SN74LS173AD 查看數據表（PDF） - Motorola => Freescale
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SN74LS173AD Datasheet PDF : 6 Pages
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SN54 / 74LS173A
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
2.4
3.4
2.4
3.1
V
VCC = MIN, IIN = – 18 mA
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 = 12 mA
V
IOL = 24 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
IOZH
Output Off Current HIGH
20
µA VCC = MAX, VO = 2.7 V
IOZL
Output Off Current LOW
– 20
µA VCC = MAX, VO = 0.4 V
IIH
Input HIGH Current
20
µA VCC = MAX, VIN = 2.7 V
0.1
mA VCC = MAX, VIN = 7.0 V
IIL
Input LOW Current
– 0.4 mA VCC = MAX, VIN = 0.4 V
IOS
Short Circuit Current (Note 1)
– 30
– 130 mA VCC = MAX
ICC
Power Supply Current
30
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
mA VCC = MAX
AC CHARACTERISTICS (TA = 25°C)
Symbol
fMAX
tPLH
tPHL
tPHL
tPZH
tPZL
tPLZ
tPHZ
Parameter
Maximum Input Clock Frequency
Propagation Delay,
Clock to Output
Propagation Delay, MR to Output
Output Enable Time
Output Disable Time
Limits
Min Typ Max
30
50
17
25
22
30
26
35
15
23
18
27
11
17
11
17
Unit
MHz
ns
ns
ns
ns
Test Conditions
VCC = 5.0 V
CL = 45 pF,
RL = 667 Ω
CL = 5.0 pF,
RL = 667 Ω
AC SETUP REQUIREMENTS (TA = 25°C)
Symbol
tW
ts
ts
th
trec
Parameter
Clock or MR Pulse Width
Data Enable Setup Time
Data Setup Time
Hold Time, Any Input
Recovery Time
Limits
Min Typ Max Unit
20
ns
35
ns
17
ns
0
ns
10
ns
Test Conditions
VCC = 5.0 V
FAST AND LS TTL DATA
5-318
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