TC74LCX540F [TOSHIBA]
Low-Voltage Octal Bus Buffer (inverted) with 5-V Tolerant Inputs and Outputs; 低电压八路总线缓冲器（反相）与5V容限输入和输出
| 型号： | TC74LCX540F |
| 厂家： | 
TOSHIBA |
| 描述： | Low-Voltage Octal Bus Buffer (inverted) with 5-V Tolerant Inputs and Outputs |
| 文件： | 总10页 (文件大小：246K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TC74LCX540F/FT/FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LCX540F,TC74LCX540FT,TC74LCX540FK
Low-Voltage Octal Bus Buffer (inverted) with 5-V Tolerant Inputs and Outputs
The TC74LCX540 is a high-performance CMOS octal bus
buffer. Designed for use in 3.3-V systems, it achieves high-speed
TC74LCX540F
operation while maintaining the CMOS low power dissipation.
The device is designed for low-voltage (3.3 V) V
applications,
CC
but it could be used to interface to 5 V supply environment for
both inputs and outputs.
The TC74LCX540 is an inverting 3-state buffer having two
active-low output enables. When either OE1 or OE2 are high,
the terminal outputs are in the high-impedance state. This device
is designed to be used with 3-state memory address drivers, etc.
All inputs are equipped with protection circuits against static
discharge.
TC74LCX540FT
Features
•
•
•
•
•
•
•
Low-voltage operation: V
= 2.0 to 3.6 V
CC
High-speed operation: t = 6.5 ns (max) (V
= 3.0 to 3.6 V)
pd
CC
Output current: |I |/I
= 24 mA (min) (V
= 3.0 V)
OH OL
CC
Latch-up performance: −500 mA
Available in JEITA SOP, TSSOP and VSSOP (US)
Power-down protection provided on all inputs and outputs
Pin and function compatible with the 74 series
(74AC/VHC/HC/F/ALS/LS etc.) 540 type
TC74LCX540FK
Weight:
SOP20-P-300-1.27A
: 0.22 g (typ.)
TSSOP20-P-0044-0.65A : 0.08 g (typ.)
VSSOP20-P-0030-0.50 : 0.03 g (typ.)
1
2007-10-19
TC74LCX540F/FT/FK
Pin Assignment (top view)
IEC Logic Symbol
(1)
&
OE1
A1
A2
A3
A4
A5
A6
A7
A8
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
11
V
OE1
OE2
CC
EN
(19)
OE2
Y1
Y2
Y3
Y4
Y5
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(18)
(17)
(16)
(15)
(14)
(13)
(12)
(11)
A1
A2
A3
A4
A5
A6
A7
A8
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y6
Y7
Y8
GND 10
Truth Table
Inputs
Outputs
OE1
H
OE2
X
An
X
Z
Z
L
X
H
X
L
L
H
L
L
L
H
X: Don’t care
Z: High impedance
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2007-10-19
TC74LCX540F/FT/FK
Absolute Maximum Ratings (Note 1)
Characteristics
Power supply voltage
Symbol
Rating
Unit
V
−0.5 to 7.0
V
V
CC
DC input voltage
V
−0.5 to 7.0
IN
−0.5 to 7.0 (Note 2)
DC output voltage
V
V
−0.5 to V
+ 0.5
OUT
CC
(Note 3)
Input diode current
Output diode current
DC output current
Power dissipation
I
−50
mA
mA
mA
mW
mA
°C
IK
I
±50
±50
(Note 4)
OK
I
OUT
P
180
D
DC V /ground current
CC
I
/I
±100
CC GND
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: Output in OFF state
Note 3: High or low state. I
absolute maximum rating must be observed.
OUT
Note 4:
V
OUT
< GND, V
> VCC
OUT
Operating Ranges (Note 1)
Characteristics
Symbol
Rating
Unit
2.0 to 3.6
Power supply voltage
Input voltage
V
V
V
V
CC
1.5 to 3.6 (Note 2)
0 to 5.5
V
IN
0 to 5.5 (Note 3)
Output voltage
V
OUT
0 to V
CC
(Note 4)
(Note 5)
(Note 6)
±24
±12
Output current
I
/I
mA
OH OL
Operating temperature
Input rise and fall time
T
−40 to 85
°C
opr
dt/dv
0 to 10 (Note 7)
ns/V
Note 1: The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
Note 2: Data retention only
Note 3: Output in OFF state
Note 4: High or low state
Note 5:
Note 6:
Note 7:
V
V
V
= 3.0 to 3.6 V
= 2.7 to 3.0 V
CC
CC
= 0.8 to 2.0 V, V
= 3.0 V
IN
CC
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2007-10-19
TC74LCX540F/FT/FK
Electrical Characteristics
DC Characteristics (Ta = −40 to 85°C)
Characteristics
Symbol
Test Condition
Min
Max
Unit
V
V
(V)
CC
H-level
V
⎯
⎯
2.7 to 3.6
2.7 to 3.6
2.0
⎯
IH
Input voltage
L-level
H-level
V
⎯
0.8
IL
V
CC
I
= −100 μA
2.7 to 3.6
⎯
OH
− 0.2
2.2
2.4
2.2
⎯
I
I
I
I
I
I
I
= −12 mA
= −18 mA
= −24 mA
= 100 μA
= 12 mA
= 16 mA
= 24 mA
2.7
3.0
⎯
⎯
OH
OH
OH
OL
OL
OL
OL
V
V
V
= V or V
IH
OH
IN
IN
IL
3.0
⎯
Output voltage
V
2.7 to 3.6
2.7
0.2
0.4
0.4
0.55
±5.0
⎯
L-level
V
= V or V
IH
OL
IL
3.0
⎯
3.0
⎯
Input leakage current
I
V
V
V
V
V
V
V
= 0 to 5.5 V
2.7 to 3.6
⎯
μA
μA
μA
IN
IN
= V or V
IH IL
IN
3-state output off-state current
Power off leakage current
Quiescent supply current
I
2.7 to 3.6
⎯
±5.0
OZ
= 0 to 5.5 V
OUT
I
/V
IN OUT
= 5.5 V
0
⎯
⎯
⎯
⎯
10.0
10.0
±10.0
500
OFF
= V
or GND
CC
2.7 to 3.6
2.7 to 3.6
2.7 to 3.6
IN
I
CC
μA
/V
= 3.6 to 5.5 V
− 0.6 V
IN OUT
= V
Increase in I
per input
ΔI
CC
CC
IH
CC
AC Characteristics (Ta = −40 to 85°C)
Characteristics
Propagation delay time
Output enable time
Symbol
Test Condition
Min
Max
Unit
ns
V
(V)
CC
t
t
2.7
⎯
1.5
⎯
7.5
6.5
9.5
8.5
8.5
7.5
⎯
pLH
Figure 1, Figure 2
Figure 1, Figure 3
Figure 1, Figure 3
3.3 ± 0.3
2.7
pHL
t
t
pZL
ns
3.3 ± 0.3
2.7
1.5
⎯
pZH
t
pLZ
Output disable time
ns
t
3.3 ± 0.3
2.7
1.5
⎯
pHZ
t
t
osLH
Output to output skew
(Note)
ns
3.3 ± 0.3
⎯
1.0
osHL
Note:
Parameter guaranteed by design.
(t = |t − t |, t = |t
− t |)
pHLn
osLH
pLHm
pLHn osHL
pHLm
Dynamic Switching Characteristics (Ta = 25°C, input: t = t = 2.5 ns, C = 50 pF, R = 500 Ω)
r
f
L
L
Characteristics
Symbol
Test Condition
Typ.
Unit
V
(V)
CC
3.3
3.3
Quiet output maximum dynamic V
V
V
V
= 3.3 V, V = 0 V
IL
0.8
0.8
V
V
OL
OLP
OLV
IH
IH
Quiet output minimum dynamic V
|V
|
= 3.3 V, V = 0 V
OL
IL
4
2007-10-19
TC74LCX540F/FT/FK
Capacitive Characteristics (Ta = 25°C)
Characteristics
Symbol
Test Condition
Typ.
Unit
V
(V)
CC
Input capacitance
C
⎯
⎯
3.3
7
8
pF
pF
pF
IN
Output capacitance
C
OUT
3.3
3.3
Power dissipation capacitance
C
f
IN
= 10 MHz
(Note)
40
PD
Note:
C
PD
is defined as the value of the internal equivalent capacitance which is calculated from the operating
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
2007-10-19
TC74LCX540F/FT/FK
AC Test Circuit
Open
6.0 V
GND
Switch
Parameter
Switch
t
, t
Open
6.0 V
GND
pLH pHL
Output
Measure
t
, t
pLZ pZL
t
, t
pHZ pZH
C
= 50 pF
= 500 Ω
L
R
L
Figure 1
AC Waveform
t 2.5 ns
f
t 2.5 ns
r
2.7 V
GND
90%
1.5 V
10%
Input
(A)
V
OH
OL
Output
( Y )
1.5 V
V
t
t
pHL
pLH
Figure 2 t
, t
pLH pHL
t 2.5 ns
r
t 2.5 ns
f
2.7 V
GND
3.0 V
90%
1.5 V
Output Enable
( OE )
10%
t
t
t
pLZ
pZL
Output ( Y )
Low to Off to Low
1.5 V
1.5 V
V
OL
+ 0.3 V
V
V
OL
t
pHZ
pZH
OH
V
− 0.3 V
OH
Output ( Y )
High to Off to High
GND
Outputs
enabled
Outputs
disabled
Outputs
enabled
Figure 3 t
, t
, t
, t
pLZ pHZ pZL pZH
6
2007-10-19
TC74LCX540F/FT/FK
Package Dimensions
Weight: 0.22 g (typ.)
7
2007-10-19
TC74LCX540F/FT/FK
Package Dimensions
Weight: 0.08 g (typ.)
8
2007-10-19
TC74LCX540F/FT/FK
Package Dimensions
Weight: 0.03 g (typ.)
9
2007-10-19
TC74LCX540F/FT/FK
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.
10
2007-10-19
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