IDT49FCT20805_09 IDT | Alldatasheet

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2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE MAY 2010 2007 Integrated Device Technology, Inc. DSC-6172/113c IDT49FCT20805 INDUSTRIAL TEMPERATURE RANGE 2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER FUNCTIONAL BLOCK DIAGRAM FEATURES:

  • 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 CC = 2.5V ± 0.2V
  • Available in SSOP, QSOP, and VFQFPN packages The IDT logo is a registered trademark of Integrated Device Technology, Inc. DESCRIPTION: 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.

5 OA1 -O A5

INDUSTRIAL TEMPERATURE RANGE IDT49FCT20805 2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER CAPACITANCE (TA = +25OC, f = 1.0MHz) Symbol Parameter(1) Conditions Typ. Max. Unit CIN Input Capacitance V IN = 0V 3 4 pF COUT Output Capacitance V OUT = 0V — 6 pF NOTE: 1. This parameter is measured at characterization but not tested. PIN DESCRIPTION Pin Names Description OEA, OEB 3-State Output Enable Inputs (Active LOW) INA, IN B Clock Inputs OAn, OBn Clock Outputs MON Monitor Output FUNCTION TABLE (1) Inputs Outputs OEA, OEB INA, INB OAn, OBn MON LLL L LHH H HLZ L HH Z H NOTE: 1. H = HIGH L = LOW Z = High-Impedance ABSOLUTE MAXIMUM RATINGS(1) Symbol Description Max Unit VCC Input Power Supply Voltage –0.5 to +4.6 V VI Input Voltage –0.5 to +5.5 V VO Output Voltage –0.5 to VCC+0.5 V TJ Junction Temperature 150 ° C 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. PIN CONFIGURATIONS SSOP/ QSOP TOP VIEW VFQFPN TOP VIEW OA V CCA OA3 OA2 GNDA OB4 MON IN B OE B OB5 OA4 OA5 GND Q IN A OE A 6789 10 OB3 GNDB V CCB OB OB 1617181920 OA1 OA3 OA4 GNDQ INA VCCA OA2 GNDA OA5 OEA OB3 OB4 MON INB VCCB OB1 OB2 GNDB OB5 OEB

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 = -40°C to +85°C, VCC = 2.5V ± 0.2V Symbol Parameter Test Conditions(1) 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 V CC = Max. V I = 5.5V — — ±1 IIL Input LOW Current V CC = Max. V I = GND — — ±1µ A IOZH High Impedance Output Current V CC = Max. V O = VCC —— ±1 IOZL (3-State Outputs Pins) V O = GND — — ±1 VIK Clamp Diode Voltage V CC = Min., IIN = –18mA — –0.7 –1.2 V IODH Output HIGH Current V CC = 2.5V, VIN = VIH or VIL, VO = 1.25V(3,4) –15 –35 –90 mA IODL Output LOW Current V CC = 2.5V, VIN = VIH or VIL, VO = 1.25V(3,4) 25 55 100 m A IOS Short Circuit Current V CC = Max., V O = GND(3,4) –30 –50 –120 mA VOH Output HIGH Voltage V CC = Min. I OH = –8mA 1.7 (5) —— V VIN = VIH or VIL IOH = –100µAV CC - 0.2 — — VOL Output LOW Voltage V CC = Min. I OL = 8mA — 0.2 0.4 V VIN = VIH or VIL IOL = 100µA — — 0.2 NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable dev ice type. 2. Typical values are at V CC = 2.5V, 25 °C 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. V OH = Vcc -0.6V at rated current.

INDUSTRIAL TEMPERATURE RANGE IDT49FCT20805 2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable dev ice type. 2. Typical values are at V CC = 2.5V, +25°C ambient. 3. This parameter is not directly testable, but is derived for use in Total Power Supply calculations. 4. I C = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ∆ICC DHNT + ICCD (fONO) ICC = Quiescent Current (I CCL, ICCH and ICCZ) ∆ICC = Power Supply Current for a TTL High Input (V IN = VCC -0.6V) DH = Duty Cycle for TTL Inputs High NT = Number of TTL Inputs at D H ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL) fO = Output Frequency NO = Number of Outputs at f O POWER SUPPLY CHARACTERISTICS Symbol Parameter Test Conditions(1) Min. Typ.(2) Max. Unit ICCL Quiescent Power Supply Current V CC = Max. — 0.1 20 µA ICCH VIN = GND or VCC ICCZ ∆ICC Power Supply Current per Input HIGH V CC = Max. — 35 250 µA VIN = VCC –0.6V ICCD Dynamic Power Supply Current V CC = Max. V IN = VCC — 6 5 100 µA/MHz per Output(3) CL = 15pF V IN = GND All Outputs Toggling IC Total Power Supply Current(4) VCC = Max. V IN = VCC — 100 125 CL = 15pF V IN = GND All Outputs Toggling V IN = VCC –0.6V — 100 125 fi = 133MHz V IN = GND mA VCC = Max. V IN = VCC — 115 150 CL = 15pF V IN = GND All Outputs Toggling V IN = VCC –0.6V — 115 150 fi = 166MHz V IN = GND

