY 2008 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. FUNCTIONAL BLOCK DIAGRAM 3 25 Ω 4 25 Ω 5 25 Ω 8 25 Ω 9 25 Ω 1G 2G 11 Logic Control 13 Logic Control 21 CLK 24 25 Ω 20 25 Ω 17 25 Ω 16 25 Ω 12 25 Ω 2 Submit Documentation Feedback 1Y0 1Y1 1Y2 1Y3 1Y4 2Y0 2Y1 2Y2 2Y3 2Y4 Copyright © 2001–2008, Texas Instruments Incorporated Product Folder Link(s): CDCVF2310 CDCVF2310 www.ti.com SCAS666C – JUNE 2001 – REVISED JANUARY 2008 FUNCTION TABLE INPUT (1) OUTPUT 1G 2G CLK 1Y[0:4] 2Y[0:4] L L ↓ L L (1) H L ↓ CLK L H ↓ L CLK (1) H H ↓ CLK (1) CLK (1) L After detecting one negative edge on the CLK input, the output follows the input CLK if the control pin is held high. Terminal Functions TERMINAL NAME NO. I/O DESCRIPTION 1G 11 I Output enable control for 1Y[0:4] outputs. This output enable is active-high, meaning the 1Y[0:4] clock outputs follow the input clock (CLK) if this pin is logic high. 2G 13 I Output enable control for 2Y[0:4] outputs. This output enable is active-high, meaning the 2Y[0:4] clock outputs follow the input clock (CLK) if this pin is logic high. 1Y[0:4] 3, 4, 5, 8, 9 O Buffered output clocks 2Y[0:4] 21, 20, 17, 16, 12 O Buffered output clocks CLK 24 I Input reference frequency GND 1, 6, 7, 18, 19 VDD 2, 10, 14, 15, 22, 23 Ground DC power supply, 2.3 V – 3.6 V Submit Documentation Feedback Copyright © 2001–2008, Texas Instruments Incorporated Product Folder Link(s): CDCVF2310 3 CDCVF2310 www.ti.com SCAS666C – JUNE 2001 – REVISED JANUARY 2008 DETAILED DESCRIPTION Output Enable Glitch Suppression Circuit The purpose of the glitch suppression circuitry is to ensure the output enable sequence is synchronized with the clock input such that the output buffer is enabled or disabled on the next full period of the input clock (negative edge triggered by the input clock) (see Figure 1). The G input must fulfill the timing requirements (tsu, th) according to the Switching Characteristics table for predictable operation. CLK Gn Yn tsu(en) th(en) a) Enable Mode CLK Gn Yn tsu(dis) th(dis) b) Disable Mode Figure 1. Enable and Disable Mode Relative to CLK↓ 4 Submit Documentation Feedback Copyright © 2001–2008, Texas Instruments Incorporated Product Folder Link(s): CDCVF2310 CDCVF2310 www.ti.com SCAS666C – JUNE 2001 – REVISED JANUARY 2008 ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) Supply voltage range, VDD Input voltage range, VI –0.5 V to 4.6 V (2) (3) Output voltage range, VO –0.5 V to VDD + 0.5 V (2) (3) –0.5 V to VDD + 0.5 V Input clamp current, IIK (VI < 0 or VI> VDD) ±50 mA Output clamp current, IOK (VO < 0 or VO > VDD) ±50 mA Continuous total output current, IO (VO = 0 to VDD) ±50 mA Package thermal impedance, θJA (4) : PW package 120°C/W Storage temperature range Tstg (1) (2) (3) (4) –65°C to 150°C Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. The input and output negative voltage ratings may be exceeded if the input and output clamp-current ratings are observed. This value is limited to 4.6 V maximum. The package thermal impedance is calculated in accordance with JESD 51. RECOMMENDED OPERATING CONDITIONS (1) Supply voltage, VDD Low-level input voltage, VIL High-level input voltage, VIH Low-level output current, IOL 2.5 MAX 3.6 VDD = 3 V to 3.6 V 0.8 VDD = 2.3 V to 2.7 V 0.7 VDD = 3 V to 3.6 V 2 VDD = 2.3 V to 2.7 V UNIT V V V 1.7 0 VDD VDD = 3 V to 3.6 V 12 VDD = 2.3 V to 2.7 V 6 VDD = 3 V to 3.6 V 12 VDD = 2.3 V to 2.7 V 6 Operating free-air temperature, TA (1) NOM 2.3 3.3 Input voltage, VI High-level output current, IOH MIN –40 85 V mA mA °C