IDT49FCT20805 2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE 2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER DESCRIPTION: FEATURES: * * * * * * * * * * * * IDT49FCT20805 The FCT20805 is a 2.5 volt clock driver built using advanced CMOS technology. The device consists of two banks of drivers, each with a 1:5 fanout and its own output enable control. The device has a "heartbeat" monitor for diagnostics and PLL driving. The MON output is identical to all other outputs and complies with the output specifications in this document. The FCT20805 offers low capacitance inputs. The FCT20805 is designed for high speed clock distribution where signal quality and skew are critical. The FCT20805 also allows single point-to-point transmission line driving in applications such as address distribution, where one signal must be distributed to multiple recievers with low skew and high signal quality. Advanced CMOS Technology Guaranteed low skew < 200ps (max.) Very low propagation delay < 2.5ns (max) Very low duty cycle distortion < 270ps (max) Very low CMOS power levels Operating frequency up to 166MHz TTL compatible inputs and outputs Two independent output banks with 3-state control 1:5 fanout per bank "Heartbeat" monitor output VCC = 2.5V 0.2V Available in SSOP, QSOP, and VFQFPN packages FUNCTIONAL BLOCK DIAGRAM OEA 5 INA 5 INB OA1 - OA5 OB1 - OB5 OEB MON The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE MAY 2010 1 c 2007 Integrated Device Technology, Inc. DSC-6172/113 IDT49FCT20805 2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE OB1 OB2 VCCB VCCA OA1 PIN CONFIGURATIONS 18 17 16 20 VCCB OA1 2 19 OB1 OA2 3 18 OB2 OA2 1 15 OB3 OA3 4 17 OB3 OA3 2 14 GNDB GNDA 5 16 GNDB GNDA 3 13 OB4 OA4 6 15 OB4 OA4 4 12 OB5 OA5 7 14 OB5 OA5 5 11 MON GNDQ 8 13 MON OEA 9 12 OEB INA 10 11 INB 7 OEA SSOP/ QSOP TOP VIEW VCC Description Input Power Supply Voltage Unit Pin Names -0.5 to +4.6 V OEA, OEB Description 3-State Output Enable Inputs (Active LOW) VI Input Voltage -0.5 to +5.5 V INA, INB Clock Inputs Output Voltage -0.5 to VCC+0.5 V OAn, OBn Clock Outputs TJ Junction Temperature 150 C MON Monitor Output TSTG Storage Temperature -65 to +165 C NOTE: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. FUNCTION TABLE (1) Inputs CAPACITANCE (TA = +25 C, f = 1.0MHz) Conditions Typ. Max. Unit CIN Input Capacitance VIN = 0V 3 4 pF COUT Output Capacitance VOUT = 0V -- 6 pF NOTE: 1. This parameter is measured at characterization but not tested. 2 Outputs OEA, OEB INA, INB OAn, OBn MON L L L L L H H H H L Z L H H Z H NOTE: 1. H = HIGH L = LOW Z = High-Impedance O Parameter(1) 10 PIN DESCRIPTION Max VO Symbol 9 VFQFPN TOP VIEW ABSOLUTE MAXIMUM RATINGS(1) Symbol 8 INA 6 GNDQ 20 19 OEB 1 INB VCCA IDT49FCT20805 2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified Industrial: TA = -40C to +85C, VCC = 2.5V 0.2V Symbol Test Conditions(1) Parameter Min. Typ.(2) Max. Unit VIH Input HIGH Level 1.7 -- 5.5 V VIL Input LOW Level -0.5 -- 0.7 V IIH Input HIGH Current VCC = Max. VI = 5.5V -- -- 1 IIL Input LOW Current VCC = Max. VI = GND -- -- 1 IOZH High Impedance Output Current VCC = Max. VO = VCC -- -- 1 IOZL (3-State Outputs Pins) -- -- 1 VIK Clamp Diode Voltage VCC = Min., IIN = -18mA -- -0.7 -1.2 V IODH Output HIGH Current VCC = 2.5V, VIN = VIH or VIL, VO = 1.25V(3,4) -15 -35 -90 mA IODL Output LOW Current VCC = 2.5V, VIN = VIH or VIL, VO = 1.25V(3,4) 25 55 100 mA -30 -50 -120 mA V IOS VOH VOL Short Circuit Current Output HIGH Voltage Output LOW Voltage VO = GND VCC = Max., VO = GND(3,4) 1.7(5) -- -- VCC - 0.2 -- -- VCC = Min. IOH = -8mA VIN = VIH or VIL IOH = -100A VCC = Min. IOL = 8mA -- 0.2 0.4 VIN = VIH or VIL IOL = 100A -- -- 0.2 NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 2.5V, 25C ambient. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 4. This parameter is guaranteed but not tested. 5. VOH = Vcc -0.6V at rated current. 3 A V IDT49FCT20805 2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE POWER SUPPLY CHARACTERISTICS Symbol ICCL ICCH ICCZ ICC Parameter Quiescent Power Supply Current Test Conditions(1) VCC = Max. VIN = GND or VCC Power Supply Current per Input HIGH VCC = Max. VIN = VCC -0.6V ICCD Dynamic Power Supply Current per Output(3) VCC = Max. CL = 15pF All Outputs Toggling VCC = Max. CL = 15pF All Outputs Toggling fi = 133MHz VCC = Max. CL = 15pF All Outputs Toggling fi = 166MHz IC Total Power Supply Current(4) Min. -- Typ.(2) 0.1 Max. 20 Unit A -- 35 250 A VIN = VCC VIN = GND -- 65 100 A/MHz VIN = VCC VIN = GND VIN = VCC -0.6V VIN = GND VIN = VCC VIN = GND VIN = VCC -0.6V VIN = GND -- 100 125 -- 100 125 -- 115 150 -- 115 150 mA NOTES: 1. 