TC74AC240FW-ELP [TOSHIBA]
IC AC SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, PDSO20, 0.300 INCH, PLASTIC, SOIC-20, Bus Driver/Transceiver;
| 型号： | TC74AC240FW-ELP |
| 厂家： | 
TOSHIBA |
| 描述： | IC AC SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, PDSO20, 0.300 INCH, PLASTIC, SOIC-20, Bus Driver/Transceiver 总线驱动器 总线收发器 逻辑集成电路 光电二极管 |
| 文件： | 总9页 (文件大小：237K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TC74AC240,244P/F/ FT
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74AC240P,TC74AC240F,TC74AC240FT
TC74AC244P,TC74AC244F,TC74AC244FT
Octal Bus Buffer
TC74AC240P/F/FT
Inverted, 3-State
Outputs
TC74AC240P, TC74AC244P
TC74AC240F, TC74AC244F
TC74AC240FT, TC74AC244FT
TC74AC244P/F/FT
Non-Inverted, 3-State
Outputs
The TC74AC240 and 244 are advanced high speed CMOS
OCTAL BUS BUFFERs fabricated with silicon gate and
double-layer metal wiring C2MOS technology.
They achieve the high speed operation similar to equivalent
Bipolar Schottky TTL while maintaining the CMOS low power
dissipation.
The 74AC240 is an inverting 3-state buffer while the 74AC244
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.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
Features
•
•
•
•
High speed: t = 4.0 ns (typ.) at V
= 5 V
pd
CC
Low power dissipation: I
= 8 μA (max) at Ta = 25°C
CC
High noise immunity: V
= V
= 28% V
(min)
NIH
NIL
CC
Symmetrical output impedance: |I | = I
= 24 mA (min)
OH
OL
Capability of driving 50 Ω
transmission lines.
∼
t
−
pHL
•
•
•
Balanced propagation delays: t
Weight
pLH
DIP20-P-300-2.54A
SOP20-P-300-1.27A
TSSOP20-P-0044-0.65A
: 1.30 g (typ.)
: 0.22 g (typ.)
: 0.08 g (typ.)
Wide operating voltage range: V
= 2 to 5.5 V
CC (opr)
Pin and function compatible with 74F240/244
1
2007-10-01
TC74AC240,244P/F/ FT
Pin Assignment
TC74AC240
TC74AC244
1G
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
1
2
3
4
5
6
7
8
9
20
19
18
V
1G
1
2
3
4
5
6
7
8
9
20
19
V
CC
2G
1Y1
CC
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
2G
18 1Y1
17 2A4
16 1Y2
15 2A3
14 1Y3
13 2A2
12 1Y4
11 2A1
17 2A4
16 1Y2
15 2A3
14
1Y3
13 2A2
12 1Y4
11 2A1
GND 10
GND 10
(top view)
(top view)
IEC Logic Symbol
TC74AC240
EN
TC74AC244
(1)
(1)
1G
1G
EN
(2)
(4)
(6)
(8)
(18)
(2)
(4)
(6)
(8)
(18)
1A1
1A2
1A3
1A4
1A1
1A2
1A3
1A4
1Y1
1Y2
1Y3
1Y4
1Y1
1Y2
1Y3
1Y4
(16)
(14)
(12)
(16)
(14)
(12)
(19)
(19)
2G
EN
2G
EN
(11)
(13)
(15)
(17)
(9)
(7)
(5)
(3)
(11)
(13)
(15)
(17)
(9)
(7)
(5)
(3)
2A1
2A2
2A3
2A4
2A1
2A2
2A3
2A4
2Y1
2Y2
2Y3
2Y4
2Y1
2Y2
2Y3
2Y4
Truth Table
Inputs
Outputs
Y (244)
G
L
An
L
Y
(240)
n
n
L
H
Z
H
L
H
X
L
Z
H
X: Don’t care
Z: High impedance
2
2007-10-01
TC74AC240,244P/F/ FT
Absolute Maximum Ratings (Note 1)
Characteristics
Supply voltage range
Symbol
Rating
Unit
V
−0.5 to 7.0
V
CC
DC input voltage
V
−0.5 to V
+ 0.5
V
IN
CC
CC
DC output voltage
Input diode current
Output diode current
DC output current
V
−0.5 to V
+ 0.5
V
OUT
I
±20
mA
mA
mA
mA
IK
I
±50
±50
OK
I
OUT
DC V /ground current
CC
I
±200
CC
Power dissipation
P
500 (DIP) (Note 2)/180 (SOP/TSSOP)
mW
°C
D
Storage temperature
T
stg
−65 to 150
Note 1: 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).
Note 2: 500 mW in the range of Ta = −40 to 65°C. From Ta = 65 to 85°C a derating factor of −10 mW/°C should be
applied up to 300 mW.
