![](http://datasheet.mmic.net.cn/120000/54FCT521LB_datasheet_3270170/54FCT521LB_3.png)
MILITARYANDCOMMERCIAL TEMPERATURERANGES
IDT54/74FCT521/A/B/C
FAST CMOS 8-BIT IDENTITY COMPARATOR
3
Symbol
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
VIH
Input HIGH Level
Guaranteed Logic HIGH Level
2
—
V
VIL
Input LOW Level
Guaranteed Logic LOW Level
—
0.8
V
IIH
Input HIGH Current
VI = VCC
——
5
VCC = Max.
VI = 2.7V
—
5(4)
A
IIL
Input LOW Current
VI = 0.5V
—
–5(4)
VI = GND
—
–5
IOZH
VO = VCC
——
10
Off State (High Impedance)
VCC = Max.
VO = 2.7V
—
10(4)
A
IOZL
Output Current
VO = 0.5V
—
–10(4)
VO = GND
—
–10
VIK
Clamp Diode Voltage
VCC = Min., IIN = –18mA
—
–0.7
–1.2
V
IOS
Short Circuit Current
VCC = Max., VO = GND(3)
–60
–120
—
mA
VOH
Output HIGH Voltage
VCC = 3V, VIN = VLC or VHC, IOH = –32
AVHC
VCC
—
VCC = Min
IOH = –300
AVHC
VCC
—V
VIN = VIH or VIL
IOH = –12mA MIL
2.4
4.3
—
IOH = –15mA COM'L
2.4
4.3
—
VOL
Output LOWVoltage
VCC = 3V, VIN = VLC or VHC, IOL = 300
A
—
GND
VLC
VCC = Min
IOL = 300
A
—
GND
VLC(4)
V
VIN = VIH or VIL
IOL = 32mA MIL
—
0.3
0.5
IOL = 48mA COM'L
—
0.3
0.5
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified: VLC = 0.2V; VHC = VCC - 0.2V
Commercial: TA = 0°C to +70°C, VCC = 5.0V ±5%, Military: TA = -55°C to +125°C, VCC = 5.0V ±10%
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 and maximum loading.
3. Not more than one output should be tested at one time. Duration of the test should not exceed one second.
4. This parameter is guaranteed but not ttested.