IDT74FCT827ATEB Ver la hoja de datos (PDF) - Integrated Device Technology
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IDT74FCT827ATEB Datasheet PDF : 7 Pages
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IDT54/74FCT827AT/BT/CT/DT, IDT54/74FCT2827AT/BT/CT
HIGH-PERFORMANCE CMOS BUFFERS
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS
Symbol
∆ICC
ICCD
IC
Parameter
Quiescent Power Supply Current
TTL Inputs HIGH
Dynamic Power Supply Current(4)
Total Power Supply Current(6)
Test Conditions(1)
VCC = Max.
VIN = 3.4V(3)
VCC = Max.
VIN = VCC FCT827T
Outputs Open
OE1 = OE2 = GND
VIN = GND
FCT2827T
One Input Toggling
50% Duty Cycle
VCC = Max.
VIN = VCC FCT827T
Min.
—
—
—
—
Typ.(2)
0.5
0.15
0.06
1.5
Max.
2.0
0.25
0.12
3.5
Unit
mA
mA/
MHz
mA
Outputs Open
VIN = GND FCT2827T — 0.6 2.2
fi = 10MHz
50% Duty Cycle
VIN = 3.4V FCT827T — 1.8 4.5
OE1 = OE2 = GND
VIN = GND FCT2827T — 0.9 3.2
One Bit Toggling
VCC = Max.
VIN = VCC FCT827T —
3.0 6.0(5)
Outputs Open
VIN = GND FCT2827T —
1.2 3.4(5)
fi = 2.5MHz
50% Duty Cycle
VIN = 3.4V FCT827T —
5.0 14.0(5)
OE1 = OE2 = GND
VIN = GND FCT2827T —
3.2 11.4(5)
Eight Bits Toggling
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 = 5.0V, +25°C ambient.
3. Per TTL driven input (VIN = 3.4V). 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 ICC formula. These limits are guaranteed but not tested.
6. IC = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ∆ICC DHNT + ICCD (fCP/2 + fiNi)
ICC = Quiescent Current
∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
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)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
fi = Input Frequency
Ni = Number of Inputs at fi
All currents are in milliamps and all frequencies are in megahertz.
2573 tbl 08
6.22
4
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