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参数资料
| 型号： | IDT54FCT244CTLB |
| 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, CQCC20 |
| 封装： | LCC-20 |
| 文件页数： | 4/6页 |
| 文件大小： | 312K |
| 代理商： | IDT54FCT244CTLB |
MILITARYANDINDUSTRIALTEMPERATURERANGES
4
IDT54/74FCT244T/AT/CT
FASTCMOSOCTALBUFFER/LINEDRIVER
Symbol
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
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 = VCC
—
0.15
0.25
mA/
Current(4)
Outputs Open
VIN = GND
MHz
OEA = OEB = GND
One Input Toggling
50% Duty Cycle
IC
Total Power Supply Current(6)
VCC = Max.
VIN = VCC
—
1.5
3.5
mA
Outputs Open
VIN = GND
fi = 10MHz
50% Duty Cycle
VIN = 3.4V
—
1.8
4.5
OEA = OEB = GND
VIN = GND
One Bit Toggling
VCC = Max.
VIN = VCC
—3
6(5)
Outputs Open
VIN = GND
fi = 2.5MHz
50% Duty Cycle
VIN = 3.4V
—
5
14(5)
OEA = OEB = GND
VIN = GND
Eight Bits Toggling
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 = Output Frequency
Ni = Number of Outputs at fi
All currents are in milliamps and all frequencies are in megahertz.
POWER SUPPLY CHARACTERISTICS
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
54FCT244T
54/74FCT244AT
54/74FCT244CT
Mil.
Ind.
Mil.
Ind.
Mil.
Symbol
Parameter
Condition(1)
Min.(2)
Max.
Min.(2)
Max.
Min.(2)
Max.
Min.(2)
Max.
Min.(2)
Max.
Unit
tPLH
PropagationDelay
CL = 50pF
1.5
7
1.5
4.8
1.5
5.1
1.5
4.1
1.5
4.6
ns
tPHL
Dx to Ox
RL = 500
Ω
tPZH
OutputEnableTime
1.5
8.5
1.5
6.2
1.5
6.5
1.5
5.8
1.5
6.5
ns
tPZL
tPHZ
OutputDisableTime
1.5
7.5
1.5
5.6
1.5
5.9
1.5
5.2
1.5
5.7
ns
tPLZ
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
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