IDT IDT74FCT38072 3.3v cmos 1-to-2 clock driver Datasheet

IDT74FCT38072
3.3V CMOS 1-TO-2 CLOCK DRIVER
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS
1-TO-2 CLOCK DRIVER
IDT74FCT38072
FEATURES:
DESCRIPTION:
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATION
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The FCT38072 is a 3.3V clock driver built using advanced CMOS
technology. This low skew clock driver offers 1:2 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.
Advanced CMOS Technology
Guaranteed low skew < 100ps (max.)
Very low duty cycle distortion< 350ps (max.)
High speed propagation delay< 3ns (max.)
Very low CMOS power levels
TTL compatible inputs and outputs
1:2 fanout
Maximum output rise and fall time < 1ns (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
O1
IN
O2
VCC
1
8
GND
VCC
2
7
O2
IN
3
6
O1
GND
4
5
GND
SOIC
TOP VIEW
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
MAY 2010
1
c
2004 Integrated Device Technology, Inc.
DSC-6595/5
IDT74FCT38072
3.3V CMOS 1-TO-2 CLOCK DRIVER
INDUSTRIAL TEMPERATURE RANGE
CAPACITANCE (TA = +25OC, f = 1.0MHz)
ABSOLUTE MAXIMUM RATINGS(1)
Parameter(1)
Max
Unit
Symbol
Conditions
Typ.
Max.
Unit
Input Power Supply Voltage
–0.5 to +4.6
V
CIN
Input Capacitance
VIN = 0V
3
4
pF
VI
Input Voltage
–0.5 to +5.5
V
COUT
Output Capacitance
VOUT = 0V
—
6
pF
VO
Output Voltage
–0.5 to VCC+0.5
V
TJ
Junction Temperature
150
°C
TSTG
Storage Temperature
–65 to +165
°C
Symbol
VCC
Description
NOTE:
1. This parameter is measured at characterization but not tested.
PIN DESCRIPTION
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 Names
Description
IN
Input
Ox
Outputs
POWER SUPPLY CHARACTERISTICS
Symbol
Test Conditions(1)
Parameter
ICCQ
Quiescent Power Supply Current
∆ICC
ICCD
Min.
Typ.(2)
Max.
Unit
—
0.1
30
µA
VCC = Max.
VIN = GND or VCC
Power Supply Current per Input HIGH
VCC = Max.
VIN = VCC - 0.6V
—
45
300
µA
Dynamic Power Supply Current
VCC = Max.
VIN = VCC
—
80
120
µA/MHz
per Output(3)
CL = 15pF
VIN = GND
60
90
60
90
—
85
115
—
85
115
All Outputs Toggling
IC
Total Power Supply Current(4)
VCC = Max.
VIN = VCC
CL = 15pF
VIN = GND
All Outputs Toggling
VIN = VCC –0.6V
fi = 133MHz
VIN = GND
VCC = Max.
VIN = VCC
CL = 15pF
VIN = GND
All Outputs Toggling
VIN = VCC –0.6V
fi = 166MHz
VIN = GND
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 = 3.3V, +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
∆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
IDT74FCT38072
3.3V CMOS 1-TO-2 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 = 3.3V ± 0.3V
Symbol
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
VIH
Input HIGH Level
2
—
5.5
V
VIL
Input LOW Level
–0.5
—
0.8
V
IIH
Input HIGH Current
—
—
±1
µA
IIL
VIK
VCC = Max.
VI = 5.5V
Input LOW Current
VCC = Max.
VI = GND
Clamp Diode Voltage
VCC = Min., IIN = –18mA
—
—
±1
—
–0.7
–1.2
V
1.5V(3,4)
–45
–75
–180
mA
50
92
200
mA
–60
IODH
Output HIGH Current
VCC = 3.3V, VIN = VIH or VIL, VO =
IODL
Output LOW Current
VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3,4)
IOS
VOH
VOL
Short Circuit Current
Output HIGH Voltage
Output LOW Voltage
VCC = Max., VO =
GND(3,4)
–135
–240
mA
V
VCC = Min.
IOH = –12mA
2.4(5)
3
—
VIN = VIH or VIL
IOH = –100µA
VCC - 0.2
—
—
VCC = Min.
IOL = 12mA
—
0.3
0.5
VIN = VIH or VIL
IOL = 100µA
—
—
0.2
V
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, 25°C 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
Parameter
Propagation Delay
Conditions(1,8)
Min.(2)
Max.
Unit
CL = 15pF
0.5
3
ns
1
ns
f ≤ 166MHz
tPHL
tR
Output Rise Time (0.8V to 2V)
—
tF
Output Fall Time (2V to 0.8V)
—
1
ns
tSK(O)
Same device output pin-to-pin skew(5)
—
100
ps
tSK(P)
Pulse skew(6)
—
350
ps
tSK(PP)
Part to part skew(7)
—
550
ps
Input Frequency
—
166
MHz
fMAX
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.
3
IDT74FCT38072
3.3V CMOS 1-TO-2 CLOCK DRIVER
INDUSTRIAL TEMPERATURE RANGE
TEST CIRCUITS
TEST CONDITIONS
VCC
Symbol
VCC = 3.3V ±0.3V
Unit
CL
15
pF
RL
33
Ω
RT
ZOUT of pulse generator
Ω
tR / tF
1 (0V to 3V or 3V to 0V)
ns
VIN
VOUT
Pulse
Generator
D.U.T.
15pF
RL
RT
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
CL = 15pF Circuit
TEST WAVEFORMS
3V
1.5V
INPUT
INPUT
0V
tPLH
tPLH1
tPHL1
tPHL
VOH
2.0V
0.8V
OUTPUT
1.5V
VOL
OUTPUT 1
tSK(o)
1.5V
tSK(o)
VOL
VOH
1.5V
VOL
OUTPUT 2
tF
tR
3V
1.5V
0V
VOH
tPLH2
tPHL2
tSK(o) = |tPLH2 - tPLH1| or |tPHL2 - tPHL1|
Propagation Delay
Output Skew - tSK(O)
3V
1.5V
0V
INPUT
tPLH
tPHL
OUTPUT
INPUT
VOH
1.5V
VOL
tPLH1
tPHL1
VOH
1.5V
VOL
PACKAGE 1 OUTPUT
tSK(PP)
tSK(PP)
tSK(p) = |tPHL - tPLH|
PACKAGE 2 OUTPUT
Pulse Skew - tSK(P)
3V
1.5V
0V
tPLH2
tPHL2
VOH
1.5V
VOL
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.
4
IDT74FCT38072
3.3V CMOS 1-TO-2 CLOCK DRIVER
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
IDT74FCT
XXXX
Device Type
X
Package
X
Process
CORPORATE HEADQUARTERS
6024 Silver Creek Valley Road
San Jose, CA 95138
I
-40°C to +85°C (Industrial)
DC
DCG
Small Outline IC
SOIC - Green
38072
3.3V CMOS 1-to-2 Clock Driver
for SALES:
800-345-7015 or 408-284-8200
fax: 408-284-2775
www.idt.com
5
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[email protected]
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