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Número de pieza | HD74ALVCH16373 | |
Descripción | 16-bit Transparent D-type Latches with 3-state Outputs | |
Fabricantes | Hitachi Semiconductor | |
Logotipo | ||
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No Preview Available ! HD74ALVCH16373
16-bit Transparent D-type Latches with 3-state Outputs
ADE-205-138A (Z)
2nd. Edition
December 1999
Description
The HD74ALVCH16373 is particularly suitable for implementing buffer registers, I/O ports, bidirectional
bus drivers, and working registers. It can be used as two 8-bit latches or one 16-bit latch. When the latch
enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is taken low, the Q outputs
are latched at the levels set up at the D inputs. Active bus hold circuitry is provided to hold unused or
floating data inputs at a valid logic level.
Features
• VCC = 2.3 V to 3.6 V
• Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
• Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)
• Bus hold on data inputs eliminates the need for external pullup / pulldown resistors
Function Table
Inputs
Output Q
OE LE D
L HH
H
L HL
L
L LX
HXX
Q0 *1
Z
H : High level
L : Low level
X : Immaterial
Z : High impedance
Note: 1. Output level before the indicated steady state input conditions were established.
1 page HD74ALVCH16373
Electrical Characteristics (Ta = –40 to 85°C)
Item
Input voltage
Symbol VCC (V) *1
VIH 2.3 to 2.7
2.7 to 3.6
Min
1.7
2.0
Max Unit Test Conditions
—V
—
VIL 2.3 to 2.7 —
2.7 to 3.6 —
0.7
0.8
Output voltage
VOH Min to Max VCC–0.2 —
V IOH = –100 µA
2.3 2.0 —
IOH = –6 mA, VIH = 1.7 V
2.3 1.7 —
IOH = –12 mA, VIH = 1.7 V
2.7 2.2 —
IOH = –12 mA, VIH = 2.0 V
3.0 2.4 —
IOH = –12 mA, VIH = 2.0 V
3.0 2.0 —
IOH = –24 mA, VIH = 2.0 V
VOL Min to Max —
0.2
IOL = 100 µA
2.3 — 0.4
IOL = 6 mA, VIL = 0.7 V
2.3 — 0.7
IOL = 12 mA, VIL = 0.7 V
2.7 — 0.4
IOL = 12 mA, VIL = 0.8 V
3.0 — 0.55
IOL = 24 mA, VIL = 0.8 V
Input current
IIN 3.6
— ±5 µA VIN = VCC or GND
IIN (hold) 2.3
45 —
VIN = 0.7 V
2.3 –45 —
VIN = 1.7 V
3.0 75 —
VIN = 0.8 V
3.0 –75 —
VIN = 2.0 V
3.6 — ±500
VIN = 0 to 3.6 V
Off state output current *2 IOZ
3.6
— ±10 µA VOUT = VCC or GND
Quiescent supply current ICC
3.6
— 40 µA VIN = VCC or GND
∆ICC 3.0 to 3.6 —
750 µA VIN = one input at (VCC–0.6) V,
other inputs at VCC or GND
Notes: 1. For conditions shown as Min or Max, use the appropriate values under recommended operating
conditions.
2. For I / O ports, the parameter IOZ includes the input leakage current.
5
5 Page HD74ALVCH16373
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
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Japan
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: 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/index.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
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PDF Descargar | [ Datasheet HD74ALVCH16373.PDF ] |
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