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PDF HD74HC299 Data sheet ( Hoja de datos )
| Número de pieza | HD74HC299 | |
| Descripción | 8-bit Universal Shift/Storage Register (with 3-state outputs) | |
| Fabricantes | Hitachi Semiconductor | |
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HD74HC299
8-bit Universal Shift/Storage Register (with 3-state outputs)
Description
The HD74HC299 features multiplexed inputs/outputs to achieve full 8-bit data handling in a single 20-pin
package. Due to the large output drive capability and 3-state feature, this device is ideally suited for
interfacing with bus lines in a bus oriented system. Two function select inputs and two output control
inputs are used to choose the mode of operation as listed in the function table. Synchronous parallel
loading is accomplished by taking both function select lines S0 and S1 high. This places the 3-state outputs
in a high impedance state, which permits data applied to the input/output lines to be clocked into the
register. Reading out of the register can be done while the outputs are enabled in any mode. A direct
overriding clear input is provided to clear the register whether the outputs are enabled or disabled.
Features
• High Speed Operation
• High Output Current: Fanout of 15 LSTTL Loads
• Wide Operating Voltage: VCC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)
1 page  
HD74HC299
DC Characteristics
Ta = 25°C
Ta = –40 to
+85°C
Item
Input voltage
Symbol
VIH
VCC (V)
2.0
4.5
Min Typ Max Min
1.5 — — 1.5
3.15 — — 3.15
Max
—
—
Unit Test Conditions
V
6.0 4.2 — — 4.2 —
VIL 2.0 — — 0.5 — 0.5 V
4.5 — — 1.35 — 1.35
6.0 — — 1.8 — 1.8
Output voltage
VOH
2.0 1.9 2.0 — 1.9 — V Vin = VIH or VIL IOH = –20 µA
4.5 4.4 4.5 — 4.4 —
6.0 5.9 6.0 — 5.9 —
4.5 4.18 — — 4.13 —
QA’ & QH’
IOH = –4 mA
6.0 5.68 — — 5.63 —
Outputs
IOH = –5.2 mA
4.5 4.18 — — 4.13 —
A/QA thru
IOH = –6 mA
6.0 5.68 — — 5.63 —
H/QH Outputs IOH = –7.8 mA
VOL 2.0 — 0.0 0.1 — 0.1 V Vin = VIH or VIL IOL = 20 µA
4.5 — 0.0 0.1 — 0.1
6.0 — 0.0 0.1 — 0.1
Off-state output
current
Input current
Quiescent supply
current
I OZ
Iin
I CC
4.5 — — 0.26 — 0.33
QA’ & QH’
IOH = 4 mA
6.0 — — 0.26 — 0.33
Outputs
IOH = 5.2 mA
4.5 — — 0.26 — 0.33
A/QA thru
IOH = 6 mA
6.0 — — 0.26 — 0.33
H/QH Outputs IOH = 7.8 mA
6.0 — — ±0.5 — ±5.0 µA Vin = VIH or VIL,
Vout = VCC or GND
6.0 — — ±0.1 — ±1.0 µA Vin = VCC or GND
6.0 — — 4.0 — 40 µA Vin = VCC or GND, Iout = 0 µA
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 | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet HD74HC299.PDF ] | |
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