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參數(shù)資料
| 型號： | IDT54FCT2157DTQB |
| 廠商： | Integrated Device Technology, Inc. |
| 英文描述： | FAST CMOS QUAD 2-INPUT MULTIPLEXER |
| 中文描述： | 快速CMOS四路2輸入多路復(fù)用器 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 135K |
| 代理商： | IDT54FCT2157DTQB |
6.6
4
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
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
ICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
VIN = 3.4(3)
—
0.5
2.0
mA
ICCD
Dynamic Power Supply Current(4)
VCC = Max.
Outputs Open
E or OE = GND
VIN = VCC
VIN = GND
FCTxxxT
—
0.15
0.25
mA/
MHz
One Bit Toggling
50% Duty Cycle
FCT2xxxT
—
0.06
0.12
IC
Total Power Supply Current(6)
VCC = Max.
VIN = VCC
FCTxxxT
—
1.5
3.5
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
VIN = GND
FCT2xxxT
0.9
3.2
VCC = Max.
VIN = VCC
FCTxxxT
—
1.5
3.5(5)
Outputs Open
VIN = GND
FCT2xxxT
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)
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.
2537 tbl 06
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