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PDF HEF4028B Data sheet ( Hoja de datos )
| Número de pieza | HEF4028B | |
| Descripción | BCD to decimal decoder | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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HEF4028B
BCD to decimal decoder
Rev. 8 — 17 November 2011
Product data sheet
1. General description
The HEF4028B is a 4-bit BCD to decimal decoder, a 4-bit BCO to octal decoder with
active LOW enable or an 8-output (Y0 to Y7) inverting demultiplexer. The outputs are fully
buffered for best performance.
When used as a BCD to decimal decoder a 1-2-4-8 BCD code applied to inputs A0 to A3
causes the selected output to be HIGH. The other nine outputs will be LOW.
To use the HEF4028B as a BCO to octal decoder, input A3 is an active LOW enable pin
and outputs Y8 and Y9 are not used. A 1-2-4 BCO code applied to inputs A0 to A2 causes
the selected output (Y0 to Y7) to be HIGH. The other seven outputs will be LOW. When
A3 is HIGH outputs (Y0 to Y7) will be forced LOW.
When used as an 8-output (Y0 to Y7) inverting demultiplexer A0 to A2 are used as
address inputs and A3 is the data input. Outputs Y8 and Y9 are not used.
It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS
(usually ground). Unused inputs must be connected to VDD, VSS, or another input.
2. Features and benefits
Fully static operation
5 V, 10 V, and 15 V parametric ratings
Standardized symmetrical output characteristics
Specified from 40 C to +85 C
Complies with JEDEC standard JESD 13-B
3. Ordering information
Table 1. Ordering information
All types operate from 40 C to +85 C.
Type number Package
Name Description
HEF4028BP DIP16 plastic dual in-line package; 16 leads (300 mil)
HEF4028BT SO16 plastic small outline package; 16 leads; body width 3.9 mm
Version
SOT38-4
SOT109-1
1 page  
NXP Semiconductors
HEF4028B
BCD to decimal decoder
9. Static characteristics
Table 6. Static characteristics
VSS = 0 V; VI = VSS or VDD.
Symbol Parameter
Conditions
VIH HIGH-level input voltage IO < 1 A
VIL LOW-level input voltage IO < 1 A
VOH HIGH-level output voltage IO < 1 A
VOL LOW-level output voltage IO < 1 A
IOH HIGH-level output current VO = 2.5 V
VO = 4.6 V
VO = 9.5 V
VO = 13.5 V
IOL LOW-level output current VO = 0.4 V
VO = 0.5 V
VO = 1.5 V
II input leakage current
IDD supply current
IO = 0 A
CI input capacitance
10. Dynamic characteristics
VDD
5V
10 V
15 V
5V
10 V
15 V
5V
10 V
15 V
5V
10 V
15 V
5V
5V
10 V
15 V
5V
10 V
15 V
15 V
5V
10 V
15 V
-
Tamb = 40 C
Min Max
3.5 -
7.0 -
11.0 -
- 1.5
- 3.0
- 4.0
4.95 -
9.95 -
14.95 -
- 0.05
- 0.05
- 0.05
- 1.7
- 0.52
- 1.3
- 3.6
0.52 -
1.3 -
3.6 -
- 0.3
- 20
- 40
- 80
--
Tamb = 25 C
Min Max
3.5 -
7.0 -
11.0 -
- 1.5
- 3.0
- 4.0
4.95 -
9.95 -
14.95 -
- 0.05
- 0.05
- 0.05
- 1.4
- 0.44
- 1.1
- 3.0
0.44 -
1.1 -
3.0 -
- 0.3
- 20
- 40
- 80
- 7.5
Tamb = 85 C Unit
Min Max
3.5 - V
7.0 - V
11.0 - V
- 1.5 V
- 3.0 V
- 4.0 V
4.95 - V
9.95 - V
14.95 - V
- 0.05 V
- 0.05 V
- 0.05 V
- 1.1 mA
- 0.36 mA
- 0.9 mA
- 2.4 mA
0.36 - mA
0.9 - mA
2.4 - mA
- 1.0 A
- 150 A
- 300 A
- 600 A
- - pF
Table 7. Dynamic characteristics
VSS = 0 V; Tamb = 25 C.