2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE NOTES: 1. See test circuits and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. t PLH and t PHL are production tested. All other parameters guaranteed but not production tested. 5. Skew measured between all outputs under identical transitions and load conditions. 6. Skew measured is difference between propagation delay times t PHL and t PLH of same outputs under identical load conditions. 7. Part to part skew for all outputs given identical transitions and load conditions at identical V CC levels and temperature. 8. Airflow of 1m/s is recommended for frequencies above 133MHz. 9. This parameter is measured using f = 1MHz. Symbol Parameter Conditions (1,8) Min.(2) Max. Unit tPLH Propagation Delay C L = 15pF 0.5 2.5 ns 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 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 — 166 M H z SWITCHING CHARACTERISTICS OVER OPERATING RANGE(3,4) Symbol Parameter Conditions (1) Min.(2) Max. Unit tPLH Propagation Delay C L = 15pF 1 3 ns 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 M H z

INDUSTRIAL TEMPERATURE RANGE IDT49FCT20805 2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER CL = 15pF Test Circuit TEST CIRCUITS AND WAVEFORMS Enable and Disable Time Circuit Test Switch Disable Low 4.6V Enable Low Disable High GND Enable High SWITCH POSITION Output Skew - t SK(O) TEST CONDITIONS Symbol V CC = 2.5V ±0.2V Unit CL 15 pF RT ZOUT of pulse generator Ω RL 33 Ω tR / 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 Z OUT of the Pulse Generator. tR / tF = Rise/Fall time of the input stimulus from the Pulse Generator. tPLH1 OUTPUT 1 OUTPUT 2 tSK(o) tPLH2 2.5V VOH 1.25V 1.25V VOL VOH 1.25V VOL INPUT tPHL1 tPHL2 tSK(o) tSK(o) =| tPLH2 -tPLH1| or |tPHL2 -tPHL1| CL VOUT VCC Pulse Generator D.U.T VIN RT RL VCC Pulse Generator D.U.T VIN RT CL 4.6V GND VOUT RL 500 500 Open

2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE Enable and Disable Times Part-to-Part Skew - t SK(PP) NOTE: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH Propagation Delay TEST CIRCUITS AND WAVEFORMS Pulse Skew Part-to-Part Skew is for the same package and speed grade. CONTROL INPUT OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH 2.5V 1.25V VOH VOL SWITCH CLOSED SWITCH OPEN VOH0.3V 0.3V tPLZtPZL tPZH tPHZ VOH VOL 1.25V 1.25V ENABLE DISABLE INPUT tPLH1 PACKAGE 1 OUTPUT tSK(PP) tPLH2 1.25V VOL tPHL2 tSK(PP) =| tPLH2 -tPLH1| or |tPHL2 -tPHL1| PACKAGE 2 OUTPUT 2.5V VOH 1.25V 1.25V VOL VOH tPHL1 2.5V VOH tPLH tPHL VOL 1.25V 1.25V tR tF 1.7V 0.7V INPUT OUTPUT 2.5V VOH tPLH tPHL VOL 1.25V 1.25V INPUT OUTPUT tSK(P) =| tPLH -tPLH| VOL tSK(PP)

INDUSTRIAL TEMPERATURE RANGE IDT49FCT20805 2.5V CMOS DUAL 1-TO-5 CLOCK DRIVER

ORDERING INFORMATION

CORPORATE HEADQUARTERS for SALES: for Tech Support: 6024 Silver Creek Valley Road 800-345-7015 or 408-284-8200 clockhelp@idt.com San Jose, CA 95138 fax: 408-284-2775 www.idt.com IDT49FCT X PackageDevice Type 20805 2.5V CMOS Dual 1-to-5 Clock Driver PY PYG Q QG NDG Shrink Small Outline IC SSOP - Green Quarter-size Small Outline IC QSOP - Green V e r yF i n eP i t c hQ u a dF l a tP a c k-G r e e n XXXX X Process I -40°C to +85°C (Industrial)