TC74LCX16245FT [TOSHIBA]
Low-Voltage 16-Bit Bus Transceiver with 5-V Tolerant Inputs and Outputs; 低电压16位总线收发器，具有5V容限输入和输出
| 型号： | TC74LCX16245FT |
| 厂家： | 
TOSHIBA |
| 描述： | Low-Voltage 16-Bit Bus Transceiver with 5-V Tolerant Inputs and Outputs |
| 文件： | 总9页 (文件大小：187K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TC74LCX16245FT
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LCX16245FT
Low-Voltage 16-Bit Bus Transceiver with 5-V Tolerant Inputs and Outputs
The TC74LCX16245FT is a high-performance CMOS 16-bit bus
transceiver. Designed for use in 2.5-V or 3.3-V systems, it
achieves high-speed operation while maintaining the CMOS low
power dissipation.
The device is designed for low-voltage (2.5-V or 3.3-V) V
CC
applications, but it could be used to interface to 5-V supply
environment for both inputs and outputs.
This 16-bit bus transceiver is controlled by direction control
(DIR) inputs and output enable ( OE ) inputs which are common
to each byte. It can be used as two 8-bit transceiver or one 16-bit
transceiver. The direction of data transmission is determined by
the level of the DIR inputs. The OE inputs can be used to
disable the device so that the busses are effectively isolated.
Weight: 0.25 g (typ.)
All inputs are equipped with protection circuits against static discharge.
Features (Note)
•
•
•
•
•
•
•
Low-voltage operation: V
= 2.0 to 3.6 V
CC
High-speed operation: t = 4.5 ns (max) (V
= 3.0 to 3.6 V)
pd
CC
Ouput current: |I |/I
= 24 mA (min) (V
= 3.0 V)
OH OL
CC
Latch-up performance: −500 mA
Package: TSSOP
Bidirectional interface between 5.0 V and low-voltage (2.5-V or 3.3-V) signals
Power-down protection provided on all inputs and outputs
Note: Do not apply a signal to any bus pins when it is in the output mode. Damage may result.
All floating (high impedance) bus pins must have their input level fixed by means of pull-up or pull-down
resistors.
1
2007-10-19
TC74LCX16245FT
Pin Assignment (top view)
IEC Logic Symbol
48
1
G3
1OE
1
2
3
4
5
6
7
8
9
48
1DIR
1B1
1B2
GND
1B3
1B4
1OE
1DIR
3 EN1 (BA)
3 EN2 (AB)
G6
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
25
24
2OE
2DIR
6 EN4 (BA)
6 EN5 (AB)
47
2
1A1
1
1B1
2
46
44
43
41
40
38
37
36
3
5
1A2
1A3
1A4
1A5
1A6
1A7
1A8
2A1
1B2
1B3
1B4
1B5
1B6
1B7
1B8
2B1
V
42
V
CC
CC
6
8
1B5
1B6
41 1A5
40 1A6
39 GND
38 1A7
37 1A8
36 2A1
35 2A2
34 GND
33 2A3
32 2A4
9
11
12
13
GND 10
1B7 11
1B8 12
2B1 13
2B2 14
GND 15
2B3 16
2B4 17
4
5
35
33
32
30
29
27
26
14
16
17
19
20
22
23
2A2
2A3
2A4
2A5
2A6
2A7
2A8
2B2
2B3
2B4
2B5
2B6
2B7
2B8
V
18
31
V
CC
CC
2B5 19
2B6 20
GND 21
2B7 22
2B8 23
2DIR 24
30 2A5
29 2A6
28 GND
27 2A7
26 2A8
25
2OE
2
2007-10-19
TC74LCX16245FT
Truth Table
Inputs
Function
Outputs
Bus
Bus
1B1-1B8
1OE
1DIR
1A1-1A8
Output
Input
L
L
L
H
X
Input
A = B
B = A
Z
Output
H
Z
Inputs
Function
Outputs
Bus
Bus
2B1-2B8
2OE
2DIR
2A1-2A8
Output
Input
L
L
L
H
X
Input
A = B
B = A
Z
Output
H
Z
X: Don’t care
Z: High impedance
System Diagram
1DIR
2DIR
1OE
2OE
1A1
1B1
2B1
2A1
1/8
3
2007-10-19
TC74LCX16245FT
Absolute Maximum Ratings (Note 1)