Unused inputs must be held high or low to prevent them from floating. ELECTRICAL CHARACTERISTICS over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP (1) UNIT Input voltage VDD = 3 V, II Input current VI = 0 V or VDD IDD (2) Static device current CLK = 0 V or VDD, IO = 0 mA CI Input capacitance VDD = 2.3 V to 3.6 V, VI = 0 V or VDD 2.5 pF CO Output capacitance VDD = 2.3 V to 3.6 V, VI = 0 V or VDD 2.8 pF (1) (2) II = –18 mA MAX VIK –1.2 V ±5 µA 80 µA All typical values are at respective nominal VDD. For ICC over frequency, see Figure 6. VDD = 3.3 V ±0.3 V PARAMETER TEST CONDITIONS VDD = min to max, VOH (1) High-level output voltage VDD = 3 V MIN IOH = –100 µA VDD – 0.2 IOH = –12 mA 2.1 IOH = –6 mA 2.4 TYP (1) MAX UNIT V All typical values are at respective nominal VDD. Submit Documentation Feedback Copyright © 2001–2008, Texas Instruments Incorporated Product Folder Link(s): CDCVF2310 5 CDCVF2310 www.ti.com SCAS666C – JUNE 2001 – REVISED JANUARY 2008 VDD = 3.3 V ±0.3 V (continued) PARAMETER TEST CONDITIONS VDD = min to max, VOL IOH IOL Low-level output voltage High-level output current Low-level output current VDD = 3 V MIN TYP (1) IOL = –100 µA MAX IOL = 12 mA 0.8 IOL = 6 mA 0.55 VDD = 3 V, VO = 1 V VDD = 3.3 V, VO = 1.65 V VDD = 3.6 V, VO = 3.135 V VDD = 3 V, VO = 1.95 V VDD = 3.3 V, VO = 1.65 V VDD = 3.6 V, VO = 0.4 V UNIT 0.2 V –28 –36 mA –14 28 36 mA 14 VDD = 2.5 V ±0.2 V PARAMETER TEST CONDITIONS VOH High-level output voltage VOL Low-level output voltage IOH IOL (1) High-level output current Low-level output current VDD = min to max, IOH = –100 µA VDD = 2.3 V IOH = –6 mA VDD = min to max, IOL = 100 µA VDD = 2.3 V IOL = 6 mA VDD = 2.3 V, VO = 1 V VDD = 2.5 V, VO = 1.25 V VDD = 2.7 V, VO = 2.375 V VDD = 2.3 V, VO = 1.2 V VDD = 2.5 V, VO = 1.25 V VDD = 2.7 V, VO = 0.3 V MIN TYP (1) MAX VDD – 0.2 UNIT V 1.8 0.2 0.55 V –17 –25 mA –10 17 25 mA 10 All typical values are at respective nominal VDD. TIMING REQUIREMENTS over recommended ranges of supply voltage and operating free-air temperature MIN NOM fclk Clock frequency MAX VDD = 3 V to 3.6 V 0 200 VDD = 2.3 V to 2.7 V 0 170 UNIT MHz JITTER CHARACTERISTICS Characterized using CDCVF2310 Performance EVM when VDD=3.3 V. Outputs not under test are terminated to 50 Ω. PARAMETER tjitter 6 TEST CONDITIONS Additive phase jitter from input to output 1Y0 MIN TYP 12 kHz to 5 MHz, fout = 30.72 MHz 52 12 kHz to 20 MHz, fout = 125 MHz 45 Submit Documentation Feedback MAX UNIT fs rms Copyright © 2001–2008, Texas Instruments Incorporated Product Folder Link(s): CDCVF2310 CDCVF2310 www.ti.com SCAS666C – JUNE 2001 – REVISED JANUARY 2008 SWITCHING CHARACTERISTICS over recommended operating free-air temperature range (unless otherwise noted) VDD = 3.3 V ±0.3 V (see Figure 2) PARAMETER tPLH TEST CONDITIONS f = 0 MHz to 200 MHz For circuit load, see Figure 2. CLK to Yn tPHL MIN (1) TYP 1.3 UNIT 2.8 ns tsk(o) Output skew (Ym to Yn) 100 ps tsk(p) Pulse skew (see Figure 5) 250 ps tsk(pp) Part-to-part skew 500 ps tr Rise time (see Figure 3) VO = 0.4 V to 2 V 0.7 2 V/ns tf Fall time (see Figure 3) VO = 2 V to 0.4 V 0.7 2 V/ns tsu(en) Enable setup time, G_high before CLK ↓ 0.1 ns tsu(dis) Disable setup time, G_low before CLK ↓ 0.1 ns th(en) Enable hold time, G_high after CLK ↓ 0.4 ns th(dis) Disable hold time, G_low after CLK ↓ 0.4 ns (1) (see Figure 4) MAX The tsk(o) specification is only valid for equal loading of all outputs. VDD = 2.5 V ±0.2 V (see Figure 2) PARAMETER tPLH TEST CONDITIONS f = 0 MHz to 170 MHz For circuit load, see Figure 2. CLK