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参数资料
| 型号： | IDT74FCT138TDC |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | FCT SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16 |
| 封装： | 0.150 INCH, SOIC-16 |
| 文件页数： | 4/6页 |
| 文件大小： | 119K |
| 代理商： | IDT74FCT138TDC |
4
COMMERCIALTEMPERATURERANGE
IDT74FCT138T/AT/CT
FAST CMOS 1-OF-8 DECODER WITH ENABLE
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
mA
ICCD
Dynamic Power Supply Current(4)
VCC = Max.
Outputs Open
One Input Toggling
50% Duty Cycle
VIN = VCC
VIN = GND
—
0.15
0.3
mA/
MHz
IC
Total Power Supply Current (5)
VCC = Max.
Outputs Open
Toggle
E1, E2, or E3
VIN = VCC
VIN = GND
—1.5
4
mA
50% Duty Cycle
fo = 10MHz
One Input and
One Output Toggling
VIN = 3.4V
VIN = GND
—1.8
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. 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 Input 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.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
FCT138T
FCT138AT
FCT138CT
Symbol
Parameter
Condition (1)
Min. (2)
Max.
Min. (2)
Max.
Min. (2)
Max.
Unit
tPLH
tPHL
Propagation Delay
AN to
ON
CL = 50pF
RL = 500
1.5
9
1.5
5.8
1.5
5.1
ns
tPLH
tPHL
Propagation Delay
E1 or E2 to ON
1.5
9
1.5
5.9
1.5
5.2
ns
tPLH
tPHL
Propagation Delay
E3 to
ON
1.5
9
1.5
5.9
1.5
5.2
ns
NOTES:
1. See test circuit and wave forms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
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