TC74LCXZ16245FT [TOSHIBA]
IC LVC/LCX/Z SERIES, DUAL 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO48, 6.10 MM, 0.50 MM PITCH, PLASTIC, TSSOP-48, Bus Driver/Transceiver;
| 型号： | TC74LCXZ16245FT |
| 厂家： | 
TOSHIBA |
| 描述： | IC LVC/LCX/Z SERIES, DUAL 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO48, 6.10 MM, 0.50 MM PITCH, PLASTIC, TSSOP-48, Bus Driver/Transceiver 光电二极管 输出元件 逻辑集成电路 |
| 文件： | 总9页 (文件大小：146K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TC74LCXZ16245FT
Preliminary TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LCXZ16245FT
Low-Voltage 16-Bit Bus Transceiver with 5-V Tolerant Inputs and Outputs
The TC74LCXZ16245FT is a high-performance CMOS 16-bit
bus transceiver. Designed for use in 3.3-V systems, it achieves
high-speed 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.
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.)
When V
CC
is between 0 and 1.5 V, the LCXZ16245 is in the high-impedance state during power up or power down.
This place the outputs in high-impedance (Z) state preventing intermittent low-impedance loading or glitching in
bus oriented applications.
All inputs are equipped with protection circuits against static discharge.
Features
•
•
•
•
•
•
•
•
Low-voltage operation: V = 2.7 to 3.6 V
CC
High-speed operation: t = 4.5 ns (max) (V
pd CC
= 3.0 to 3.6 V)
= 3.0 V)
Ouput current: |I |/I
= 24 mA (min) (V
OH OL CC
Latch-up performance: ±500 mA
Package: TSSOP (thin shrink small outline package)
Bidirectional interface between 5.0 V and 3.3 V signals
Power-down protection provided on all inputs and outputs
Supports live insersion/withdrawal: guaranteed power up/down high impedance
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
2002-01-11
TC74LCXZ16245FT
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
2002-01-11
TC74LCXZ16245FT
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
2002-01-11
TC74LCXZ16245FT
Maximum Ratings
Characteristics
Symbol
Rating
Unit
V
Power supply voltage
DC input voltage
(DIR, OE )
V
−0.5 to 7.0
CC
V
−0.5 to 7.0
V
IN
−0.5 to 7.0(Note 1)
DC bus I/O voltage
V
I
V
−0.5 to V
+ 0.5
I/O
CC
(Note 2)
Input diode current
Output diode current
DC output current
Power dissipation
−50
±50
mA
mA
mA
mW
mA
°C
IK
I
(Note 3)
OK
I
±50
OUT
P
400
D
DC V /ground current per supply pin
CC
I
/I
±100
CC GND
Storage temperature
T
−65 to 150
stg
Note 1: Outputs in OFF state or V
= 0 to 1.5 V
CC
Note 2: High or low state. I
absolute maximum rating must be observed.
OUT
Note 3: V
OUT
< GND, V
OUT
> V
CC
Recommended Operating Range
Characteristics
Symbol
Rating
Unit
V
Power supply voltage
Input voltage
V
2.7 to 3.6
CC
V
0 to 5.5
V
V
IN
(DIR, OE )
0 to 5.5 (Note 4)
Bus I/O voltage
Output current
V
I/O
0 to V
(Note 5)
(Note 6)
(Note 7)
CC
±24
±12
I
/I
mA
OH OL
Operating temperature
Input rise and fall time
T
−40 to 85
°C
opr
dt/dv
= 0 to 1.5 V
0 to 10 (Note 8)
ns/V
Note 4: Output in OFF state or V
Note 5: High or low state
CC
Note 6: V
Note 7: V
= 3.0 to 3.6 V
= 2.7 to 3.0 V
CC
CC
Note 8: V = 0.8 to 2.0 V, V
IN CC
= 3.0 V
4
2002-01-11
TC74LCXZ16245FT
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
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
3.0
3.0
Input leakage current
I
V
V
V
V
V
V
V
V
V
= 0 to 5.5 V
2.7 to 3.6
µA
µA
µA
µA
IN
IN
= V or V
IL
IN
IH
3-state output OFF state current
Power-off leakage current
I
2.7 to 3.6
0
±5.0
10.0
±5.0
OZ
= 0 to 5.5 V
OUT
I
/V
IN OUT
= 5.5 V
OFF
= 0.5 to V
OUT
CC
Power up/down OFF state current
I
0 to 1.5
PU/PD
= V
or GND
IN
IN
CC
CC
= V
/V
or GND
2.7 to 3.6
225
±225
500
I
CC
Quiescent supply current
µA
= 3.6 to 5.5 V
(Note 9) 2.7 to 3.6
2.7 to 3.6
IN OUT
∆I
= V − 0.6 V (per input)
CC
CC
IH
Note 9: Outputs high-impedance
5
2002-01-11
TC74LCXZ16245FT
AC Characteristics (Ta = −40 to 85°C)
Characteristics
Propagation delay time
3-state output enable time
3-state output disable time
Output to output skew
Symbol
Test Condition
Min
Max
Unit
ns
V
(V)
CC
t
t
2.7
1.5
1.5
1.5
1.5
1.5
1.5
5.2
4.5
7.2
6.5
6.9
6.4
pLH
pHL
Figure 1, Figure 2
3.3 ± 0.3
2.7
t
pZL
Figure 1, Figure 3
Figure 1, Figure 3
ns
t
3.3 ± 0.3
2.7
pZH
t
pLZ
ns
t
3.3 ± 0.3
2.7
pHZ
t
t
osLH
osHL
(Note 10)
ns
3.3 ± 0.3
1.0
Note 10: Parameter guaranteed by design.
(t = |t − t |, t = |t − t
pHLm
|)
pHLn
osLH
pLHm
pLHn osHL
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
Quiet output maximum
dynamic V
V
V
V
= 3.3 V, V = 0 V
3.3
3.3
0.8
0.8
V
V
OLP
OLV
IH
IH
IL
OL
Quiet output minimum
dynamic V
|V
|
= 3.3 V, V = 0 V
IL
OL
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 11)
25
IN
Note 11: 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
2002-01-11
TC74LCXZ16245FT
AC Test Circuit
Open
6.0 V
GND
Switch
Parameter
, t
Switch
t
Open
6.0 V
GND
pLH pHL
Output
Measure
C = 50 pF
t
, t
pLZ pZL
t
, t
pHZ pZH
L
R = 500 Ω
L
Figure 1
AC Waveform
t 2.5 ns
r
t 2.5 ns
f
2.7 V
90%
1.5 V
Input
10%
(An, Bn)
GND
V
V
OH
OL
Output
(Bn, An)
1.5 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 (An, Bn)
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 (An, Bn)
High to Off to High
GND
Outputs
enabled
Outputs
disabled
Outputs
enabled
Figure 3 t
, t
, t
, t
pLZ pHZ pZL pZH
7
2002-01-11
TC74LCXZ16245FT
Package Dimensions
Weight: 0.25 g (typ.)
8
2002-01-11
TC74LCXZ16245FT
RESTRICTIONS ON PRODUCT USE
000707EBA
• 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 this
document shall be made at the customer’s own risk.
• The products described in this document are subject to the foreign exchange and foreign trade laws.
• The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other
rights of the third parties which may result from its use. No license is granted by implication or otherwise under
any intellectual property or other rights of TOSHIBA CORPORATION or others.
• The information contained herein is subject to change without notice.
9
2002-01-11
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