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DN8643S
24-bit Shift Register Latch Driver IC
s 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.
1 0.350.25 36 Unit : mm
s Features
* Serial-in and serial-out/parallel-out * Cascade connection allowed * Built-in output malfunctioning preventive circuit * Low current at stanby ICC=100A * High-breakdown, large current drive type output steps
Breakdown : 30V Output current : 120mA * Surface mountable USONF-36D package (pin pitch : 0.8mm)
0.10.1
18
19 1.30.25 2.850.2 0.2 - 0.05 20 36 LD Q Output Malfunction Protector
+ 0.1
0.5
15.20.3 8.40.3 11.930.3 1.30.25 DQ CP
s Block Diagram
SIN
17
DQ CP
DQ CP
DQ CP
DQ CP
0.8
36-pin PANAFLAT Plastic Package (SSOP036-P-0450)
SOUT
CLK STB
18 19 LD Q LD Q LD Q LD Q
VCC
EN
1
GND 8, 9, 10 27, 28, 29
16 15 14 22 21
Q1
Q2
Q3
Q23
Q24
s Absolute Maximum Ratings (Ta=25C)
Parameter Supply voltage Output voltage Output current Power dissipation Operating ambient temperature Storage temperature Symbol VCC VO IO PD Topr Tstg Rating 0 to 7 0 to 30 120 1.3 * -20 to + 75 -55 to + 125 Unit V V mA W C C
* When mounting onto the PCB, power dissipation is reduced at a rate of 10.4mW/C from Ta=25C
s Recommended Operating Range (Ta=25C)
Parameter Supply voltage Output voltage Output current * Clock frequency Input pulse width Setup time Hold time Clock pulse rise time Clock pulse fall time CLK STB SIN STB SIN STB Symbol VCC VO IO fCLK tw tsu th tr tf Input Duty 40 to 60% 40 40 30 40 20 0 500 500 Condition mim 4 typ 5 max 6 30 100 10 Unit V V mA MHz ns ns ns ns ns ns ns ns
* An allowable value changes depends on the number of simultaneously turned-on circuits and the duty. Use with power dissipation taken into full account.
s Electrical Characteristics (Ta=25C)
Parameter Input voltage Input current Output voltage Output current Output saturation voltage Output leakage current Supply current Output malfunctioning preventive circuit operating voltage *
VCC VCCT- VCCT+
Symbol VIH VIL IIH IIL VOH VOL IOH IOL VCE (sat) 1 VCE (sat) 2 IOLK1 IOLK2 ICC1 ICC2 VCCT+ VCCT-
Condition VCC=4 to 6V VIH=5V VIL=0V IO= -1A IO=1A VOH=4.5V VOL=0.4V IOL=100mA IOL=80mA VO=30V (output OFF) VO=15V (output Off) Total driver output OFF Driver output 1 circuit ON
min 0.7VCC 0
typ
max VCC 0.3VCC 25 -25
Unit V V A A V V mA mA
4.9 0.1 -4 4 0.4 0.35 50 25 100 5 2.9 2.6 3.9 3.6
V V A A A mA V V
* Output malfunctioning preventive circuit operating voltage timing chart
Driver output
Enable
OFF
Enable
s Switching Characteristics (Ta=25C)
Parameter Maximum clock frequency Symbol fmax tPLH tPHL Propagation delay time tPLH tPHL tPLH tPHL Input CLK CLK CLK EN SOUT Qn Qn VCC=5V CL=15pF VCC=5V RL=100 CL=15pF Output Condition min 10 100 100 2 0.5 2 0.5 typ max Unit MHz ns ns s s s s
s Timing Chart
1. Input Timing
1/fCLK tWH (CLK) tWL (CLK)
CLK
90% 2.5V 10% th (CLK) 2.5V 2.5V
90% 2.5V 10% tf (CLK) 2.5V 2.5V
tsu (SIN) th (SIN) SIN STB A.B.C 2.5V
tsu (SIN) th (SIN) tsu (STB) th (STB) 2.5V 2.5V tw (STB)
2. Propagation Delay Time
CLK
2.5V tPLH
2.5V
SOUT
2.5V tPHL
2.5V
EN
2.5V tPLH
2.5V
Q1 to Q24
tPLH
2.5V tPHL
2.5V
2.5V tPHL
2.5V
s Pin Assignments
EN Q12 Q11 Q10 Q9 Q8 Q7 GND GND GND Q6 Q5 Q4 Q3 Q2 Q1 SIN CLK
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
36 35 34 33 32 31 30 29
VCC Q13 Q14 Q15 Q16 Q17 Q18 GND GND GND Q19 Q20 Q21 Q22 Q23 Q24 SOUT STB
DN8643S
28 27 26 25 24 23 22 21 20 19
(Top View)
s Functions Table
Input CLK EN H H L L L L STB x x L H H H SIN x x x L H x Ql H H nc H L nc Driver output Qn H H nc Qn-1 Qn-1 nc Q'23 nc Q'23 Q'23 Q'23 nc SOUT
Note) H=High level, L=Low level, x = Either "H" or "L" will do, = Transition from "H" or "L" , = Transition from "H" to "L" , nc=No change, Q'23=Status of the 23rd shift register
Request for your special attention and precautions in using the technical information and semiconductors described in this material
(1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. (2) The technical information described in this material is limited to showing representative characteristics and applied circuit examples of the products. It does not constitute the warranting of industrial property, the granting of relative rights, or the granting of any license. (3) The products described in this material are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). Consult our sales staff in advance for information on the following applications: * Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body. * Any applications other than the standard applications intended. (4) The products and product specifications described in this material are subject to change without notice for reasons of modification and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product Standards in advance to make sure that the latest specifications satisfy your requirements. (5) When designing your equipment, comply with the guaranteed values, in particular those of maximum rating, the range of operating power supply voltage and heat radiation characteristics. Otherwise, we will not be liable for any defect which may arise later in your equipment. Even when the products are used within the guaranteed values, redundant design is recommended, so that such equipment may not violate relevant laws or regulations because of the function of our products. (6) When using products for which dry packing is required, observe the conditions (including shelf life and after-unpacking standby time) agreed upon when specification sheets are individually exchanged. (7) No part of this material may be reprinted or reproduced by any means without written permission from our company.
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A. These materials are intended as a reference to assist customers with the selection of Panasonic semiconductor products best suited to their applications. Due to modification or other reasons, any information contained in this material, such as available product types, technical data, and so on, is subject to change without notice. Customers are advised to contact our semiconductor sales office and obtain the latest information before starting precise technical research and/or purchasing activities. B. Panasonic is endeavoring to continually improve the quality and reliability of these materials but there is always the possibility that further rectifications will be required in the future. Therefore, Panasonic will not assume any liability for any damages arising from any errors etc. that may appear in this material. C. These materials are solely intended for a customer's individual use. Therefore, without the prior written approval of Panasonic, any other use such as reproducing, selling, or distributing this material to a third party, via the Internet or in any other way, is prohibited.
2001 MAR

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