MC74F253D 查看數據表（PDF） - Motorola => Freescale
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MC74F253D Datasheet PDF : 3 Pages
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MC54/74F253
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
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH Voltage
Output LOW Voltage
Output Off Current — HIGH
Output Off Current — LOW
Input HIGH Current
2.0
54, 74 2.4
74 2.7
Input LOW Current
Output Short Circuit
–60
Current (Note 2)
V
Guaranteed Input HIGH Voltage
0.8
V
Guaranteed Input LOW Voltage
–1.2
V
IIN = –18 mA
V
IOH = –3.0 mA
V
IOH = –3.0 mA
0.5
V
IOL = 24 mA
50
µA
VOUT = 2.7 V
–50
µA
VOUT = 0.5 V
20
µA
VIN = 2.7 V
100
µA
VIN = 7.0 V
–0.6
mA
VIN = 0.5 V
–150
mA
VOUT = 0 V
VCC = MIN
VCC = 4.50 V
VCC = 4.75 V
VCC = MIN
VCC = MAX
VCC = MAX
VCC = MAX
VCC = MAX
VCC = MAX
Power Supply Current
Total, Output HIGH
ICC
Total, Output LOW
Total at HIGH-Z
OEn = GND
16
IO = 4.5 V; Sn, I1 – I3 = GND
23
mA
In, Sn, OEn = GND
VCC = MAX
23
OEn = 4.5 V, VCC = MAX
In, Sn = GND
AC CHARACTERISTICS
Symbol
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Parameter
Propagation Delay
Sn to Zn
Propagation Delay
In to Zn
Output Enable Time
Output Disable Time
54/74F
54F
74F
TA = +25°C
TA = -55°C to +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
4.5
11.5
3.5
15
4.5
13.5
ns
3.0
9.0
2.5
11
3.0
10
3.0
7.0
2.5
9.0
3.0
8.0
ns
2.5
6.0
2.5
8.0
2.5
7.0
3.0
8.0
2.5
10
3.0
9.0
ns
3.0
8.0
2.5
10
3.0
9.0
2.0
5.0
2.0
6.5
2.0
6.0
ns
2.0
6.0
2.0
8.0
2.0
7.0
FAST AND LS TTL DATA
4-122
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