参数资料
型号: IDT74FCT244TP
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 总线收发器
英文描述: FCT SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDIP20
封装: PLASTIC, DIP-20
文件页数: 5/9页
文件大小: 183K
代理商: IDT74FCT244TP
IDT54/74FCT240/244T/AT/CT/DT - 2240/2244T/AT/CT, IDT54/74FCT540/541/2541T/AT/CT
FAST CMOS OCTAL BUFFER/LINE DRIVER
MILITARY AND INDUSTRIAL TEMPERATURE RANGES
6.8
5
POWER SUPPLY CHARACTERISTICS
Symbol
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
ICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
VIN = 3.4V(3)
0.5
2.0
mA
ICCD
Dynamic Power Supply
Current(4)
VCC = Max.
Outputs Open
OEA = OEB = GND
VIN = VCC
VIN = GND
FCTxxxT
0.15
0.25
mA/
MHz
One Input 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
fi = 10MHz
VIN = GND FCT2xxxT
0.6
2.2
50% Duty Cycle
OEA = OEB = GND
VIN = 3.4
FCTxxxT
1.8
4.5
One Bit Toggling
VIN = GND FCT2xxxT
0.9
3.2
VCC = Max.
VIN = VCC
FCTxxxT
3.0
6.0(5)
Outputs Open
fi = 2.5MHz
VIN = GND FCT2xxxT
1.2
3.4(5)
50% Duty Cycle
OEA = OEB = GND
VIN = 3.4
FCTxxxT
5.0
14.0(5)
Eight Bits Toggling
VIN = GND FCT2xxxT
3.2
11.4(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 (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 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.
2565 tbl 08
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