1
Others
s
Overview
The DN8648FBP is an IC which incorporates a 32-bit shift
register and a latch driver to meet high-speed operation low
power consumption and high-density printout of the thermal
printers for the work processors, and so on. It employs the Bi-
CMOS process in which the serial-in and serial-out/parallel-out
functions are incorporated, the 32-step shift register block and
latch block are composed of CMOS, and the 32-step parallel
driver block is bipolar.
s
Features
Serial-in and serial-out/parallel-out
Cascade connection allowed
Built-in output malfunctioning preventive circuit
Low current consumption at standby I
CC
100A
High-breakdown, large current drive type output steps
Breakdown voltage : 30V
Output current
: 120mA (per pin)
Surface mountable 44-pin flat package (pin pitch : 0.8mm)
s
Applications
Driving of the thermal heads
Driving of the relays, LEDs, solenoids, etc.
DN8648FBP
32-bit Shift Register Latch Driver IC
1
11
33
23
12
22
34
44
0.35
0.1
0.8
Unit : mm
10.0
0.3
2.85
0.2
1.3
0.1
1.3
0.1
0.2
0.6
+ 0.1
0.05
12.2
0.3
0.1
0.1
10.0
0.3
12.2
0.3
44-pin QUADFLAT Package (QFH044-P-1010 )
39
SOUT
34
V
CC
GND
6, 7, 27, 28
31
33
32
37
EN
36
STB
35
CLK
38
SIN
D
CP
Q
L
Q
D
D
CP
Q
L
Q
D
D
CP
Q
L D
42
Q
1
D
CP
Q
L D
Q
43
D
CP
Q
L D
Q
Q
Q
2
Q
3
Q
31
Q
32
Output
malfunction
protector
s
Block Diagram
2
Others
DN8648FBP
V
CC
V
O
I
O
P
D
T
opr
T
stg
Supply voltage
Output voltage
Output current
Power dissipation
Operating ambient temperature
Storage temperature
V
V
mA
W
C
C
0 to 7
0 to 30
120 (Per one circuit)
1.8 *
20 to + 75
55 to + 125
* When mounting onto the PCB, power dissipation is reduced at a rate of 15mW/C from Ta= 25C.
Parameter
Symbol
Rating
Unit
s
Absolute Maximum Ratings
(Ta = 25C)
Operating supply voltage
Output voltage
Output current
Clock frequency
Input pulse width
Setup time
Hold time
CLK
STB
over 40ns
over 40ns
SIN
STB
SIN
STB
over 30ns
over 40ns
over 20ns
over 0ns
Clock pulse rise time
Clock pulse fall time
*1 An allowable value changes depends on the number of simultaneously turned-on circuits and the duty. Use with power dissipation taken into full account.
*2 Input duty : 40 to 60%
V
CC
V
O
I
O
f
CLK
t
w
t
su
t
h
t
r
t
f
4 to 6V
below 30V
below 100mA *
1
below 10MHz *
2
below 500ns
below 500ns
Parameter
Symbol
Range
s
Recommended Operating Range
(Ta=25C)
Input voltage
0.7V
CC
V
IH
V
CC
V
V
CC
= 4 to 6V
0
V
IL
0.3V
CC
V
Input current
I
IH
25
A
V
IH
= 5V
I
IL
25
A
V
IL
= 0V
I
OL
=100mA
I
OL
= 80mA
V
O
= 30V (output OFF)
Output saturation voltage (Qn)
V
CE (sat) 1
0.4
V
V
CE (sat) 2
0.35
V
Output leakage current
I
OLK1
50
A
* V
CC
=5V unless otherwise specified
I
OLK2
A
V
O
=15V (output OFF)
Supply current
I
CC1
100
A
Total driver output OFF
25
I
CC2
5
mA
Driver output 1 circuit ON
Output voltage (SOUT)
V
OH
V
I
O
= 1
A
V
OL
0.1
V
I
O
=1
A
4.9
Output current (SOUT)
I
OH
mA
V
OH
= 4.5V
I
OL
mA
V
OL
= 0.4V
4
4
Output malfunctioning preventive
Circuit operating voltage
2.9
V
CCT
+
3.9
V
*
2.6
V
CCT
3.6
V
*
Parameter
Symbol
Condition
min
typ
max
Unit
s
Electrical Characteristics
(Ta=25C)
3
Others
DN8648FBP
off
Driver output
V
CCT
+
V
CCT
V
CC
Enable
Enable
* Output malfunctioning preventive circuit operating voltage timing chart
Parameter
Symbol
Condition
min
typ
max
Unit
s
Switching Characteristics
(Ta =25C)
Maximum clock frequency
10
f
max.
MHz
Propagation delay time
t
PLH
100
ns
t
PHL
100
ns
t
PLH
2
s
V
CC
= 5V
R
L
= 100
C
L
= 15pF
V
CC
= 5V
C
L
= 15pF
Input
CLK
CLK
CLK
Output
SOUT
t
PHL
0.5
s
t
PLH
2
s
t
PHL
0.5
s
Qn
EN
Qn
s
Supplementary Descriptions
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
10%
10%
90%
90%
1/f
CLK
t
WH (CLK)
t
r (CLK)
t
f (CLK)
t
h (SIN)
t
su (SIN)
t
h (SIN)
t
su (SIN)
t
su (STB)
t
w (STB)
t
h (STB)
t
WL (CLK)
CLK
SIN
STB
Timing Chart
1. Input Timing
2. Propagation Delay Time
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
t
PLH
t
PLH
t
PLH
t
PHL
t
PHL
t
PHL
CLK
EN
SOUT
Q
1
Q
32
4
Others
DN8648FBP
Input
Driver output
SOUT
CLK
EN
L
L
H
H
H
H
STB
L
H
H
H
SIN
L
H
Q
l
H
H
nc
H
L
nc
Q
n
H
H
nc
Q
n 1
Q
n 1
nc
Q'
31
nc
Q'
31
Q'
31
Q'
31
nc
Note) H = High level, L = Low level,
= Either "H" or "L" will do,
= Transition from "H" to "L",
= Transition from "H" to "L", nc = No change, Q'
31
= Status of the 31st shift register
s
Supplementary Descriptions (cont.)
Function Table
Pin Assignments
V
CC
CLK
STB
EN
SIN
SOUT
NC
NC
Q
32
Q
31
Q
30
Q
10
Q
11
Q
12
Q
13
Q
14
Q
15
Q
16
Q
17
Q
18
Q
19
Q
20
34
35
36
37
38
39
40
41
42
43
44
DN8648FBP
22
21
20
19
18
17
16
15
14
13
12
33
32
31
30
29
28
27
26
25
24
23
Q
1
Q
2
Q
3
Q
4
Q
5
GND GND Q
6
Q
7
Q
8
Q
9
1
2
3
4
5
6
7
8
9
10
11
Q
29
Q
28
Q
27
Q
26
Q
25
GND GND Q
24
Q
23
Q
22
Q
21
PDF 
ZIP