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BU4015BF Datasheet

Dual 4-bit static shift register

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Standard ICs
Dual 4-bit static shift register
BU4015B / BU4015BF
The BU4015B and BU4015BF are 4-stage static shift registers, each consisting of two circuits.
The D flip-flops for each stage share a common reset input, enabling external asynchronous reset at any point.
Also, the flip-flops at each stage are triggered by the rising edge of the clock input.
“H” level reset input resets the contents of all stages to “L”, regardless of the clock and data input, and sets data out-
puts Q0 to Q3 to “L”.
Features
1) Low power dissipation.
2) Wide range of operating power supply voltages.
3) High input impedance.
4) High fan-out.
5) Direct drive of 2 L-TTL inputs and 1 LS-TTL input.
Block diagram
CLOCK 1
B
Q3B 2
Q2B 3
Q1A 4
Q0A 5
RESET 6
A
DA 7
VSS 8
CL R D
Q3 Q2 Q1 Q0
Q0 Q1 Q2 Q3
CL R D
16 VDD
15 DB
14 RESET
B
13 Q0B
12 Q1B
11 Q2B
10 Q3A
9
CLOCK
A
Logic circuit diagram
Q0 Q1 Q2 Q3
D
CLOCK
RESET
DQ
CLR Q
DQ
CLR Q
DQ
CLR Q
DQ
CLR Q
Truth table
CLOCK D
L
H
X
XX
X : Irrelevant
RESET
L
L
L
H
Q0
L
H
L
Q1 Q2
Q0 Q1
Q0 Q1
No Change
LL
Q3
Q2
Q2
L
1


Rohm Semiconductor Electronic Components Datasheet

BU4015BF Datasheet

Dual 4-bit static shift register

No Preview Available !

Standard ICs
BU4015B / BU4015BF
Absolute maximum ratings (VSS = 0V, Ta = 25°C)
Parameter
Symbol
Limits
Power supply voltage
VDD – 0.3 ~ + 18
Power dissipation
Pd 1000 (DIP), 500 (SOP)
Operating temperature
Topr
– 40 ~ + 85
Storage temperature
Tstg – 55 ~ + 150
Input voltage
VIN – 0.3 ~ VDD + 0.3
Unit
V
mW
°C
°C
V
Electrical characteristics
DC characteristics (unless otherwise noted, Ta = 25°C, VSS = 0V)
Parameter
Input high level voltage
Input low level voltage
Input high level current
Input low level current
Output high level voltage
Output low level voltage
Output high level current
Output low level current
Static current dissipation
Symbol Min. Typ. Max.
3.5
VIH 7.0
11.0
VIL
IIH
IIL
4.95
VOH 9.95
14.95
VOL
– 0.16
IOH – 0.4
– 1.2
0.44
IOL 1.1
3.0
IDD
——
——
——
— 1.5
— 3.0
— 4.0
— 0.3
— – 0.3
——
——
——
— 0.05
— 0.05
— 0.05
——
——
——
——
——
——
— 20
— 40
— 80
Unit
VDD (V)
Conditions
5
V 10
15
5
V 10
15
µA 15 VIH = 15V
µA 15 VIL = 0V
5
V 10 IO = 0mA
15
5
V 10 IO = 0mA
15
5 VOH = 4.6V
mA 10 VOH = 9.5V
15 VOH = 13.5V
5 VOL = 0.4V
mA 10 VOL = 0.5V
15 VOL = 1.5V
5
µA 10 VI = VDD or GND
15
2


Part Number BU4015BF
Description Dual 4-bit static shift register
Maker Rohm
Total Page 4 Pages
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