74ACT158SC PDF даташит
Спецификация 74ACT158SC изготовлена «Fairchild Semiconductor» и имеет функцию, называемую «Quad 2-Input Multiplexer». |
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Детали детали
Номер произв | 74ACT158SC |
Описание | Quad 2-Input Multiplexer |
Производители | Fairchild Semiconductor |
логотип |
8 Pages
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November 1988
Revised November 1999
74ACT158
Quad 2-Input Multiplexer
General Description
The ACT158 is a high-speed quad 2-input multiplexer. It
selects four bits of data from two sources using the com-
mon Select and Enable inputs. The four buffered outputs
present the selected data in the inverted form. The ACT158
can also be used as a function generator.
Features
s ICC reduced by 50%
s Outputs source/sink 24 mA
s TTL-compatible inputs
Ordering Code:
Order Number Package Number
Package Description
74ACT158SC
74ACT158PC
74ACT158MTC
74ACT158SJ
M16A
M16D
MTC16
N16E
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Logic Symbols
Connection Diagram
IEE/IEC
Pin Descriptions
Pin Names
Description
I0a–I0d
I1a–I1d
E
Source 0 Data Inputs
Source 1 Data Inputs
Enable Input
S Select Input
Za–Zd
Inverted Outputs
FACT is a trademark of Fairchild Semiconductor Corporation.
© 1999 Fairchild Semiconductor Corporation DS009930
www.fairchildsemi.com
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Functional Description
The ACT158 quad 2-input multiplexer selects four bits of
data from two sources under the control of a common
Select input (S) and presents the data in inverted form at
the four outputs. The Enable input (E) is active-LOW. When
E is HIGH, all of the outputs (Z) are forced HIGH regard-
less of all other inputs. The ACT158 is the logic implemen-
tation of a 4-pole, 2-position switch where the position of
the switch is determined by the logic levels supplied to the
Select input.
A common use of the ACT158 is the moving of data from
two groups of registers to four common output busses. The
particular register from which the data comes is determined
by the state of the Select input. A less obvious use is as a
function generator. The ACT158 can generate four func-
tions of two variables with one variable common. This is
useful for implementing gating functions.
Logic Diagram
Truth Table
Inputs
ES
HX
I0
X
LL
L
LL
H
LH
X
LH
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
X
Outputs
I1 Z
XH
XH
XL
LH
HL
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
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Absolute Maximum Ratings(Note 1)
Supply Voltage (VCC)
DC Input Diode Current (IIK)
VI = −0.5V
VI = VCC + 0.5V
DC Input Voltage (VI)
DC Output Diode Current (IOK)
VO = −0.5V
VO = VCC + 0.5V
DC Output Voltage (VO)
DC Output Source
or Sink Current (IO)
DC VCC or Ground Current
per Output Pin (ICC or IGND)
Storage Temperature (TSTG)
Junction Temperature (TJ)
−0.5V to +7.0V
−20 mA
+20 mA
−0.5V to VCC + 0.5V
−20 mA
+20 mA
−0.5V to VCC + 0.5V
±50 mA
±50 mA
−65°C to +150°C
140°C
Recommended Operating
Conditions
Supply Voltage (VCC)
Input Voltage (VI)
Output Voltage (VO)
Operating Temperature (TA)
Minimum Input Edge Rate (∆V/∆t)
VIN from 0.8V to 2.0V
VCC @ 4.5V, 5.5V
4.5V to 5.5V
0V to VCC
0V to VCC
−40°C to +85°C
125 mV/ns
Note 1: Absolute maximum ratings are those values beyond which damage
to the device may occur. The databook specifications should be met, with-
out exception, to ensure that the system design is reliable over its power
supply, temperature, and output/input loading variable. Fairchild does not
recommend operation of FACT circuits outside databook specifications.
DC Electrical Characteristics
Symbol
Parameter
VIH Minimum HIGH Level
Input Voltage
VIL Maximum LOW Level
Input Voltage
VOH Minimum HIGH Level
Output Voltage
VCC
TA = +25°C
TA = −40°C to +85°C
(V) Typ
Guaranteed Limits
4.5 1.5
2.0
2.0
5.5 1.5
2.0
2.0
4.5 1.5
0.8
0.8
5.5 1.5
0.8
0.8
4.5 4.49
4.4
4.4
5.5 5.49
5.4
5.4
VOL Maximum LOW Level
Output Voltage
4.5
5.5
4.5 0.001
5.5 0.001
3.86
4.86
0.1
0.1
3.76
4.76
0.1
0.1
4.5 0.36
5.5 0.36
IIN Maximum Input
Leakage Current
5.5
±0.1
ICCT
IOLD
IOHD
ICC
Maximum
ICC/Input
Minimum Dynamic
Output Current (Note 3)
Maximum Quiescent
Supply Current
5.5 0.6
5.5
5.5
5.5
4.0
Note 2: All outputs loaded; thresholds on input associated with output under test.
Note 3: Maximum test duration 2.0 ms, one output loaded at a time.
0.44
0.44
±1.0
1.5
75
−75
40.0
Units
Conditions
V VOUT = 0.1V
or VCC − 0.1V
V VOUT = 0.1V
or VCC − 0.1V
V IOUT = −50 µA
VIN = VIL or VIH
V IOH = −24 mA
IOH = −24 mA (Note 2)
V IOUT = 50 µA
VIN = VIL or VIH
V IOL = 24 mA
IOL = 24 mA (Note 2)
µA VI = VCC, GND
mA VI = VCC − 2.1V
mA VOLD = 1.65V Max
mA VOHD = 3.85V Min
µA VIN = VCC
or GND
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Номер в каталоге | Описание | Производители |
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