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Ordering number:ENN1077C
Monolithic Digital IC
LB8555D, 8555S
General-Purpose Timer
Overview
The LB8555 is a delay time generator IC capable of generating exact timing pulses. Both trigger pin and reset pin are provided for various uses such as monostable multivibrator, astable multivibrator. The output circuit is capable of applying 200mA sink/source current. Output is interfaceable to TTL. This IC is usable as a replacement for Signeticsmade NE555.
Package Dimensions
unit:mm 3001C-DIP8
[LB8555D, 8555S]
9.14 8 5
7.62 6.4
Features
* Timing time settable from several s. to several hours. * Monostable multivibrator consisting of R=1, C=1 ; astable multivibrator consisting of R=2, C=1. * Adjustable duty cycle of pulse. * 200mA sink/source current for driving external load.
1.0
1
4
3.9max (3.0)
0.51min
0.5 (0.76) 2.54
1.4
3.2
Applications
* Delay time generator (monostable multivibrator). * Sequence timer. * Pulse generator (astable multivibrator). * DC-DC converter. * Pulse width modulator.
SANYO : DIP8
unit:mm 3016B-SIP8
[LB8555D, 8555S]
22.3 1.5
0.51 min 5.7 max
0.25
3.0
4.8 1.0
1 2.26 2.54 0.5 1.3
8
3.2
0.25 1.35
SANYO : SIP8
Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other parameters) listed in products specifications of any and all SANYO products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
22801TN (KT)/1090TA/6307TA/8075KI/O122KI, TS No.1077-1/3
LB8555D, 8555S Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Output current Input voltage Allowable power dissipation Operating temperature Storage temperature Pd max Topr Tstg Symbol VCC max IOUT Trigger, control voltage, reset, threshold Conditions Ratings 18 200 VCC 625 -20 to +75 -40 to +125 Unit V mA V mW
C C
Allowable Operating Ranges at Ta = 25C
Parameter Supply voltage Input voltage Output current Symbol VCC Vi IO Trigger, control voltage, reset, threshold Conditions Ratings 4.5 to 16 VCC 200 Unit V V mA
Electrical Characteristics at Ta = 25C
Parameter Supply current Control voltage Threshold voltage Threshold current Trigger voltage Trigger current Reset voltage Reset current Output low-level voltage Symbol ICC1 ICC2 Vcon1 Vcon2 VTH ITH VT IT Vrs Irs VOL VCC=5V, Isink=5mA VCC=15V, Isink=10mA VCC=15V, Isink=100mA Output high-level voltage VOH VCC=5V, Isource=100mA VCC=15V, Isource=100mA 2.75 12.75 0.35 VCC=5V, RL= VCC=15V, RL= VCC=5V VCC=15V 2.6 9 Conditions Ratings min typ 3 10 3.33 10
2/3VCC
max 6 15 4.0 11 0.25 1.0 1.0 0.35 0.25 2.5
Unit mA mA V V V A V A V mA V V V V V
0.1
1/3VCC
0.5 0.7 0.1 0.25 0.1 2.0 3.3 13.3
Equivalent Circuit Block Diagram and Pin Assignment
Top view
No.1077-2/3
LB8555D, 8555S
Equivalent Circuit
Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products(including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be expor ted without obtaining the expor t license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of February, 2001. Specifications and information herein are subject to change without notice.
PS No.1077-3/3

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