|
|
PDF 54LS123 Data sheet ( Hoja de datos )
| Número de pieza | 54LS123 | |
| Descripción | SN54LS123 | |
| Fabricantes | ETC | |
| Logotipo |  |
|
 1. - Monostable Multivibrator - TI  Hay una vista previa y un enlace de descarga de 54LS123 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
|
No Preview Available !
RETRIGGERABLE MONOSTABLE
MULTIVIBRATORS
These dc triggered multivibrators feature pulse width control by three meth-
ods. The basic pulse width is programmed by selection of external resistance
and capacitance values. The LS122 has an internal timing resistor that allows
the circuits to be used with only an external capacitor. Once triggered, the ba-
sic pulse width may be extended by retriggering the gated low-level-active (A)
or high-level-active (B) inputs, or be reduced by use of the overriding clear.
• Overriding Clear Terminates Output Pulse
• Compensated for VCC and Temperature Variations
• DC Triggered from Active-High or Active-Low Gated Logic Inputs
• Retriggerable for Very Long Output Pulses, up to 100% Duty Cycle
• Internal Timing Resistors on LS122
SN54 / 74LS123 (TOP VIEW)
(SEE NOTES 1 THRU 4)
V CC
1ĂR ext/
C ext
1
C ext
16
15
14
1Q
13
2Q
12
2
CLR
2B
11 10
2A
9
Q
CLR Q
CLR
Q
Q
1 2 3 4 56
78
1A
1B
1
CLR
1Q
2Q
2
C ext
2
R ext/
C ext
GND
SN54 / 74LS122 (TOP VIEW)
(SEE NOTES 1 THRU 4)
V CC
14
R ext/
C ext
NC
13
12
C ext
NC
11 10
R int
9
Q
8
R int
Q
CLR
Q
1
A1
2
A2
NC Ċ NO INTERNAL CONNECTION.
3
B1
4
B2
5
CLR
6
Q
7
GND
NOTES:
1. An external timing capacitor may be connected between Cext and Rext/Cext (positive).
2. To use the internal timing resistor of the LS122, connect Rint to VCC.
3. For improved pulse width accuracy connect an external resistor between Rext/Cext and
VCC with Rint open-circuited.
4. To obtain variable pulse widths, connect an external variable resistance between Rint/Cext
and VCC.
www.DataSheet4U.com
SN54/74LS122
SN54/74LS123
RETRIGGERABLE MONOSTABLE
MULTIVIBRATORS
LOW POWER SCHOTTKY
16
1
16
1
16
1
14
1
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
D SUFFIX
SOIC
CASE 751B-03
J SUFFIX
CERAMIC
CASE 632-08
14
1
14
1
N SUFFIX
PLASTIC
CASE 646-06
D SUFFIX
SOIC
CASE 751A-02
ORDERING INFORMATION
SN54LSXXXJ Ceramic
SN74LSXXXN Plastic
SN74LSXXXD SOIC
FAST AND LS TTL DATA
5-197
1 page  
SN54/74LS122 • SN54/74LS123
www.DataSheet4U.com
P in
V CC
Ω51
V RC
R ext
V CC
C ext
C ext
CLR
B
R ext /
C ext
V CC
Q
1/2 LS123
Q
A
GND
µ0.1
F
P out
Figure 1
P in
V CC
Ω51
V RC
R ext
V CC
C ext
C ext
CLR
R ext /
C ext
B2
LS122
B1
V CC
Q
A2
A1
GND
Q
µ0.1
F
P out
Figure 2
P in
P out
tW
RETRIGGER
Figure 3
10
≤ ≤5K
R ext
260K
1
0.1
0.01
0.001
0.3
0.35
0.4
0.45
K
0.5
0.55
Figure 4
FAST AND LS TTL DATA
5-201
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet 54LS123.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| 54LS122 | Retriggerable Monostable Multivibrators |  Texas Instruments |
| 54LS123 | SN54LS123 | ETC |
| 54LS123 | Retriggerable Monostable Multivibrators | Texas Instruments |
| 54LS125A | Quadruple Bus Buffers With 3-State Outputs (Rev. A) | Texas Instruments |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |