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54LS163A View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
54LS163A Synchronous 4-Bit Binary Counters National-Semiconductor
National ->Texas Instruments National-Semiconductor
54LS163A Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
’LS163 Switching Characteristics
at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load) (Continued)
Symbol
Parameter
From (Input)
To (Output)
RL e 2 kX
CL e 15 pF
CL e 50 pF
Min
Max
Min
Max
tPLH
Propagation Delay Time
Clock to Any Q
24
30
Low to High Level Output
(Load Low)
tPHL
Propagation Delay Time
Clock to Any Q
27
38
High to Low Level Output
(Load Low)
tPLH
Propagation Delay Time
Enable T to
14
27
Low to High Level Output
Ripple Carry
tPHL
Propagation Delay Time
Enable T to
15
27
High to Low Level Output
Ripple Carry
tPHL
Propagation Delay Time
Clear to Any Q
28
45
High to Low Level Output
(Note 1)
Note 1 The propagation delay clear to output is measured from the clock input transition
Logic Diagram
LS163A
Units
ns
ns
ns
ns
ns
The LS161A is similar however the clear buffer is connected directly to the flip flops
6
TL F 6397 – 2
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