IDT74FCT20807 2.5V CMOS 1-TO-10 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE 2.5V CMOS 1-TO-10 CLOCK DRIVER IDT74FCT20807 FEATURES: DESCRIPTION: FUNCTIONAL BLOCK DIAGRAM PIN CONFIGURATION • • • • • • • • • • • The FCT20807 is a 2.5V compatible, high speed, low noise, 1:10 fanout, non-inverting clock buffer. The large fanout from a single input reduces loading on the preceding driver and provides an efficient clock distribution network. Providing output to output skew as low as 150ps, the FCT20807 is an ideal clock distribution device for synchronous systems. Multiple power and grounds reduce noise. Typical applications are clock and signal distribution. High frequency > 150MHz Guaranteed low skew < 150ps (max.) between any two outputs Very low duty cycle distortion < 300ps High speed: propagation delay < 3ns Very low CMOS power levels TTL compatible inputs and outputs 1:10 fanout Maximum output rise and fall time < 1.25ns (max.) Low input capacitance: 3pF typical 2.5V supply voltage Available in SSOP and QSOP packages O1 O2 O3 O4 O5 IN O6 IN 1 20 VCC GND 2 19 O10 O1 3 18 O9 VCC 4 17 GND O2 5 16 O8 GND 6 15 VCC O3 7 14 O7 VCC 8 13 GND O4 9 12 O6 10 11 O5 GND O7 SSOP/ QSOP TOP VIEW O8 O9 O10 The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE FEBRUARY 2003 1 c 2003 Integrated Device Technology, Inc. DSC - 6171/12 IDT74FCT20807 2.5V CMOS 1-TO-10 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) Symbol Description VTERM(2) VTERM(3) VTERM(4) CAPACITANCE (TA = +25OC, f = 1.0MHz) Max Unit Terminal Voltage with Respect to GND –0.5 to +4.6 V Terminal Voltage with Respect to GND –0.5 to +5.5 V Terminal Voltage with Respect to GND –0.5 to VCC+0.5 V TSTG Storage Temperature –65 to +150 °C IOUT DC Output Current –60 to +60 mA Parameter(1) Symbol CIN Input Capacitance Conditions Typ. Max. Unit VIN = 0V 3 4 pF NOTE: 1. This parameter is measured at characterization but not tested. NOTES: 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. 2. VCC terminals. 3. Input terminals. 4. Outputs and I/O terminals. PIN DESCRIPTION Pin Names Description IN Clock Inputs Ox Clock Outputs POWER SUPPLY CHARACTERISTICS Parameter Test Conditions(1) Min. Typ.(2) Max. Unit ICCL ICCH Quiescent Power Supply Current TTL Inputs HIGH VCC = Max. VIN = GND or VCC — 0.1 20 µA ∆ICC Power Supply Current per Input HIGH VCC = Max. VIN = VCC –0.6V — 45 300 µA ICCD Dynamic Power Supply Current per Output(3) VCC = 2.7V 15 pF 150 MHz — 40 — µA /MHz VCC = Max. CL = 12pF VIN = VCC VIN = GND — 65 90 Total Power Supply Current(4) All outputs toggling fi = 150MHz VIN = VCC –0.6V VIN = GND — 75 100 Symbol IC 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, +25°C 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 (fi) 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) fi = Input Frequency 2 IDT74FCT20807 2.5V CMOS 1-TO-10 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 — — V VIL Input LOW Level — — 0.7 V IIH Input HIGH Current (Input pins) — — ±1 mA IIL Input LOW Current (Input pins) VCC = Max., VI = GND — — ±1 mA VIK Clamp Diode Voltage VCC = Min., IIN = –18mA — –0.7 –1 V IODH Output HIGH Current VCC = 2.5V, VIN = VIH or VIL, VO = 1.25V(3) -25 -45 -100 mA IODL Output LOW Current VCC = 2.5V, VIN = VIH or VIL, VO = 1.25V(3) 20 55 120 mA VOH Output HIGH Voltage VCC = Min. IOH = –1mA VCC–0.2 — — V — — — 0.4 VOL Output LOW Voltage IOS Short Circuit Current(4) VCC = Max., VI = VCC VIN = VIH or VIL IOH = –8mA 1.8(5) VCC = Min. IOL = 1mA — VIN = VIH or VIL IOL = 8mA VCC = Max., VO = GND(3) — — 0.6 -25 -60 -135 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, +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. VOH = Vcc - 0.6V at rated current. 