TOSHIBA TC74LVX4245FS

TC74LVX4245FS
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74LVX4245FS
Dual Supply Octal Bus Transceiver
The TC74LVX4245FS is a dual supply, advanced high-speed
CMOS octal bus transceiver fabricated with silicon gate CMOS
technology.
Designed for use as an interface between a 5V bus and a 3.3V
bus in mixed 5V/3.3V 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 5V
bus, the B-port with the 3.3V bus.
All inputs are equipped with protection circuits against static
discharge or transient excess voltage.
Weight: 0.14 g (typ.)
Features
•
Bi-directional interface between 5 V and 3 V buses
•
High-speed: tpd = 6.0 ns (typ.)
(VCCA = 5.0 V, VCCB = 3.3 V)
•
Low power dissipation: ICC = 8 μA (max) (Ta = 25°C)
•
Symmetrical output impedance:
IOUTA = ±24 mA (min)
IOUTB = ±12 mA (min)
(VCCA = 4.5 V, VCCB = 3.0 V)
•
Low noise: VOLP = 1.5 V (max)
•
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
TC74LVX4245FS
Pin Assignment (top view)
IEC Logic Symbol
G
VCCA
1
24
VCCB
DIR
2
23
VCCB
A1
3
22
G
A2
4
21
B1
A3
5
20
B2
A2
A4
6
19
B3
A3
A5
7
18
B4
A6
8
17
B5
DIR
16
9
(2)
G3
3 EN 1 (BA)
3 EN 2 (AB)
A1
(3)
(21)
1
B1
2
A4
A5
A7
(22)
B6
A6
A8 10
15
B7
GND 11
14
B8
A7
GND 12
13
GND
A8
(4)
(20)
(5)
(19)
(6)
(18)
(7)
(17)
(8)
(16)
(9)
(15)
(10)
(14)
B2
B3
B4
B5
B6
B7
B8
Truth Table
Inputs
G
DIR
L
L
L
H
Outputs
Function
A-Bus
B-Bus
A=B
Output
Input
H
B=A
Input
Output
X
Z
High impedance
X: Don’t care
Z : High impedance
2
2007-10-17
TC74LVX4245FS
Block Diagram
VCCA
DIR
VCCB
Logic
level
converter
G
A1
B1
B8
Same as above block
A8
Absolute Maximum Ratings (Note 1)
Characteristics
Supply voltage range
(Note 2)
DC input voltage
Symbol
Rating
VCCA
−0.5 to 7.0
VCCB
−0.5 to VCCA + 0.5
VIN
−0.5 to VCCA + 0.5
Unit
V
V
VI/OA
−0.5 to VCCA + 0.5
VI/OB
−0.5 to VCCB + 0.5
IIK
−20
mA
II/OK
±50
mA
IOUTA
±50
IOUTB
±50
ICCA
±200
ICCB
±100
Power dissipation
PD
180
mW
Storage temperature
Tstg
−65 to 150
°C
DC bus I/O voltage
Input diode current
Output diode current
DC output current
DC VCC/ground current
V
mA
mA
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: VCCA > VCCB
Don’t use under the condition that VCCB is 0 V.
3
2007-10-17
TC74LVX4245FS
Operating Ranges (Note)
Characteristics
Supply voltage
Input voltage
Bus I/O voltage
Operating temperature
Symbol
Rating
Unit
VCCA
4.5 to 5.5
VCCB
2.7 to 3.6
VIN
0 to VCCA
VI/OA
0 to VCCA
VI/OB
0 to VCCB
Topr
−40 to 85
V
V
V
°C
0 to 8
Input rise and fall time
dt/dv
(VCCA = 4.5 to 5.5 V)
0 to 8
ns/V
(VCCB = 2.7 to 3.6 V)
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.
Electrical Characteristics
DC Characteristics (VCCA = 4.5 to 5.5 V) (VCCB = 2.7 to 3.6 V)
Characteristics
Input voltage
Symbol
Ta = −40 to
85°C
Ta = 25°C
Test Condition
VCCA (V)
Min
Typ.
