HD74BC240A Octal Buffers/Line Drivers With 3 State Outputs ADE-205-006A (Z) 2nd. Edition Mar. 1993 Description The HD74BC240A provides high drivability and operation equal to or better than high speed bipolar standard logic IC by using Bi-CMOS process. The device features low power dissipation that is about 1/5 of high speed bipolar logic IC, when the frequency is 10 MHz. The device has eight inverter drivers with three state outputs in a 20 pin package. This device is a non inverting buffer and has two active low enables (1G and 2G). Each enable independently controls 4 buffers. Features • • • • Input/Output are at high impedance state when power supply is off. Built in input pull up circuit can make input pins be open, when not used. TTL level input Wide operating temperature range Ta = –40 to + 85°C Function Table Inputs G A Output Y H X Z L H L L L H H L X Z : : : : High level Low level Immaterial High impedance HD74BC240A Pin Arrangement 1G 1 20 VCC 1A1 2 19 2G 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) Absolute Maximum Ratings Item Symbol Rating Unit Supply voltage VCC –0.5 to +7.0 V Input diode current I IK ±30 mA Input voltage VIN –0.5 to +7.5 V Output voltage VOUT –0.5 to +7.5 V Off state output voltage VOUT(off) –0.5 to +5.5 V Storage temperature Tstg –65 to +150 °C Note: 2 1. The absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two of which may be realized at the same time. HD74BC240A Recommended Operating Conditions Item Symbol Min Typ Max Unit Supply voltage VCC 4.5 5.0 5.5 V Input voltage VIN 0 — VCC V Output voltage VOUT 0 — VCC V Topr –40 — 85 °C t r, t f 0 — 8 ns/V Operating temperature 1 Input rise/fall time* Note: 1. This item guarantees maximum limit when one input switches. Waveform: Refer to test circuit of switching characteristics. Logic Diagram 1G 2G 1A1 1Y1 2Y4 2A4 1A2 1Y2 2Y3 2A3 1A3 1Y3 2Y2 2A2 1A4 1Y4 2Y1 2A1 3 HD74BC240A Electrical Characteristics (Ta = –40°C to +85°C) Item Symbol Input voltage Output voltage Min Max Unit VIH 2.0 — V VIL — 0.8 V 4.5 2.4 — V I OH = –3 mA 4.5 2.0 — V I OH = –15 mA 4.5 — 0.5 V I OL = 48 mA 4.5 — 0.55 V I OL = 64 mA VOH VOL VCC(V) Test Conditions Input diode voltage VIK 4.5 — –1.2 V I IN = –18 mA Input current II 5.5 — –250 µA VIN = 0 V 5.5 — 1.0 µA VIN = 5.5 V 5.5 — 100 µA VIN = 7.0 V 1 Short circuit output current* I OS 5.5 –100 –225 mA VIN = 0 or 5.5 V Off state output current I OZH 5.5 — 50 µA VO = 2.7 V I OZL 5.5 — –50 µA VO = 0.5 V I CCL 5.5 — 27.5 mA VIN = 0 or 5.5 V All outputs is “L” I CCH 5.5 — 2.5 mA VIN = 0 or 5.5 V All outputs is “H” I CCZ 5.5 — 2.5 mA VIN = 0 or 5.5 V All outputs is “Z” I CCT*2 5.5 — 1.5 mA VIN = 3.4 or 0.5 V Supply current Notes: 1. Not more than one output should be shorted at a time and duration of the short circuit should not exceed one second. 2. When input by the TTL level, it shows I CC increase at per one input pin. 4 HD74BC240A Switching Test Method (CL = 50 pF) Ta = 25°C VCC = 5.0 V Ta = –40 to 85°C VCC = 5.0 V ±10% Item Symbol Min Max Min Max Unit Test Conditions Propagation delay time t PLH 3.0 6.0 3.0 7.0 ns See under figure t PHL 3.0 6.0 3.0 7.0 t ZH 3.0 8.0 3.0 10.0 t ZL 3.0 8.0 3.0 10.0 t HZ 3.0 7.0 3.0 9.0 t LZ 3.0 7.0 3.0 9.0 Input capacitanse CIN 3.0(Typ) — pF VIN = VCC or GND Output capacitance CO 15.0(Typ) — pF VO = VCC or GND Output enable time Output disable time ns ns Test Circuit VCC VCC Output *3 Input Pulse Generator Zout = 50 Ω See Function Table G 1A1 500 Ω 1Y1 CL = 50 pF 1A2 1. 2. 3. 7V 50 Ω Scope Output 1A3 1Y2 Same as above load circuit 1Y3 Same as above load circuit 1Y4 Same as above load circuit 1A4 Notes: 450 Ω OPEN CL includes probe and jig capacitance. 2G, 2A1-2A4 to 2Y1-2Y4 are identical to above load circuit. Open: tPLH, t PHL , t ZH , t HZ 7 V: t ZL, t LZ 5 HD74BC240A Waveforms-1 tf tr 90% Input A 90% 1.5 V 3V 1.5 V 10% 10% 0V t PLH t PHL VOH 1.5 V Output Y 1.5 V VOL Notes: 1. 2. t r = 2.5 ns, tf = 2.5 ns Input waveform: PRR =1 MHz, duty cycle 50% Waveforms-2 tf tr 90% 1.5 V Input G 90% 1.5 V 10% 10% 3V 0V t ZL t LZ 3.5 V 1.5 V Waveform–A VOL + 0.3 V t ZH VOH – 0.3 V Waveform–B VOL t HZ VOH 1.5 V 0V Notes: 1. 2. 3. 4. 6 t r = 2.5 ns, tf = 2.5 ns Input waveform: PRR = 1 MHz, duty cycle 50% Waveform-A shows input conditions such that the output is “L” level when enable by the output control. Waveform-B shows input conditions such that the output is “H” level when enable by the output control. HD74BC240A 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 7 HD74BC240A 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 8 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 HD74BC240A 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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