參數(shù)資料
型號: IDT74FCT299ASO8
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 計數(shù)移位寄存器
英文描述: FCT SERIES, 8-BIT BIDIRECTIONAL PARALLEL IN PARALLEL OUT SHIFT REGISTER, TRUE OUTPUT, PDSO20
封裝: SOIC-20
文件頁數(shù): 4/7頁
文件大?。?/td> 119K
代理商: IDT74FCT299ASO8
COMMERCIAL TEMPERATURERANGE
4
IDT74FCT299A
FAST CMOS 8-INPUT UNIVERSAL SHIFT REGISTER
POWER SUPPLY CHARACTERISTICS
VLC = 0.2V; VHC = VCC – 0.2V
Symbol
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
ICC
Quiescent Power Supply
Vcc = Max.
0.2
1.5
mA
Current
VIN
≥ VHC; VIN ≤ VLC
ΔICC
Quiescent Power Supply
Vcc = Max.
0.5
2
mA
Current TTL Inputs HIGH
VIN = 3.4V
(3)
ICCD
Dynamic Power Supply
Vcc = Max.
VIN
≥ VHC
0.15
0.25
mA/MHz
Current
(4)
OutputsOpen
VIN
≤ VLC
OE1 = OE2 = GND
MR = VCC
S0 = S1 = VCC
DS0 = DS1 = GND
OneInputToggling
50% Duty Cycle
IC
Total Power Supply
Vcc = Max.
VIN
≥ VHC
1.7
4
mA
Current
(6)
OutputsOpen
VIN
≤ VLC
fCP = 10MHz
(FCT)
50% Duty Cycle
OE1 = OE2 = GND
MR = VCC
S0 = S1 = VCC
DS0 = DS7 = GND
VIN = 3.4V
2.2
6
One Bit Toggling
VIN = GND
at fi = 5MHz
50% Duty Cycle
Vcc = Max.
VIN
≥ VHC
4
7.8
(5)
OutputsOpen
VIN
≤ VLC
fCP = 10MHz
(FCT)
50% Duty Cycle
OE1 = OE2 = GND
MR = VCC
S0 = S1 = VCC
DS0 = DS7 = GND
VIN = 3.4V
6.2
16.8
(5)
EightBitsToggling
VIN = GND
at fi = 2.5MHz
50% Duty Cycle
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 +
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 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.
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