HD74HC138 3-to-8-line Decoder/Demultiplexer ADE-205-444 (Z) 1st. Edition Sep. 2000 Description The HD74HC138 has 3 binary select inputs (A, B and C). If the device is enabled these inputs determine which one of the eight normally high outputs will go low. Two active low and one active high enables (G1, G2A and G2B) are provided to ease the cascading of decoders. Features * * * * * High Speed Operation: tpd (A, B, C to Y) = 16.5 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 V to 6 V Low Input Current: 1 A max Low Quiescent Supply Current: ICC (static) = 4 A max (Ta = 25C) Function Table Inputs Enable Select Outputs G1 G2A G2B C B A Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 X X H X X X H H H H H H H H X H X X X X H H H H H H H H L X X X X X H H H H H H H H H L L L L L L H H H H H H H H L L L L H H L H H H H H H H L L L H L H H L H H H H H H L L L H H H H H L H H H H H L L H L L H H H H L H H H H L L H L H H H H H H L H H H L L H H L H H H H H H L H H L L H H H H H H H H H H L HD74HC138 Pin Arrangement A 1 Select Inputs Enable Inputs Output 16 VCC B 2 B C 3 A Y0 15 Y0 C Y1 14 Y1 G2A 4 G2A Y2 13 Y2 G2B 5 G2B Y3 12 Y3 G1 6 G1 Y4 11 Y4 Y7 7 Y7 Y5 10 Y5 Y6 GND 8 9 Y6 (Top view) 2 Outputs HD74HC138 DC Characteristics Ta = -40 to +85C Ta = 25C Item Symbol VCC (V) Min Typ Max Min Max Unit Input voltage VIH 2.0 1.5 -- -- 1.5 -- V 4.5 3.15 -- -- 3.15 -- 6.0 4.2 -- -- 4.2 -- 2.0 -- -- 0.5 -- 0.5 4.5 -- -- 1.35 -- 1.35 6.0 -- -- 1.8 -- 1.8 2.0 1.9 2.0 -- 1.9 -- 4.5 4.4 4.5 -- 4.4 -- 6.0 5.9 6.0 -- 5.9 -- 4.5 4.18 -- -- 4.13 -- I OH = -4 mA 6.0 5.68 -- -- 5.63 -- I OH = -5.2 mA 2.0 -- 0.0 0.1 -- 0.1 4.5 -- 0.0 0.1 -- 0.1 6.0 -- 0.0 0.1 -- 0.1 4.5 -- -- 0.26 -- 0.33 I OL = 4 mA 6.0 -- -- 0.26 -- 0.33 I OL = 5.2 mA VIL Output voltage VOH VOL Test Conditions V V V Vin = VIH or VIL I OH = -20 A Vin = VIH or VIL I OL = 20 A Input current Iin 6.0 -- -- 0.1 -- 1.0 A Vin = VCC or GND Quiescent supply current I CC 6.0 -- -- 4.0 40 A Vin = VCC or GND, Iout = 0 A -- 3 HD74HC138 AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns) Ta = -40 to +85C Ta = 25C VCC (V) Min Typ Max Min Max Unit Test Conditions Propagation delay t PHL 2.0 -- -- 175 -- 220 ns A, B or C to Output time 4.5 -- 17 35 -- 44 6.0 -- -- 30 -- 37 2.0 -- -- 150 -- 190 4.5 -- 16 30 -- 38 6.0 -- -- 26 -- 33 2.0 -- -- 150 -- 190 4.5 -- 16 30 -- 38 6.0 -- -- 26 -- 33 2.0 -- -- 150 -- 190 4.5 -- 17 30 -- 38 6.0 -- -- 26 -- 33 2.0 -- -- 175 -- 220 4.5 -- 15 35 -- 44 6.0 -- -- 30 -- 37 2.0 -- -- 150 -- 190 4.5 -- 17 30 -- 38 6.0 -- -- 26 -- 33 Item Symbol t PLH t PHL t PLH t PHL t PLH Output rise/fall t TLH 2.0 -- -- 75 -- 95 time t THL 4.5 -- 5 15 -- 19 6.0 -- -- 13 -- 16 -- -- 5 10 -- 10 Input capacitance 4 Cin ns ns G1 to Output ns ns ns ns pF G2A or G2B to Output HD74HC138 Package Dimensions Unit: mm 19.20 20.00 Max 6.30 9 1 7.40 Max 16 8 1.3 0.48 0.10 7.62 2.54 Min 5.06 Max 2.54 0.25 0.51 Min 1.11 Max + 0.13 0.25 - 0.05 0 - 15 Hitachi Code JEDEC EIAJ Mass (reference value) DP-16 Conforms Conforms 1.07 g Unit: mm 10.06 10.5 Max 9 1 8 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 16 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-16DA -- Conforms 0.24 g 5 HD74HC138 Unit: mm 9.9 10.3 Max 9 1 8 *0.42 0.08 0.40 0.06 *0.22 0.03 0.20 0.03 0.635 Max + 0.11 1.27 0.14 - 0.04 1.75 Max 3.95 16 + 0.10 6.10 - 0.30 1.08 0 - 8 0.67 0.60 +- 0.20 0.15 0.25 M Hitachi Code JEDEC EIAJ Mass (reference value) *Dimension including the plating thickness Base material dimension FP-16DN Conforms Conforms 0.15 g Unit: mm 4.40 5.00 5.30 Max 16 9 1 8 0.65 1.10 Max 0.65 Max 0.10 *Dimension including the plating thickness Base material dimension 6 6.40 0.20 0.07 +0.03 -0.04 0.20 0.06 1.0 0.13 M *0.17 0.05 0.15 0.04 0.08 *0.22 +- 0.07 0 - 8 0.50 0.10 Hitachi Code JEDEC EIAJ Mass (reference value) TTP-16DA -- -- 0.05 g HD74HC138 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 Europe Asia Japan : : : : http://semiconductor.hitachi.com/ http://www.hitachi-eu.com/hel/ecg http://sicapac.hitachi-asia.com 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 Asia Ltd. Hitachi Tower 16 Collyer Quay #20-00, Singapore 049318 Tel : <65>-538-6533/538-8577 Fax : <65>-538-6933/538-3877 URL : http://www.hitachi.com.sg Hitachi Europe Ltd. Electronic Components Group. Whitebrook Park Lower Cookham Road Maidenhead Berkshire SL6 8YA, United Kingdom Tel: <44> (1628) 585000 Fax: <44> (1628) 585160 Hitachi Asia Ltd. (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