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| HD74AC280/HD74ACT280 9-bit Parity Generator/Checker Description The HD74AC280/HD74ACT280 is a high-speed parity generator/checker that accepts nine bits of input data and detects whether an even or an odd number of these inputs is High. If an even number of inputs is High, the Sum Even output is High. If an odd number is High, the Sum Even output is Low. The Sum Odd output is the complement of the Sum Even output. Features * Outputs Source/Sink 24 mA * HD74ACT280 has TTL-Cmpatible Inputs Pin Arrangement I6 1 I7 2 NC 3 I8 4 E 5 O 6 GND 7 (Top view) 14 VCC 13 I5 12 I4 11 I3 10 I2 9 I1 8 I0 HD74AC280/HD74ACT280 Logic Symbol I0 I1 I2 I3 I4 I5 I6 I7 I8 O E Pin Names I0 - I8 O E Data Inputs Odd Parity Output Even Parity Output Truth Table Outputs Number of High Inputs I0 - I 8 0, 2, 4, 6, 8 1, 3, 5, 7, 9 H: L: High Voltage Level Low Voltage Level Even H L Odd L H 2 HD74AC280/HD74ACT280 Logic Diagram I8 I7 I6 I5 I4 I3 I2 I1 I0 O E Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. 3 HD74AC280/HD74ACT280 DC Characteristics (unless otherwise specified) Item Maximum quiescent supply current Maximum quiescent supply current Maximum ICC/input (HD74ACT280) Symbol I CC I CC I CCT Max 80 8.0 1.5 Unit A A mA Condition VIN = VCC or ground, VCC = 5.5 V, Ta = Worst case VIN = VCC or ground, VCC = 5.5 V, Ta = 25C VIN = VCC - 2.1 V, VCC = 5.5 V, Ta = Worst case AC Characteristics: HD74AC280 Ta = +25C CL = 50 pF Item Propagation delay Symbol t PLH VCC (V)*1 3.3 5.0 Propagation delay t PHL 3.3 5.0 Note: 1. Voltage Range 3.3 is 3.3 V 0.3 V Voltage Range 5.0 is 5.0 V 0.5 V Min 1.0 1.0 1.0 1.0 Typ 14.5 11.0 14.5 11.0 Max 17.0 13.0 17.0 13.0 Ta = -40C to +85C CL = 50 pF Min 1.0 1.0 1.0 1.0 Max 18.5 14.5 18.5 14.5 ns Unit ns AC Characteristics: HD74ACT280 Ta = +25C CL = 50 pF Item Propagation delay Propagation delay Note: Symbol t PLH t PHL VCC (V)*1 5.0 5.0 Min 1.0 1.0 Typ 12.5 12.5 Max 15.0 15.0 Ta = -40C to +85C CL = 50 pF Min 1.0 1.0 Max 16.5 16.5 Unit ns ns 1. Voltage Range 5.0 is 5.0 V 0.5 V Capacitance Item Input capacitance Power dissipation capacitance Symbol CIN CPD Typ 4.5 60.0 Unit pF pF Condition VCC = 5.5 V VCC = 5.0 V 4 Unit: mm 19.20 20.32 Max 14 8 6.30 7.40 Max 1 2.39 Max 1.30 7 7.62 0.51 Min 2.54 Min 5.06 Max 2.54 0.25 0.48 0.10 0.25 - 0.05 0 - 15 + 0.10 Hitachi Code JEDEC EIAJ Weight (reference value) DP-14 Conforms Conforms 0.97 g Unit: mm 10.06 10.5 Max 14 8 5.5 1 7 *0.22 0.05 0.20 0.04 2.20 Max 7.80 - 0.30 1.15 0 - 8 0.70 0.20 + 0.20 1.42 Max 1.27 *0.42 0.08 0.40 0.06 0.12 M Hitachi Code JEDEC EIAJ Weight (reference value) FP-14DA -- Conforms 0.23 g *Dimension including the plating thickness Base material dimension 0.10 0.10 0.15 Unit: mm 8.65 9.05 Max 14 8 3.95 1 1.75 Max 7 *0.20 0.05 6.10 - 0.30 1.08 + 0.10 0.635 Max 0 - 8 0.11 0.14 + 0.04 - 1.27 *0.40 0.06 0.67 0.60 + 0.20 - 0.15 0.25 M Hitachi Code JEDEC EIAJ Weight (reference value) FP-14DN Conforms Conforms 0.13 g *Pd plating Unit: mm 5.00 5.30 Max 14 8 4.40 1 *0.22+0.08 -0.07 7 0.65 1.0 0.13 M 0.83 Max *0.17 0.05 0.15 0.04 1.10 Max 6.40 0.20 0 - 8 0.50 0.10 0.20 0.06 0.10 0.07 +0.03 -0.04 *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Weight (reference value) TTP-14D -- -- 0.05 g Cautions 1. Hitachi neither warrants nor grants licenses of any rights of Hitachi's or any third party's patent, copyright, trademark, or other intellectual property rights for information contained in this document. Hitachi bears no responsibility for problems that may arise with third party's rights, including intellectual property rights, in connection with use of the information contained in this document. 2. Products and product specifications may be subject to change without notice. Confirm that you have received the latest product standards or specifications before final design, purchase or use. 3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However, contact Hitachi's sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment or medical equipment for life support. 4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product. 5. This product is not designed to be radiation resistant. 6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. 7. Contact Hitachi's sales office for any questions regarding this document or Hitachi semiconductor products. Hitachi, Ltd. Semiconductor & Integrated Circuits. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Tel: Tokyo (03) 3270-2111 Fax: (03) 3270-5109 URL NorthAmerica : http:semiconductor.hitachi.com/ Europe : http://www.hitachi-eu.com/hel/ecg Asia (Singapore) : http://www.has.hitachi.com.sg/grp3/sicd/index.htm Asia (Taiwan) : http://www.hitachi.com.tw/E/Product/SICD_Frame.htm Asia (HongKong) : http://www.hitachi.com.hk/eng/bo/grp3/index.htm Japan : http://www.hitachi.co.jp/Sicd/indx.htm For further information write to: Hitachi Semiconductor (America) Inc. 179 East Tasman Drive, San Jose,CA 95134 Tel: <1> (408) 433-1990 Fax: <1>(408) 433-0223 Hitachi Europe GmbH Electronic components Group Dornacher Strae 3 D-85622 Feldkirchen, Munich Germany Tel: <49> (89) 9 9180-0 Fax: <49> (89) 9 29 30 00 Hitachi Europe Ltd. Electronic Components Group. Whitebrook Park Lower Cookham Road Maidenhead Berkshire SL6 8YA, United Kingdom Tel: <44> (1628) 585000 Fax: <44> (1628) 778322 Hitachi Asia Pte. Ltd. 16 Collyer Quay #20-00 Hitachi Tower Singapore 049318 Tel: 535-2100 Fax: 535-1533 Hitachi Asia Ltd. Taipei Branch Office 3F, Hung Kuo Building. No.167, Tun-Hwa North Road, Taipei (105) Tel: <886> (2) 2718-3666 Fax: <886> (2) 2718-8180 Hitachi Asia (Hong Kong) Ltd. Group III (Electronic Components) 7/F., North Tower, World Finance Centre, Harbour City, Canton Road, Tsim Sha Tsui, Kowloon, Hong Kong Tel: <852> (2) 735 9218 Fax: <852> (2) 730 0281 Telex: 40815 HITEC HX Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan. |
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