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DM74ALS169 数据表(PDF) 5 Page - Fairchild Semiconductor

部件名 DM74ALS169
功能描述  Synchronous Four-Bit Up/Down Counters
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制造商  FAIRCHILD [Fairchild Semiconductor]
网页  http://www.fairchildsemi.com
标志 FAIRCHILD - Fairchild Semiconductor

DM74ALS169 数据表(HTML) 5 Page - Fairchild Semiconductor

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Electrical Characteristics
over recommended operating free air temperature range. All typical values are measured at VCC = 5V, TA = 25°C
Switching Characteristics
over recommended operating free air temperature range
Note 3: Propagation delay time from up/down to ripple carry must be measured with the counter at either a minimum or a maximum count. As the logic level
of the up/down input is changed, the ripple carry output will follow. If the count is minimum (0), the ripple carry output transition will be in phase. If the count is
maximum, the ripple carry output will be out of phase.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VIK
Input Clamp Voltage
VCC = 4.5V, II = −18 mA
−1.5
V
VOH
HIGH Level
IOH = −0.4 mA
VCC − 2V
Output Voltage
VCC = 4.5V to 5.5V
VOL
LOW Level
VCC = 4.5V
IOL = 8 mA
0.35
0.5
V
Output Voltage
II
Input Current @ Max
VCC = 5.5V, VIH = 7V
0.1
mA
Input Voltage
IIH
HIGH Level Input Current
VCC = 5.5V, VIH = 2.7V
20
µA
IIL
LOW Level Input Current
VCC = 5.5V, VIL = 0.4V
−0.2
mA
IO
Output Drive Current
VCC = 5.5V, VO = 2.25V
−30
−112
mA
ICC
Supply Current
VCC = 5.5V
15
25
mA
Symbol
Parameter
Conditions
From
To
Min
Max
Units
fMAX
Maximum Clock Frequency
40
MHz
tPLH
Propagation Delay Time
VCC = 4.5V to 5.5V
Clock
Ripple Carry
3
20
ns
LOW-to-HIGH Level Output
RL = 500Ω
tPHL
Propagation Delay Time
CL = 50 pF
Clock
Ripple Carry
6
20
ns
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time
Clock
Any Q
2
15
ns
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
Clock
Any Q
5
20
ns
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time
En T
Ripple Carry
2
13
ns
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
En T
Ripple Carry
3
16
ns
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time
U/D (Note 3)
Ripple Carry
5
19
ns
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
U/D (Note 3)
Ripple Carry
5
19
ns
HIGH-to-LOW Level Output


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