Max
Min
Max
H-level
VIHA
DIR, G , An
4.5 to 5.5
2.0
⎯
⎯
2.0
⎯
L-level
VILA
DIR, G , An
4.5 to 5.5
⎯
⎯
0.8
⎯
0.8
H-level
VOHA
Output voltage
L-level
3-state output
Off-state current
Input leakage current
VOLA
Unit
V
VINA
= VIHA or VILA
IOH
= −100 μA
4.5
4.4
4.5
⎯
4.4
⎯
VINB
= VIHB or VILB
IOH
= −24 mA
4.5
3.86
⎯
⎯
3.76
⎯
VINA
= VIHA or VILA
IOL
= 100 μA
4.5
⎯
0.0
0.1
⎯
0.1
VINB
= VIHB or VILB
IOL
= 24 mA
4.5
⎯
⎯
0.36
⎯
0.44
5.5
⎯
⎯
±0.5
⎯
±5.0
μA
5.5
⎯
⎯
±0.1
⎯
±1.0
μA
5.5
⎯
⎯
8.0
⎯
80.0
μA
5.5
⎯
⎯
2.3
⎯
2.5
mA
V
VINA = VIHA or VILA
IOZA
VINB = VIHB or VILB
VI/OA = VCCA or GND
IINA
ICCA
Quiescent supply current
ICCTA
VIN (DIR, G )
= VCCA or GND
VINA = VCCA or GND
VINB = VCCB or GND
VINA = 3.4 V (per input)
VCCA or GND (other input)
4
2007-10-17
TC74LVX4245FS
DC Characteristics (VCCB = 2.7 to 3.6 V) (VCCA = 4.5 to 5.5 V)
Characteristics
H-level
Symbol
VIHB
H-level
VILB
VOHB
Min
Typ.
Max
Min
Max
2.7
2.0
⎯
⎯
2.0
⎯
3.6
2.2
⎯
⎯
2.2
⎯
2.7
―
⎯
0.8
―
0.8
3.6
―
⎯
0.8
―
0.8
IOH
= −100 μA
3.0
2.9
3.0
⎯
2.9
⎯
IOH
= −8 mA
2.7
2.26
⎯
⎯
2.20
⎯
IOH
= −12 mA
3.0
2.48
⎯
⎯
2.40
⎯
IOL
= 100 μA
3.0
⎯
0.0
0.1
⎯
0.1
IOL
= 8 mA
2.7
⎯
⎯
0.31
⎯
0.40
IOL
= 12 mA
3.0
⎯
⎯
0.31
⎯
0.40
3.6
⎯
⎯
±0.5
⎯
±5.0
μA
3.6
⎯
⎯
5.0
⎯
50.0
μA
3.6
⎯
⎯
0.35
⎯
0.50
mA
Bn
Bn
VINA
= VIHA or VILA
Output voltage
L-level
3-state output
Off-state current
VOLB
IOZB
ICCB
Quiescent supply current
ICCTB
VINA
= VIHA or VILA
Unit
VCCB (V)
Input voltage
L-level
Ta = −40 to
85°C
Ta = 25°C
Test Condition
VINA = VIHA or VILA
VI/OB = VCCB or GND
VINA = VCCA or GND
VINB = VCCB or GND
VINA = 3.0 V (per input)
VCCB or GND (other input)
5
V
V
2007-10-17
TC74LVX4245FS
AC Characteristics (input: tr = tf = 3 ns, CL = 50 pF, RL = 500 Ω, VCCA = 5.0 ± 0.5 V)
Characteristics
Propagation delay time
(An⇒Bn)
3-state output enable time
( G ⇒Bn)
Symbol
VCC (V)
Min
Typ.
