 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| HD74HCT242/HD74HCT243 Quad. Bus Transceivers (with 3-state outputs) Description The HD74HCT242 is an inverting buffer and the HD74HCT243 is a noninverting buffer. Each device has one active high enable (GBA), and one active low enable (GAB). GBA enables the A outputs and GAB enables the B outputs. The device does not have schmitt trigger inputs. Features * * * * * * LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility High Speed Operation: tpd (A to Y) = 9.5 ns typ (C L = 50 pF) High Output Current: Fanout of 15 LSTTL Loads Wide Operating Voltage: VCC = 4.5 to 5.5 V Low Input Current: 1 A max Low Quiescent Supply Current: ICC (static) = 4 A max (Ta = 25C) Function Table HD74HCT242 Control Inputs GAB H L H L I O O Z : : : : GBA H H L L Input Output Inverting Output High Impedance Data Port Status A O Z Z I B I Z Z O HD74HCT243 Data Port Status A O Z Z I B I Z Z O HD74HCT242/HD74HCT243 Pin Arrangement GAB NC 1A 2A 3A 4A GND 1 2 3 4 5 6 7 14 VCC 13 GBA 12 NC 11 1B 10 2B 9 8 3B 4B (Top view) Block Diagram HD74HCT242 VCC A 1 of 4 Transceivers VCC B GBA GAB 2 HD74HCT242/HD74HCT243 HD74HCT243 VCC A 1 of 4 Transceivers VCC B GBA GAB Absolute Maximum Ratings Item Supply voltage range Input voltage Output voltage DC current drain per pin DC current drain per VCC, GND DC input diode current DC output diode current Power dissipation per package Storage temperature Symbol VCC VIN VOUT I OUT I CC, I GND I IK I OK PT Tstg Rating -0.5 to +7.0 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 35 75 20 20 500 -65 to +150 Unit V V V mA mA mA mA mW C 3 HD74HCT242/HD74HCT243 DC Characteristics Ta = 25C Item Input voltage Symbol VIH VIL Output voltage VOH Ta = -40 to +85C Max -- 0.8 -- -- 0.1 0.33 5.0 1.0 40 A A A V Unit V V V Test Conditions VCC (V) 4.5 to 5.5 4.5 to 5.5 4.5 4.5 4.5 4.5 5.5 5.5 5.5 Vin = VIH or VIL I OH = -20 A I OH = -6 mA Vin = VIH or VIL I OL = 20 A I OL = 6 mA Vin = VIH or VIL, Vout = VCC or GND Vin = VCC or GND Vin = VCC or GND, Iout = 0 A Min Typ Max Min 2.0 -- 4.4 -- -- -- -- 2.0 0.8 -- -- -- 4.4 4.13 4.18 -- VOL -- -- Off-state output current Input current I OZ Iin -- -- -- -- -- -- -- -- 0.1 -- 0.26 -- 0.5 -- 0.1 -- 4.0 -- Quiescent current I CC AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns) Ta = 25C Item Symbol Ta = -40 to +85C Max 22 22 38 38 38 38 15 10 ns pF ns ns Unit ns Test Conditions VCC (V) 4.5 4.5 4.5 4.5 4.5 4.5 4.5 -- Min Typ Max Min -- -- -- -- -- -- -- -- 10 9 14 13 16 17 4 5 18 18 30 30 30 30 12 10 -- -- -- -- -- -- -- -- Propagation delay t PHL time Output enable time Output disable time Output rise/fall time Input capacitance t PLH t ZL t ZH t LZ t HZ t TLH t THL Cin 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 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. |
Price & Availability of HD74HCT242
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |