74AC158B [STMICROELECTRONICS]
QUAD 2 CHANNEL MULTIPLEXER INV.; QUAD 2通道多路复用器INV 。
| 型号： | 74AC158B |
| 厂家： | 
ST |
| 描述： | QUAD 2 CHANNEL MULTIPLEXER INV. |
| 文件： | 总9页 (文件大小：84K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
74AC158
QUAD 2 CHANNEL MULTIPLEXER (INV.)
PRELIMINARY DATA
■
■
HIGH SPEED: tPD = 4 ns (TYP.) at VCC = 5V
LOW POWER DISSIPATION:
ICC = 8 µA (MAX.) at TA = 25 oC
HIGH NOISE IMMUNITY:
■
■
■
■
■
■
■
VNIH = VNIL = 28% VCC (MIN.)
50Ω TRANSMISSION LINE DRIVING
CAPABILITY
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL =24 mA (MIN)
BALANCED PROPAGATION DELAYS:
tPLH tPHL
OPERATING VOLTAGE RANGE:
B
M
(Plastic Package)
(Micro Package)
ORDER CODES :
74AC158B
74AC158M
It consists of four 2-input digital multiplexers with
common select and strobe inputs. It is an
inverting multiplexer. When the STROBE input is
held high selection of data is inhibit and all the
outputs become high. The SELECT decoding
determines whether the A or B inputs get routed
to their corresponding Y outputs.
VCC (OPR) = 2V to 6V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 158
IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The AC158 is an high-speed CMOS QUAD
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
2-CHANNEL
MULTIPLEXER
(INVERTING)
fabricated with sub-micron silicon gate and
double-layer metal wiring C2MOS technology. It is
ideal for low power applications maintaining high
speed operation similar to equivalent Bipolar
Schottky TTL.
PIN CONNECTION AND IEC LOGIC SYMBOLS
1/9
May 1997
74AC158
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No
1
SYMBOL NAME AND FUNCTION
SELECT
1A to 4A
Common Data Select Input
2,5, 11, 14
Data Inputs From
Source A
3,6, 10, 13
1B to 4B
Data Inputs From
Source B
4,7, 9, 12
1Y to 4Y
Multiplexer Outputs
15
8
STROBE Strobe Input
GND
VCC
Ground (0V)
16
Positive Supply Voltage
TRUTH TABLE
INPUT
OUTPUT
STROBE
SELECT
A
X
L
B
X
X
X
L
Y
H
H
L
H
L
L
L
L
X
L
L
H
X
X
H
H
H
L
H
LOGIC DIAGRAM
2/9
74AC158
ABSOLUTE MAXIMUM RATING
Symbol
Parameter
Value
-0.5 to +7
-0.5 to VCC +0.5
-0.5 to VCC +0.5
± 20
Unit
V
VCC
VI
Supply Voltage
DC Input Voltage
V
VO
IIK
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Current
V
mA
mA
mA
mA
oC
IOK
IO
± 20
± 50
ICC or IGND DC VCC or Ground Current
± 200
Tstg
TL
Storage Temperature
-65 to +150
Lead Temperature (10 sec)
300
oC
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
Parameter
Value
2 to 6
Unit
V
Supply Voltage
Input Voltage
Output Voltage
VI
0 to VCC
0 to VCC
-40 to +85
8
V
VO
V
oC
Top
Operating Temperature:
dt/dv
Input Rise and Fall Time VCC = 3.0, 4.5 or 5.5 V(note 1)
ns/V
1) VIN from30% to 70% of VCC
3/9
74AC158
DC SPECIFICATIONS
Symbol
Parameter
Test Conditions
Value
TA = 25 oC
Min. Typ. Max. Min. Max.
