TC74LVX244FT(EL) [TOSHIBA]
IC BUFF/DVR TRI-ST DUAL 20TSSOP;
| 型号： | TC74LVX244FT(EL) |
| 厂家： | 
TOSHIBA |
| 描述： | IC BUFF/DVR TRI-ST DUAL 20TSSOP |
| 文件： | 总9页 (文件大小：194K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TC74LVX240,244F/FT
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LVX240F,TC74LVX240FT
TC74LVX244F,TC74LVX244FT
Octal Bus Buffer
TC74LVX240 Inverted, 3-State Outputs
TC74LVX240F, TC74LVX244F
TC74LVX244 Non-Inverted, 3-State Outputs
The TC74LVX240,244F/ FT is a high-speed CMOS OCTAL
BUS BUFFER fabricated using silicon gate CMOS technology.
Designed for use in 3-V systems, it achieves high-speed operation
while maintaining the CMOS low power dissipation. This device
is suitable for low-voltage and battery operated systems.
The TC74LVX240 is an inverting 3-state buffer while the
TC74LVX244 is non-inverting. Both devices have two active-low
output enables. These devices are designed to be used in such
applications as 3-state memory address drivers.
TC74LVX240FT, TC74LVX244FT
An input protection circuit ensures that 0 to 5.5V can be
applied to the input pins without regard to the supply voltage.
This device can be used to interface 5V to 3V systems and two
supply systems such as battery back up. This circuit prevents
device destruction due to mismatched supply and input voltages.
Features
Weight
SOP20-P-300-1.27A
TSSOP20-P-0044-0.65A
•
•
•
High-speed: t = 4.7 ns (typ.) (V
= 3.3 V)
pd
CC
: 0.22 g (typ.)
: 0.08 g (typ.)
Low power dissipation: I
= 4 μA (max) (Ta = 25°C)
CC
Input voltage level: V = 0.8 V (max) (V
= 3 V)
= 3 V)
IL
CC
CC
V
IH
= 2.0 V (min) (V
•
•
•
•
Power-down protection provided on all inputs
∼
−
Balanced propagation delays: t
t
pHL
pLH
Low niose: V
= 0.8 V (max)
OLP
Pin and function compatible with 74HC240/244
1
2007-10-17
TC74LVX240,244F/FT
Pin Assignment (top view)
TC74LVX240
TC74LVX244
1G
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
11
V
1G
1
2
3
4
5
6
7
8
9
20
19
V
CC
CC
1A1
2G
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
2G
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
18 1Y1
17 2A4
16 1Y2
15 2A3
14 1Y3
13 2A2
12 1Y4
11 2A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND 10
GND 10
IEC Logic Symbol
TC74LVX240
EN
TC74LVX244
EN
(1)
1G
(1)
1G
(2)
1A1
(4)
(18)
(16)
(14)
(12)
(2)
(4)
(6)
(8)
(18)
1Y1
1Y2
1Y3
1Y4
1A1
1A2
1A3
1A4
1Y1
(16)
(14)
(12)
1A2
(6)
1Y2
1Y3
1Y4
1A3
(8)
1A4
(19)
2G
(19)
EN
EN
2G
(11)
2A1
(9)
(7)
(5)
(3)
(11)
(13)
(15)
(17)
(9)
(7)
(5)
(3)
2Y1
2Y2
2Y3
2Y4
2A1
2A2
2A3
2A4
2Y1
2Y2
2Y3
2Y4
(13)
2A2
(15)
2A3
(17)
2A4
Truth Table
Inputs
Outputs
Y
n (244)
G
A
n
Y
n(240)
L
L
L
L
H
Z
H
L
H
X
H
Z
X: Don’t care
Z: High impedance
2
2007-10-17
TC74LVX240,244F/FT
Absolute Maximum Ratings (Note)
Characteristics
Supply voltage range
Symbol
Rating
Unit
V
−0.5 to 7.0
−0.5 to 7.0
V
V
CC
DC input voltage
V
IN
DC output voltage
Input diode current
Output diode current
DC output current
V
−0.5 to V
+ 0.5
V
OUT
CC
I
−20
mA
mA
mA
mA
mW
°C
IK
I
±20
±25
OK
I
OUT
DC V /ground current
CC
I
±75
CC
Power dissipation
P
180
D
Storage temperature
T
−65 to 150
stg
Note: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even
destruction.
Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the
significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even
if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum
ratings and the operating ranges.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test
report and estimated failure rate, etc).
