SN74LS299DW Просмотр технического описания (PDF) - ON Semiconductor
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SN74LS299DW Datasheet PDF : 8 Pages
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SN74LS299
AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V)
Limits
Symbol
Parameter
Min Typ Max
fMAX
Maximum Clock Frequency
25
35
tPHL
tPLH
Propagation Delay, Clock
to Q0 or Q7
26
39
22
33
tPHL
Propagation Delay, Clear
to Q0 or Q7
27
40
tPHL
tPLH
Propagation Delay, Clock
to I/O0–I/O7
26
39
17
25
tPHL
Propagation Delay, Clear
to I/O0–I/O7
26
40
tPZH
tPZL
Output Enable Time
13
21
19
30
tPHZ
tPLZ
Output Disable Time
10
15
10
15
Unit
MHz
ns
ns
ns
ns
ns
ns
AC SETUP REQUIREMENTS (TA = 25°C, VCC = 5.0 V)
Limits
Symbol
Parameter
Min Typ Max Unit
tW
Clock Pulse Width HIGH
25
ns
tW
Clock Pulse Width LOW
13
ns
tW
Clear Pulse Width LOW
20
ns
ts
Data Setup Time
20
ns
ts
Select Setup Time
35
ns
th
Data Hold Time
0
ns
th
Select Hold Time
10
ns
trec
Recovery Time
20
ns
Test Conditions
CL = 15 pF
CL = 45 pF,
RL = 667 Ω
CL = 5.0 pF
Test Conditions
VCC = 5.0 V
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