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參數(shù)資料
| 型號(hào)： | IDT74FCT245ASO8 |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | FCT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | SOIC-20 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 86K |
| 代理商： | IDT74FCT245ASO8 |
MILITARYANDCOMMERCIAL TEMPERATURERANGES
4
IDT54/74FCT245/A/C
FASTCMOSOCTALBIDIRECTIONALTRANSCEIVER
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 = Input Frequency
Ni = Number of Inputs at fi
All currents are in milliamps and all frequencies are in megahertz.
POWER SUPPLY CHARACTERISTICS
VLC = 0.2V; VHC = VCC - 0.2V
Symbol
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
ICC
Quiescent Power Supply Current
VCC = Max.
—
0.2
1.5
mA
VIN
≥ VHC; VIN ≤ VLC
ΔICC
Quiescent Power Supply Current
VCC = Max.
—
0.5
2
mA
TTL Inputs HIGH
VIN = 3.4V(3)
ICCD
Dynamic Power Supply
VCC = Max.
VIN
≥ VHC
—
0.15
0.25
mA/
Current(4)
Outputs Open
VIN
≤ VLC
MHz
OE = GND
T/
R = GND or VCC
One Input Toggling
50% Duty Cycle
IC
Total Power Supply Current(6)
VCC = Max.
VIN
≥ VHC
—2
4
mA
Outputs Open
VIN
≤ VLC
fI = 10MHz
(FCT)
50% Duty Cycle
VIN = 3.4V
—
2.3
5
T/
R = OE = GND
VIN = GND
One Bit Toggling
VCC = Max.
VIN
≥ VHC
—
3.5
6.5(5)
Outputs Open
VIN
≤ VLC
fI = 2.5MHz
(FCT)
50% Duty Cycle
VIN = 3.4V
—
5.5
14.5(5)
T/
R = OE = GND
VIN = GND
Eight Bits Toggling
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