Operating Ranges (Note)
Characteristics
Supply voltage
Symbol
Rating
Unit
V
2.0 to 3.6
0 to 5.5
V
V
CC
Input voltage
V
IN
Output voltage
V
OUT
0 to V
V
CC
Operating temperature
Input rise and fall time
T
−40 to 85
°C
ns/V
opr
dt/dv
0 to 100
Note: The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
3
2007-10-17
TC74LVX240,244F/FT
Electrical Characteristics
DC Characteristics
Ta = −40 to
Ta = 25°C
Sym-
bol
85°C
Characteristics
Test Condition
Unit
V
(V)
Min
1.5
2.0
2.4
⎯
Typ.
⎯
⎯
⎯
⎯
⎯
⎯
2.0
3.0
⎯
0
Max
⎯
Min
1.5
2.0
2.4
⎯
Max
CC
2.0
⎯
⎯
H-level
V
⎯
3.0
3.6
2.0
3.0
3.6
2.0
3.0
3.0
2.0
3.0
3.0
⎯
IH
⎯
⎯
Input voltage
V
0.5
0.8
0.8
⎯
0.5
0.8
0.8
⎯
L-level
H-level
L-level
V
⎯
⎯
⎯
IL
⎯
⎯
I
I
I
I
I
I
= −50 μA
= −50 μA
= −4 mA
= 50 μA
= 50 μA
= 4 mA
1.9
2.9
2.58
⎯
1.9
2.9
2.48
⎯
OH
OH
OH
OL
OL
OL
V
= V
IL
IN
or V
IH
IH
V
⎯
⎯
OH
⎯
⎯
Output voltage
V
0.1
0.1
0.36
0.1
0.1
0.44
V
IN
or V
= V
IL
V
⎯
0
⎯
OL
⎯
⎯
⎯
3-State output
V
V
V
V
= V or V
IH IL
IN
I
3.6
⎯
⎯
±0.25
⎯
±2.5
μA
OZ
Off-state current
Input leakage current
= V or GND
OUT
CC
I
= 5.5 V or GND
3.6
3.6
⎯
⎯
⎯
⎯
±0.1
⎯
⎯
±1.0
μA
μA
IN
IN
IN
Quiescent supply current
I
= V
or GND
CC
4.0
40.0
CC
4
2007-10-17
TC74LVX240,244F/FT
AC Characteristics (input: t = t = 3 ns)
r
f
Ta = −40 to
Ta = 25°C
85°C
Characteristics
Symbol Test Condition
Unit
ns
V
(V)
C
(pF)
Min
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
Typ.
5.7
8.2
4.3
6.8
6.1
8.6
4.7
7.2
7.1
9.6
5.5
8.0
11.6
9.7
⎯
Max
10.1
13.6
6.2
Min
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
⎯
Max
CC
L
15
12.5
16.0
7.5
t
t
t
t
2.7
pLH
pHL
pLH
pHL
Propagation delay time
(TC74LVX240)
50
15
50
15
50
15
50
15
50
15
50
50
50
50
50
⎯
⎯
3.3 ± 0.3
2.7
9.7
11.0
13.5
17.0
8.5
11.4
14.9
7.1
Propagation delay time
(TC74LVX244)
ns
ns
3.3 ± 0.3
2.7
10.6
13.8
17.3
8.8
12.0
16.5
20.0
10.5
14.0
19.0
13.0
1.5
t
pZL
pZH
R
R
= 1 kΩ
= 1 kΩ
Output enable time
L
t
3.3 ± 0.3
12.3
16.0
11.4
1.5
t
2.7
pLZ
ns
ns
Output disable time
L
t
3.3 ± 0.3
2.7
pHZ
t
t
osLH
Output to output skew
(Note 1)
3.3 ± 0.3
⎯
1.5
⎯
1.5
osHL
Input capacitance
Output capacitance
C
IN
(Note 2)
4
10
⎯
10
pF
pF
C
OUT
⎯
6
⎯
⎯
⎯
17
Power dissipation capacitance
(Note 3)
TC74LVX240
TC74LVX244
⎯
⎯
⎯
C
PD
pF
19
⎯
⎯
⎯
Note 1: Parameter guaranteed by design.
(t = |t − t |, t = |t
− t |)
pHLn
osLH
pLHm
pLHn osHL
pHLm
Note 2: Parameter guaranteed by design.
Note 3: is defined as the value of the internal equivalent capacitance which is calculated from the operating
C
PD
current consumption.
Average operating current can be obtained by the equation:
I
= C ･V ･f + I /8 (per bit)
PD CC IN CC
CC (opr)
5
2007-10-17
TC74LVX240,244F/FT
Noise Characteristics (Ta = 25°C, input: t = t = 3 ns, C = 50 pF)
r
f
L
Limit
Characteristics
Symbol
Test Condition
Typ.