Characteristics
Power supply voltage
DC input voltage
(DIR, OE )
Symbol
Rating
Unit
V
V
−0.5 to 6.0
CC
V
−0.5 to 7.0
V
V
IN
−0.5 to 7.0 (Note 2)
DC bus I/O voltage
V
I
I/O
−0.5 to V
+ 0.5 (Note 3)
−50
CC
Input diode current
Output diode current
DC output current
Power dissipation
mA
mA
mA
mW
mA
°C
IK
I
±50
±50
400
(Note 4)
OK
I
OUT
P
D
DC V /ground current per supply pin
CC
I
/I
CC GND
±100
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 > V
OUT CC
Operating Ranges (Note 1)
Characteristics
Symbol
Rating
Unit
V
2.0 to 3.6
Power supply voltage
V
CC
1.5 to 3.6 (Note 2)
Input voltage
(DIR, OE )
V
0 to 5.5
V
V
IN
0 to 5.5 (Note 3)
Bus I/O voltage
V
I/O
0 to V
(Note 4)
(Note 5)
(Note 6)
(Note 7)
CC
±24
±12
Output current
I
/I
mA
OH OL
±8
Operating temperature
Input rise and fall time
T
−40 to 85
°C
opr
dt/dv
0 to 10 (Note 8)
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. Please connect both bus inputs and the bus outputs with VCC or GND when
the I/O of the bus terminal changes by the function. In this case, please note that the output is not
short-circuited.
Note 2: Data retention only
Note 3: Output in OFF state
Note 4: High or low state
Note 5:
Note 6:
Note 7:
Note 8:
V
V
V
V
= 3.0 to 3.6 V
= 2.7 to 3.0 V
= 2.3 to 2.7 V
CC
CC
CC
= 0.8 to 2.0 V, V
= 3.0 V
IN
CC
4
2007-10-19
TC74LCX16245FT
Electrical Characteristics
DC Characteristics (Ta = −40 to 85°C)
Characteristics
Symbol
Test Condition
Min
Max
Unit
V
V
(V)
CC
2.3 to 2.7
2.7 to 3.6
2.3 to 2.7
2.7 to 3.6
1.7
2.0
⎯
⎯
⎯
H-level
V
⎯
⎯
IH
Input voltage
0.7
0.8
L-level
V
IL
⎯
V
CC
I
= −100 μA
2.3 to 3.6
⎯
⎯
OH
− 0.2
1.8
2.2
2.4
2.2
⎯
I
I
I
I
I
I
I
I
I
= −8 mA
= −12 mA
= −18 mA
= −24 mA
= 100 μA
= 8 mA
2.3
2.7
OH
OH
OH
OH
OL
OL
OL
OL
OL
H-level
V
V
= V or V
OH
IN
IH
IL
3.0
⎯
⎯
3.0
Output voltage
V
2.3 to 3.6
2.3
0.2
0.6
0.4
0.4
0.55
±5.0
⎯
L-level
V
V
= V or V
= 12 mA
= 16 mA
= 24 mA
2.7
⎯
OL
IN
IH
IL
3.0
⎯
3.0
⎯
Input leakage current
I
V
V
V
V
V
V
V
= 0 to 5.5 V
2.3 to 3.6
⎯
μA
μA
μA
IN
IN
= V or V
IH
IN
IL
3-state output OFF state current
Power-off leakage current
Quiescent supply current
Increase in Icc per input
I
2.3 to 3.6
⎯
±5.0
OZ
= 0 to 5.5 V
OUT
I
/V
IN OUT
= 5.5 V
0
⎯
⎯
⎯
⎯
10.0
20.0
±20.0
500
OFF
= V
or GND
CC
2.3 to 3.6
2.3 to 3.6
2.3 to 3.6
IN
I
CC
μA
/V
= 3.6 to 5.5 V
− 0.6 V
CC
IN OUT
ΔI
CC
= V
IH
5
2007-10-19
TC74LCX16245FT
AC Characteristics (Ta = −40 to 85°C)
Characteristics
Symbol
Test Condition
Min
Max
Unit
ns
V
(V)
CL(pF)
30
CC
2.5 ± 0.2
2.7
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
⎯
5.4
5.2
4.5
8.5
7.2
6.5
7.7
6.9
6.0
⎯
t
t
pLH
pHL
Propagation delay time
Figure 1, Figure 2
50
3.3 ± 0.3
2.5 ± 0.2
2.7
50
30
t
pZL
3-state output enable time
3-state output disable time
Output to output skew
Figure 1, Figure 3
Figure 1, Figure 3
ns
ns
ns
50
t
pZH
3.3 ± 0.3
2.5 ± 0.2
2.7
50
30
t
pLZ
50
t
pHZ
3.3 ± 0.3
2.5 ± 0.2
2.7
50
30
t
t
osLH
osHL
(Note)
50
⎯
⎯
3.3 ± 0.3
50
⎯
1.0
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, R = 500 Ω)
r
f
L
Characteristics
Symbol
Test Condition
Typ.
