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HD74LV221AのメーカーはHitachi Semiconductorです、この部品の機能は「Dual Monostable Multivibrators」です。 |
部品番号 | HD74LV221A |
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部品説明 | Dual Monostable Multivibrators | ||
メーカ | Hitachi Semiconductor | ||
ロゴ | |||
このページの下部にプレビューとHD74LV221Aダウンロード(pdfファイル)リンクがあります。 Total 19 pages
HD74LV221A
Dual Monostable Multivibrators
ADE-205-271A (Z)
2nd Edition
June 1999
Description
The HD74LV221A features output pulse-duration control by three methods. In the first method, the A
input is low and the B input goes high. In the second method, the B input is high and the A input goes low.
In the third method, the A input is low, the B input is high, and the clear (CLR) input goes high.
The basic pulse duration is programmed by selecting external resistance and capacitance values. The
external timing capacitor must be connected between Cext and Rext/Cext (positive) and an external resistor
connected between Rext/Cext and VCC.
To obtain variable pulse durations, connect an external variable resistance between Rext/Cext and VCC.
Pulse duration can be reduced by taking CLR low.
Features
• VCC = 2.0 V to 5.5 V operation
• All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V)
• All outputs VO (Max.) = 5.5 V (@VCC = 0 V)
• Output current ±6 mA (@VCC = 3.0 V to 3.6 V), ±12 mA (@VCC = 4.5 V to 5.5 V)
1 Page HD74LV221A
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit
Conditions
Supply voltage range
Input voltage range*1
Output voltage range*1, 2
VCC
VI
VO
Input clamp current
Output clamp current
Continuous output current
Continuous current through
VCC or GND
Maximum power dissipation
at Ta = 25°C (in still air)*3
I IK
I OK
IO
ICC or IGND
PT
–0.5 to 7.0
–0.5 to 7.0
–0.5 to VCC + 0.5
–0.5 to 7.0
–20
±50
±25
±50
V
V
V
mA
mA
mA
mA
785 mW
Output: H or L
VCC: OFF
VI < 0
VO < 0 or VO > VCC
VO = 0 to VCC
SOP
500 TSSOP
Storage temperature
Tstg
–65 to 150
°C
Notes: The absolute maximum ratings are values which must not individually be exceeded, and furthermore,
no two of which may be realized at the same time.
1. The input and output voltage ratings may be exceeded if the input and output clamp-current
ratings are observed.
2. This value is limited to 5.5 V maximum.
3. The maximum package power dissipation was calculated using a junction temperature of 150°C.
3
3Pages HD74LV221A
Switching Characteristics
• VCC = 2.5 ± 0.2 V
Ta = 25°C
Ta = –40 to 85°C
Item
Propa-
gation
delay time
Pulse
width
Output
pulse
width
Symbol Min
tPLH —
tPHL
—
—
—
—
—
tw 6.0
twQ —
90
Typ Max
13.3 31.4
15.5 36.0
10.9 25.0
12.5 32.8
13.5 33.4
15.9 38.0
——
170 260
100 110
Min
1.0
1.0
1.0
1.0
1.0
1.0
6.5
—
90
Max
37.0
42.0
29.5
34.5
39.0
44.0
—
320
110
Unit
ns
ns
ns
µs
0.9 1.0 1.1 0.9
1.1
ms
∆twQ — ±1 — — —
%
Test Conditions
CL = 15 pF
FROM
(Input)
A or B
CL = 50 pF
CL = 15 pF
CL = 50 pF
CL = 15 pF
CL = 50 pF
A, B or CLR
CLR
CLR
(Trigger)
CL = 50 pF,
Cext = 28 pF, Rext = 2 kΩ
CL = 50 pF,
Cext = 0.01 µF, Rext = 10 kΩ
CL = 50 pF,
Cext = 0.1 µF, Rext = 10 kΩ
CL = 50 pF
TO
(Output)
Q or Q
Q or Q
Q or Q
6
6 Page | |||
ページ | 合計 : 19 ページ | ||
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PDF ダウンロード | [ HD74LV221A データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
HD74LV221A | Dual Monostable Multivibrators | Hitachi Semiconductor |