IDT54/74FCT373T/AT/CT
FASTCMOSOCTALTRANSPARENTLATCH
MILITARYANDINDUSTRIALTEMPERATURERANGES
POWERSUPPLYCHARACTERISTICS
Symbol
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
ΔICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
VIN = 3.4V
—
0.5
2
mA
(3)
ICCD
Dynamic Power Supply
Current(4)
VCC = Max.
Outputs Open
OE = GND
VIN = VCC
VIN = GND
—
0.15
0.25
mA/
MHz
One Input Toggling
50% Duty Cycle
IC
Total Power Supply Current(6)
VCC = Max.
Outputs Open
fi = 10MHz
VIN = VCC
VIN = GND
—
—
1.5
1.8
3.5
4.5
mA
mA
50% Duty Cycle
OE = GND
LE = VCC
One Bit Toggling
VIN = 3.4V
VIN = GND
(5)
6
VCC = Max.
Outputs Open
fi = 2.5MHz
VIN = VCC
VIN = GND
—
—
3
5
(5)
14
50% Duty Cycle
OE = GND
VIN = 3.4V
VIN = GND
LE = VCC
Eight Bits Toggling
NOTES:
1. For conditions shown as Min. or Max., 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 ΔICC formula. These limits are guaranteed but not tested.
6. IC = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ΔICC DHNT + ICCD (fCP/2+ fiNi)
ICC = Quiescent Current
ΔICC = 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 = Output Frequency
Ni = Number of Outputs at fi
All currents are in milliamps and all frequencies are in megahertz.
4