SGLS248A - JUNE 2004 - REVISED AUGUST 2004 D Controlled Baseline D D D D D D D D D D Outputs Have Internal Series Damping - One Assembly/Test Site, One Fabrication Site Extended Temperature Performance of -55C to 125C Enhanced Diminishing Manufacturing Sources (DMS) Support Enhanced Product-Change Notification Qualification Pedigree Low Output Skew, Low Pulse Skew for Clock-Distribution and Clock-Generation Applications Operates at 3.3-V VCC LVTTL-Compatible Inputs and Outputs Supports Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC) Distributes One Clock Input to 10 Outputs D D D Resistor to Reduce Transmission Line Effects Distributed VCC and Ground Pins Reduce Switching Noise State-of-the-Art EPIC-B BiCMOS Design Significantly Reduces Power Dissipation Shrink Small-Outline (DB) Package DB PACKAGE (TOP VIEW) GND Y10 VCC Y9 OE A P0 P1 Y8 VCC Y7 GND Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits. 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 GND Y1 VCC Y2 GND Y3 Y4 GND Y5 VCC Y6 GND description The CDC2351 is a high-performance clock-driver circuit that distributes one input (A) to 10 outputs (Y) with minimum skew for clock distribution. The output-enable (OE) input disables the outputs to a high-impedance state. Each output has an internal series damping resistor to improve signal integrity at the load. The CDC2351 operates at nominal 3.3-V VCC. The propagation delays are adjusted at the factory using the P0 and P1 pins. The factory adjustments ensure that the part-to-part skew is minimized and is kept within a specified window. Pins P0 and P1 are not intended for customer use and should be connected to GND. The CDC2351M is characterized for operation over the full military temperature range of -55C to 125C. ORDERING INFORMATION TA PACKAGE ORDERABLE PART NUMBER TOP-SIDE MARKING -55C to 125C SSOP - DB Tape and Reel CDC2351MDBREP CK2351MEP Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. 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. EPIC- is a trademark of Texas Instruments. Copyright 2004, Texas Instruments Incorporated ! "#$ ! %#&'" ($) (#"! " !%$""! %$ *$ $! $+! !#$! !(( ,-) (#" %"$!!. ($! $"$!!'- "'#($ $!. '' %$$!) POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 SGLS248A - JUNE 2004 - REVISED AUGUST 2004 FUNCTION TABLE INPUTS A OE OUTPUTS In L H Z H H Z L L L H L H logic diagram (positive logic) OE 5 23 21 19 18 Y1 Y2 Y3 Y4 6 A 16 7 8 P0 P1 14 11 9 4 2 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 Y5 Y6 Y7 Y8 Y9 Y10 SGLS248A - JUNE 2004 - REVISED AUGUST 2004 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to 4.6 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to 7 V Voltage range applied to any output in the high state or power-off state, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to 3.6 V Current into any output in the low state, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 mA Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -18 mA Output clamp current, IOK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -50 mA Maximum power dissipation at TA = 55C (in still air) (see Note 2): DB package . . . . . . . . . . . . . . . . . . 0.65 W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65C to 150C 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. NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. The maximum package power dissipation is calculated using a junction temperature of 150C and a board trace length of 750 mils. For more information, see the Package Thermal Considerations application note in the 1994 ABT Advanced BiCMOS Technology Data Book, literature number SCBD002. recommended operating conditions (see Note 3) MIN MAX 3.6 VCC VIH Supply voltage 3 High-level input voltage 2 VIL VI Low-level input voltage IOH IOL High-level output current fclock TA Input clock frequency 0 Low-level output current Operating free-air temperature CDC2351M -55 V V 0.8 Input voltage UNIT V 5.5 V -12 mA 12 mA 100 MHz 125 C NOTE 3: Unused pins (input or I/O) must be held high or low. