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PDF HD74AC195 Data sheet ( Hoja de datos )
| Número de pieza | HD74AC195 | |
| Descripción | 4-bit Parallel-Access Shift Register | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD74AC195
4-bit Parallel-Access Shift Register
Description
This shift register features parallel inputs, parallel outputs, J-K serial inputs, Shift/Load control input, and a
direct overriding clear. This shift register can operate in two modes: Parallel load; Shift from Q0 towards
Q3.
Parallel loading is accomplished by applying the four bits of data, and taking the PE Input low. The data is
loaded into the associated flip-flops and appears at the outputs after the positive transition of the CP input.
During parallel loading, serial data flow is inhibited. Serial shifting occurs synchronously when the PE
input is high. Serial data for this mode is entered at the J-K inputs. These inputs allow the first stage to
perform as a J-K or toggle flip-flop as shown in the function table.
Features
• Shift Right and Parallel Load Capability
• J-K (D-Type) Inputs to First Stage
• Complement Output from Last Stage
• Asynchronous Master Reset
• Outputs Source/Sink 24 mA
1 page  
HD74AC195
AC Characteristics: HD74AC195
Item
Maximum clock
frequency
Symbol
f max
VCC (V)*1
3.3
5.0
Ta = +25°C
CL = 50 pF
Min Typ
75 —
100 —
Propagation delay
t PLH
3.3
CP to Qn or Q3
5.0
Propagation delay
t PHL
3.3
CP to Qn or Q2
5.0
Propagation delay
t PLH
3.3
MR to Q2
5.0
Propagaion delay tPHL 3.3
MR to Qn
5.0
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
9.0
5.5
9.0
6.5
7.5
5.5
6.0
5.0
Max
—
—
13.0
10.0
13.0
10.0
10.5
8.0
9.0
7.0
Ta = –40°C to +85°C
CL = 50 pF
Min Max
65 —
85 —
1.0 15.0
1.0 11.5
1.0 15.0
1.0 11.5
1.0 12.0
1.0 9.5
1.0 10.5
1.0 8.0
Unit
MHz
ns
ns
ns
ns
AC Operating Requirements: HD74AC195
Item
Setup time, HIGH or LOW
J, K or Dn to CP
Hold time, HIGH or LOW
J, K or Dn to CP
Setup time, HIGH or LOW
PE to CP
Symbol
t su
Ta = +25°C
CL = 50 pF
VCC (V)*1 Typ
3.3 3.0
5.0 2.0
th 3.3 –0.5
5.0 0.5
tsu 3.3 3.5
5.0 2.5
Hold time, HIGH or LOW
PE to CP
th
3.3 –2.0
5.0 –1.5
Recovery time
MR to CP
trec 3.3 –1.5
5.0 –1.0
Pulse width
tw 3.3 –3.0
5.0 –3.0
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
Ta = –40°C
to +85°C
CL = 50 pF
Guaranteed Minimum
5.5 7.0
4.0 5.0
2.0 3.6
1.5 2.0
5.0 7.0
4.0 5.0
0.0 0.0
0.0 0.0
0.5 0.5
0.5 0.5
5.5 7.0
4.5 5.0
Unit
ns
ns
ns
ns
ns
ns
5
5 Page 
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
Asia (Singapore)
Asia (Taiwan)
Asia (HongKong)
Japan
: http:semiconductor.hitachi.com/
: http://www.hitachi-eu.com/hel/ecg
: http://www.has.hitachi.com.sg/grp3/sicd/index.htm
: http://www.hitachi.com.tw/E/Product/SICD_Frame.htm
: http://www.hitachi.com.hk/eng/bo/grp3/index.htm
: 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.
Hitachi Asia (Hong Kong) Ltd.
16 Collyer Quay #20-00
Group III (Electronic Components)
Hitachi Tower
7/F., North Tower, World Finance Centre,
Singapore 049318
Harbour City, Canton Road, Tsim Sha Tsui,
Tel: 535-2100
Kowloon, Hong Kong
Fax: 535-1533
Tel: <852> (2) 735 9218
Fax: <852> (2) 730 0281
Hitachi Asia Ltd.
Telex: 40815 HITEC HX
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
Copyright ' Hitachi, Ltd., 1999. All rights reserved. Printed in Japan.
11 Page | ||
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| PDF Descargar | [ Datasheet HD74AC195.PDF ] | |
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