3 V mA IDT74FCT20807 2.5V CMOS 1-TO-10 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE SWITCHING CHARACTERISTICS OVER OPERATING RANGE(1,2) Following Conditions Apply Unless Otherwise Specified Industrial: TA = -40°C to +85°C, VCC = 2.5V ± 0.2V Symbol Parameter Conditions(3) Min. Typ. Max. Unit CL = 22pF 100 MHz — 3 3.5 ns tPLH tPHL Propagation Delay tR tF Output Rise Time Output Fall Time — — 1 1 1.25 1.25 ns ns tSK(O) tSK(P) Same Device Output Pin-to-Pin Skew(4) Pulse Skew(5) — — 100 250 150 300 ps ps tSK(PP) Part-to-Part Skew(6) — 400 600 ps Symbol tPLH Parameter Propagation Delay Min. — Typ. 2.4 Max. 2.7 Unit ns tPHL tR Output Rise Time — 1 1.2 ns tF tSK(O) Output Fall Time Same Device Output Pin-to-Pin Skew(4) — — 1 100 1.2 150 ns ps tSK(P) tSK(PP) Pulse Skew(5) Part-to-Part Skew(6) — — 250 400 300 600 ps ps Conditions(3,7) CL = 12pF 150 MHz NOTES: 1. tPLH and tPHL are production tested. All other parameters guaranteed but not production tested. 2. 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. 3. See test circuits and waveforms. 4. Skew measured between all outputs under identical transitions and load conditions. 5. Skew measured is difference between propagation delay times tPHL and tPLH of same output under identical load conditions. 6. Part to part skew for all outputs given identical transitions and load conditions at identical VCC levels and temperature. 7. Airflow of 1m/s is recommended for frequencies above 133MHz. 4 IDT74FCT20807 2.5V CMOS 1-TO-10 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS VCC INPUT VIN 2.5V 1.25V 0V VOH 1.25V VOL tPHL1 tPLH1 VOUT Pulse Generator D.U.T. OUTPUT 1 tSK(o) CL tSK(o) VOH 1.25V VOL OUTPUT 2 tPLH2 tPHL2 tSK(o) = |tPLH2 - tPLH1| or |tPHL2 - tPHL1| CL = Load Capacitance: Includes Jig and Probe Capacitance Output Skew - tSK(O) 2.5V 2.5V 1.25V 0V 1.25V INPUT INPUT 0V tPLH tPHL1 tPLH1 tPHL VOH 1.25V VOL VOH 1.25V VOL VOH 1.7V 0.7V OUTPUT DEVICE 1 OUTPUT 1.25V tSK(t) DEVICE 2 OUTPUT tF tR tSK(t) VOL tPLH2 tPHL2 tSK(t) = |tPLH2 - tPLH1| or |tPHL2 - tPHL1| Propagation Delay Part-to-Part Skew - tSK(PP) NOTE: Device 1 and device 2 are same package type and speed grade. TEST CONDITIONS 2.5V 1.25V 0V INPUT tPLH tPHL OUTPUT Symbol VCC = 2.5V ±0.2V Unit CL 22(1) pF 12(2) VOH 1.25V VOL RT ZOUT of pulse generator Ω t R / tF 1.25(1) ns 1.2(2) tSK(p) = |tPHL - tPLH| 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. Pulse Skew - tSK(P) NOTES: 1. Test conditions at 100MHz. 2. Test conditions at 150MHz. 5 IDT74FCT20807 2.5V CMOS 1-TO-10 CLOCK DRIVER INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION IDT74FCT XXXX Device Type X Package X Temp. Range CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 I Industrial (-40°C to +85°C) PY Q Shrink Small Outline IC Quarter-size Small Outline IC 20807 1-to-10 2.5V Clock Driver for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com 6 for Tech Support: [email protected] (408) 654-6459