to Yn tPHL MIN (1) 1.5 MAX UNIT 3.5 ns tsk(o) Output skew (Ym to Yn) 170 ps tsk(p) Pulse skew (see Figure 5) 400 ps tsk(pp) Part-to-part skew 600 ps tr Rise time (see Figure 3) VO = 0.4 V to 1.7 V 0.5 1.4 V/ns tf Fall time (see Figure 3) VO = 1.7 V to 0.4 V 0.5 1.4 V/ns tsu(en) Enable setup time, G_high before CLK ↓ 0.1 ns tsu(dis) Disable setup time, G_low before CLK ↓ 0.1 ns th(en) Enable hold time, G_high after CLK ↓ 0.4 ns th(dis) Disable hold time, G_low after CLK ↓ 0.4 ns (1) (see Figure 4 ) TYP The tsk(o) specification is only valid for equal loading of all outputs. PARAMETER MEASUREMENT INFORMATION From Output Under Test CL = 25 pF on Yn 500 Ω A. CL includes probe and jig capacitance. B. All input pulses are supplied by generators having the following characteristics: PRR ≤ 200 MHz, ZO = 50 Ω, tr < 1.2 ns, tf < 1.2 ns. Figure 2. Test Load Circuit Submit Documentation Feedback Copyright © 2001–2008, Texas Instruments Incorporated Product Folder Link(s): CDCVF2310 7 CDCVF2310 www.ti.com SCAS666C – JUNE 2001 – REVISED JANUARY 2008 PARAMETER MEASUREMENT INFORMATION (continued) VDD 50% VDD 0V CLK tPLH tPHL 1.7 V or 2 V Yn 0.4 V 0.4 V tr VOH 50% VDD VOL tf Figure 3. Voltage Waveforms Propagation Delay Times VDD CLK 0V VOH 50% VDD Any Y VOL VOH 50% VDD Any Y VOL tsk(o) tsk(o) Figure 4. Output Skew VDD 50% VDD CLK 0V tPLH tPHL VOH Yn 50% VDD VOL NOTE: tsk(p) = | tPLH − tPHL | Figure 5. Pulse Skew 8 Submit Documentation Feedback Copyright © 2001–2008, Texas Instruments Incorporated Product Folder Link(s): CDCVF2310 CDCVF2310 www.ti.com SCAS666C – JUNE 2001 – REVISED JANUARY 2008 PARAMETER MEASUREMENT INFORMATION (continued) SUPPLY CURRENT vs FREQUENCY 220 VDD = 2.3 V to 3.6 V CL(Yn) = 25 pF || 500 Ω All Outputs Switching TA = –40°C to 85°C 200 ICC – Supply Current – mA 180 VDD = 3.6 V TA = –40°C VDD = 3.6 V TA = 85°C 160 140 120 100 80 VDD = 2.3 V TA = 85°C 60 VDD = 2.3 V TA = –40°C 40 20 0 0 20 40 60 80 100 120 140 160 180 200 f – Frequency – MHz Figure 6. Submit Documentation Feedback Copyright © 2001–2008, Texas Instruments Incorporated Product Folder Link(s): CDCVF2310 9 PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan Lead/Ball Finish (2) MSL Peak Temp Op Temp (°C) Top-Side Markings (3) (4) CDCVF2310PW ACTIVE TSSOP PW 24 60 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 CKV2310 CDCVF2310PWG4 ACTIVE TSSOP PW 24 60 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 CKV2310 CDCVF2310PWR ACTIVE TSSOP PW 24 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 CKV2310 CDCVF2310PWRG4 ACTIVE TSSOP PW 24 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM -40 to 85 CKV2310 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Top-Side Marking for that device. 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Addendum-Page 1 Samples PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 OTHER QUALIFIED VERSIONS OF CDCVF2310 : • Enhanced Product: CDCVF2310-EP NOTE: Qualified Version Definitions: • Enhanced Product - Supports Defense, Aerospace and Medical Applications Addendum-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device CDCVF2310PWR Package Package Pins Type Drawing TSSOP PW 24 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2000 330.0 16.4 Pack Materials-Page 1 6.95 B0 (mm) K0 (mm) P1 (mm) 8.3 1.6 8.0 W Pin1 (mm) Quadrant 16.0 Q1 PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) CDCVF2310PWR TSSOP PW 24 2000 367.0 367.0 38.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. 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