74LV244ATPW [NEXPERIA]
Octal buffer/line driver; 3-stateProduction;型号: | 74LV244ATPW |
厂家: | Nexperia |
描述: | Octal buffer/line driver; 3-stateProduction 驱动 光电二极管 逻辑集成电路 |
文件: | 总13页 (文件大小:729K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
74LV244AT
Octal buffer/line driver; 3-state
Rev. 1 — 23 November 2016
Product data sheet
1. General description
The 74LV244AT is an 8-bit buffer/line driver with 3-state outputs and TTL inputs. The
device features two output enables (1OE and 2OE). A HIGH on nOE causes the
associated outputs to assume a high-impedance OFF-state.
Designed to operate over a VCC range from 4.5 V to 5.5 V, the inputs are TTL compatible,
which allows the device to be used to translate from 3.3 V to 5 V.
Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall
times.
This device is fully specified for partial Power-down applications using IOFF
.
The IOFF circuitry disables the output, preventing the damaging backflow current through
the device when it is powered down.
2. Features and benefits
Direct interface with TTL levels
Supply voltage range from 4.5 V to 5.5 V
Typical tpd of 2.8 ns at 5 V
Typical VOL(p) < 0.8 V at VCC = 5 V, Tamb = 25 C
Typical VOH(v) > 2.3 V at VCC = 5 V, Tamb = 25 C
Supports mixed-mode voltage operation on all ports
IOFF circuitry provides partial Power-down mode operation
Latch-up performance exceeds 250 mA per JESD 78 Class II
ESD protection:
HBM ANSI/ESDA/JEDEC JS-001 Class 2 exceeds 3 kV
MM JESD22-A115-A exceeds 150 V
CDM JESD22-C101E exceeds 2 kV
Specified from 40 C to +85 C and from 40 C to +125 C
74LV244AT
Nexperia
Octal buffer/line driver; 3-state
3. Ordering information
Table 1.
Ordering information
Type number
Package
Temperature range Name
Description
Version
74LV244ATPW 40 C to +125 C
TSSOP20
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
SOT360-1
4. Functional diagram
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Fig 1. Logic symbol
Fig 2. IEC logic symbol
74LV244AT
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 23 November 2016
2 of 13
74LV244AT
Nexperia
Octal buffer/line driver; 3-state
5. Pinning information
5.1 Pinning
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Fig 3. Pin configuration TSSOP20
5.2 Pin description
Table 2.
Pin description
Symbol
Pin
Description
1OE, 2OE
1, 19
output enable input (active LOW)
data input
1A0, 1A1, 1A2, 1A3
2Y0, 2Y1, 2Y2, 2Y3
GND
2, 4, 6, 8
3, 5, 7, 9
10
data output
ground (0 V)
2A0, 2A1, 2A2, 2A3
1Y0, 1Y1, 1Y2, 1Y3,
17, 15, 13, 11
18, 16, 14, 12
data input
data output
74LV244AT
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©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 23 November 2016
3 of 13
74LV244AT
Nexperia
Octal buffer/line driver; 3-state
6. Functional description
Table 3.
Function table [1]
Control
Input
nAn
L
Output
nOE
L
nYn
L
L
H
H
H
X
Z
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
VCC
VI
Parameter
Conditions
Min
0.5
0.5
0.5
0.5
20
50
-
Max
+7.0
+7.0
VCC + 0.5
+7.0
-
Unit
V
supply voltage
input voltage
output voltage
[1]
[2][3]
[2]
V
VO
active mode
V
power-down or 3-state mode
VI < 0 V
V
IIK
input clamping current
output clamping current
output current
mA
mA
mA
mA
mA
C
IOK
IO
VO < 0 V
-
VO = 0 V to VCC
35
70
ICC
IGND
Tstg
Ptot
supply current
-
ground current
70
65
-
-
storage temperature
total power dissipation
+150
500
[4]
Tamb = 40 C to +125 C
mW
[1] The minimum input voltage ratings may be exceeded if the input current ratings are observed.
[2] The output voltage ratings may be exceeded if the output current ratings are observed.
[3] This value is limited to 7.0 V maximum.
[4] For TSSOP20 package: above 100 C the value of Ptot derates linearly with 10 mW/K.
74LV244AT
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 23 November 2016
4 of 13
74LV244AT
Nexperia
Octal buffer/line driver; 3-state
8. Recommended operating conditions
Table 5.
Recommended operating conditions
Voltages are referenced to GND (ground = 0 V).
Symbol
VCC
VI
Parameter
Conditions
Min
4.5
0
Max
5.5
Unit
V
supply voltage
input voltage
output voltage
5.5
V
VO
active mode
0
VCC
5.5
V
power-down or 3-state mode
0
V
Tamb
ambient temperature
40
-
+125 C
20 ns/V
t/V
input transition rise and fall rate
VCC = 5.0 V 0.5 V
9. Static characteristics
Table 6.
