BU4021B Rohm Semiconductor, BU4021B Datasheet - Page 12

• Manufacturer Part Number: BU4021B
• Description: IC SHIFT REGISTER 8BIT 16DIP
• Manufacturer: Rohm Semiconductor
• Series: 4000Br

Specifications of BU4021B

• Logic Type: Shift Register
• Output Type: Standard
• Number Of Elements: 1
• Number Of Bits Per Element: 8
• Function: Parallel or Serial to Serial
• Voltage - Supply: 3 V ~ 16 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 16-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

●Reference data(BU4028B)
●Description of BU4015B series model
© 2009 ROHM Co., Ltd. All rights reserved.
BU4015B,BU4015BF,BU4021B,BU4021BF,
BU4094BC,BU4094BCF,BU4094BCFV,BU4538B,BU4028B
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CLOCK B
RESET A
(*) Switching characteristics is shown in P15.
Function：Dual 4-bit static shift register
1) Description of operation
PIN arrangement
Q3B
Q2B
Q1A
Q0A
VSS
DA
50
40
30
20
10
400
350
300
250
200
150
100
0
50
Dual 4-bit static shift register of BU4015B is configured with 2 independent serial input/parallel output registers of the same 4-state.
Each register is provided with an independent clock and reset input having one series data input. Register state is the D
type master/slave flip-flop. Data is shifted to the next stage during the rise time of the clock. Each register can be cleared
by addition of “H” level to reset.
0
Fig.43 Propagation delay tTHL
0
1
2
3
4
5
6
7
8
-50
-40[℃]
VDD=10[V]
25[℃]
Fig.40 Output source
VDD=15[V]
-25
current－voltage
Operating Temperature Range
Q3 Q2 Q1 Q0
Q0 Q1 Q2 Q3
Ambient Temperature [℃]
CL
CL
85[℃]
5
VDD=5[V]
-40[℃]
-40[℃]
Output Voltage [V]
R
R
0
D
D
25[℃]
25[℃]
85[℃]
85[℃]
10
25
16
15
14
13
12
11
10
9
50
VDD=10[V]
VDD=16[V]
VDD
D8
RESET B
Q0B
Q1B
Q2B
Q3A
CLOCK A
VDD=3[V]
VDD=5[V]
15
[BU4028B]
[BU4028B]
Truth table
75
X：Don't Care
CLOCK
CLOCK
RESET
D
X
100
20
Block diagram
D
L
H
X
X
D
CL
R
RESET
50
40
30
20
10
500
400
300
200
100
Q
Q
0
0
L
L
L
H
0
-50
Q0
Fig.44 Propagation delay tPLH
D
CL
-25
R
Q0
Fig.41 Output sink
L
H
L
L
Q
Q
Operating Temperature Range
current－voltage
Ambient Temperature [℃]
5
-40[℃]
Q1
25[℃]
85[℃]
Output Voltage [V]
12/17
Q1
Q0
Q0
0
D
CL
L
No Change
VDD=5[V]
R
Q
Q
10
25
Q2
Q1
Q1
-40[℃]
Q2
25[℃]
85[℃]
L
50
D
CL
VDD=10[V]
VDD=16[V]
Q3
Q2
Q2
VDD=10[V]
R
VDD=3[V]
VDD=5[V]
L
15
VDD=15[V]
Q
Q
[BU4028B]
[BU4028B]
-40[℃]
25[℃]
85[℃]
75
Q3
100
20
PIN No.
PIN description
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
CLOCKB
CLOCKA
RESETA
RESETB
400
350
300
250
200
150
100
500
400
300
200
100
Symbol
50
VDD
Q3B
Q2A
Q1A
Q0A
VSS
Q3A
Q2B
Q1B
Q0B
0
0
DA
DB
Fig.42 Propagation delay tTLH
-50
-50
Fig.45 Propagation delay tPHL
[BU4028B]
[BU4028B]
-25
-25
Operating Temperature Range
Ambient Temperature [℃]
Ambient Temperature [ ℃ ]
I/O
Operating Voltage Range
―
―
O
O
O
O
O
O
O
O
I
I
I
I
I
I
0
0
Technical Note
Reset input (CHA)
Reset input (CHB)
2009.06 - Rev.A
Clock input (CHB)
Clock input (CHA)
Data input (CHA)
Data input (CHB)
25
25
Power supply(+)
Output 3 (CHB)
Output 2 (CHA)
Output 1 (CHB)
Output 0 (CHA)
Power supply(-)
Output 3 (CHA)
Output 2 (CHB)
Output 1 (CHB)
Output 0 (CHB)
Function
50
50
VDD=10[V]
VDD=16[V]
VDD=5[V]
VDD=3[V]
VDD=5[V]
VDD=10[V]
VDD=16[V]
VDD=3[V]
75
75
100
100