2. 3. 4. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. Typical values are at VCC = 2.5V, +25C ambient. This parameter is not directly testable, but is derived for use in Total Power Supply calculations. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ICC DHNT + ICCD (fONO) ICC = Quiescent Current (ICCL, ICCH and ICCZ) ICC = Power Supply Current for a TTL High Input (VIN = VCC -0.6V) DH = Duty Cycle for TTL Inputs High NT = Number of TTL Inputs at DH ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL) fO = Output Frequency NO = Number of Outputs at fO 4 IDT49FCT20805 2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE SWITCHING CHARACTERISTICS OVER OPERATING RANGE(3,4) Symbol Parameter Conditions(1) Min.(2) Max. Unit 1 3 ns tPLH Propagation Delay CL = 15pF tPHL INA to OAn, INB to OBn f 133MHz tR Output Rise Time (0.8V to 2V) -- 1.5 ns tF Output Fall Time (2V to 0.8V) -- 1.5 ns tSK(O) Same device output pin to pin skew(5) -- 270 ps tSK(P) Pulse skew(6,9) -- 270 ps tSK(PP) Part to part skew(7) -- 550 ps tPZL Output Enable Time -- 5.2 ns tPZH OEA to OAn, OEB to OBn tPLZ Output Disable Time -- 5.2 ns tPHZ OEA to OAn, OEB to OBn fMAX Input Frequency -- 133 MHz Conditions(1,8) Min.(2) Max. Unit CL = 15pF 0.5 2.5 ns Symbol Parameter tPLH Propagation Delay tPHL INA to OAn, INB to OBn 133MHz f 166MHz tR Output Rise Time (0.7V to 1.7V) -- 1.25 ns tF Output Fall Time (1.7V to 0.7V) -- 1.25 ns tSK(O) Same device output pin to pin skew(5) -- 200 ps tSK(P) Pulse skew(6,9) -- 270 ps tSK(PP) Part to part skew(7) -- 550 ps -- 5.2 ns -- 5.2 ns -- 166 MHz tPZL Output Enable Time tPZH OEA to OAn, OEB to OBn tPLZ Output Disable Time tPHZ OEA to OAn, OEB to OBn fMAX Input Frequency NOTES: 1. See test circuits and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. tPLH and tPHL are production tested. All other parameters guaranteed but not production tested. 4. Propagation delay range indicated by Min. and Max. limit is due to VCC, operating temperature and process parameters. These propagation delay limits do not imply skew. 5. Skew measured between all outputs under identical transitions and load conditions. 6. Skew measured is difference between propagation delay times tPHL and tPLH of same outputs under identical load conditions. 7. Part to part skew for all outputs given identical transitions and load conditions at identical VCC levels and temperature. 8. Airflow of 1m/s is recommended for frequencies above 133MHz. 9. This parameter is measured using f = 1MHz. 5 IDT49FCT20805 2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS 4.6V VCC Open GND 500 VIN VOUT Pulse Generator D.U.T RL CL RT 500 Enable and Disable Time Circuit V CC INPUT tPLH1 VIN VOUT Pulse Generator tPHL1 OUTPUT 1 D.U.T RL tSK(o) CL RT tSK(o) OUTPUT 2 tPLH2 2.5V 1.25V 0V VOH 1.25V VOL VOH 1.25V VOL tPHL2 tSK(o) = |tPLH2 - tPLH1| or |tPHL2 - tPHL1| Output Skew - tSK(O) CL = 15pF Test Circuit SWITCH POSITION TEST CONDITIONS Test Switch Symbol VCC = 2.5V 0.2V Unit Disable Low Enable Low 4.6V CL 15 pF RT ZOUT of pulse generator Disable High Enable High GND RL 33 t R / tF 1 (0V to 2.5V or 2.5V to 0V) ns DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. tR / tF = Rise/Fall time of the input stimulus from the Pulse Generator. 6 IDT49FCT20805 2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS ENABLE DISABLE 2.5V CONTROL INPUT t PLZ SWITCH CLOSED OUTPUT NORMALLY HIGH VOH 0.3V tSK(PP) VOL 0.3V SWITCH OPEN VOH tPLH2 1.25V VOL tSK(PP) PACKAGE 2 OUTPUT t PHZ t PZH VOH 1.25V VOL PACKAGE 1 OUTPUT 0V VOH 1.25V tPHL1 tPLH1 1.25V tPZL OUTPUT NORMALLY LOW 2.5V 1.25V 0V INPUT VOL tPHL2 tSK(PP) = |tPLH2 - tPLH1| or |tPHL2 - tPHL1| Part-to-Part Skew - tSK(PP) Enable and Disable Times NOTE: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH Part-to-Part Skew is for the same package and speed grade. 2.5V INPUT 2.5V INPUT 1.25V 1.25V 0V tPLH 0V tPHL tPLH tPHL VOH 1.7V OUTPUT 0.7V tR VOH 1.25V VOL VOH OUTPUT 1.25V 1.25V V OL VOL tSK(P) = |tPLH - tPLH| tF Propagation Delay Pulse Skew 7 IDT49FCT20805 2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDT49FCT XXXX Device Type X Package X Process CORPORATE HEADQUARTERS 6024 Silver Creek Valley Road San Jose, CA 95138 I -40C to +85C (Industrial) PY PYG Q QG NDG Shrink Small Outline IC SSOP - Green Quarter-size Small Outline IC QSOP - Green Very Fine Pitch Quad Flat Pack - Green 20805 2.5V CMOS Dual 1-to-5 Clock Driver for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com 8 for Tech Support: clockhelp@idt.com