MM74HC251 데이터 시트보기 (PDF) - Fairchild Semiconductor
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MM74HC251 Datasheet PDF : 7 Pages
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Absolute Maximum Ratings(Note 1)
(Note 2)
Recommended Operating
Conditions
Supply Voltage (VCC)
DC Input Voltage (VIN)
DC Output Voltage (VOUT)
Clamp Diode Current (IIK, IOK)
DC Output Current, per pin (IOUT)
DC VCC or GND Current, per pin (ICC)
Storage Temperature Range (TSTG)
Power Dissipation (PD)
(Note 3)
S.O. Package only
Lead Temperature (TL)
(Soldering 10 seconds)
−0.5 to +7.0V
−1.5 to VCC +1.5V
−0.5 to VCC +0.5V
±20 mA
±25 mA
±50 mA
−65°C to +150°C
600 mW
500 mW
260°C
Min Max Units
Supply Voltage (VCC)
DC Input or Output Voltage
2
6
V
(VIN, VOUT)
0
VCC
V
Operating Temperature Range (TA) −40 +85
°C
Input Rise or Fall Times
(tr, tf) VCC = 2.0V
1000 ns
VCC = 4.5V
500
ns
VCC = 6.0V
400
ns
Note 1: Absolute Maximum Ratings are those values beyond which dam-
age to the device may occur.
Note 2: Unless otherwise specified all voltages are referenced to ground.
Note 3: Power Dissipation temperature derating — plastic “N” package: −
12 mW/°C from 65°C to 85°C.
DC Electrical Characteristics (Note 4)
Symbol
Parameter
Conditions
VCC
TA = 25°C
TA = −40 to 85°C TA = −55 to 125°C Units
Typ
Guaranteed Limits
VIH
Minimum HIGH Level
Input Voltage
2.0V
4.5V
1.5
1.5
3.15
3.15
1.5
V
3.15
V
6.0V
4.2
4.2
4.2
V
VIL
Maximum LOW Level
Input Voltage
2.0V
4.5V
0.5
0.5
1.35
1.35
0.5
V
1.35
V
6.0V
1.8
1.8
1.8
V
VOH
Minimum HIGH Level
Output Voltage
VIN = VIH or VIL
|IOUT| ≤ 20 µA
2.0V
2.0
1.9
1.9
4.5V
4.5
4.4
4.4
1.9
V
4.4
V
6.0V
6.0
5.9
5.9
5.9
V
VOL
Maximum LOW Level
Output Voltage
VIN = VIH or VIL
|IOUT| ≤ 4.0 mA
|IOUT| ≤ 5.2 mA
VIN = VIH or VIL
|IOUT| ≤ 20 µA
4.5V
4.2
3.98
3.84
6.0V
5.7
5.48
5.34
2.0V
0
0.1
0.1
4.5V
0
0.1
0.1
3.7
V
5.2
V
0.1
V
0.1
V
6.0V
0
0.1
0.1
0.1
V
IIN
Maximum Input
Current
VIN = VIH or VIL
|IOUT| ≤ 4.0 mA
|IOUT| ≤ 5.2 mA
VIN = VCC or GND
4.5V
0.2
0.26
6.0V
0.2
0.26
6.0V
±0.1
0.33
0.33
±1.0
0.4
V
0.4
V
±1.0
µA
IOZ
Maximum 3-STATE
Strobe = VCC
6.0V
±0.5
±5
±10
µA
Leakage Current
VOUT = VCC or GND
ICC
Maximum Quiescent
VIN = VCC or GND
6.0V
8.0
80
160
µA
Supply Current
IOUT = 0 µA
Note 4: For a power supply of 5V ±10% the worst case output voltages (VOH, and VOL) occur for HC at 4.5V. Thus the 4.5V values should be used when
designing with this supply. Worst case VIH and VIL occur at VCC = 5.5V and 4.5V respectively. (The VIH value at 5.5V is 3.85V.) The worst case leakage cur-
rent (IIN, ICC, and IOZ) occur for CMOS at the higher voltage and so the 6.0V values should be used.
3
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