Unit
V
V
(V)
CC
V
V
V
V
= 2.5 V, V = 0 V, C =30pF
2.5
3.3
2.5
3.3
0.6
0.8
0.6
0.8
IH
IH
IH
IH
IL
L
Quiet output maximum
dynamic V
V
OLP
OLV
OL
= 3.3 V, V = 0 V, C =50pF
IL
L
= 2.5 V, V = 0 V, C =30pF
IL
L
Quiet output minimum
dynamic V
|V
|
V
OL
= 3.3 V, V = 0 V, C =50pF
IL
L
Capacitive Characteristics (Ta = 25°C)
Characteristics
Symbol
Test Condition
Typ.
Unit
V
(V)
CC
Input capacitance
C
⎯
⎯
3.3
3.3
3.3
7
8
pF
pF
pF
IN
I/O
PD
Bus input capacitance
C
C
Power dissipation capacitance
f
= 10 MHz
(Note)
25
IN
Note:
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 /16 (per bit)
PD CC IN CC
CC (opr)
6
2007-10-19
TC74LCX16245FT
AC Test Circuit
6.0 V or V
Open
GND
× 2
CC
Parameter
Switch
Open
Switch
t
, t
pLH pHL
6.0 V
× 2
@V
@V
= 3.3 ± 0.3 V
= 2.5 ± 0.2 V
CC
CC
Output
Measure
t
, t
pLZ pZL
V
CC
t
, t
pHZ pZH
GND
R = 500 Ω
L
Figure 1
AC Waveform
t 2.5 ns
r
t 2.5 ns
f
V
IH
90%
VM
Input
10%
(An, Bn)
GND
V
V
OH
OL
Output
VM
(Bn, An)
t
t
pHL
pLH
Figure 2 t
, t
pLH pHL
t 2.5 ns
r
t 2.5 ns
f
VIH
90%
VM
Output Enable
( OE )
10%
GND
t
t
t
pLZ
pHZ
pZL
3.0 V or Vcc
Output (An, Bn)
VM
VM
Low to Off to Low
V
V
X
Y
V
V
OL
t
pZH
OH
Output (An, Bn)
High to Off to High
GND
Outputs
enabled
Outputs
disabled
Outputs
enabled
Figure 3 t
, t
, t
, t
pLZ pHZ pZL pZH
V
CC
Symbol
3.3 ± 0.3 V
2.7 V
2.7 V
2.7 V
1.5 V
2.5 ± 0.2 V
V
V
IH
CC
/2
V
1.5 V
V
CC
M
V
V
V
+ 0.3 V
− 0.3 V
V
+ 0.3 V
V
+ 0.15 V
− 0.15 V
X
OL
OL
OL
V
V
− 0.3 V
V
OH
Y
OH
OH
7
2007-10-19
TC74LCX16245FT
Package Dimensions
Weight: 0.25 g (typ.)
8
2007-10-19
TC74LCX16245FT
RESTRICTIONS ON PRODUCT USE
20070701-EN
• 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.
• 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
2007-10-19
相关型号：
TC74LCX16373AFT(EL)
IC LVC/LCX/Z SERIES, DUAL 8-BIT DRIVER, TRUE OUTPUT, PDSO48, 6.10 MM, PLASTIC, TSSOP-48, Bus Driver/Transceiver
TOSHIBA
TC74LCX16373AFT(ELP)
IC LVC/LCX/Z SERIES, DUAL 8-BIT DRIVER, TRUE OUTPUT, PDSO48, 6.10 MM, PLASTIC, TSSOP-48, Bus Driver/Transceiver
TOSHIBA
TC74LCX16373AFTEL
IC LVC/LCX/Z SERIES, DUAL 8-BIT DRIVER, TRUE OUTPUT, PDSO48, 6.10 MM, PLASTIC, TSSOP-48, Bus Driver/Transceiver
TOSHIBA
©2020 ICPDF网 联系我们和版权申明