Operating Ranges (Note)
Characteristics
Supply voltage
Symbol
Rating
Unit
V
2.0 to 5.5
V
V
CC
Input voltage
V
0 to V
0 to V
IN
CC
CC
Output voltage
V
V
OUT
Operating temperature
T
−40 to 85
0 to 100 (V = 3.3 ± 0.3 V)
°C
opr
CC
0 to 20 (V
Input rise and fall time
dt/dV
ns/V
= 5 ± 0.5 V)
CC
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
2007-10-01
TC74AC240,244P/F/ FT
Electrical Characteristics
DC Characteristics
Ta =
−40 to 85°C
Ta = 25°C
Characteristics
Symbol
Test Condition
Unit
V
V
(V)
CC
Min
Typ.
Max
Min
Max
2.0
1.50
2.10
3.85
―
―
―
―
―
1.50
2.10
3.85
―
―
―
High-level input
voltage
V
―
3.0
5.5
2.0
3.0
5.5
2.0
3.0
4.5
3.0
4.5
IH
―
―
―
―
0.50
0.90
1.65
―
0.50
0.90
1.65
―
Low-level input
voltage
V
―
―
―
―
V
V
IL
―
―
―
1.9
2.9
4.4
2.58
3.94
―
2.0
3.0
4.5
―
1.9
2.9
4.4
2.48
3.80
3.85
―
I
= −50 μA
―
―
OH
V
IN
IH
IL
―
―
High-level output
voltage
V
= V or
V
OH
I
I
I
= −4 mA
―
―
OH
OH
OH
= −24 mA
―
―
―
= −75 mA (Note) 5.5
―
―
―
2.0
―
0.0
0.0
0.0
―
0.1
0.1
0.1
0.36
0.36
―
0.1
0.1
0.1
0.44
0.44
1.65
I
= 50 μA
3.0
4.5
―
―
OL
V
IN
IH
IL
―
―
Low-level output
voltage
V
= V or
V
V
OL
I
I
I
= 12 mA
= 24 mA
= 75 mA
3.0
―
―
OL
OL
OL
4.5
―
―
―
(Note) 5.5
―
―
―
V
V
= V or V
IH
IN
IL
3-state output
off-state current
I
5.5
―
―
±0.5
―
±5.0
μA
OZ
= V
or GND
CC
OUT
Input leakage
current
I
V
V
= V
or GND
5.5
5.5
―
―
―
―
±0.1
8.0
―
―
±1.0
80.0
μA
μA
IN
IN
IN
CC
CC
Quiescent supply
current
I
= V
or GND
CC
Note:
This spec indicates the capability of driving 50 Ω transmission lines.
One output should be tested at a time for a 10 ms maximum duration.
4
2007-10-01
TC74AC240,244P/F/ FT
AC Characteristics (C = 50 pF, R = 500 Ω, input: t = t = 3 ns)
L
L
r
f
Ta =
−40 to 85°C
Ta = 25°C
Characteristics
Symbol
Test Condition
Unit
V
(V)
Min
―
―
―
―
―
―
―
―
―
―
Typ.
6.3
4.8
7.0
5.2
8.4
5.9
6.4
5.5
5
Max
10.5
7.0
Min
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
―
Max
12.0
8.0
CC
t
t
t
t
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
pLH
pHL
pLH
pHL
Propagation delay
―
―
―
―
ns
ns
ns
ns
time
(Note 2)
11.4
7.5
13.0
8.5
Propagation delay
time
(Note 3)
t
14.0
8.7
16.0
10.0
12.0
9.0
pZL
Output enable time
t
pZH
t
10.5
7.9
pLZ
Output disable time
t
pHZ
Input capacitance
Output capacitance
C
―
―
10
10
pF
pF
IN
C
OUT
10
―
―
―
Power dissipation
capacitance
C
PD
(Note 1)
―
30
―
―
―
pF
Note 1:
C
PD
is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load.
Average operating current can be obtained by the equation:
I
= C ·V ·f + I /8 (per bit)
PD CC IN CC
CC (opr)
Note 2: For TC74AC240 only
Note 3: For TC74AC244 only
5
2007-10-01
TC74AC240,244P/F/ FT
Package Dimensions
Weight: 1.30 g (typ.)
6
2007-10-01
TC74AC240,244P/F/ FT
Package Dimensions
Weight: 0.22 g (typ.)
7
2007-10-01
TC74AC240,244P/F/ FT
Package Dimensions
Weight: 0.08 g (typ.)
8
2007-10-01
TC74AC240,244P/F/ FT
RESTRICTIONS ON PRODUCT USE
20070701-EN GENERAL
• The information contained herein is subject to change without notice.
• TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc.
• The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his
document shall be made at the customer’s own risk.
• The products described in this document shall not be used or embedded to any downstream products of which
manufacture, use and/or sale are prohibited under any applicable laws and regulations.
• The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which
may result from its use. No license is granted by implication or otherwise under any patents or other rights of
TOSHIBA or the third parties.
• Please contact your sales representative for product-by-product details in this document regarding RoHS
compatibility. Please use these products in this document in compliance with all applicable laws and regulations
that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses
occurring as a result of noncompliance with applicable laws and regulations.
9
2007-10-01
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