49FCT3805 Datasheet PDF - IDT

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49FCT3805
IDT

Part Number 49FCT3805
Description IDT49FCT3805
Page 7 Pages


49FCT3805 datasheet pdf
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IDT49FCT3805/A
3.3V CMOS BUFFER/CLOCK DRIVER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS
BUFFER/CLOCK DRIVER
IDT49FCT3805/A
FEATURES:
• 0.5 MICRON CMOS Technology
• Guaranteed low skew < 500ps (max.)
• Very low duty cycle distortion < 1.0ns (max.)
• Very low CMOS power levels
• TTL compatible inputs and outputs
• Inputs can be driven from 3.3V or 5V components
www.DataShTeweto4Uin.cdoempendent output banks with 3-state control
• 1:5 fanout per bank
• "Heartbeat" monitor output
• VCC = 3.3V ± 0.3V
• Available in SSOP, SOIC, and QSOP packages
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION:
The FCT3805 is a 3.3 volt, non-inverting clock driver built using
advanced dual metal 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 FCT3805 offers low capacitance inputs
with hysteresis.
The FCT3805 is designed for high speed clock distribution where signal
quality and skew are critical. The FCT3805 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.
For more information on using the FCT3805 with two different input
frequencies on bank A and B, please see AN-236.
PIN CONFIGURATION
OEA
INA
INB
OEB
5
OA1 - OA5
5
OB1 - OB5
MON
VCCA
OA1
OA2
OA3
GNDA
OA4
OA5
GNDQ
OEA
INA
1
2
3
4
5
6
7
8
9
10
20 VCCB
19 OB1
18 OB2
17 OB3
16 GNDB
15 OB4
14 OB5
13 MON
12 OEB
11 INB
SOIC/ SSOP/ QSOP
TOP VIEW
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL AND INDUSTRIAL
c 2004 Integrated Device Technology, Inc.
TEMPERATURE
1
RANGE
SEPTEMBER 2004
DSC-3102/5



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IDT49FCT3805/A
3.3V CMOS BUFFER/CLOCK DRIVER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS(1)
Symbol Description
Max Unit
VTERM(2) Terminal Voltage with Respect to GND –0.5 to +4.6
V
VTERM(3) Terminal Voltage with Respect to GND
–0.5 to +7
V
VTERM(4) Terminal Voltage with Respect to GND –0.5 to VCC+0.5 V
TSTG StorageTemperature
–65 to +150 °C
IOUT DC Output Current
–60 to +60 mA
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
www.DataSheceotn4dUitio.cnosmfor extended periods may affect reliability.
2. VCC terminals.
3. Input terminals.
4. Outputs and I/O terminals.
CAPACITANCE (TA = +25OC, f = 1.0MHz)
Symbol Parameter(1)
Conditions Typ. Max.
CIN
Input Capacitance
VIN = 0V 4.5
6
COUT
OutputCapacitance VOUT = 0V 5.5
8
NOTE:
1. This parameter is measured at characterization but not tested.
Unit
pF
pF
PIN DESCRIPTION
Pin Names
Description
OEA, OEB
3-State Output Enable Inputs (Active LOW)
INA, INB
Clock Inputs
OAn, OBn
Clock Outputs
MON
Monitor Output
FUNCTION TABLE (1)
Inputs
OEA, OEB
INA, INB
LL
LH
HL
HH
NOTE:
1. H = HIGH
L = LOW
Z = High-Impedance
Outputs
OAn, OBn
L
H
Z
Z
MON
L
H
L
H
2



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IDT49FCT3805/A
3.3V CMOS BUFFER/CLOCK DRIVER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified
Commercial: TA = 0°C to +70°C, Industrial: TA = -40°C to +85°C, VCC = 3.3V ± 0.3V
Symbol
Parameter
Test Conditions(1)
Min.
VIH Input HIGH Level (Input pins)
Guaranteed Logic HIGH Level
2
Input HIGH Level (I/O pins)
2
VIL
Input LOW Level (Input and I/O pins)
Guaranteed Logic LOW Level
–0.5
IIH Input HIGH Current (Input pins)
VCC = Max.
VI = 5.5V
Input HIGH Current (I/O pins)
VI = VCC
IIL Input LOW Current (Input pins)
VCC = Max.
VI = GND
Input LOW Current (I/O pins)
www.DataSheIOeZt4HU.com High Impedence Output Current
VCC = Max.
VI = GND
VO = VCC
IOZL (3-StateOutputPins)
VO = GND
VIK Clamp Diode Voltage
VCC = Min., IIN = –18mA
IODH Output HIGH Current
VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3)
–36
IODL Output LOW Current
VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3)
50
VOH Output HIGH Voltage
VCC = Min.
IOH = –0.1mA
VCC–0.2
VIN = VIH or VIL
IOH = –8mA
2.4(5)
VOL OutputLOWVoltage
VCC = Min.
IOL = 0.1mA
VIN = VIH or VIL
IOL = 16mA
IOL = 24mA
IOFF Input Power Off Leakage
VCC = 0V, VIN = 4.5V
IOS Short Circuit Current(4)
VCC = Max., VO = GND(3)
–60
VH Input Hysteresis
——
ICCL Quiescent Power Supply Current
VCC = Max.
ICCH VIN = GND or VCC
ICCZ
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 = 3.3V, +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.
Typ.
–0.7
–60
90
3
0.2
0.3
–135
150
0.1
Max.
5.5
VCC + 0.5
0.8
±1
±1
±1
±1
±1
±1
–1.2
–110
200
0.2
0.4
0.5
±1
–240
10
Unit
V
V
µA
µA
V
mA
mA
V
V
µA
mA
mV
µA
3



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IDT49FCT3805/A
3.3V CMOS BUFFER/CLOCK DRIVER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol
Parameter
Test Conditions(1)
ICC
Quiescent Power Supply Current
VCC = Max.
TTL Inputs HIGH
VIN = VCC –0.6V(3)
ICCD
Dynamic Power Supply Current(4)
VCC = Max.
VIN = VCC
Outputs Open
VIN = GND
OEA = OEB = GND
Per Output Toggling
50% Duty Cycle
IC
www.DataSheet4U.com
Total Power Supply Current(6)
VCC = Max.
Outputs Open
VIN = VCC
VIN = GND
fO = 25MHz
50% Duty Cycle
VIN = VCC –0.6V
OEA = OEB = VCC
VIN = GND
Mon. Output Toggling
VCC = Max.
VIN = VCC
Outputs Open
VIN = GND
fO = 50MHz
50% Duty Cycle
VIN = VCC –0.6V
OEA = OEB = GND
VIN = GND
Eleven Outputs Toggling
Min. Typ.(2)
— 10
— 0.035
— 0.9
— 0.9
— 20
— 20
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 = 3.3V, +25°C ambient.
3. Per TTL driven input (VIN = VCC -0.6V); all other inputs at VCC or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply calculations.
5. Values for these conditions are examples of the IC formula. These limits are guaranteed but not tested.
6. 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
All currents are in milliamps and all frequencies are in megahertz.
Max. Unit
30 µA
0.06 mA/MHz
1.6
1.6
33(5) mA
33(5)
4



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