HD74HCT74A Dual D–type Positive Edge–triggered Flip Flops with Clear and Preset ADE-205-290 (Z) 1st. Edition June 1999 Description The HD74HCT74A has independent data, preset, clear, and clock inputs Q and Q outputs in a 14 pin package. The logic level present at the data input is transferred to the output during the positive going transition of the clock pulse. Preset and clear are independent of the clock and accomplished by a low level at the appropriate input. Features • VCC = 4.5 to 5.5 V operation • Input terminal has protection diode Function Table Inputs Outputs PRE CLR CLK D Q Q L H X X H L H L X X L H *1 H *1 L L X X H H H ↑ H H L H H ↑ L L H H H L X Q0 Q0 H : High level L : Low level X : Immaterial ↑ : Low to high transition Q0 : Level to Q before the indicated steady state input conditions were established. Note : 1. Q and Q will remain high as long as preset and clear are low, but Q and Q are unpredictable, if preset and clear go high simultaneously. HD74HCT74A Pin Arrangement 14 VCC 1CLR 1 1D 2 13 2CLR 1CLK 3 12 2D 1PRE 4 11 2CLK 1Q 5 10 2PRE 1Q 6 9 2Q GND 7 8 2Q (Top view) Absolute Maximum Ratings Item Symbol Ratings Unit Supply voltage VCC –0.5 to 7.0 V Input diode peak current I IK ±20 mA Output diode peak current I OK ±20 mA Output current IO ±25 mA VCC, GND current / pin I CC or IGND ±50 mA Storage temperature Tstg –65 to 150 °C 2 HD74HCT74A Recommended Operating Conditions Item Symbol Min Typ Max Unit Supply voltage VCC 4.5 5.0 5.5 V Input voltage VIH 2.0 — — V VIL 0 — 0.8 VI 0 — VCC Output voltage VO 0 — VCC V Output current I OH — –4 — mA I OL — 4 — Input rise / fall time t r, t f — — 500 ns Operating temperature Ta –40 — 85 °C 3 HD74HCT74A Logic Diagram PRE C CLK C C Q TG D C C C TG TG TG C C C C Q CLR Electrical Characteristics Item Output voltage Symbol VCC (V) VOH VOL Ta = 25°C Ta = –40 to 85°C Unit Test Conditions Min Typ Max Min Max 4.5 4.40 — — 4.40 — 4.5 3.98 — — 3.84 — I O = –4 mA 4.5 — — 0.10 — 0.10 I O = 20 µA 4.5 — — 0.26 — 0.33 I O = 4 mA V I O = –20 µA Input current II 5.5 — ±0.1 ±100 — ±1000 nA VI = VCC or GND Quiescent supply voltage I CC 5.5 — — 4.0 — 40 µA VI = VCC or GND, IO = 0 4 HD74HCT74A Switching Characteristics (CL = 50 pF) Item Maximum clock Symbol VCC (V) f max frequency Ta = 25°C Ta = –40 to 85°C Unit Input Output FROM TO PRE, Q, Q Min Typ Max Min Max 4.5 27 78 — 22 — 5.5 30 92 — 24 — MHz Propagation t PLH 4.5 — 14 28 — 35 delay time t PHL 5.5 — 12 25 — 32 CLR 4.5 — 14 22 — 28 CLK 5.5 — 13 20 — 25 4.5 — 7 15 — 19 5.5 — 6 13 — 16 4.5 10 — — 13 — 5.5 9 — — 12 — 4.5 5 — — 5 — PRE, CLR 5.5 5 — — 5 — inactive 4.5 0 — — 0 — 5.5 0 — — 0 — 4.5 15 — — 19 — 5.5 14 — — 17 — Input capacitance CI — — 3 10 — 10 pF Power dissipation CPD capacitance — — 35 — — — pF Output rise / fall t r / tf time Setup time Hold time Pulse width t su th tw ns ns Q, Q Each output ns D ns ns 5 HD74HCT74A Test Circuit 1) f max , t PLH ,t PHL (CLK → Q, Q) VCC VCC Input PR Pulse Generator Zout = 50 Ω D CL Input Pulse Generator Zout = 50 Ω Output Q Q CLK CLR Output Q Q CL 2) t PLH ,t PHL (CLR or PR → Q, Q) Input VCC Pulse Generator Zout = 50 Ω PR D Q Output Q CL CLK Input Pulse Generator Zout = 50 Ω Notes: 1. C L includes probe and jig capacitance. 2. Test is put into the each flip flops. 6 Output Q Q CLR CL HD74HCT74A • Waveform tf Input CLR tr 3V 90 % 90 % 1.3 V 1.3 V 10 % 10 % 0V tw tf 90 % 1.3 V 10 % Input PR tr Input CLK t w (H) tf 90 % 1.3 V 10 % 90 % 1.3 V 10 % tr t PHL t w (L) 3V 90 % 1.3 V 10 % 0V tw 3V 90 % 1.3 V 10 % 1.3 V 1.3 V 1.3 V 0V t su (H) Input D tr t h (H) tf t su (L) t h (L) 3V 90 % 1.3 V 10 % t PLH 1.3 V 1.3 V 0V t PHL t PLH VOH Output Q 1.3 V 1.3 V 1.3 V 1.3 V VOL t PLH t PHL t PLH t PHL VOH Output Q 1.3 V 1.3 V 1.3 V 1.3 V VOL Note: 1. Input waveform : PRR = 1 MHz, duty cycle 50%, t r = 6 ns, t f = 6 ns 7 HD74HCT74A Package Dimensions Unit : mm 10.06 10.5 Max 8 5.5 14 1 0.10 ± 0.10 1.42 Max 1.27 0.42 ± 0.08 0.40 ± 0.06 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 8 0.22 ± 0.05 0.20 ± 0.04 2.20 Max 7 Hitachi Code JEDEC EIAJ Weight (reference value) FP-14DA — Conforms 0.23 g HD74HCT74A 4.40 5.00 5.30 Max 14 8 1 7 0.65 0.20 ± 0.06 1.0 0.13 M 6.40 ± 0.20 0.10 Dimension including the plating thickness Base material dimension 0.17 ± 0.05 0.15 ± 0.04 1.10 Max 0.83 Max 0.07 +0.03 –0.04 0.22 +0.08 –0.07 0° – 8° 0.50 ± 0.10 Hitachi Code JEDEC EIAJ Weight (reference value) TTP-14D — — 0.05 g 9 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. 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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.