Unit
VCC
(V)
-40 to 85 oC
VIH
High Level Input Voltage
Low Level Input Voltage
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
5.5
5.5
VO =0.1 V or
2.1
1.5
2.1
VCC -0.1 V
V
V
3.15
3.85
2.25
2.75
1.5
3.15
3.85
V
IL
VO =0.1 V or
VCC -0.1 V
0.9
0.9
1.35
1.65
2.25
2.75
2.99
4.49
5.49
1.35
1.65
VOH
High Level Output
Voltage
IO=-50 µA
2.9
4.4
2.9
4.4
VI(*)
IH or
VIL
=
IO=-50 µA
IO=-50 µA
IO=-12 mA
IO=-24 mA
IO=-24 mA
IO=50 µA
IO=50 µA
IO=50 µA
IO=12mA
IO=24mA
IO=24mA
5.4
5.4
V
V
V
2.56
3.86
4.86
2.46
3.76
4.76
VOL
Low Level Output
Voltage
0.002
0.001
0.001
0.1
0.1
0.1
0.1
VI(*)
IH or
VIL
=
0.1
0.1
V
0.36
0.36
0.36
±0.1
8
0.44
0.44
0.44
±1
II
Input Leakage Current
VI =VCC or GND
VI =VCC or GND
µA
µA
ICC
Quiescent Supply
Current
80
IOLD
IOHD
Dynamic Output Current
(note 1, 2)
5.5
VOLD =1.65 V max
VOHD = 3.85 V min
75
mA
mA
-75
1) Maximum test duration 2ms, one output loaded at time
2) Incident wave switching is guaranteed on transmission lines with impedances as low as 50 Ω.
4/9
74AC158
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr = tf =3 ns)
Symbol
Parameter
Test Condition
Value
TA = 25 oC
Min. Typ. Max. Min. Max.
Unit
VCC
(V)
-40 to 85 oC
(*)
tPLH
tPHL
Propagation Delay Time
SELECT to Y
3.3
1.5
1.5
1.5
1.5
1.5
1.5
7.0
5.0
7.0
5.5
5.0
4.0
11.5
9.0
1.5
1.5
1.5
1.5
1.5
1.5
12.5
10.0
12.0
9.5
ns
ns
ns
(**)
5.0
(*)
tPLH
tPHL
Propagation Delay Time
STROBE to Y
3.3
11.0
8.5
(**)
5.0
(*)
tPLH
tPHL
Propagation Delay Time
A, B to Y
3.3
8.0
8.5
(**)
5.0
7.0
7.5
(*) Voltage range is 3.3V ± 0.3V
(**) Voltage range is5V ± 0.5V
CAPACITIVE CHARACTERISTICS
Symbol
Parameter
Test Conditions
Value
TA = 25 oC
Unit
VCC
-40 to 85 oC
(V)
Min. Typ. Max. Min. Max.
CIN
Input Capacitance
5.0
5.0
4
pF
pF
CPD
Power Dissipation
TBD
Capacitance (note 1)
1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to
Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD • VCC • fIN +ICC/n (per circuit)
TEST CIRCUIT
5/9
74AC158
WAVEFORM 1: PROPAGATION DELAYS FOR NON-INVERTING CONDITIONS
WAVEFORM 2: PROPAGATION DELAYS FOR INVERTING CONDITIONS
6/9
74AC158
Plastic DIP-16 (0.25) MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
0.51
0.77
TYP.
MAX.
MIN.
0.020
0.030
MAX.
a1
B
b
1.65
0.065
0.5
0.020
0.010
b1
D
E
e
0.25
20
0.787
8.5
2.54
17.78
0.335
0.100
0.700
e3
F
7.1
5.1
0.280
0.201
I
L
3.3
0.130
Z
1.27
0.050
P001C
7/9
74AC158
SO-16 MECHANICAL DATA
mm
inch
TYP.
DIM.
MIN.
TYP.
MAX.
1.75
0.2
MIN.
MAX.
0.068
0.007
0.064
0.018
0.010
A
a1
a2
b
0.1
0.004
1.65
0.46
0.25
0.35
0.19
0.013
0.007
b1
C
0.5
0.019
c1
D
45 (typ.)
9.8
5.8
10
0.385
0.228
0.393
0.244
E
6.2
e
1.27
8.89
0.050
0.350
e3
F
3.8
4.6
0.5
4.0
5.3
0.149
0.181
0.019
0.157
0.208
0.050
0.024
G
L
1.27
0.62
M
S
8 (max.)
P013H
8/9
74AC158
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No
license is granted by implication or otherwise underany patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronics productsare notauthorized for use as criticalcomponents in life supportdevices or systems withoutexpress
written approval of SGS-THOMSON Microelectonics.
1997 SGS-THOMSON Microelectronics - Printedin Italy - All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
Australia- Brazil - Canada - China - France - Germany - Hong Kong - Italy- Japan- Korea - Malaysia- Malta- Morocco - TheNetherlands -
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.
9/9
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