Unit
V
(V)
CC
Quiet output maximum dynamic V
V
V
⎯
⎯
⎯
⎯
3.3
0.5
−0.5
⎯
0.8
−0.8
2.0
V
V
V
V
OL
OLP
OLV
Quiet output minimum dynamic V
3.3
3.3
3.3
OL
Minimum high level dynamic input voltage V
V
IHD
IH
Maximum low level dynamic input voltage V
V
⎯
0.8
IL
ILD
Input Equivalent Circuit
INPUT
6
2007-10-17
TC74LVX240,244F/FT
Package Dimensions
Weight: 0.22 g (typ.)
7
2007-10-17
TC74LVX240,244F/FT
Package Dimensions
Weight: 0.08 g (typ.)
8
2007-10-17
TC74LVX240,244F/FT
RESTRICTIONS ON PRODUCT USE
•
•
•
Toshiba Corporation, and its subsidiaries and affiliates (collectively “TOSHIBA”), reserve the right to make changes to the information
in this document, and related hardware, software and systems (collectively “Product”) without notice.
This document and any information herein may not be reproduced without prior written permission from TOSHIBA. Even with
TOSHIBA’s written permission, reproduction is permissible only if reproduction is without alteration/omission.
Though TOSHIBA works continually to improve Product’s quality and reliability, Product can malfunction or fail. Customers are
responsible for complying with safety standards and for providing adequate designs and safeguards for their hardware, software and
systems which minimize risk and avoid situations in which a malfunction or failure of Product could cause loss of human life, bodily
injury or damage to property, including data loss or corruption. Before creating and producing designs and using, customers must
also refer to and comply with (a) the latest versions of all relevant TOSHIBA information, including without limitation, this document,
the specifications, the data sheets and application notes for Product and the precautions and conditions set forth in the “TOSHIBA
Semiconductor Reliability Handbook” and (b) the instructions for the application that Product will be used with or for. Customers are
solely responsible for all aspects of their own product design or applications, including but not limited to (a) determining the
appropriateness of the use of this Product in such design or applications; (b) evaluating and determining the applicability of any
information contained in this document, or in charts, diagrams, programs, algorithms, sample application circuits, or any other
referenced documents; and (c) validating all operating parameters for such designs and applications. TOSHIBA ASSUMES NO
LIABILITY FOR CUSTOMERS’ PRODUCT DESIGN OR APPLICATIONS.
•
Product is intended for use in general electronics applications (e.g., computers, personal equipment, office equipment, measuring
equipment, industrial robots and home electronics appliances) or for specific applications as expressly stated in this document.
Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or
reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious
public impact (“Unintended Use”). Unintended Use includes, without limitation, equipment used in nuclear facilities, equipment used
in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling
equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric
power, and equipment used in finance-related fields. Do not use Product for Unintended Use unless specifically permitted in this
document.
•
•
Do not disassemble, analyze, reverse-engineer, alter, modify, translate or copy Product, whether in whole or in part.
Product shall not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any
applicable laws or regulations.
•
•
The information contained herein is presented only as guidance for Product use. No responsibility is assumed by TOSHIBA for any
infringement of patents or any other intellectual property rights of third parties that may result from the use of Product. No license to
any intellectual property right is granted by this document, whether express or implied, by estoppel or otherwise.
ABSENT A WRITTEN SIGNED AGREEMENT, EXCEPT AS PROVIDED IN THE RELEVANT TERMS AND CONDITIONS OF SALE
FOR PRODUCT, AND TO THE MAXIMUM EXTENT ALLOWABLE BY LAW, TOSHIBA (1) ASSUMES NO LIABILITY
WHATSOEVER, INCLUDING WITHOUT LIMITATION, INDIRECT, CONSEQUENTIAL, SPECIAL, OR INCIDENTAL DAMAGES OR
LOSS, INCLUDING WITHOUT LIMITATION, LOSS OF PROFITS, LOSS OF OPPORTUNITIES, BUSINESS INTERRUPTION AND
LOSS OF DATA, AND (2) DISCLAIMS ANY AND ALL EXPRESS OR IMPLIED WARRANTIES AND CONDITIONS RELATED TO
SALE, USE OF PRODUCT, OR INFORMATION, INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE, ACCURACY OF INFORMATION, OR NONINFRINGEMENT.
•
•
Do not use or otherwise make available Product or related software or technology for any military purposes, including without
limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile
technology products (mass destruction weapons). Product and related software and technology may be controlled under the
Japanese Foreign Exchange and Foreign Trade Law and the U.S. Export Administration Regulations. Export and re-export of Product
or related software or technology are strictly prohibited except in compliance with all applicable export laws and regulations.
Please contact your TOSHIBA sales representative for details as to environmental matters such as the RoHS compatibility of Product.
Please use Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances,
including without limitation, the EU RoHS Directive. TOSHIBA assumes no liability for damages or losses occurring as a result of
noncompliance with applicable laws and regulations.
9
2007-10-17
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