HITACHI HD74BC541A

HD74BC541A
Octal Buffers/Line Drivers With 3 State Outputs
ADE-205-023 (Z)
Rev. 0
June 1993
Description
The HD74BC541A 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. When G1 and G2 is low level, this drivers set up output is enable.
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.
Input is TTL level.
Wide operating temperature range
Ta = –40 to +85°C
Function Table
Inputs
G1
G2
A
Output Y
L
L
L
L
L
L
H
H
H
X
X
Z
X
H
X
Z
H
L
X
Z
:
:
:
:
High level
Low level
Immaterial
High impedance
HD74BC541A
Pin Arrangement
G1
1
20
VCC
A1
2
19
G2
A2
3
18
Y1
A3
4
17
Y2
A4
5
16
Y3
A5
6
15
Y4
A6
7
14
Y5
A7
8
13
Y6
A8
9
12
Y7
GND
10
11
Y8
(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.
HD74BC541A
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
Ouput voltage
VOUT
0
—
VCC
V
Topr
–40
—
85
°C
t r , tf
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
G1
G2
A1
Y1
A2
Y2
A3
Y3
A4
Y4
A5
Y5
A6
Y6
A7
Y7
A8
Y8
3
HD74BC541A
Electrical Characteristics (Ta = –40 to +85°C)
Item
Symbol
Input voltage
VIH
VCC(V)
Min
Max
Unit
2.0
—
V
—
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
IL
V
Output voltage
VOH
VOL
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
—
29.5
mA
VIN = VCC or GND
All outputs is “L”
I CCH
5.5
—
0.5
mA
VIN = VCC or GND
All outputs is “H”
I CCZ
5.5
—
2.5
mA
VIN = VCC or GND
All outputs is “Z”
I CCT*2
5.5
—
1.5
mA
VIN = 3.4V or 0.5V
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
HD74BC541A
Switching Characteristics (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
9.0
3.0
11.0
t ZL
3.0
9.0
3.0
11.0
t HZ
3.0
8.0
3.0
10.0
t LZ
3.0
8.0
3.0
10.0
Input capacitance
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
Input
Pulse
Generator
Zout = 50Ω
See Function Table
G1
Output
*3
A1
500Ω
Y1
450Ω
CL =
50 pF
OPEN
7V
50Ω
Scope
G2
Notes:
1.
2.
3.
CL includes probe and jig capacitance.
A2-Y2 to A8-Y8 are identical to above load circuit.
Open: tPLH, t PHL , t ZH , t HZ
7V: tZL, t LZ
5
HD74BC541A
Waveforms-1
tr
tf
90 %
1.5 V
Input A
3V
90 %
1.5 V
10 %
10 %
0V
t PHL
t PLH
VOH
1.5 V
1.5 V
Output Y
VOL
Waveforms-2
tf
tr
90 %
1.5 V
10 %
Input G
3V
90 %
1.5 V
10 %
t LZ
t ZL
0V
3.5 V
Waveform – A
1.5 V
VOL + 0.3 V
t ZH
Waveform – B
t HZ
1.5 V
VOH – 0.3 V
VOL
VOH
0V
Notes:
1.
2.
3.
4.
6
t r = 2.5 ns, tf = 2.5 ns
Input waveforms: 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.
HD74BC541A
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 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 Stra§e 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.