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HD74AC123A の電気的特性と機能

HD74AC123AのメーカーはHitachi Semiconductorです、この部品の機能は「Dual Retriggerable Resettable Multivibrator」です。


製品の詳細 ( Datasheet PDF )

部品番号 HD74AC123A
部品説明 Dual Retriggerable Resettable Multivibrator
メーカ Hitachi Semiconductor
ロゴ Hitachi Semiconductor ロゴ 




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HD74AC123A Datasheet, HD74AC123A PDF,ピン配置, 機能
HD74AC123A
Dual Retriggerable Resettable Multivibrator
Description
Each half of the HD74AC123A features retriggerable capability, complementary dc level triggering and
overriding Direct Clear. When a circuit is in the quasi-stable (delay) state, another trigger applied to the
inputs (per the Truth Table) will cause the delay period to start again, without disturbing the outputs. By
repeating this process, the output pulse period (Q High, Q Low) can be made as long as desired.
Alternatively, a delay period can be terminated at any time by a Low signal on CD, which also inhibits
triggering. An internal connection from CD to the input gate makes it possible to trigger the circuit by a
positive-going signal on CD, as shown in the Truth Table. For timing capacitor values greater than 1000
pF, the output pulse width is defined as follows.
Where tw is in ns, RX is in k and C X is in pF.
tw = RXCX
Feature
Outputs Source/Sink 24 mA

1 Page





HD74AC123A pdf, ピン配列
Pin Names
A1, A 2
B1, B2
CD1, CD2
Q1, Q2
Q1, Q 2
Trigger Inputs (Active Falling Edge)
Trigger Inputs (Active Rising Edge)
Direct Clear Inputs (Active Low)
Positive Pulse Outputs
Negative Pulse Outputs
Triggering Truth Table
Inputs
AB
XX
L
H
H
L
LH
H : High Voltage Level
L : Low Voltage Level
X : Immaterial
: Low-to-High Transition
: High-to-Low Transition
CD
L
X
H
X
H
HD74AC123A
Response
No trigger
No trigger
Trigger
No trigger
Trigger
Trigger
DC Characteristics (unless otherwise specified)
Item
Maximum quiescent supply current
Symbol Max
ICC 80
Unit
µA
Maximum quiescent supply current ICC 8.0 µA
Condition
VIN = VCC or ground, VCC = 5.5 V,
Ta = Worst case
VIN = VCC or ground, VCC = 5.5 V,
Ta = 25°C
3


3Pages


HD74AC123A 電子部品, 半導体
19.20
20.00 Max
16
9
1
1.3
1.11 Max
8
Unit: mm
7.62
2.54 ± 0.25
0.48 ± 0.10
0.25
+
0.13
0.05
0° – 15°
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
DP-16
Conforms
Conforms
1.07 g

6 Page



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[ HD74AC123A データシート.PDF ]


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共有リンク

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部品番号部品説明メーカ
HD74AC123A

Dual Retriggerable Resettable Multivibrator

Hitachi Semiconductor
Hitachi Semiconductor


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