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Número de pieza | BU4528BF | |
Descripción | Dual monostable multivibrator | |
Fabricantes | ROHM Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de BU4528BF (archivo pdf) en la parte inferior de esta página. Total 5 Páginas | ||
No Preview Available ! Standard ICs
Dual monostable multivibrator
BU4528B / BU4528BF
The BU4528B and BU4528BF are monostable multivibrators with trigger and reset functions that can be activated.
Each chip has two built-in circuits.
Triggers can initiate both rising and falling in response to Input A and Input B. As the output monostable pulse width
is determined by the time constant of the external resistance (Rx) and the capacitor (Cx), a wide range of output
pulse widths can be set.
Setting the RESET input to "L" enables external asynchronous resetting and this RESET input can be utilized to
reduce the time from the trigger disable input or the power on until the BU4528B and BU4528BF are ready for mono-
stable operation.
•Features
1) Low power dissipation.
4) High fan-out.
2) Wide range of operating power supply voltages.
5) Direct drive of 2 L-TTL inputs and 1 LS-TTL input.
3) High input impedance.
•Block diagram
•Truth table
INPUT
RESET
A
H
HL
H
HH
H L, H,
HL
LX
X
B
H
L
H
L, H,
X
X
T11 1
T21 2
RESET1 3
A1 4
B1 5
Q1 6
Q1 7
VSS 8
OUTPUT
QQ
Not Triggered
Not Triggered
Not Triggered
Not Triggered
LH
Not Triggered
16 VDD
15 T12
14 T22
13 RESET2
12 A2
11 B2
10 Q2
9 Q2
•Logic circuit diagram
A
B
RESET
CX RX
VDD
T1 T2
Q
Q
1
1 page Standard ICs
•Timing chart
AIN
BIN
RESET
BU4528B / BU4528BF
Q
Q
tN tN
t1
: TRIGGER
: RESET
: RETRIGGER
tN : (Cx > 0.01µF) tN Լ [0.2 + 0.1(VDD – VSS) ] · RxCx
t1, t2, t3 : t1,t2 ,t3 < tN
5
Fig. 3
•Electrical characteristic curve
1200
DIP16
1000
t2
800
600 SOP16
400
200
0
0 25 50 75 100 125 150
AMBIENT TEMPERATURE: Ta (°C)
Fig. 4 Power dissipation vs. Ta
•External dimensions (Units: mm)
BU4528B
BU4528BF
t3
tN
19.4 ± 0.3
16
9
1
2.54
8
7.62
0.5 ± 0.1
0.3 ± 0.1
0° ~ 15°
10.0 ± 0.2
16 9
18
1.27 0.4 ± 0.1
0.3Min.
DIP16
SOP16
0.15
5
5 Page |
Páginas | Total 5 Páginas | |
PDF Descargar | [ Datasheet BU4528BF.PDF ] |
Número de pieza | Descripción | Fabricantes |
BU4528B | Dual monostable multivibrator | ROHM Semiconductor |
BU4528BF | Dual monostable multivibrator | ROHM Semiconductor |
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