TC74LVXC3245FS(E,F [TOSHIBA]
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| 型号： | TC74LVXC3245FS(E,F |
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TC74LVXC3245FS
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LVXC3245FS
Dual Supply Octal Configurable Voltage Interface Bus Transceiver
The TC74LVXC3245FS is a dual supply, advanced high-speed
CMOS octal configurable voltage interface bus transceiver
fabricated with silicon gate CMOS technology.
Designed for use as an interface between a 3.3 V bus and a 3.3V
to 5 V bus in mixed 3.3 V/5 V supply systems’ it achieves
high-speed operation while maintaining the CMOS low power
dissipation.
It is intended for 2 way asynchronous communication between
data busses.
The direction of data transmission is determined by the level of the
DIR input. The enable input ( G ) can be used to disable the device
so that the buses are effectively isolated. The A-port interfaces with
the 3.3-V bus, the B-port with the 3.3V to 5V bus. This device will
Weight: 0.14 g (typ.)
allow the V
voltage source pin and I/O pins on the B port to float when G is “H”.
CCB
All inputs are equipped with protection circuits against static discharge or transient excess voltage.
Features
•
•
Bi-directional interface between 3 V and 5 V buses
High-speed: t = 8.5 ns (max)
pd
(V
CCA
= 3.3 V, V
= 5.0 V)
CCB
•
•
Low power dissipation: I
= 8 μA (max) (Ta = 25°C)
CC
Symmetrical output impedance:
I
= ±24 mA (min)
= ±24 mA (min)
OUTA
OUTB
I
(V
CCA
= V
= 3.0 V)
CCB
•
•
•
•
Low noise: V
= 1.5 V (max)
OLP
Flexible V
operating range
CCB
Allows B port and V
to float simultaneously when G is “H”
CCB
Package: SSOP (shrink small outline package)
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 pin must have their input levels fixed by means of pull-up or pull-down
resistors.
1
2007-10-17
TC74LVXC3245FS
Pin Assignment (top view)
IEC Logic Symbol
(22)
(2)
G
G3
V
1
2
3
4
5
6
7
8
9
24
23 NC
22
V
CCA
DIR
CCB
DIR
3 EN 1 (BA)
3 EN 2 (AB)
1
A1
A2
A3
A4
A5
A6
A7
G
(3)
(21)
A1
B1
21 B1
20 B2
19 B3
18 B4
17 B5
16 B6
15 B7
14 B8
13 GND
2
(20)
(19)
(18)
(17)
(16)
(15)
(14)
(4)
(5)
(6)
(7)
(8)
A2
A3
A4
A5
A6
A7
A8
B2
B3
B4
B5
B6
B7
B8
A8 10
(9)
GND 11
GND 12
(10)
Truth Table
Inputs
Function
A-Bus
Outputs
G
L
DIR
L
B-Bus
Input
A = B
B = A
Z
Output
Input
L
H
Output
H
X
High impedance
X: Don’t care
Z: High impedance
2
2007-10-17
TC74LVXC3245FS
Block Diagram
V
CCA
V
CCB
DIR
G
Logic
level
converter
A1
B1
B8
Same as above block
A8
Absolute Maximum Ratings (Note 1)
Characteristics
Supply voltage range
Symbol
Rating
Unit
V
V
V
−0.5 to 7.0
−0.5 to 7.0
−0.5 to
CCA
CCB
(Note 2)
(DIR, G )
DC input voltage
V
IN
V
V
V
V
V
+ 0.5
CCA
−0.5 to
V
I/OA
V
I/OB
+ 0.5
CCA
DC bus I/O voltage
−0.5 to
+ 0.5
CCB
Input diode current
Output diode current
I
±20
mA
mA
IK
I
±50
±50
I/OK
I
I
OUTA
OUTB
DC output current
mA
mA
±50
I
I
±200
±200
180
CCA
DC V /ground current
CC
CCB
Power dissipation
P
mW
D
Storage temperature
T
stg
−65 to 150
°C
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: Don’t supply a voltage to V
CCB
terminal when V is in the OFF state.
CCA
3
2007-10-17
TC74LVXC3245FS
Operating Ranges (Note)
Characteristics
Symbol
Rating
Unit
V
V
2.7 to 3.6
3.0 to 5.5
CCA
Supply voltage
V
V
CCB
Input voltage
(DIR, G )
V
0 to V
0 to V
0 to V
IN
CCA
CCA
CCB
V
V
I/OA
I/OB
Bus I/O voltage
V
Operating temperature
T
opr
−40 to 85
°C
0 to 8
(V
(V
= 2.7 to 3.6 V)
0 to 8
CCA
Input rise and fall time
dt/dv
ns/V
= 3.0 to 5.5 V)
CCB
Note: The operating ranges are required to ensure the normal operation of the device. Unused inputs and bus 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.
