DM74123N Fairchild Semiconductor, DM74123N Datasheet
DM74123N
Manufacturer Part Number
DM74123N
Description
IC MULTIVIBRATOR MONO DUAL 16DIP
Manufacturer
Fairchild Semiconductor
Series
7400r
Datasheet
1.DM74123N.pdf
(5 pages)
Specifications of DM74123N
Logic Type
Monostable
Independent Circuits
2
Schmitt Trigger Input
No
Current - Output High, Low
800µA, 16mA
Voltage - Supply
4.75 V ~ 5.25 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
16-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Propagation Delay
-
Other names
74123
74123N
74123N
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© 2001 Fairchild Semiconductor Corporation
DM74123N
DM74123
Dual Retriggerable One-Shot
with Clear and Complementary Outputs
General Description
The DM74123 is a dual retriggerable monostable multi-
vibrator capable of generating output pulses from a few
nano-seconds to extremely long duration up to 100% duty
cycle. Each device has three inputs permitting the choice of
either leading-edge or trailing edge triggering. Pin (A) is an
active-LOW transition trigger input and pin (B) is an active-
HIGH transition trigger input. A LOW at the clear (CLR)
input terminates the output pulse: which also inhibits trig-
gering. An internal connection from CLR to the input gate
makes it possible to trigger the circuit by a positive-going
signal on CLR as shown in the Truth Table.
To obtain the best and trouble free operation from this
device please read the Operating Rules as well as the
One–Shot Application Notes carefully and observe recom-
mendations.
Ordering Code:
Connection Diagram
Functional Description
The basic output pulse width is determined by selection of
an external resistor (R
gered, the basic pulse width may be extended by retrigger-
ing the gated active-LOW transition or active-HIGH
transition inputs or be reduced by use of the active-LOW
Order Number
Package Number
X
) and capacitor (C
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
X
). Once trig-
DS006539
Features
Triggering Truth Table
H
L
X
transition clear input. Retriggering to 100% duty cycle is
possible by application of an input pulse train whose cycle
time is shorter than the output cycle time such that a con-
tinuous “HIGH” logic state is maintained at the “Q” output.
DC triggered from active-HIGH transition or active-LOW
transition inputs
Retriggerable to 100% duty cycle
Direct reset terminates output pulse
Compensated for V
DTL, TTL compatible
Input clamp diodes
LOW Voltage Level
Immaterial
HIGH Voltage Level
Package Description
A
X
H
L
L
Inputs
B
X
H
H
L
CC
and temperature variations
CLR
X
H
X
H
L
August 1986
Revised July 2001
No Trigger
No Trigger
Trigger
No Trigger
Trigger
Trigger
Response
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Datasheet:
DM74123N Summary of contents
Page 1
... Operating Rules as well as the One–Shot Application Notes carefully and observe recom- mendations. Ordering Code: Order Number Package Number DM74123N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Connection Diagram Functional Description The basic output pulse width is determined by selection of ...
Page 2
Operating Rules 1. An external resistor (R ) and external capacitor (C X are required for proper operation. The value of C vary from 0 to any necessary value. For small time con- stants high-grade mica, glass, polypropylene, polycar- bonate, ...
Page 3
Absolute Maximum Ratings Supply Voltage Input Voltage Operating Free Air Temperature Range Storage Temperature Recommended Operating Conditions Symbol Parameter V Supply Voltage CC V HIGH Level Input Voltage IH V LOW Level Input Voltage IL I HIGH Level Output Current ...
Page 4
Switching Characteristics 5V and Symbol Parameter t Propagation Delay Time PLH LOW-to-HIGH Level Output t Propagation Delay Time PLH LOW-to-HIGH Level Output t Propagation Delay Time PHL HIGH-to-LOW Level Output t Propagation Delay ...
Page 5
Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at ...