1. General description The 74VHC245; 74VHCT245 are high-speed Si-gate CMOS devices. The 74VHC245; 74VHCT245 are octal transceivers featuring non-inverting 3-state bus compatible outputs in both send and receive directions. The 74VHC245; 74VHCT245 feature an output enable input ( OE), for easy cascading, and a send and receive direction control input (DIR). OE controls the outputs so that the buses are effectively isolated. 2. Features ■ Balanced propagation delays ■ All inputs have Schmitt-trigger action ■ Inputs accept voltages higher than V CC ■ Input levels: ◆ The 74VHC245 operates with CMOS input level ◆ The 74VHCT245 operates with TTL input level ■ ESD protection: ◆ HBM JESD22-A114E exceeds 2000 V ◆ MM JESD22-A115-A exceeds 200 V ◆ CDM JESD22-C101C exceeds 1000 V ■ Multiple package options ■ Specified from -40 °C to +85 °C and from -40 °C to +125 °C 3. Ordering information 74VHC245; 74VHCT245 Octal bus transceiver; 3-state Rev. 01 — 25 August 2009 Product data sheet Table 1. Ordering information Type number Package Temperature range Name Description Version 74VHC245D -40 °C to +125 °C SO20 plastic small outline package; 20 leads; body width 7.5 mm SOT163-1 74VHCT245D 74VHC245PW -40 °C to +125 °C TSSOP20 plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT360-1 74VHCT245PW 74VHC245BQ -40 °C to +125 °C DHVQFN20 plastic dual-in-line compatible thermal enhanced very thin quad flat package; no leads; 20 terminals; body 2.5 × 4.5 × 0.85 mm SOT764-1 74VHCT245BQ
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74VHC245; 74VHCT245 Octal bus transceiver; 3-state74VHC_VHCT245_1 Product data sheet Rev. 01 — 25 August 2009 3 of 16 Nexperia 74VHC245; 74VHCT245 Octal bus transceiver; 3-state
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1. General description
The 74VHC245; 74VHCT245 are high-speed Si-gate CMOS devices.
The 74VHC245; 74VHCT245 are octal transceivers featuring non-inverting 3-state buscompatible outputs in both send and receive directions.
The 74VHC245; 74VHCT245 feature an output enable input (OE), for easy cascading,and a send and receive direction control input (DIR).
OE controls the outputs so that the buses are effectively isolated.
2. Features
n Balanced propagation delays
n All inputs have Schmitt-trigger action
n Inputs accept voltages higher than VCC
n Input levels:
u The 74VHC245 operates with CMOS input level
u The 74VHCT245 operates with TTL input level
n ESD protection:
u HBM JESD22-A114E exceeds 2000 V
u MM JESD22-A115-A exceeds 200 V
u CDM JESD22-C101C exceeds 1000 V
n Multiple package options
n Specified from −40 °C to +85 °C and from −40 °C to +125 °C
3. Ordering information
74VHC245; 74VHCT245Octal bus transceiver; 3-stateRev. 01 — 25 August 2009 Product data sheet
Table 1. Ordering information
Type number Package
Temperature range Name Description Version
74VHC245D −40 °C to +125 °C SO20 plastic small outline package; 20 leads;body width 7.5 mm
SOT163-1
74VHCT245D
74VHC245PW −40 °C to +125 °C TSSOP20 plastic thin shrink small outline package; 20 leads;body width 4.4 mm
SOT360-1
74VHCT245PW
74VHC245BQ −40 °C to +125 °C DHVQFN20 plastic dual-in-line compatible thermal enhancedvery thin quad flat package; no leads; 20 terminals;body 2.5 × 4.5 × 0.85 mm
SOT764-1
74VHCT245BQ
Nexperia 74VHC245; 74VHCT245Octal bus transceiver; 3-state
4. Functional diagram
Fig 1. Logic symbol Fig 2. IEC logic symbol
2
1DIR
18
19
B0
B1
B2
B3
B4
B5
B6
B7
3
17
4
16
5
15
6
14
7
13
8
12
9
A0
A1
A2
A3
A4
A5
A6
A7
11
OE
mna174
173
1
19
2
1
164
155
146
137
128
119
18
G3
3EN1
3EN2
2
mna175
74VHC_VHCT245_1
Product data sheet Rev. 01 — 25 August 2009 2 of 16
Nexperia 74VHC245; 74VHCT245Octal bus transceiver; 3-state
14. Legal information
14.1 Data sheet status
[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 statusinformation is available on the Internet at URL http://www.nexperia.com.
14.2 Definitions
Draft — The document is a draft version only. The content is still underinternal review and subject to formal approval, which may result inmodifications or additions. Nexperia does not give anyrepresentations or warranties as to the accuracy or completeness ofinformation included herein and shall have no liability for the consequences ofuse of such information.
Short data sheet — A short data sheet is an extract from a full data sheetwith the same product type number(s) and title. A short data sheet is intendedfor quick reference only and should not be relied upon to contain detailed andfull information. For detailed and full information see the relevant full datasheet, which is available on request via the local Nexperia salesoffice. In case of any inconsistency or conflict with the short data sheet, thefull data sheet shall prevail.
14.3 Disclaimers
General — Information in this document is believed to be accurate andreliable.However,Nexperiadoesnotgiveany representationsorwarranties, expressed or implied, as to the accuracy or completeness of suchinformation and shall have no liability for the consequences of use of suchinformation.
Right to make changes — Nexperia reserves the right tomakechanges to information published in this document, including withoutlimitation specifications and product descriptions, at any time and withoutnotice. This document supersedes and replaces all information supplied priorto the publication hereof.
Suitability for use — Nexperia products are not designed,authorized or warranted to be suitable for use in medical, military, aircraft,space or life support equipment, nor in applications where failure ormalfunction of a Nexperia product can reasonably be expectedto result in personal injury, death or severe property or environmental
damage. Nexperia accepts no liability for inclusion and/or use ofNexperia products in such equipment or applications andtherefore such inclusion and/or use is at the customer’s own risk.
Applications — Applications that are described herein for any of theseproducts are for illustrative purposes only. Nexperia makes norepresentation or warranty that such applications will be suitable for thespecified use without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined inthe Absolute Maximum Ratings System of IEC 60134) may cause permanentdamage to the device. Limiting values are stress ratings only and operation ofthe device at these or any other conditions above those given in theCharacteristics sections of this document is not implied. Exposure to limitingvalues for extended periods may affect device reliability.
Terms and conditions of sale — Nexperia products are soldsubject to the general terms and conditions of commercial sale, as publishedat http://www.nexperia.com/profile/terms, including those pertaining to warranty,intellectual property rights infringement and limitation of liability, unlessexplicitly otherwise agreed to in writing by Nexperia. In case ofany inconsistency or conflict between information in this document and suchterms and conditions, the latter will prevail.
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Export control — This document as well as the item(s) described hereinmay be subject to export control regulations. Export might require a priorauthorization from national authorities.
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15. Contact information
For more information, please visit: http://www .nexperia.com
For sales office addresses, please send an email to: [email protected]
Document status [1] [2] Product status [3] Definition
Objective [short] data sheet Development This document contains data from the objective specification for product development.
Preliminary [short] data sheet Qualification This document contains data from the preliminary specification.
Product [short] data sheet Production This document contains the product specification.
74VHC_VHCT245_1
Product data sheet Rev. 01 — 25 August 2009 15 of 16