4
2007-10-17
TC74LVXC3245FS
Electrical Characteristics
DC Characteristics
Ta = −40 to
Ta = 25°C
85°C
Sym-
bol
Characteristics
Test Condition
Unit
V
(V)
V
CCB
(V)
Min
Typ.
Max
Min
Max
CCA
2.7
3.0
3.6
2.7
3.0
3.6
2.7
3.0
3.6
2.7
3.0
3.6
3.0
3.6
5.5
3.0
3.6
5.5
3.0
3.6
5.5
3.0
3.6
5.5
2.0
2.0
2.0
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
2.0
2.0
2.0
⎯
⎯
⎯
V
DIR, G , An
DIR, G , An
Bn
IHA
Input
voltage
⎯
⎯
V
0.8
0.8
0.8
⎯
0.8
0.8
0.8
⎯
(V
CCA
)
V
⎯
⎯
ILA
⎯
⎯
2.0
2.0
3.85
⎯
2.0
2.0
3.85
⎯
V
IHB
⎯
⎯
Input
voltage
⎯
⎯
V
0.8
0.8
1.65
0.8
0.8
1.65
(V
CCB
)
V
Bn
⎯
⎯
ILB
⎯
⎯
I
OH
= −100 μA
3.0
3.0
3.0
2.7
2.7
3.0
3.0
2.7
2.7
3.0
3.0
3.0
3.0
4.5
3.0
3.0
3.0
4.5
2.9
2.56
2.35
2.3
2.1
⎯
3.0
⎯
⎯
⎯
⎯
0.0
⎯
⎯
⎯
⎯
⎯
2.9
2.46
2.25
2.2
2.0
⎯
⎯
⎯
I
OH
= −12 mA
I
OH
= −24 mA
V
OHA
⎯
⎯
I
OH
⎯
⎯
= −12 mA
V
V
= V
= V
or
or
INA
ILA
IHA
Output
voltage
I
OH
V
⎯
⎯
= −24 mA
V
INB
V
ILB
IHB
(V
CCA
)
I
OL
= 100 μA
0.1
0.36
0.36
0.42
0.1
0.44
0.44
0.5
I
OL
= 24 mA
⎯
⎯
V
OLA
I
OL
= 12 mA
⎯
⎯
I
OL
= 24 mA
⎯
⎯
5
2007-10-17
TC74LVXC3245FS
DC Characteristics (continued)
Ta = −40 to
Ta = 25°C
85°C
Sym-
bol
Characteristics
Test Condition
Unit
V
(V)
V
(V)
Min
2.9
2.56
2.35
3.86
⎯
Typ.
Max
⎯
Min
2.9
2.46
2.25
3.76
⎯
Max
⎯
CCA
3.0
CCB
I
OH
= −100 μA
3.0
3.0
⎯
I
OH
= −12 mA
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
4.5
3.0
3.0
4.5
⎯
⎯
V
OHB
I
OH
⎯
⎯
⎯
= −24 mA
V
= V
INA
IHA
Output
voltage
or V
or V
ILA
I
OH
V
⎯
⎯
⎯
= −24 mA
V
INB
(V
CCB
)
= V
IHB
ILB
I
OL
= 100 μA
0.0
⎯
0.1
0.36
0.36
0.1
0.44
0.44
I
OL
= 24 mA
V
OLB
⎯
⎯
I
OL
= 24 mA
⎯
⎯
⎯
3.6
3.6
3.6
3.6
3.6
3.6
3.6
5.5
3.6
5.5
3.6
5.5
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
±0.5
±0.5
±0.5
±0.5
±0.1
±0.1
⎯
⎯
⎯
⎯
⎯
⎯
±5.0
±5.0
±5.0
±5.0
±1.0
±1.0
V
V
= V
or V
or V
INA
IHA
ILA
I
I
OZA
3-state output
= V
INB
IHB
ILB
μA
Off-state
current
VI/OA = V
VI/OB = V
or GND
or GND
CCA
CCB
OZB
Input leakage
current
V
IN
= V
(DIR, G )
I
IN
μA
or GND
CCA
PER INPUT:
I
V
INA
V
INA
= V
= V
−0.6 V
−0.6 V
3.6
3.6
⎯
⎯
0.35
⎯
0.5
mA
CCT
CCA
CCB
An = V
CCA
or GND
Bn = Open,
I
I
3.6
Open
⎯
⎯
5
⎯
50
CCA1
G
= V
CCA
Quiescent
supply current
DIR = V
,
CCA
= Open
V
V
V
CCB
μA
= V
or V
3.6
3.6
3.6
3.6
3.6
5.5
3.6
5.5
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
5
5
5
8
⎯
⎯
⎯
⎯
50
50
50
80
INA
IHA
IHB
ILA
CCA2
= V
or V
INB
ILB
V
V
= V
= V
or V
or V
INA
IHA
ILA
I
CCB
INB
IHB
ILB
6
2007-10-17
TC74LVXC3245FS
AC Characteristics (input: t = t = 3 ns, C = 50 pF, R = 500 Ω)
r
f
L
L
Ta = −40 to
Ta = 25°C
85°C
Test Condition
Characteristics
Symbol
Unit
VCCA(V) VCCB(V)
Min
Typ.
