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IDT74FCT38075 3.3V CMOS 1-TO-5 CLOCK DRIVER
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS 1-TO-5 CLOCK DRIVER
IDT74FCT38075
FEATURES:
* * * * * * * * * * * * * Advanced CMOS Technology Guaranteed low skew < 100ps (max.) Very low duty cycle distortion< 250ps (max.) High speed propagation delay< 3ns (max.) Very low CMOS power levels TTL compatible inputs and outputs 1:5 fanout Maximum output rise and fall time < 1.5ns (max.) Low input capacitance: 3pF typical VCC = 3.3V 0.3V Inputs can be driven from 3.3V or 5V components Operating frequency up to 166MHz Available in SOIC package
DESCRIPTION:
The FCT38075 is a 3.3V clock driver built using advanced CMOS technology. This low skew clock driver offers 1:5 fanout. The large fanout from a single input reduces loading on the preceding driver and provides an efficient clock distribution network. Multiple power and grounds reduce noise. Typical applications are clock and signal distribution.
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATION
O1
O5 1 2 3 4 8 7 6 5 O4 O3 O2 O1 VCC IN
O2 IN O3
GND
O4
SOIC TOP VIEW
O5
INDUSTRIAL TEMPERATURE RANGE
1
c 2004 Integrated Device Technology, Inc.
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
AUGUST 2004
DSC-6593/6
IDT74FCT38075 3.3V CMOS 1-TO-5 CLOCK DRIVER
INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VCC VI VO TJ TSTG Description Input Power Supply Voltage Input Voltage Output Voltage Junction Temperature Storage Temperature Max -0.5 to +4.6 -0.5 to +5.5 -0.5 to VCC+0.5 150 -65 to +165 Unit V V V C C
CAPACITANCE (TA = +25OC, f = 1.0MHz)
Symbol CIN COUT Parameter(1) Input Capacitance Output Capacitance Conditions VIN = 0V VOUT = 0V Typ. 3 -- Max. 4 6 Unit pF pF
NOTE: 1. This parameter is measured at characterization but not tested.
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 DESCRIPTION
Pin Names IN Ox Input Outputs Description
POWER SUPPLY CHARACTERISTICS
Symbol ICCQ ICC ICCD Parameter Quiescent Power Supply Current Power Supply Current per Input HIGH Dynamic Power Supply Current per Output(3) IC Total Power Supply Current(4) VCC = Max. VCC = Max. 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
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 = 3.3V, +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 (fi) ICC = Quiescent Current 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
Test Conditions(1) VIN = GND or VCC VIN = VCC - 0.6V VIN = VCC VIN = GND VIN = VCC VIN = GND VIN = VCC -0.6V VIN = GND VIN = VCC VIN = GND VIN = VCC -0.6V VIN = GND
Min. -- -- --
Typ.(2) 0.1 45 80
Max. 30 300 120
Unit A A A/MHz
90 90 -- -- 120 120
120 120 mA 150 150
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IDT74FCT38075 3.3V CMOS 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 = 3.3V 0.3V
Symbol VIH VIL IIH IIL VIK IODH IODL IOS VOH VOL Parameter Input HIGH Level Input LOW Level Input HIGH Current Input LOW Current Clamp Diode Voltage Output HIGH Current Output LOW Current Short Circuit Current Output HIGH Voltage Output LOW Voltage VCC = Max. VCC = Max. VCC = Min., IIN = -18mA VCC = 3.3V, VIN = VIH or VIL, VO = VCC = Max., VO = VCC = Min. VIN = VIH or VIL VCC = Min. VIN = VIH or VIL GND(3,4) IOH = -12mA IOH = -100A IOL = 12mA IOL = 100A 1.5V(3,4) VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3,4) VI = 5.5V VI = GND Test Conditions(1) Min. 2 -0.5 -- -- -- -45 50 -60 2.4(5) VCC - 0.2 -- -- Typ.(2) -- -- -- -- -0.7 -75 92 -135 3 -- 0.3 -- Max. 5.5 0.8 1 1 -1.2 -180 200 -240 -- -- 0.5 0.2 V V mA mA mA V Unit V V A
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 = 3.3, 25C ambient. 3. This parameter is guaranteed but not tested. 4. Not more than one output should be shorted at one time. Duration of the test should not exceed one second. 5. VOH = VCC - 0.6V at rated current.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE (3,4)
Symbol tPLH tPHL tR tF tSK(O) tSK(P) tSK(PP) fMAX Output Rise Time (0.8V to 2V) Output Fall Time (2V to 0.8V) Same device output pin-to-pin skew(5) Pulse skew(6) Part to part skew(7) Input Frequency Parameter Propagation Delay Conditions(1,8) CL = 15pF f 166MHz -- -- -- -- -- -- 1.5 1.5 100 250 550 166 ns ns ps ps ps MHz Min.(2) 0.5 Max. 3 Unit ns
NOTES: 1. See test circuits and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. tPLH, tPHL, tSK(P), and tSK(O) 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 output 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.
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IDT74FCT38075 3.3V CMOS 1-TO-5 CLOCK DRIVER
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS TEST CONDITIONS
Symbol CL RL RT tR / tF VCC = 3.3V 0.3V 15 33 ZOUT of pulse generator 1 (0V to 3V or 3V to 0V) Unit pF ns
Pulse Generator RT VIN D.U.T. RL 15pF CL VOUT VCC
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.
CL = 15pF Circuit
TEST WAVEFORMS
3V 1.5V INPUT tPLH tPHL VOH 2.0V OUTPUT tR tF 0.8V 1.5V VOL OUTPUT 2 tPLH2 tPHL2 OUTPUT 1 tSK(o) tSK(o) 0V INPUT tPLH1 3V 1.5V 0V VOH 1.5V VOL VOH 1.5V VOL
tPHL1
tSK(o) = |tPLH2 - tPLH1| or |tPHL2 - tPHL1|
Propagation Delay Output Skew - tSK(O)
INPUT tPLH tPHL
3V 1.5V 0V VOH 1.5V VOL
INPUT
tPLH1
tPHL1
3V 1.5V 0V VOH 1.5V VOL
PACKAGE 1 OUTPUT tSK(PP) tSK(PP)
OUTPUT tSK(p) = |tPHL - tPLH|
PACKAGE 2 OUTPUT
tPLH2
tPHL2
VOH 1.5V VOL
Pulse Skew - tSK(P)
tSK(PP) = |tPLH2 - tPLH1| or |tPHL2 - tPHL1|
Part-to-Part Skew - tSK(PP)
Part-to-Part Skew is for the same package and speed grade.
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IDT74FCT38075 3.3V CMOS 1-TO-5 CLOCK DRIVER
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDT74FCT XXXX Device Type X Package X Process
I
-40C to +85C (Industrial)
DC DCG
Small Outline IC SOIC - Green
38075
3.3V CMOS 1-to-5 Clock Driver
CORPORATE HEADQUARTERS 6024 Silver Creek Valley Road San Jose, CA 95138
for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com 5
for Tech Support: clockhelp@idt.com

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