Panasonic DN8643S Datasheet

■ Overview

The DN8643S is an IC which incorporates a 24-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 Bi­CMOS process in which the serial-in and serial-out/parallel-out
functions are incorporated, the 24-step shift register block and
latch block are composed of CMOS, and the 24-step parallel
driver block is bipolar.

■ Features

•

Serial-in and serial-out/parallel-out

•

Cascade connection allowed

•

Built-in output malfunctioning preventive circuit

•

Low current at stanby ICC=≤100µA

•

High-breakdown, large current drive type output steps

Breakdown : 30V
Output current : 120mA

•

Surface mountable USONF-36D package (pin pitch :

0.8mm)

DN8643S

24-bit Shift Register Latch Driver IC

15.2±0.3

11.93±0.3

8.4±0.3

0.5

2.85±0.2

0.2

+0.1

– 0.05

1.3±0.25

1.3±0.25

0.35±0.25

0.8

36-pin PANAFLAT Plastic Package (SSOP036-P-0450)

Unit : mm

0.1±0.1

1

18

36

19

■ Block Diagram

SIN

CLK

STB

EN

17

18
19

1

DCPQ

LQD

DCPQ

LQD

DCPQ

LD

Q

DCPQ

LD

Q

DCPQ

LD

Q

Output
Malfunction
Protector

20

SOUT

36

V

CC

GND
8, 9, 10
27, 28, 29

16 15

Q

1

14

Q

2

Q

3

22

Q

23

21

Q

24

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

1.3

*

–20 to + 75

–55 to + 125

*

When mounting onto the PCB, power dissipation is reduced at a rate of 10.4mW/˚C from Ta=25˚C

Parameter Symbol Rating Unit

■ Absolute Maximum Ratings (Ta=25˚C)

Parameter Symbol Condition mim typ max

■ Recommended Operating Range (Ta=25˚C)

Supply voltage

V

CC

6 V5

Output voltage

V

O

V

Output current

*

I

O

100 mA

30

4

Clock frequency

f

CLK

10 MHz

Input Duty 40 to 60%

Input pulse width

t

w

ns40
ns40

Setup time

t

su

ns30
ns40

Hold time

t

h

ns20

CLK
STB

SIN

STB

SIN

STB ns0

Clock pulse rise time

t

r

500 ns

Clock pulse fall time

t

f

500 ns

Unit

*

An allowable value changes depends on the number of simultaneously turned-on circuits and the duty. Use with power dissipation

taken into full account.

Input voltage

0.7V

CC

V

IH

V

CC

V

VCC=4 to 6V

0V

IL

0.3V

CC

V

Input current

I

IH

25 µA

V

IH

=5V

I

IL

–25 µA

V

IL

=0V

I

OL

=100mA
IOL=80mA
VO=30V (output OFF)

Output saturation voltage

V

CE (sat) 1

0.4 V

V

CE (sat) 2

0.35 V

Output leakage current

I

OLK1

50 µA

*

Output malfunctioning preventive circuit operating voltage timing chart

I

OLK2

µA

V

O

=15V (output Off)

Supply current

I

CC1

100 µA

Total driver output OFF

25

I

CC2

5 mA

Driver output 1 circuit ON

Output voltage

V

OH

V

I

O

= –1µA

V

OL

0.1 V

I

O

=1µA

4.9

Output current

I

OH

mA

V

OH

=4.5V

I

OL

mA

V

OL

=0.4V

–4

4

Output malfunctioning preventive
circuit operating voltage

*

2.9V

CCT

+

3.9 V

2.6V

CCT

–

3.6 V

OFF

Driver output

V

CCT

+

V

CCT

–

V

CC

Enable Enable

Parameter Symbol Condition min typ max Unit

■ Electrical Characteristics (Ta=25˚C)