Max
Min
Max
tpLH
2.7
⎯
7.1
9.5
1.0
10.5
tpHL
3.3 ± 0.3
⎯
6.5
8.6
1.0
9.5
2.7
⎯
9.5
12.5
1.0
13.8
3.3 ± 0.3
⎯
8.6
11.4
1.0
12.5
tpLZ
2.7
⎯
5.3
9.1
1.0
10.0
tpHZ
3.3 ± 0.3
⎯
5.3
9.1
1.0
10.0
tpLH
2.7
⎯
7.0
9.5
1.0
10.5
tpHL
3.3 ± 0.3
⎯
6.4
8.6
1.0
9.5
2.7
⎯
8.5
11.6
1.0
12.7
3.3 ± 0.3
⎯
7.7
10.5
1.0
11.5
tpLZ
2.7
⎯
5.1
6.8
1.0
7.5
tpHZ
3.3 ± 0.3
⎯
5.1
6.8
1.0
7.5
2.7
⎯
⎯
1.5
⎯
1.5
3.3 ± 0.3
⎯
⎯
1.5
⎯
1.5
tpZL
tpZH
3-state output disable time
( G ⇒Bn)
Propagation delay time
(Bn⇒An)
3-state output enable time
( G ⇒An)
tpZL
tpZH
3-state output disable time
( G ⇒An)
Input: An
Outpu: Bn
(DIR = “H”)
Input: Bn
Output: An
(DIR = “L”)
tosLH
Output to output skew
Ta = −40 to
85°C
Ta = 25°C
Test Condition
(Note 1)
tosHL
Unit
ns
ns
ns
ns
ns
ns
ns
Input capacitance
CINA
DIR, G
3.3 ± 0.3
⎯
5
10
⎯
10
pF
Bus input capacitance
CI/O
An, Bn
3.3 ± 0.3
⎯
13
⎯
⎯
⎯
pF
A⇒B (DIR = “H”)
3.3 ± 0.3
⎯
17
⎯
⎯
⎯
B⇒A (DIR = “L”)
3.3 ± 0.3
⎯
25
⎯
⎯
⎯
A⇒B (DIR = “H”)
3.3 ± 0.3
⎯
4
⎯
⎯
⎯
B⇒A (DIR = “L”)
3.3 ± 0.3
⎯
4
⎯
⎯
⎯
Power dissipation capacitance
(Note 2)
CPDA
CPDB
pF
Note 1: Parameter guaranteed by design.
(tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn|)
Note 2: CPD 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:
ICC (opr) = CPD・VCC・fIN + ICC/8 (per bit)
6
2007-10-17
TC74LVX4245FS
Noise Characteristics (Ta = 25°C, input: tr = tf = 3 ns, CL = 50 pF, RL = 500 Ω)
Characteristics
Quiet output maximum dynamic
Symbol
VOL (A)
VOLPA
Test Condition
Input: Bn
Output: An
VCCA (V) VCCB (V)
Typ.
Limit
Unit
5.0
3.3
1.0
1.5
V
5.0
3.3
−0.6
−1.2
V
5.0
3.3
0.8
1.2
V
5.0
3.3
−0.5
−0.8
V
Quiet output mimimum dynamic
VOL (A)
VOLVA
Quiet output maximum dynamic
VOL (B)
VOLPB
Quiet output mimimum dynamic
VOL (B)
VOLVB
Minimum high level dynamic input
voltage
VIH (A)
VIHDA
Input: An
5.0
3.3
⎯
2.0
V
Maximum low level dynamic input
voltage
VIL (A)
VILDA
Input: An
5.0
3.3
⎯
0.8
V
Minimum high level dynamic input
voltage
VIH (B)
VIHDB
Input: Bn
5.0
3.3
⎯
2.0
V
Maximum low level dynamic input
voltage
VIL (B)
VILDB
Input: Bn
5.0
3.3
⎯
0.8
V
(DIR = “L”)
Input: An
Output: Bn
(DIR = “H”)
7
2007-10-17
TC74LVX4245FS
Package Dimensions
Weight: 0.14 g (typ.)
8
2007-10-17
TC74LVX4245FS
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
2007-10-17