TC74LCXZ16240FT [TOSHIBA]
IC LVC/LCX/Z SERIES, QUAD 4-BIT DRIVER, INVERTED OUTPUT, PDSO48, 6.10 MM, 0.50 MM PITCH, PLASTIC, TSSOP-48, Bus Driver/Transceiver;
| 型号： | TC74LCXZ16240FT |
| 厂家： | 
TOSHIBA |
| 描述： | IC LVC/LCX/Z SERIES, QUAD 4-BIT DRIVER, INVERTED OUTPUT, PDSO48, 6.10 MM, 0.50 MM PITCH, PLASTIC, TSSOP-48, Bus Driver/Transceiver 驱动 光电二极管 输出元件 逻辑集成电路 |
| 文件： | 总9页 (文件大小：144K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TC74LCXZ16240FT
Preliminary TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LCXZ16240FT
Low-Voltage 16-Bit Bus Buffer (inverted) with 5-V Tolerant Inputs and Outputs
The TC74LCXZ16240FT is a high-performance CMOS 16-bit
bus buffer. 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 device is inverting 3-state buffer having four active-low
output enables. It can be used as four 4-bit buffers two 8-bit
buffers or one 16-bit buffer. When the OE input is high, the
outputs are in a high-impedance state. This device is designed to
be used with 3-state memory address drivers, etc.
Weight: 0.25 g (typ.)
When V
CC
is between 0 and 1.5 V, the LCXZ16240 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
= 3.0 to 3.6 V)
= 24 mA (min) (V = 3.0 V)
pd CC
Output current: |I |/I
OH OL CC
Latch-up performance: ±500 mA
Package: TSSOP (thin shrink small outline package)
Power-down protection provided on all inputs and outputs
Supports live insersion/withdrawal: guaranteed power up/down high impedance
1
2002-01-11
TC74LCXZ16240FT
Pin Assignment (top view)
IEC Logic Symbol
1
EN1
EN2
EN3
EN4
1OE
2OE
3OE
4OE
1
2
3
4
5
6
7
8
9
48
1OE
1Y1
1Y2
GND
1Y3
1Y4
2OE
48
25
24
47 1A1
46 1A2
45 GND
44 1A3
43 1A4
47
46
44
43
41
40
38
37
36
35
33
32
30
29
27
26
2
3
1A1
1A2
1A3
1A4
2A1
2A2
2A3
2A4
3A1
3A2
3A3
3A4
4A1
4A2
4A3
4A4
1
1
1
1
1
2
3
4
1Y1
1Y2
1Y3
1Y4
2Y1
2Y2
2Y3
2Y4
3Y1
3Y2
3Y3
3Y4
4Y1
4Y2
4Y3
4Y4
5
6
8
9
V
42
V
CC
CC
11
12
13
14
16
17
19
20
22
23
2Y1
2Y2
41 2A1
40 2A2
39 GND
38 2A3
37 2A4
36 3A1
35 3A2
34 GND
33 3A3
32 3A4
GND 10
2Y3 11
2Y4 12
3Y1 13
3Y2 14
GND 15
3Y3 16
3Y4 17
V
18
31
V
CC
CC
4Y1 19
4Y2 20
GND 21
4Y3 22
30 4A1
29 4A2
28 GND
27 4A3
26 4A4
23
24
4Y4
4OE
25
3OE
2
2002-01-11
TC74LCXZ16240FT
Truth Table
System Diagram
Inputs
Outputs
1OE
2OE
3OE
4OE
1OE
L
1A1-1A4
1Y1-1Y4
L
H
X
H
L
L
H
Z
1A1-1A4
2A1-2A4
1Y1-1Y4
2Y1 - 2Y4
3Y1- 3Y4
4Y1- 4Y4
3A1-3A4
Inputs
Inputs
Inputs
Outputs
4A1-4A4
1/4
2OE
L
2A1-2A4
2Y1 - 2Y4
L
H
X
H
L
L
H
Z
Outputs
3OE
L
3A1-3A4
3Y1- 3Y4
L
H
X
H
L
L
H
Z
Outputs
4OE
L
4A1-4A4
4Y1- 4Y4
L
H
X
H
L
L
H
Z
X: Don’t care
Z: High impedance
3
2002-01-11
TC74LCXZ16240FT
Maximum Ratings
Characteristics
Symbol
Rating
Unit
Power supply voltage
Input voltage
V
−0.5 to 7.0
V
V
CC
V
−0.5 to 7.0
IN
−0.5 to 7.0(Note 1)
Output voltage
V
V
−0.5 to V
+ 0.5
OUT
CC
(Note 2)
Input diode current
Output diode current
DC output current
Power dissipation
I
−50
mA
mA
mA
mW
mA
°C
IK
I
±50
±50
(Note 3)
OK
I
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
Power supply voltage
Symbol
Rating
Unit
V
2.7 to 3.6
V
V
CC
Input voltage
V
0 to 5.5
IN
0 to 5.5 (Note 4)
Output voltage
V
V
OUT
0 to V
(Note 5)
(Note 6)
(Note 7)
CC
±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 1.5 V
0 to 10 (Note 8)
ns/V
Note 4: Outputs 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
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2002-01-11
TC74LCXZ16240FT
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 µA
= −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
TC74LCXZ16240FT
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
1.0
1.0
1.0
1.0
1.0
1.0
5.3
4.5
6.0
5.4
5.4
5.3
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
Output capacitance
C
OUT
Power dissipation capacitance
C
f
= 10 MHz
IN
(Note 11)
25
PD
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
TC74LCXZ16240FT
AC Test Circuit
Open
6.0 V
GND
Switch
Parameter
, t
Switch
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
r
t 2.5 ns
f
2.7 V
90%
1.5 V
Input
(A)
10%
GND
V
V
OH
OL
Output
( Y )
1.5 V
t
t
pLH
pHL
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 )
1.5 V
1.5 V
Low to Off to Low
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
7
2002-01-11
TC74LCXZ16240FT
Package Dimensions
Weight: 0.25 g (typ.)
8
2002-01-11
TC74LCXZ16240FT
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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