SN74LS669D 查看數據表（PDF） - Motorola => Freescale
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SN74LS669D Datasheet PDF : 6 Pages
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SN54 / 74LS669
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
Min Typ Max Unit
Test Conditions
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
54
VIL
Input LOW Voltage
74
0.7
Guaranteed Input LOW Voltage for
0.8
V
All Inputs
VIK
VOH
Input Clamp Diode Voltage
54
Output HIGH Voltage
74
– 0.65 – 1.5
V
VCC = MIN, IIN = – 18 mA
2.5
3.5
2.7
3.5
V
VCC = MIN, IOH = MAX, VIN = VIH
V
or VIL per Truth Table
VOL
Output LOW Voltage
54, 74
74
0.25 0.4
0.35 0.5
V
IOL = 4.0 mA
VCC = VCC MIN,
VIN = VIL or VIH
V
IOL = 8.0 mA
per Truth Table
Others
Enable T
IIH
Input HIGH Current
Others
Enable T
20
µA
VCC = MAX, VIN = 2.7 V
40
µA
0.1
mA
VCC = MAX, VIN = 7.0 V
0.2
mA
Others
IIL
Input LOW Current
Enable T
–0.4 mA
VCC = MAX, VIN = 0.4 V
–0.8 mA
IOS
Short Circuit Current (Note 1)
– 20
– 100 mA VCC = MAX
ICC
Power Supply Current
34
mA VCC = MAX
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V)
Limits
Symbol
Parameter
Min Typ Max
fMAX
Maximum Clock Frequency
25
32
tPLH
tPHL
Propagation Delay,
Clock to RCO
26
40
40
60
tPLH
tPHL
Propagation Delay,
Clock to Any Q
18
27
18
27
tPLH
tPHL
Enable to RCO
11
17
29
45
tPLH
tPHL
U/D to RCO
22
35
26
40
Unit
MHz
ns
ns
ns
ns
Test Conditions
CL = 15 pF
AC SETUP REQUIREMENTS (TA = 25°C)
Symbol
tW
ts
ts
ts
ts
th
Parameter
Clock Pulse Width
Data Setup Time
Enable Setup Time
Load Setup Time
U/D Setup Time
Hold Time, Any Input
Limits
Min Typ Max Unit
20
ns
20
ns
35
ns
25
ns
30
ns
0
ns
Test Conditions
VCC = 5.0 V
FAST AND LS TTL DATA
5-593
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