DataSheet.es    


PDF DM54121 Data sheet ( Hoja de datos )

Número de pieza DM54121
Descripción One-Shot with Clear and Complementary Outputs
Fabricantes National Semiconductor 
Logotipo National Semiconductor Logotipo



Hay una vista previa y un enlace de descarga de DM54121 (archivo pdf) en la parte inferior de esta página.


Total 6 Páginas

No Preview Available ! DM54121 Hoja de datos, Descripción, Manual

June 1989
54121 DM54121 DM74121 One-Shot with
Clear and Complementary Outputs
General Description
The DM54 74121 is a monostable multivibrator featuring
both positive and negative edge triggering with complemen-
tary outputs An internal 2kX timing resistor is provided for
design convenience minimizing component count and lay-
out problems This device can be used with a single external
capacitor Inputs (A) are active-low trigger transition inputs
and input (B) is an active-high transition Schmitt-trigger in-
put that allows jitter-free triggering from inputs with tran-
sition rates as slow as 1 volt second A high immunity to
VCC noise of typically 1 5V is also provided by internal cir-
cuitry at the input stage
To obtain optimum and trouble free operation please read
operating rules and NSC one-shot application notes careful-
ly and observe recommendations
Features
Y Triggered from active-high transition or active-low tran-
sition inputs
Y Variable pulse width from 30 ns to 28 seconds
Y Jitter free Schmitt-trigger input
Y Excellent noise immunity typically 1 2V
Y Stable pulse width up to 90% duty cycle
Y TTL DTL compatible
Y Compensated for VCC and temperature variations
Y Input clamp diodes
Y Alternate Military Aerospace device (54121) is avail-
able Contact a National Semiconductor Sales Office
Distributor for specifications
Functional Description
The basic output pulse width is determined by selection of
an internal resistor RINT or an external resistor (RX) and
capacitor (CX) Once triggered the output pulse width is in-
dependent of further transitions of the inputs and is a func-
tion of the timing components Pulse width can vary from a
few nano-seconds to 28 seconds by choosing appropriate
RX and CX combinations There are three trigger inputs from
the device two negative edge-triggering (A) inputs one pos-
itive edge Schmitt-triggering (B) input
Connection Diagram
Dual-In-Line Package
TL F 6538 – 1
Order Number 54121DMQB 54121FMQB
DM54121J DM54121W or DM74121N
See NS Package Number J14A N14A or W14B
Function Table
Inputs
A1 A2
B
L XH
X LH
XXL
HHX
HvH
vH H
vv H
L Xu
X Lu
H e High Logic Level
L e Low Logic Level
X e Can Be Either Low or High
u e Positive Going Transition
v e Negative Going Transition
e A Positive Pulse
e A Negative Pulse
Outputs
QQ
LH
LH
LH
LH
C1995 National Semiconductor Corporation TL F 6538
RRD-B30M105 Printed in U S A

1 page




DM54121 pdf
Physical Dimensions inches (millimeters)
14-Lead Ceramic Dual-In-Line Package (J)
Order Number 54121DMQB or DM54121J
NS Package Number J14A
14-Lead Molded Dual-In-Line Package (N)
Order Number DM74121N
NS Package Number N14A
5

5 Page










PáginasTotal 6 Páginas
PDF Descargar[ Datasheet DM54121.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
DM54121One-Shot with Clear and Complementary OutputsNational Semiconductor
National Semiconductor
DM54122Retriggerable Resettable MultivibratorNational Semiconductor
National Semiconductor
DM54123Dual Retriggerable One-Shot with Clear and Complementary OutputsNational Semiconductor
National Semiconductor
DM54123DM54123/DM74123 Dual Retrigger 1-Shot w/Clear Complementary Outputs (Rev. A)Texas Instruments
Texas Instruments

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
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,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar