IDT54FCT833A Просмотр технического описания (PDF) - Integrated Device Technology
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IDT54FCT833A Datasheet PDF : 8 Pages
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IDT54/74FCT833A/B
FAST CMOS PARITY BUS TRANSCEIVER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS VLC = 0.2V; VHC = VCC – 0.2V
Symbol
Parameter
Test Conditions(1)
ICC
Quiescent Power Supply Current Vcc = Max.; VIN ≥ VHC, VIN ≤ VLC
∆ICC
ICCD
Quiescent Power Supply Current
TTL Inputs HIGH
Dynamic Power Supply Current(4)
Outputs Open
Vcc = Max.
VIN = 3.4V(3)
Vcc = Max.
VIN ≤ VLC
OET = OER = GND
VIN ≥ VHC
One Input Toggling
50% Duty Cycle
IC
Total Power Supply Current(6)
Vcc = Max.
Outputs Open
fCP = 10MHz
VIN ≥ VHC
VIN ≤ VLC
(FCT)
50% Duty Cycle
OET = GND
OER = VCC
VIN = 3.4V
VIN = GND
fi = 2.5MHz
One Bit Toggling
Vcc = Max.
Outputs Open
VIN ≥ VHC
VIN ≤ VLC
fCP = 10MHz
(FCT)
50% Duty Cycle
OET = GND
VIN = 3.4V
fi = 2.5MHz
OER = VCC
Eight Bits Toggling
VIN = GND
Min.
—
—
Typ.(2)
0.2
0.5
Max.
1.5
2.0
—
0.15 0.25
—
1.4
3.4
—
1.9
5.4
—
4.0
7.8(5)
—
6.2 16.8(5)
Unit
mA
mA
mA/
MHz
mA
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 Output 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.
2557 tbl 07
7.21
5
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