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54LS173FMQB View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
54LS173FMQB TRI-STATE 4-Bit D-Type Register National-Semiconductor
National ->Texas Instruments National-Semiconductor
54LS173FMQB Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
Switching Characteristics at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load)
54LS
DM74LS
Symbol
Parameter
From (Input)
To (Output)
CL e 50 pF
Min
Max
CL e 50 pF
RL e 667X
Min
Max
Units
fMAX
Maximum Clock
Frequency
30
20
ns
tPLH
Propagation Delay Time
Low to High Level Output
Clock to
Output
28
25
ns
tPHL
Propagation Delay Time
High to Low Level Output
Clock to
Output
28
28
ns
tPHL
Propagation Delay Time
High to Low Level Output
Clear to
Output
30
30
ns
tPZH
Output Enable Time
Output Control
23
to High Level Output
(M or N) to Any Q
26
ns
tPZL
Output Enable Time
Output Control
28
to Low Level Output
(M or N) to Any Q
24
ns
tPHZ
Output Disable Time from
Output Control
17
High Level Output (Note 7)
(M or N) to Any Q
17
ns
tPLZ
Output Disable Time from
Output Control
23
Low Level Output (Note 7)
(M or N) to Any Q
25
ns
Note 4 All typicals are at VCC e 5V TA e 25 C
Note 5 Not more than one output should be shorted at a time and the duration should not exceed one second
Note 6 ICC is measured with all outputs open Clear grounded after a momentary 4 5V N G1 G2 and all data inputs grounded and the CLOCK and M input at
4 5V
Note 7 CL e 5 pF
3
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