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PDF MC74AC258 Data sheet ( Hoja de datos )
| Número de pieza | MC74AC258 | |
| Descripción | QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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( DataSheet : www.DataSheet4U.com )
MC74AC258
MC74ACT258
Quad 2ĆInput Multiplexer
with 3ĆState Outputs
The MC74AC258/74ACT258 is a quad 2-input multiplexer with 3-state outputs.
Four bits of data from two sources can be selected using a common data select
input. The four outputs present the selected data in the complement (inverted)
form. The outputs may be switched to a high impedance state with a HIGH on the
common Output Enable (OE) input, allowing the outputs to interface directly with
bus-oriented systems.
• Multiplexer Expansion by Tying Outputs Together
• Inverting 3-State Outputs
• Outputs Source/Sink 24 mA
• ′ACT258 Has TTL Compatible Inputs
VCC OE I0c I1c Zc I0d I1d Zd
16 15 14 13 12 11 10 9
QUAD 2-INPUT
MULTIPLEXER WITH
3-STATE OUTPUTS
N SUFFIX
CASE 648-08
PLASTIC
12345678
S I0a I1a Za I0b I1b Zb GND
PIN NAMES
S
OE
I0a–I0d
I1a–I1d
Za–Zd
Common Data Select Input
3-State Output Enable Input
Data Inputs from Source 0
Data Inputs from Source 1
3-State Multiplexer Outputs
TRUTH TABLE
Output
Enable
Select
Input
OE S
HX
LH
LH
LL
LL
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Data
Inputs
I0 I1
XX
XL
XH
LX
HX
Outputs
Z
Z
H
L
H
L
D SUFFIX
CASE 751B-05
PLASTIC
LOGIC SYMBOL
OE I0a I1a I0b I1b I0c I1c I0d I1d
S
Za Zb Zc Zd
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FACT DATA
5-1
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1 page  
MC74AC258 MC74ACT258
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74AC
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
tPLH
tPHL
tPLH
tPHL
tPZH
Propagation Delay
In to Zn
Propagation Delay
In to Zn
Propagation Delay
S to Zn
Propagation Delay
S to Zn
Output Enable Time
tPZL
Output Enable Time
tPHZ
Output Disable Time
tPLZ
Output Disable Time
* Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
Min Typ Max
3.3 2.0 6.0 9.5
5.0 1.5 4.5 7.5
3.3 2.0 5.0 8.5
5.0 1.5 4.0 6.5
3.3 3.0 7.5 12.0
5.0 2.0 6.0 9.5
3.3 2.5 7.5 11.5
5.0 1.5 5.5 9.0
3.3 2.5 6.0 9.5
5.0 1.5 4.5 7.5
3.3 2.0 5.5 9.0
5.0 1.5 5.5 7.0
3.3 2.5 5.5 10.0
5.0 2.0 5.5 8.5
3.3 2.0 5.5 9.0
5.0 1.5 5.0 7.0
74AC
TA = –40°C
to +85°C
CL = 50 pF
Min Max
1.5 11.0
1.0 8.5
1.5 9.5
1.0 7.0
2.5 14.0
1.5 10.5
2.0 13.0
1.5 10.0
2.0 10.5
1.5 8.5
1.5 10.0
1.0 8.0
2.0 11.0
1.5 9.0
2.0 10.0
1.5 8.0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Fig.
No.
3-5
3-5
3-6
3-6
3-7
3-8
3-7
3-8
FACT DATA
5-5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MC74AC258.PDF ] | |
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