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VIK VOH VCC = 3 V, VCC = 3 V, II = -18 mA IOH = - 12 mA VOL II IO VCC = 3 V, VCC = 3.6 V, IOL = 12 mA VI = VCC or GND VCC = 3.6 V, VCC = 3.6 V, VO = 2.5 V VCC = 3 V or 0 IOZ MIN TYP Ci VCC = 3.6 V, VI = VCC or GND, IO = 0, VI = VCC or GND VCC = 3.3 V, V V -7 0.8 V 1 A -70 mA 10 A 0.3 Outputs low 15 Outputs disabled 0.3 f = 10 MHz Co VO = VCC or GND, VCC = 3.3 V, f = 10 MHz Not more than one output should be tested at a time and the duration of the test should not exceed one second. POST OFFICE BOX 655303 UNIT -1.2 2 Outputs high ICC MAX * DALLAS, TEXAS 75265 mA 4 pF 6 pF 3 SGLS248A - JUNE 2004 - REVISED AUGUST 2004 switching characteristics, CL = 50 pF (see Figure 1 and Figure 2) FROM (INPUT) TO (OUTPUT) tPLH tPHL A Y tPZH tPZL OE Y tPHZ tPLZ OE Y tsk(o) A tsk(p) tsk(pr) tr tf PARAMETER VCC = 3.3 V, TA = 25C VCC = 3 V to 3.6 V, TA = -55C to 125C MIN UNIT MIN TYP MAX MAX 3.8 4.3 4.8 1.1 11 3.6 4.1 4.6 1 9.7 2.4 4.9 6 1 12 2.4 4.3 6 1 11.1 2.2 4.4 6.3 1 11.1 2.2 4.6 6.3 1 11.5 Y 0.3 0.5 2.5 ns A Y 0.2 0.8 3 ns A Y A Y 2.5 ns A Y 2.5 ns 1 ns ns ns ns switching characteristics temperature and VCC coefficients over recommended operating free-air temperature and VCC range (see Note 4) PARAMETER FROM (INPUT) TO (OUTPUT) MIN MAX UNIT ps/10C tPLH(T) tPHL(T) Average temperature coefficient of low-to-high propagation delay A Y Average temperature coefficient of high-to-low propagation delay A Y 85 50 tPLH(VCC) Average VCC coefficient of low-to-high propagation delay A Y -145 ps/ 100 mV tPHL(VCC) Average VCC coefficient of high-to-low propagation delay A Y -100 ps/ 100 mV tPLH(T) and tPHL(T) are virtually independent of VCC. tPLH(VCC) and tPHL(VCC) are virtually independent of temperature. NOTE 4: This data was extracted from characterization material and has not been tested at the factory. 4 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 ps/10C SGLS248A - JUNE 2004 - REVISED AUGUST 2004 PARAMETER MEASUREMENT INFORMATION 6V S1 500 From Output Under Test TEST tPLH /tPHL tPLZ /tPZL tPHZ /tPZH Open GND CL = 50 pF (see Note A) S1 Open 6V GND 500 tw LOAD CIRCUIT 3V Input 3V Timing Input 1.5 V 1.5 V 0V 1.5 V 0V tsu VOLTAGE WAVEFORMS th 3V Data Input 1.5 V 1.5 V 0V VOLTAGE WAVEFORMS 1.5 V tPLH tPHL 2V 0.8 V tr 1.5 V 0V tPLZ 1.5 V 0V Output 1.5 V tPZL 3V Input 3V Output Control (low-level enabling) 1.5 V VOH 2V 0.8 V VOL tf 3V Output Waveform 1 S1 at 6 V (see Note B) Output Waveform 2 S1 at GND (see Note B) 1.5 V tPZH VOLTAGE WAVEFORMS VOL + 0.3 V VOL tPHZ VOH 1.5 V VOH - 0.3 V 0V VOLTAGE WAVEFORMS NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50 , tr 2.5 ns, tf 2.5 ns. D. The outputs are measured one at a time with one transition per measurement. Figure 1. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 SGLS248A - JUNE 2004 - REVISED AUGUST 2004 PARAMETER MEASUREMENT INFORMATION A Y1 tPHL1 tPLH1 tPHL2 tPLH2 tPHL3 tPLH3 tPHL4 tPLH4 tPHL5 tPLH5 tPHL6 tPLH6 tPHL7 tPLH7 tPHL8 tPLH8 tPHL9 tPLH9 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 Y10 tPHL10 tPLH10 NOTES: A. Output skew, tsk(o), is calculated as the greater of: - The difference between the fastest and slowest of tPLHn (n = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10) - The difference between the fastest and slowest of tPHLn (n = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10) B. Pulse skew, tsk(p), is calculated as the greater of | tPLHn - tPHLn | (n = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10). C. Process skew, tsk(pr), is calculated as the greater of: - The difference between the fastest and slowest of tPLHn (n = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10) across multiple devices under identical operating conditions. - The difference between the fastest and slowest of tPHLn (n = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10) across multiple devices under identical operating conditions. Figure 2. Waveforms for Calculation of tsk(o), tsk(p), tsk(pr) 6 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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