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DM74S257 Arkusz danych(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Numer części DM74S257
Szczegółowy opis  TRI-STATE QUAD 1 OF 2 DATA SELECTORS / MULTIPLEXERS
Download  8 Pages
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Producent  NSC [National Semiconductor (TI)]
Strona internetowa  http://www.national.com
Logo NSC - National Semiconductor (TI)

DM74S257 Arkusz danych(HTML) 4 Page - National Semiconductor (TI)

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’S258 Electrical Characteristics
over recommended operating free air temperature (unless otherwise noted) (Continued)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 1)
IOZH
Off-State Output Current
VCC e Max VO e 24V
with High Level Output
VIH e Min VIL e Max
50
m
A
Voltage Applied
IOZL
Off-State Output Current with
VCC e Max VO e 05V
Low Level Output
VIH e Min VIL e Max
b
50
m
A
Voltage Applied
IOS
Short Circuit
VCC e Max
DM54
b
40
b
100
mA
Output Current
(Note 2)
DM74
b
40
b
100
ICCH
Supply Current with
VCC e Max
36
56
mA
Outputs High
(Note 3)
ICCL
Supply Current with
VCC e Max
52
81
mA
Outputs Low
(Note 3)
ICCZ
Supply Current with
VCC e Max
56
87
mA
Outputs Disabled
(Note 3)
Note 1
All typicals are at VCC e 5V TA e 25 C
Note 2
Not more than one output should be shorted at a time and the duration should not exceed one second
Note 3
ICC is measured with all outputs open and all possible inputs grounded while achieving the stated output conditions
’S258 Switching Characteristics
at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load)
From (Input)
RL e 280X
Symbol
Parameter
To (Output)
CL e 15 pF
CL e 50 pF
Units
Min
Max
Min
Max
tPLH
Propagation Delay Time
Data to
69
ns
Low to High Level Output
Output
tPHL
Propagation Delay Time
Data to
69
ns
High to Low Level Output
Output
tPLH
Propagation Delay Time
Select to
12
15
ns
Low to High Level Output
Output
tPHL
Propagation Delay Time
Select to
12
15
ns
High to Low Level Output
Output
tPZH
Output Enable Time
Output
195
23
ns
to High Level Output
Control to Y
tPZL
Output Enable Time
Output
21
24
ns
to Low Level Output
Control to Y
tPHZ
Output Disable Time
Output
85
ns
to High Level Output (Note 1)
Control to Y
tPLZ
Output Disable Time
Output
14
ns
to Low Level Output (Note 1)
Control to Y
Note 1
CL e 5 pF
4


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