Max
Min
Max
Propagation delay time
t
t
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
5.7
6.2
6.5
7.4
7.3
6.6
4.6
5.2
7.0
7.0
6.1
6.0
⎯
8.0
8.5
9.5
10.5
9.5
9.5
7.5
7.5
10.5
10.5
9.5
9.5
1.5
1.5
10
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
⎯
8.5
9.0
pLH
ns
ns
ns
ns
ns
ns
ns
(An → Bn)
pHL
Input: An
3-state output enable time
t
t
10.0
11.5
10.0
10.0
8.0
pZL
Output: Bn
(DIR = “H”)
2.7 ~3.6
( G → Bn)
3.3 ± 0.3
pZH
3-state output disable time
t
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
pLZ
( G → Bn)
t
pHZ
Propagation delay time
t
t
pLH
(Bn → An)
8.0
pHL
Input: Bn
3-state output enable time
t
t
5.0 ± 0.5
11.5
11.5
10.0
10.0
1.5
pZL
2.7 ~ 3.6
Output: An
(DIR = “L”)
( G → An)
3.3 ± 0.3
5.0 ± 0.5
3.3 ± 0.3
5.0 ± 0.5
pZH
3-state output disable time
t
pLZ
( G → An)
t
pHZ
t
t
osLH
Output to output skew
(Note 1) 2.7 ~ 3.6
3.3 ± 0.3
⎯
⎯
1.5
osHL
Input capacitance
C
DIR, G
An, Bn
5
⎯
10
pF
pF
INA
Bus input capacitance
C
8
⎯
⎯
⎯
I/O
A → B
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
(DIR = “H”)
4
C
C
PDA
B → A
3.3 ± 0.3 5.0 ± 0.5
Power dissipation
capacitance
38
(DIR = “L”)
pF
A → B
(Note 2)
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
(DIR = “H”)
88
7
PDB
B → A
(DIR = “L”)
Note 1: Parameter guaranteed by design.
(t
= |t
− t
|, t
pLHn osHL
= |t
− t |)
pHLn
osLH
pLHm
pHLm
Note 2:
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)
7
2007-10-17
TC74LVXC3245FS
Noise Characteristics (Ta = 25°C, input: t = t = 3 ns, C = 50 pF, R = 500 Ω)
r
f
L
L
Characteristics
Symbol
Test Condition
Typ.
Limit
Unit
VCCA (V) VCCB (V)
3.3
3.3
3.3
3.3
3.3
3.3
3.3
5.0
3.3
5.0
3.3
5.0
⎯
⎯
⎯
⎯
⎯
⎯
0.9
0.9
Quiet output maximum
dynamic
V
V
V
V
(A)
(A)
(B)
(B)
(A)
(A)
(B)
(B)
V
Input: Bn
OL
OL
OL
OL
OLPA
Output: An
−0.9
−0.9
0.8
Quiet output mimimum
dynamic
(DIR = “L”)
V
OLVA
V
OLPB
V
OLVB
V
Quiet output maximum
dynamic
Input: An
1.5
Output: Bn
(DIR = “H”)
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
⎯
⎯
−0.8
−1.2
2.0
2.0
0.8
0.8
⎯
Quiet output mimimum
dynamic
⎯
Minimum high level dynamic
input voltage
V
V
Input: An
Input: An
Input: Bn
Input: Bn
V
V
V
V
IH
IHDA
⎯
⎯
Maximum low level dynamic
input Voltage
V
V
IL
ILDA
IHDB
⎯
2.0
3.5
0.8
1.5
Minimum high level dynamic
input voltage
V
V
IH
⎯
⎯
Maximum low level dynamic
input voltage
V
V
ILDB
IL
⎯
8
2007-10-17
TC74LVXC3245FS
Package Dimensions
Weight: 0.14 g (typ.)
9
2007-10-17
TC74LVXC3245FS
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.
10
2007-10-17
相关型号：
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TOSHIBA
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