Symbol Parameter
Conditions
tPHL HIGH to LOW
An to Yn;
propagation delay see Figure 4
tPLH LOW to HIGH
An to Yn;
propagation delay see Figure 4
VDD
5V
10 V
15 V
5V
10 V
15 V
Extrapolation formula
[1] 73 ns + (0.55 ns/pF)CL
29 ns + (0.23 ns/pF)CL
22 ns + (0.16 ns/pF)CL
[1] 63 ns + (0.55 ns/pF)CL
29 ns + (0.23 ns/pF)CL
22 ns + (0.16 ns/pF)CL
Min Typ Max Unit
- 100 200 ns
- 40 80 ns
- 30 60 ns
- 90 180 ns
- 40 80 ns
- 30 60 ns
HEF4028B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 17 November 2011
© NXP B.V. 2011. All rights reserved.
5 of 13
5 Page 
NXP Semiconductors
HEF4028B
BCD to decimal decoder
15. Legal information
15.1 Data sheet status
Document status[1][2]
Objective [short] data sheet
Preliminary [short] data sheet
Product [short] data sheet
Product status[3]
Development
Qualification
Production
Definition
This document contains data from the objective specification for product development.
This document contains data from the preliminary specification.
This document contains the product specification.
[1] Please consult the most recently issued document before initiating or completing a design.
[2] The term ‘short data sheet’ is explained in section “Definitions”.
[3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nxp.com.
15.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
NXP Semiconductors and its customer, unless NXP Semiconductors and
customer have explicitly agreed otherwise in writing. In no event however,
shall an agreement be valid in which the NXP Semiconductors product is
deemed to offer functions and qualities beyond those described in the
Product data sheet.
15.3 Disclaimers
Limited warranty and liability — Information in this document is believed to
be accurate and reliable. However, NXP Semiconductors does not give any
representations or warranties, expressed or implied, as to the accuracy or
completeness of such information and shall have no liability for the
consequences of use of such information.
In no event shall NXP Semiconductors be liable for any indirect, incidental,
punitive, special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal or
replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Notwithstanding any damages that customer might incur for any reason
whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards
customer for the products described herein shall be limited in accordance
with the Terms and conditions of commercial sale of NXP Semiconductors.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in life support, life-critical or
safety-critical systems or equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. NXP Semiconductors accepts no liability for inclusion and/or use of
NXP Semiconductors products in such equipment or applications and
therefore such inclusion and/or use is at the customer’s own risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and operation of their applications
and products using NXP Semiconductors products, and NXP Semiconductors
accepts no liability for any assistance with applications or customer product
design. It is customer’s sole responsibility to determine whether the NXP
Semiconductors product is suitable and fit for the customer’s applications and
products planned, as well as for the planned application and use of
customer’s third party customer(s). Customers should provide appropriate
design and operating safeguards to minimize the risks associated with their
applications and products.
NXP Semiconductors does not accept any liability related to any default,
damage, costs or problem which is based on any weakness or default in the
customer’s applications or products, or the application or use by customer’s
third party customer(s). Customer is responsible for doing all necessary
testing for the customer’s applications and products using NXP
Semiconductors products in order to avoid a default of the applications and
the products or of the application or use by customer’s third party
customer(s). NXP does not accept any liability in this respect.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those given in
the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
Terms and conditions of commercial sale — NXP Semiconductors
products are sold subject to the general terms and conditions of commercial
sale, as published at http://www.nxp.com/profile/terms, unless otherwise
agreed in a valid written individual agreement. In case an individual
agreement is concluded only the terms and conditions of the respective
agreement shall apply. NXP Semiconductors hereby expressly objects to
applying the customer’s general terms and conditions with regard to the
purchase of NXP Semiconductors products by customer.
No offer to sell or license — Nothing in this document may be interpreted or
construed as an offer to sell products that is open for acceptance or the grant,
conveyance or implication of any license under any copyrights, patents or
other industrial or intellectual property rights.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
HEF4028B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 17 November 2011
© NXP B.V. 2011. All rights reserved.
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