IDT54FCT2157TLB データシートの表示（PDF） - Integrated Device Technology
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IDT54FCT2157TLB Datasheet PDF : 7 Pages
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IDT54/74FCT157T/AT/CT/DT, IDT54/74FCT257T/AT/CT/DT- 2257T/AT/CT
FAST CMOS QUAD 2-INPUT MULTIPLEXER
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 = 3.4(3)
VCC = Max.
VIN = VCC
Outputs Open
VIN = GND
E or OE = GND
One Bit Toggling
50% Duty Cycle
VCC = Max.
VIN = VCC
FCTxxxT
FCT2xxxT
FCTxxxT
Min. Typ.(2) Max.
— 0.5 2.0
— 0.15 0.25
— 0.06 0.12
— 1.5 3.5
Unit
mA
mA/
MHz
mA
Outputs Open
VIN = GND FCT2xxxT — 0.6 2.2
fO = 10MHz
50% Duty Cycle
VIN = 3.4 FCTxxxT
— 1.8 4.5
E or OE = GND
One Bit Toggling
VCC = Max.
Outputs Open
VIN = GND FCT2xxxT
VIN = VCC FCTxxxT
—
VIN = GND FCT2xxxT
0.9 3.2
1.5 3.5(5)
0.6 2.2(5)
fO = 2.5MHz
50% Duty Cycle
VIN = 3.4 FCTxxxT
2.5 7.5(5)
E or OE = GND
Four Bits Toggling
VIN = GND FCT2xxxT
1.6 6.2(5)
2537 tbl 06
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 (foNo)
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)
fo = Output Frequency
No = Number of Outputs at fo
All currents are in milliamps and all frequencies are in megahertz.
6.6
4
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