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| HD74AC374/HD74ACT374 Octal D-Type Flip-Flops with 3-State Output Description The HD74AC374/HD74ACT374 is a high-speed, low-power octal D-type flip-flop featuring separate Dtype inputs for each flip-flop and 3-state outputs for bus-oriented applications. A buffered Clock (CP) and Output Enable (OE) are common to all flip-flops. Features * * * * * * * * * Buffered Positive Edge-Triggered Clock 3-State Outputs for Bus-Oriented Applications Outputs Source/Sink 24 mA See HD74AC273/HD74ACT273 for Reset Version See HD74AC373/HD74ACT373 for Transparent Latch Version See HD74AC574/HD74ACT574 for Broadside Pinout Version See HD74AC564/HD74ACT564 for Broadside Pinout Version with Inverted Outputs HD74ACT374 has TTL-Compatible Inputs HD74AC374/HD74ACT374 Pin Arrangement OE 1 O0 2 D0 3 D1 4 O1 5 O2 6 D2 7 D3 8 O3 9 Gnd 10 (Top view) 20 VCC 19 O7 18 D7 17 D6 16 O6 15 O5 14 D5 13 D4 12 O4 11 CP Logic Symbol D0 D1 D2 D3 D4 D5 D6 D7 CP OE O0 O1 O2 O3 O4 O5 O6 O7 Pin Names D0 - D7 CP OE O0 - O7 Data Inputs Clock Pulse Input 3-State Output Enable Input 3-State Outputs 2 HD74AC374/HD74ACT374 Functional Description The HD74AC374/HD74ACT374 consists of eight edge-triggered flip-flops with individual D-type inputs and 3-state true outputs. The buffered clock and buffered Output Enable are common to all flip-flops. The eight flip-flops will store the state of their individual D inputs that meet the setup and hold time requirements on the Low-to-High Clock (CP) transition. With the Output Enable (OE) Low, the contents of the eight flip-flops are available at the outputs. When the OE is High, the outputs go to the high impedance state. Operation of the OE input does not affect the state of the flip-flops. Truth Table Inputs Dn H L X H L X Z : : : : X High Voltage Level Low Voltage Level Immaterial High Impedance : Low-to-High Transition CP OE L L H Outputs On H L Z Logic Diagram D0 CP CP D Q Q CP D Q Q CP D Q Q CP D Q Q CP D Q Q CP D Q Q CP D Q Q CP D Q Q D1 D2 D3 D4 D5 D6 D7 OE O0 O1 O2 O3 O4 O5 O6 O7 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. 3 HD74AC374/HD74ACT374 DC Characteristics (unless otherwise specified) Item Maximum quiescent supply current Maximum quiescent supply current Maximum ICC/input (HD74ACT374) 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: HD74AC374 Ta = +25C CL = 50 pF Item Maximum clock frequency Propagation delay CP to On Propagation delay CP to On Output enable time t PZH t PHL t PLH Symbol f max VCC (V)*1 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 Output enable time t PZL 3.3 5.0 Output disable time t PHZ 3.3 5.0 Output disable time t PLZ 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 60 100 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Typ 110 155 11.0 8.0 10.0 7.0 9.5 7.0 9.0 6.5 10.5 8.0 8.0 6.5 Max -- -- 13.5 9.5 12.5 9.0 11.5 8.5 11.5 8.5 12.5 11.0 