MC74F251N 查看數據表（PDF） - Motorola => Freescale
零件编号
产品描述 (功能)
生产厂家
MC74F251N Datasheet PDF : 3 Pages
| |||
MC54/74F251
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
VIH
VIL
VIK
VOH
VOL
IOZH
IOZL
IIH
IIL
IOS
Input HIGH Voltage
2.0
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH Voltage
54, 74
2.4
74
2.7
Output LOW Voltage
Output Off Current — HIGH
Output Off Current — LOW
Input HIGH Current
Input LOW Current
Output Short Circuit Current
–60
(Note 2)
0.8
–1.2
3.4
3.4
0.35
0.5
50
–50
20
100
–0.6
–150
V
Guaranteed Input HIGH Voltage
V
Guaranteed Input LOW Voltage
V
IIN = –18 mA
VCC = MIN
V
IOH = –3.0 mA VCC = 4.50 V
V
IOH = –3.0 mA VCC = 4.75 V
V
IOL = 24 mA
VCC = MIN
µA
VOUT = 2.7 V
VCC = MAX
µA
VOUT = 0.5 V
VCC = MAX
µA
VIN = 2.7 V
VCC = MAX
µA
VIN = 7.0 V
mA
VIN = 0.5 V
VCC = MAX
mA
VOUT = 0 V
VCC = MAX
ICC
Power Supply Current
15
22
mA
16
24
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.
In, Sn = 4.5 V
OE = GND
OE, In = 4.5 V
VCC = MAX
VCC = MAX
AC CHARACTERISTICS
Symbol
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPZH
tPZL
tPHZ
tPLZ
Parameter
Propagation Delay
Sn to Zn
Propagation Delay
Sn to Zn
Propagation Delay
In to Z
Propagation Delay
In to Z
Output Enable Time
OE to Z
Output Disable Time
OE to Z
Output Enable Time
OE to Z
Output Disable Time
OE to Z
54/74F
54F
74F
TA = +25°C
TA = -55 °Cto +125°C TA = 0°C to 70°C
VCC = +5.0 V
VCC = 5.0 V ±10% VCC = 5.0 V ± 10%
CL = 50 pF
CL = 50 pF
CL = 50 pF
Min
Max
Min
Max
Min
Max
Unit
4.0
8.0
3.5
9.5
4.0
9.0
ns
3.2
7.5
3.2
9.5
3.2
8.5
4.5
13
3.5
16.5
4.5
14
ns
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
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
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
3.0
8.5
3.0
10.5
3.0
9.5
3.0
6.5
3.0
8.5
3.0
7.5
ns
2.0
4.5
2.0
8.0
2.0
5.5
4.0
9.0
4.0
10
4.0
10
ns
3.5
8.0
3.5
10
3.5
9.0
3.0
6.0
3.0
7.0
3.0
7.0
ns
2.0
4.5
2.0
8.0
2.0
5.5
FAST AND LS TTL DATA
4-119
Share Link: 