HD74BC240A [HITACHI]
Octal Buffers/Line Drivers With 3 State Outputs; 八路缓冲器/线路驱动器，具有3态输出
| 型号： | HD74BC240A |
| 厂家： | 
HITACHI SEMICONDUCTOR |
| 描述： | Octal Buffers/Line Drivers With 3 State Outputs |
| 文件： | 总8页 (文件大小：42K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HD74BC240A
Octal Buffers/Line Drivers With 3 State Outputs
ADE-205-006A(Z)
2nd Edition
March 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
H
L
A
X
H
L
Output Y
Z
L
L
H
H :
High level
L
X
Z
:
:
:
Low level
Immaterial
High impedance
HD74BC240A
Pin Arrangement
20
19
18
17
16
15
14
13
12
11
VCC
2G
1
2
1G
1A1
1Y1
2A4
2Y4
1A2
2Y3
1A3
2Y2
3
4
1Y2
2A3
1Y3
2A2
1Y4
2A1
5
6
7
1A4
2Y1
8
9
GND
10
(Top view)
Absolute Maximum Ratings
Item
Symbol
VCC
Rating
Unit
V
Supply voltage
Input diode current
Input voltage
–0.5 to +7.0
±30
IIK
mA
V
VIN
–0.5 to +7.5
–0.5 to +7.5
–0.5 to +5.5
–65 to +150
Output voltage
Off state output voltage
Storage temperature
VOUT
VOUT(off)
Tstg
V
V
°C
Note: 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.
2
HD74BC240A
Recommended Operating Conditions
Item
Symbol
VCC
Min
4.5
0
Typ
5.0
—
Max
5.5
VCC
VCC
85
Unit
V
Supply voltage
Input voltage
VIN
V
Output voltage
Operating temperature
Input rise/fall time*1
VOUT
Topr
tr, tf
0
—
V
–40
0
—
°C
ns/V
—
8
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
1Y3
2A2
1Y4
1A3
2Y2
1A4
2A1
2Y1
3
HD74BC240A
Electrical Characteristics (Ta = –40°C to +85°C)
Item
Symbol
VIH
VCC(V)
Min
2.0
—
Max
—
Unit
V
Test Conditions
Input voltage
VIL
0.8
V
Output voltage
VOH
4.5
4.5
4.5
4.5
4.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
2.4
2.0
—
—
V
IOH = –3 mA
IOH = –15 mA
IOL = 48 mA
IOL = 64 mA
IIN = –18 mA
VIN = 0 V
—
V
VOL
0.5
V
—
0.55
–1.2
–250
1.0
V
Input diode voltage
Input current
VIK
II
—
V
—
µA
µA
µA
mA
µA
µA
mA
—
VIN = 5.5 V
VIN = 7.0 V
VIN = 0 or 5.5 V
VO = 2.7 V
—
100
–225
50
Short circuit output current*1
Off state output current
IOS
–100
—
IOZH
IOZL
ICCL
—
–50
27.5
VO = 0.5 V
Supply current
—
VIN = 0 or 5.5 V
All outputs is “L”
ICCH
5.5
5.5
5.5
—
—
—
2.5
2.5
1.5
mA
mA
mA
VIN = 0 or 5.5 V
All outputs is “H”
ICCZ
VIN = 0 or 5.5 V
All outputs is “Z”
2
ICCT
*
VIN = 3.4 or 0.5 V
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 ICC increase at per one input pin.
4
HD74BC240A
Switching Test Method (CL = 50 pF)
Ta = 25°C
CC = 5.0 V
Ta = –40 to 85°C
VCC = 5.0 V ±10%
V
Item
Symbol Min
Max
6.0
6.0
8.0
8.0
7.0
7.0
Min
3.0
3.0
3.0
3.0
3.0
3.0
—
Max
7.0
Unit Test Conditions
Propagation delay time
tPLH
tPHL
tZH
tZL
3.0
ns
ns
ns
See under figure
3.0
7.0
Output enable time
Output disable time
3.0
10.0
10.0
9.0
3.0
tHZ
tLZ
3.0
3.0
9.0
Input capacitanse
Output capacitance
CIN
CO
3.0(Typ)
15.0(Typ)
pF
pF
VIN = VCC or GND
VO = VCC or GND
—
Test Circuit
VCC
VCC
Output
*3
G
500 Ω
450 Ω
OPEN
7 V
1Y1
1A1
1A2
Input
CL =
50 pF
50 ΩScope
Pulse Generator
Zout
Ω
= 50
Output
1A3
1A4
Same as above
1Y2
load circuit
Same as above
load circuit
1Y3
1Y4
Same as above
load circuit
Notes:
1. CL includes probe and jig capacitance.
2. 2G, 2A1-2A4 to 2Y1-2Y4 are identical to above load circuit.
3. Open: tPLH, tPHL, tZH, tHZ
7 V: tZL, tLZ
5
HD74BC240A
Waveforms-1
t f
t r
3 V
90%
1.5 V
90%
1.5 V
Input A
10%
tPLH
10%
0 V
tPHL
VOH
1.5 V
1.5 V
Output Y
VOL
Notes:
1. tr = 2.5 ns, tf = 2.5 ns
2. Input waveform: PRR =1 MHz, duty cycle 50%
Waveforms-2
t f
t r
3 V
90%
1.5 V
10%
90%
Input G
1.5 V
10%
0 V
tZL
tLZ
3.5 V
Waveform–A
Waveform–B
1.5 V
1.5 V
VOL
+ 0.3 V
– 0.3 V
VOL
VOH
0 V
tZH
tHZ
VOH
Notes:
1. tr = 2.5 ns, tf = 2.5 ns
2. Input waveform: PRR = 1 MHz, duty cycle 50%
3. Waveform-A shows input conditions such that the output is “L” level when enable by the
output control.
4. Waveform-B shows input conditions such that the output is “H” level when enable by the
output control.
6
HD74BC240A
Package Dimensions
Unit: mm
7
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 fail-
safes, 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
: http:semiconductor.hitachi.com/
: http://www.hitachi-eu.com/hel/ecg
Asia (Singapore)
Asia (Taiwan)
: http://www.has.hitachi.com.sg/grp3/sicd/index.htm
: 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.
Hitachi Europe GmbH
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
Hitachi Asia Pte. Ltd.
16 Collyer Quay #20-00
Hitachi Tower
Singapore 049318
Tel: 535-2100
Electronic components Group
Dornacher Stra§e 3
D-85622 Feldkirchen, Munich
Germany
Tel: <49> (89) 9 9180-0
Fax: <49> (89) 9 29 30 00
179 East Tasman Drive,
San Jose,CA 95134
Tel: <1> (408) 433-1990
Fax: <1>(408) 433-0223
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
Telex: 40815 HITEC HX
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
Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan.
相关型号：
©2020 ICPDF网 联系我们和版权申明