11.5 8.5 Ta = -40C to +85C CL = 50 pF Min 60 100 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Max -- -- 15.5 10.5 14.0 10.0 13.0 9.5 13.0 9.5 14.5 12.5 12.5 10.0 ns ns ns ns ns ns Unit MHz 4 HD74AC374/HD74ACT374 AC Operating Requirements: HD74AC374 Ta = +25C CL = 50 pF Item Setup time, HIGH or LOW Dn to CP Hold time, HIGH or LOW Dn to CP CP pulse width, HIGH or LOW t w Note: th Symbol t su VCC (V)*1 Typ 3.3 5.0 3.3 5.0 3.3 5.0 1. Voltage Range 3.3 is 3.3 V 0.3 V Voltage Range 5.0 is 5.0 V 0.5 V 2.0 1.0 -1.0 -4.0 4.0 2.5 Ta = -40C to +85C CL = 50 pF Guaranteed Minimum 5.5 4.0 1.0 1.5 5.5 4.0 6.0 4.5 1.0 1.5 6.0 4.5 ns ns Unit ns AC Characteristics: HD74ACT374 Ta = +25C CL = 50 pF Item Maximum clock frequency Propagation delay CP to On Propagation delay CP to On Output enable time Output enable time Output disable time Output disable time Note: Symbol f max t PLH t PHL t PZH t PZL t PHZ t PLZ VCC (V)*1 5.0 5.0 5.0 5.0 5.0 5.0 5.0 Min 100 1.0 1.0 1.0 1.0 1.0 1.0 Typ 160 8.5 8.0 8.0 8.0 8.5 7.0 Max -- 10.0 9.5 9.5 9.0 11.5 8.5 Ta = -40C to +85C CL = 50 pF Min 90 1.0 1.0 1.0 1.0 1.0 1.0 Max -- 11.5 11.0 10.5 10.5 12.5 10.0 Unit MHz ns ns ns ns ns ns 1. Voltage Range 5.0 is 5.0 V 0.5 V 5 HD74AC374/HD74ACT374 AC Operating Requirements: HD74ACT374 Ta = +25C CL = 50 pF Item Setup time, HIGH or LOW Dn to CP Hold time, HIGH or LOW Dn to CP Note: Symbol t su th VCC (V)*1 Typ 5.0 5.0 5.0 1.0 0.0 2.0 Ta = -40C to +85C CL = 50 pF Guaranteed Minimum 7.0 1.5 7.0 5.5 1.5 5.0 Unit ns ns ns CP pulse width, HIGH or LOW t w 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 80.0 Unit pF pF Condition VCC = 5.5 V VCC = 5.0 V 6 Unit: mm 24.50 25.40 Max 20 11 7.00 Max 6.30 1 0.89 1.27 Max 10 1.30 2.54 Min 5.08 Max 7.62 0.51 Min 2.54 0.25 0.48 0.10 0.25 - 0.05 0 - 15 + 0.11 Hitachi Code JEDEC EIAJ Weight (reference value) DP-20N -- Conforms 1.26 g Unit: mm 12.6 13 Max 20 11 1 10 5.5 0.80 Max 2.20 Max *0.22 0.05 0.20 0.04 0.20 7.80 + 0.30 - 1.15 0 - 8 0.70 0.20 1.27 *0.42 0.08 0.40 0.06 0.12 M *Dimension including the plating thickness Base material dimension 0.10 0.10 0.15 Hitachi Code JEDEC EIAJ Weight (reference value) FP-20DA -- Conforms 0.31 g Unit: mm 12.8 13.2 Max 20 11 7.50 1 0.935 Max 10 2.65 Max *0.27 0.05 0.25 0.04 0.25 10.40 + 0.40 - 1.45 0.20 0.10 0 - 8 0.57 0.70 + 0.30 - 1.27 *0.42 0.08 0.40 0.06 0.15 0.12 M Hitachi Code JEDEC EIAJ Weight (reference value) FP-20DB Conforms -- 0.52 g *Dimension including the plating thickness Base material dimension Unit: mm 6.50 6.80 Max 20 11 4.40 1 10 0.65 0.20 0.06 *0.22+0.08 -0.07 0.13 M 0.65 Max *0.17 0.05 0.15 0.04 1.10 Max 0.07 +0.03 -0.04 0 - 8 0.50 0.10 1.0 6.40 0.20 0.10 *Dimension including the plating thickness Base material dimension Hitachi Code JEDEC EIAJ Weight (reference value) TTP-20DA -- -- 0.07 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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