HD74AC244/HD74ACT244 Octal Buffer/Line Driver with 3-State Output ADE-205-383 (Z) 1st. Edition Sep. 2000 Description The HD74AC244/HD74ACT244 is an octal buffer and line driver designed to be employed as a memory address driver, clock driver and bus-oriented transmitter/receive which provides improved PC board density. Features * 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers * Outputs Source/Sink 24 mA * HD74ACT244 has TTL-Compatible Inputs Pin Arrangement OE1 1 20 VCC 1A1 2 19 OE2 2Y4 3 18 1Y1 1A2 4 17 2A4 2Y3 5 16 1Y2 1A3 6 15 2A3 2Y2 7 14 1Y3 1A4 8 13 2A2 2Y1 9 12 1Y4 GND 10 11 2A1 (Top view) HD74AC244/HD74ACT244 Truth Tables Inputs Outputs (Pins 12, 14, 16, 18) OE1 A Y L L L L H H H X Z Inputs Outputs (Pins 3, 5, 7, 9) OE2 A Y L L L L H H H X Z H L X Z : : : : High Voltage Level Low Voltage Level Immaterial High Impedance DC Characteristics (unless otherwise specified) Item Symbol Max Unit Condition Maximum quiescent supply current I CC 80 A VIN = VCC or ground, VCC = 5.5 V, Ta = Worst case Maximum quiescent supply current I CC 8.0 A VIN = VCC or ground, VCC = 5.5 V, Ta = 25C Maximum additional ICC/input (HD74ACT244) I CCT 1.5 mA VIN = VCC - 2.1 V, VCC = 5.5 V, Ta = Worst case 2 HD74AC244/HD74ACT244 AC Characteristics: HD74AC244 Ta = +25C CL = 50 pF Ta = -40C to +85C CL = 50 pF Item Symbol VCC (V)*1 Min Typ Max Min Max Unit Propagation delay t PLH 3.3 1.0 6.5 9.0 1.0 10.0 ns 5.0 1.0 5.0 7.0 1.0 7.5 3.3 1.0 6.5 9.0 1.0 10.0 5.0 1.0 5.0 7.0 1.0 7.5 3.3 1.0 6.0 10.5 1.0 11.0 5.0 1.0 5.0 7.0 1.0 8.0 3.3 1.0 7.5 10.0 1.0 11.0 5.0 1.0 5.5 8.0 1.0 8.5 3.3 1.0 7.0 10.0 1.0 10.5 5.0 1.0 6.5 9.0 1.0 9.5 3.3 1.0 7.5 10.5 1.0 11.5 5.0 1.0 6.5 9.0 1.0 9.5 Data to output Propagation delay t PHL Data to output Output enable time Output enable time Output disable time Output disable time Note: t ZH t ZL t HZ t LZ ns ns ns ns ns 1. Voltage Range 3.3 is 3.3 V 0.3 V Voltage Range 5.0 is 5.0 V 0.5 V AC Characteristics: HD74ACT244 Ta = +25C CL = 50 pF Ta = -40C to +85C CL = 50 pF Item Symbol VCC (V)*1 Min Typ Max Min Max Unit Propagation delay Data to output t PLH 5.0 1.0 6.5 9.0 1.0 10.0 ns Propagation delay Data to output t PHL 5.0 1.0 7.0 9.0 1.0 10.0 ns Output enable time t ZH 5.0 1.0 6.0 8.5 1.0 9.5 ns Output enable time t ZL 5.0 1.0 7.0 9.5 1.0 10.5 ns Output disable time t HZ 5.0 1.0 7.0 9.5 1.0 10.5 ns Output disable time t LZ 5.0 1.0 7.5 10.0 1.0 10.5 ns Note: 1. Voltage Range 5.0 is 5.0 V 0.5 V 3 HD74AC244/HD74ACT244 Capacitance Item Symbol Typ Unit Condition Input capacitance CIN 4.5 pF VCC = 5.5 V Power dissipation capacitance CPD 45.0 pF VCC = 5.0 V 4 HD74AC244/HD74ACT244 Package Dimensions Unit: mm 24.50 25.40 Max 1 7.00 Max 11 6.30 20 10 1.30 2.54 0.25 0.48 0.10 0.51 Min 1.27 Max 7.62 2.54 Min 5.08 Max 0.89 + 0.11 0.25 - 0.05 0 - 15 Hitachi Code JEDEC EIAJ Mass (reference value) DP-20N -- Conforms 1.26 g Unit: mm 12.6 13 Max 11 1 10 1.27 *0.42 0.08 0.40 0.06 0.10 0.10 0.80 Max *0.22 0.05 0.20 0.04 2.20 Max 5.5 20 0.20 7.80 +- 0.30 1.15 0 - 8 0.70 0.20 0.15 0.12 M *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Mass (reference value) FP-20DA -- Conforms 0.31 g 5 HD74AC244/HD74ACT244 Unit: mm 12.8 13.2 Max 11 1 10 0.20 0.10 0.935 Max *0.27 0.05 0.25 0.04 2.65 Max 7.50 20 1.27 *0.42 0.08 0.40 0.06 0.25 10.40 +- 0.40 1.45 0 - 8 0.57 0.70 +- 0.30 0.15 0.12 M Hitachi Code JEDEC EIAJ Mass (reference value) *Dimension including the plating thickness Base material dimension FP-20DB Conforms -- 0.52 g Unit: mm 6.50 6.80 Max 11 1 10 4.40 20 0.65 *0.22+0.08 -0.07 0.20 0.06 1.0 0.13 M 6.40 0.20 *Dimension including the plating thickness Base material dimension 6 0.07 +0.03 -0.04 0.10 *0.17 0.05 0.15 0.04 1.10 Max 0.65 Max 0 - 8 0.50 0.10 Hitachi Code JEDEC EIAJ Mass (reference value) TTP-20DA -- -- 0.07 g HD74AC244/HD74ACT244 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. 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(Taipei Branch Office) 4/F, No. 167, Tun Hwa North Road, Hung-Kuo Building, Taipei (105), Taiwan Tel : <886>-(2)-2718-3666 Fax : <886>-(2)-2718-8180 Telex : 23222 HAS-TP URL : http://www.hitachi.com.tw 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 URL : http://www.hitachi.com.hk Copyright Hitachi, Ltd., 2000. All rights reserved. Printed in Japan. Colophon 2.0 7