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參數資料
| 型號： | MC74F251N |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | Processor Supervisory Circuits 5-SOT-23 -40 to 85 |
| 中文描述： | F/FAST SERIES, 8 LINE TO 1 LINE MULTIPLEXER, COMPLEMENTARY OUTPUT, PDIP16 |
| 封裝： | 648-08 |
| 文件頁數： | 3/3頁 |
| 文件大小： | 68K |
| 代理商： | MC74F251N |
4-119
FAST AND LS TTL DATA
MC54/74F251
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
(unless otherwise specified)
Limits
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
VIH
VIL
VIK
VOH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage
Input LOW Voltage
0.8
V
Guaranteed Input LOW Voltage
Input Clamp Diode Voltage
–1.2
V
IIN = –18 mA
IOH = –3.0 mA
IOH = –3.0 mA
IOL = 24 mA
VOUT = 2.7 V
VOUT = 0.5 V
VIN = 2.7 V
VIN = 7.0 V
VIN = 0.5 V
VOUT = 0 V
VCC = MIN
VCC = 4.50 V
VCC = 4.75 V
VCC = MIN
VCC = MAX
VCC = MAX
VCC = MAX
Output HIGH Voltage
54, 74
2.4
3.4
V
74
2.7
3.4
V
VOL
IOZH
IOZL
IIH
Output LOW Voltage
0.35
0.5
V
Output Off Current — HIGH
50
μ
A
Output Off Current — LOW
–50
μ
A
Input HIGH Current
20
μ
A
100
μ
A
IIL
IOS
Input LOW Current
–0.6
mA
VCC = MAX
VCC = MAX
Output Short Circuit Current
(Note 2)
–60
–150
mA
ICC
Power Supply Current
15
22
mA
In, Sn = 4.5 V
OE = GND
VCC = MAX
16
24
OE, In = 4.5 V
VCC = MAX
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under guaranteed operating ranges.
2. Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS
54/74F
54F
74F
TA = +25
°
C
VCC = +5.0 V
CL = 50 pF
Min
TA = -55
°
Cto +125
°
C
VCC = 5.0 V
±
10%
CL = 50 pF
Min
TA = 0
°
C to 70
°
C
VCC = 5.0 V
±
10%
CL = 50 pF
Min
Symbol
Parameter
Max
Max
Max
Unit
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPZH
tPZL
tPHZ
tPLZ
Propagation Delay
4.0
8.0
3.5
9.5
4.0
9.0
ns
Sn to Zn
Propagation Delay
3.2
7.5
3.2
9.5
3.2
8.5
4.5
13
3.5
16.5
4.5
14
ns
Sn to Zn
Propagation Delay
4.5
9.0
3.0
10.5
4.0
10.5
3.0
5.7
2.5
8.0
3.0
7.0
ns
In to Z
Propagation Delay
1.5
4.0
1.5
6.0
1.5
5.0
4.0
9.5
3.5
11.5
4.0
10.5
ns
In to Z
Output Enable Time
3.0
6.5
3.0
7.5
3.0
7.5
3.0
7.0
3.0
9.5
3.0
8.0
ns
OE to Z
3.0
8.5
3.0
10.5
3.0
9.5
Output Disable Time
3.0
6.5
3.0
8.5
3.0
7.5
ns
OE to Z
2.0
4.5
2.0
8.0
2.0
5.5
Output Enable Time
4.0
9.0
4.0
10
4.0
10
ns
OE to Z
3.5
8.0
3.5
10
3.5
9.0
Output Disable Time
3.0
6.0
3.0
7.0
3.0
7.0
ns
OE to Z
2.0
4.5
2.0
8.0
2.0
5.5
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