Static characteristics
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
25 C
40 C to +85 C 40 C to +125 C Unit
Min Typ Max
Min
Max
Min
Max
VIH
VIL
HIGH-level
input voltage
VCC = 4.5 V to 5.5 V
VCC = 4.5 V to 5.5 V
2
-
-
2
-
2
-
V
V
LOW-level
-
-
0.8
-
0.8
-
0.8
input voltage
VOH
HIGH-level
output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = 50 A
4.4
4.5
-
-
-
4.4
3.8
-
-
4.4
3.8
-
-
V
V
IO = 16 mA
3.94
VOL
LOW-level
output voltage
VI = VIH or VIL; VCC = 4.5 V
IO = 50 A
-
-
-
0
-
0.1
0.44
0.25
-
-
-
0.1
-
-
-
0.1
V
IO = 16mA
0.55
2.5
0.55
2.5
V
IOZ
OFF-state
VCC = 5.5 V; VI = VIH or VIL;
-
A
output current VO = GND to 5.5 V
IOFF
power-off
leakage
current
VI or VO = GND to 5.5 V;
CC = 0 V
-
-
0.5
-
5
-
5
A
V
II
input leakage VI = VCC or GND;
current VCC = 0 V to 5.5 V
-
-
-
-
-
-
0.1
2
-
-
-
1
20
-
-
-
1
20
A
A
mA
ICC
ICC
supply current VI = VCC or GND; IO = 0 A;
CC = 5.5 V
V
additional
per input pin; VI = 3.4 V;
1.35
1.5
1.5
supply current IO = 0 A; other pins at VCC or
GND; VCC = 5.5 V
74LV244AT
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 23 November 2016
5 of 13
74LV244AT
Nexperia
Octal buffer/line driver; 3-state
10. Dynamic characteristics
Table 7.
Dynamic characteristics
GND = 0 V. For test circuit see Figure 6.
Symbol Parameter Conditions
25 C
40 C to +85 C 40 C to +125 C Unit
Min Typ[1] Max Min
Max
Min
Max
[2]
tpd
ten
tdis
propagation nAn to nYn; see Figure 4
delay
VCC = 4.5 V to 5.5 V
CL = 15 pF
CL = 50 pF
-
-
2.8
4
7.4
8.9
1
1
8.5
9.5
1
1
8.5
9.5
ns
ns
enable time nOE to nYn; see Figure 5
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
-
3.7 10.4
1
1
12
13
1
1
12
13
ns
ns
CL = 50 pF
4.9
11.4
[2]
disable time nOE to nYn; see Figure 5
VCC = 4.5 V to 5.5 V
CL = 15 pF
-
-
-
3.5
5.8
-
7.7
11.4
1
1
1
-
8
13
1
1
1
-
8
13
1
ns
ns
ns
CL = 50 pF
tsk(o)
CI
skew
input
VCC = 4.5 V to 5.5 V;
CL = 50 pF
VI = VCC or GND;
capacitance VCC = 5 V
-
-
-
2
5
6
-
-
-
-
6
-
-
-
-
6
-
pF
pF
pF
CO
output
VO = VCC or GND;
capacitance VCC = 5 V
[3]
CPD
power
per buffer;
11
-
-
-
dissipation
CL = 50 pF; f = 10 MHz;
capacitance VI = GND to VCC
[1] Typical values are measured at Tamb = 25 C and VCC = 5 V.
[2]
t
pd is the same as tPLH and tPHL
.
ten is the same as tPZL and tPZH
.
tdis is the same as tPLZ and tPHZ
.
[3] CPD is used to determine the dynamic power dissipation PD (W).
PD = CPD VCC2 fi + (CL VCC2 fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in Volts.
74LV244AT
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 23 November 2016
6 of 13
74LV244AT
Nexperia
Octal buffer/line driver; 3-state
Table 8.
Noise characteristics
GND = 0 V. For test circuit see Figure 6.
Symbol Parameter
Conditions
Tamb = 25 C
Unit
Min
Typ
Max
VCC = 5 V; CL = 50 pF
VOL(p)
VOL(v)
VOH(v)
VIH(AC)
VIL(AC)
LOW-level output voltage (peak)
LOW-level output voltage (valley)
HIGH-level output voltage (valley)
AC HIGH-level input voltage (dynamic)
AC LOW-level input voltage (dynamic)
-
0.6
0.6
4.0
-
1.5
V
V
V
V
V
1.5
-
-
-
2
-
-
-
0.8
11. Waveforms
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OL and VOH are typical voltage output levels that occur with the output load.
V
Fig 4. Propagation delay input (An) to output (Yn)
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V
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Fig 5. enable and disable times
74LV244AT
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 23 November 2016
7 of 13
74LV244AT
Nexperia
Octal buffer/line driver; 3-state
Table 9.
Input
VM
Measurement points
Output
VM
VX
VY
1.5 V
0.5VCC
VOL + 0.3 V
VOH 0.3 V
W
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Test data is given in Table 10.
Definitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator
CL = Load capacitance including jig and probe capacitance
RL = Load resistor
S1 = Test selection switch
Fig 6. Test circuit for measuring switching times
Table 10. Test data
Input
VI
Load
S1 position
tPHL, tPLH
open
tr, tf
CL
RL
tPZH, tPHZ
tPZL, tPLZ
GND to 3.0 V 3.0 ns
15 pF, 50 pF
1 k
GND
VCC
74LV244AT
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 23 November 2016
8 of 13
74LV244AT
Nexperia
Octal buffer/line driver; 3-state
12. Package outline
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Fig 7. Package outline SOT360-1 (TSSOP20)
74LV244AT
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 23 November 2016
9 of 13
74LV244AT
Nexperia
Octal buffer/line driver; 3-state
13. Abbreviations
Table 11. Abbreviations
Acronym
CDM
DUT
Description
Charge Device Model
Device Under Test
ESD
ElectroStatic Discharge
Human Body Model
Machine Model
HBM
MM
TTL
Transistor-Transistor Logic
14. Revision history
Table 12. Revision history
Document ID
Release date
20161123
Data sheet status
Change notice
Supersedes
74LV244AT v.1
Product data sheet
-
-
74LV244AT
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 23 November 2016
10 of 13
74LV244AT
Nexperia
Octal buffer/line driver; 3-state
15. Legal information
15.1 Data sheet status
Document status[1][2]
Product status[3]
Development
Definition
Objective [short] data sheet
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.
Preliminary [short] data sheet Qualification
Product [short] data sheet Production
[1]
[2]
[3]
Please consult the most recently issued document before initiating or completing a design.
The term ‘short data sheet’ is explained in section “Definitions”.
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.nexperia.com.
Suitability for use — Nexperia products are not designed,
15.2 Definitions
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 a Nexperia product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. Nexperia and its suppliers accept no liability for
inclusion and/or use of Nexperia products in such equipment or
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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. Nexperia 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 Nexperia sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia makes no
representation or warranty that such applications will be suitable for the
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Customers are responsible for the design and operation of their applications
and products using Nexperia products, and Nexperia
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design. It is customer’s sole responsibility to determine whether the Nexperia
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.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
Nexperia and its customer, unless Nexperia and
customer have explicitly agreed otherwise in writing. In no event however,
shall an agreement be valid in which the Nexperia product is
deemed to offer functions and qualities beyond those described in the
Product data sheet.
Nexperia 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 Nexperia
products in order to avoid a default of the applications and
15.3 Disclaimers
Limited warranty and liability — Information in this document is believed to
be accurate and reliable. However, Nexperia 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. Nexperia takes no
responsibility for the content in this document if provided by an information
source outside of Nexperia.
the products or of the application or use by customer’s third party
customer(s). Nexperia 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.
In no event shall Nexperia 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.
Terms and conditions of commercial sale — Nexperia
products are sold subject to the general terms and conditions of commercial
sale, as published at http://www.nexperia.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. Nexperia hereby expressly objects to
applying the customer’s general terms and conditions with regard to the
purchase of Nexperia products by customer.
Notwithstanding any damages that customer might incur for any reason
whatsoever, Nexperia’s 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 Nexperia.
Right to make changes — Nexperia 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.
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.
74LV244AT
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 23 November 2016
11 of 13
74LV244AT
Nexperia
Octal buffer/line driver; 3-state
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.
Nexperia’s specifications such use shall be solely at customer’s
own risk, and (c) customer fully indemnifies Nexperia for any
liability, damages or failed product claims resulting from customer design and
use of the product for automotive applications beyond Nexperia’s
standard warranty and Nexperia’s product specifications.
Non-automotive qualified products — Unless this data sheet expressly
states that this specific Nexperia product is automotive qualified,
the product is not suitable for automotive use. It is neither qualified nor tested
in accordance with automotive testing or application requirements. Nexperia
accepts no liability for inclusion and/or use of
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
non-automotive qualified products in automotive equipment or applications.
In the event that customer uses the product for design-in and use in
automotive applications to automotive specifications and standards, customer
(a) shall use the product without Nexperia’s warranty of the
product for such automotive applications, use and specifications, and (b)
whenever customer uses the product for automotive applications beyond
15.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
16. Contact information
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
74LV244AT
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 23 November 2016
12 of 13
74LV244AT
Nexperia
Octal buffer/line driver; 3-state
17. Contents
1
2
3
4
General description. . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
Ordering information. . . . . . . . . . . . . . . . . . . . . 2
Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
5
5.1
5.2
Pinning information. . . . . . . . . . . . . . . . . . . . . . 3
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3
6
Functional description . . . . . . . . . . . . . . . . . . . 4
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 4
Recommended operating conditions. . . . . . . . 5
Static characteristics. . . . . . . . . . . . . . . . . . . . . 5
Dynamic characteristics . . . . . . . . . . . . . . . . . . 6
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Package outline . . . . . . . . . . . . . . . . . . . . . . . . . 9
Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . . 10
Revision history. . . . . . . . . . . . . . . . . . . . . . . . 10
7
8
9
10
11
12
13
14
15
Legal information. . . . . . . . . . . . . . . . . . . . . . . 11
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 11
Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 12
15.1
15.2
15.3
15.4
16
17
Contact information. . . . . . . . . . . . . . . . . . . . . 12
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
© Nexperia B.V. 2017. All rights reserved
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Date of release: 23 November 2016
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