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HD74LVC244A
Octal Buffers / Line Drivers with 3-state Outputs
ADE-205-110B(Z) 3rd Edition December 1996 Description
The HD74LVC244A has eight line 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 four buffers. Low voltage and high speed operation is suitable at the battery drive product (note type personal computer) and low power consumption extends the life of a battery for long time operation.
Features
* * * * * * VCC = 2.0 V to 5.5 V All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V) All outputs VOUT (Max.) = 5.5 V (@VCC = 0 V or output off state) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25C) Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25C) High output current 24 mA (@VCC = 3.0 V to 5.5 V)
Function Table
Inputs G H L L H: L: X: Z: High level Low level Immaterial High impedance A X H L Output Y Z H L
HD74LVC244A
Pin Arrangement
1G 1 1A1 2 2Y4 3 1A2 4 2Y3 5 1A3 6 2Y2 7 1A4 8 2Y1 9 GND 10
20 VCC 19 2G 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 2A1
(Top view)
Absolute Maximum Ratings
Item Supply voltage Input diode current Input voltage Output diode current Symbol VCC I IK VI I OK Ratings -0.5 to 6.0 -50 -0.5 to 6.0 -50 50 Output voltage VO -0.5 to VCC +0.5 -0.5 to 6.0 Output current VCC, GND current / pin Storage temperature IO I CC or IGND Tstg 50 100 -65 to 150 Unit V mA V mA mA V V mA mA C VO = -0.5 V VO = VCC +0.5 V Output "H" or "L" Output "Z" VCC:OFF VI = -0.5 V Conditions
Note: 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.
2
HD74LVC244A
Recommended Operating Conditions
Item Supply voltage Symbol VCC Ratings 1.5 to 5.5 2.0 to 5.5 Input / output voltage VI VO 0 to 5.5 0 to V CC 0 to 5.5 Operating temperature Output current Ta I OH -40 to 85 -12 -24 I OL
*1 *2
Unit V V V V V C mA mA mA mA ns/V
Conditions Data retention At operation G, A Output "H" or "L" Output "Z" or VCC:OFF
VCC = 2.7 V VCC = 3.0 V to 5.5 V VCC = 2.7 V VCC = 3.0 V to 5.5 V
12 24
*2
Input rise / fall time
t r, t f
10
Notes: 1. This item guarantees maximum limit when one input switches. Waveform : Refer to test circuit of switching characteristics. 2. duty cycle 50%
3
HD74LVC244A
Electrical Characteristics
Ta = -40 to 85C Item Input voltage Symbol VCC (V) VIH Min Max -- Unit V V V I OH = -100 A I OH = -12 mA Test Conditions
2.7 to 3.6 2.0
4.5 to 5.5 VCCx0.7 -- VIL 2.7 to 3.6 -- 4.5 to 5.5 -- Output voltage VOH 0.8
VCCx0.3 V V V V V V V V V V A A A A A A VIN = 5.5 V or GND VIN = VCC, GND VOUT = 5.5 V or GND VIN / V OUT = 5.5 V VIN / V OUT = 3.6 to 5.5 V VIN = VCC or GND VIN = one input at (VCC -0.6)V, other inputs at V CC or GND I OL = 100 A I OL = 12 mA I OL = 24 mA I OH = -24 mA
2.7 to 5.5 VCC -0.2 -- 2.7 3.0 3.0 4.5 2.2 2.4 2.2 3.8 -- -- -- -- 0.2 0.4 0.55 0.55 5.0 5.0 20 10 10 500
VOL
2.7 to 5.5 -- 2.7 3.0 4.5 -- -- -- --
Input current Off state output current
I IN I OZ I OFF
0 to 5.5
2.7 to 5.5 --
Output leak current
0
--
Quiescent supply current I CC I CC
2.7 to 3.6 -- 2.7 to 5.5 -- 3.0 to 3.6 --
4
HD74LVC244A
Switching Characteristics
Ta = -40 to 85C Item Propagation delay time Symbol VCC (V) t PLH t PHL 2.7 3.30.3 5.00.5 Output enable time t ZH t ZL 2.7 3.30.3 5.00.5 Output disable time t ZH t LZ
*1
Min -- 1.5 -- -- 1.5 -- -- 1.5 -- -- -- -- -- --
Typ -- -- -- -- -- -- -- -- -- -- -- -- 3.0 15.0
Max 7.5 6.5 5.0 9.0 8.0 6.5 8.0 7.0 6.0 -- 1.0 1.0 -- --
Unit ns ns ns ns ns ns ns ns ns ns ns ns pF pF
From (Input) To (Output) A Y
G
Y
2.7 3.30.3 5.00.5
G
Y
Between outut pins skew
t OSLH t OSHL
2.7 3.30.3 5.00.5
Input capacitance Output capacitance Note:
CIN CO
2.7 2.7
1. This parameter is characterized but not tested. tosLH = | tPLHm - tPLHn |, tosHL = | tPHLm - tPHLn|
5
HD74LVC244A
Test Circuit
VCC VCC
1G, 2G See Function Table Input 1Y1 to 2Y4
Output 500 S1 CL = 50 pF 450 50 Scope OPEN See under table GND
*1
Pulse generator Zout = 50
1A1 to 2A4
Symbol t PLH / t PHL t ZH/ t HZ t ZL / t LZ
S1
Vcc=2.7V, 3.30.3V Vcc=5.00.5V
OPEN GND 6V
OPEN GND 2xVcc
Note:
1.
CL includes probe and jig capacitance.
Waveforms - 1
tr 90 % Input A Vref 10 % t PLH Vref 90 % Vref 10 % t PHL VOH Output Y Vref VOL Notes: 1. 2. t r = 2.5 ns, tf = 2.5 ns Input waveform : PRR = 10 MHz, duty cycle 50% tf VIH GND
6
HD74LVC244A
Waveforms - 2
tf Input G 90 % Vref 10 % t ZL Waveform - A t ZH Waveform - B Vref Vref t HZ VOH - 0.3 V tr 90 % Vref 10 % t LZ VIH GND V OH1 VOL + 0.3 V VOL VOH V OL1 TEST VIH Vref VOH1 VOL1 Notes: 1. 2. 3. 4.
Vcc=2.7V, 3.30.3V Vcc=5.00.5V
2.7 V 1.5 V 3V GND
Vcc 50%Vcc Vcc GND
tr = 2.5 ns, tf = 2.5 ns Input waveform : PRR = 10 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.
7
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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