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PDF M74HC157 Data sheet ( Hoja de datos )
| Número de pieza | M74HC157 | |
| Descripción | HC158 QUAD 2 CHANNEL MULTIPLEXER INV. HC157 QUAD 2 CHANNEL MULTIPLEXER | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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M54HC157/158
M74HC157/158
HC157 QUAD 2 CHANNEL MULTIPLEXER
HC158 QUAD 2 CHANNEL MULTIPLEXER (INV.)
. HIGH SPEED
tPD = 10 ns (TYP.) AT VCC = 5 V
. LOW POWER DISSIPATION
ICC = 4 µA (MAX.) AT TA = 25 °C
. HIGH NOISE IMMUNITY
VNIH = VNIL = 28 % VCC (MIN.)
. OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
. SYMMETRICAL OUTPUT IMPEDANCE
IOH = IOL = 4 mA (MIN.)
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
. PIN AND FUNCTION COMPATIBLE
WITH 54/74LS157/158
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCXXXF1R M74HCXXXM1R
M74HCXXXB1R M74HCXXXC1R
PIN CONNECTIONS (top view)
HC157
DESCRIPTION
The M54/74HC157 and the M54/74HC158 are high
speed CMOS QUAD 2-CHANNEL MULTI-
PLEXER’s fabricated with silicon gate C2MOS tech-
nology. They achieve the high speed operation
similar to equivalent LSTTL while maintaining the
CMOS low power dissipation.
These devices consist of four 2-input digital multi-
plexers with common select and strobe inputs. The
HC158 is an inverting multiplexer while the HC157
is a non-inverting multiplexer. When the STROBE
input is held High, selection of data is inhibited and
all the outputs become Low in the M74HC157 and
High in the M74HC158. The SELECT decoding
determines whether the A or B inputs get routed to
their corresponding Y outputs. All inputs are
equipped with protection circuits against static dis-
charge and transient excess voltage.
February 1993
HC158
NC =
No Internal
Connection
1/11
1 page  
M54/M74HC157 M54/M74HC158
DC SPECIFICATIONS
Symbol
Parameter
VIH High Level Input
Voltage
VIL Low Level Input
Voltage
VOH High Level
Output Voltage
VOL Low Level Output
Voltage
II * Input Leakage
Current
ICC Quiescent Supply
Current
* Applicable only to DIR, G, G input
Test Conditions
VCC
(V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
VI =
VIH
IO=-20 µA
6.0 or
4.5 VIL IO=-4.0 mA
6.0 IO=-5.2 mA
2.0
4.5
VI =
VIH
IO= 20 µA
6.0 or
4.5 VIL IO= 4.0 mA
6.0 IO= 5.2 mA
6.0 VI = VCC or GND
TA = 25 oC
54HC and 74HC
Min. Typ. Max.
1.5
3.15
4.2
0.5
1.35
1.8
1.9 2.0
4.4 4.5
5.9 6.0
4.18 4.31
5.68 5.8
0.0 0.1
0.0 0.1
0.0 0.1
0.17 0.26
0.18 0.26
±0.1
Value
-40 to 85 oC
74HC
Min. Max.
1.5
3.15
4.2
0.5
1.35
1.8
1.9
4.4
5.9
4.13
5.63
0.1
0.1
0.1
0.33
0.33
±1
-55 to 125 oC
54HC
Min. Max.
1.5
3.15
4.2
0.5
1.35
1.8
1.9
4.4
5.9
4.10
5.60
0.1
0.1
0.1
0.40
0.40
±1
6.0 VI = VCC or GND
IO =0
4 40 80
Unit
V
V
V
V
µA
µA
5/11
5 Page 
M54/M74HC157 M54/M74HC158
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 under any 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 products are not authorized for use ascritical components in life support devices or systems without express
written approval of SGS-THOMSON Microelectonics.
© 1994 SGS-THOMSON Microelectronics - All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands -
Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A
11/11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet M74HC157.PDF ] | |
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