TOSHIBA TC74LCX164245FT

TC74LCX164245FT
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74LCX164245FT
16-Bit Dual Supply Bus Transceiver
The TC74LCX164245FT is a dual supply, advanced high-speed
CMOS 16-bit dual supply voltage interface bus transceiver
fabricated with silicon gate CMOS technology.
Designed for use as an interface between a 5-V bus and a 3.3-V
or 2.5-V bus in mixed 5-V/3.3-V or 2.5-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 ( OE ) can be used to disable
Weight: 0.25 g (typ.)
the device so that the buses are effectively isolated. The B-port
interfaces with the 5-V bus, the A-port with the 3.3-V or 2.5-V bus.
All inputs are equipped with protection circuits against static discharge or transient excess voltage.
Features (Note)
•
Bidirectional interface between 5-V and 3.3-V or 2.5-V buses
•
High-speed: tpd = 5.8 ns (max)
(VCCB = 5.0 ± 0.5 V/VCCA = 3.3 ± 0.3 V, Ta = −40 to 85°C)
•
Low power dissipation: ICC = 80 μA (max) (Ta = −40 to 85°C)
•
Symmetrical ouput impedance: IOUTA = ±24 mA (min)
IOUTB = ±24 mA (min)
(VCCA = 3.0 V/VCCB = 4.5 V)
•
Power-down protection provided on all inputs and outputs
•
Allows A port and VCCA to float simultaneously when OE is “H”.
•
Latch-up performance: −500 mA
•
Package: TSSOP
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 fixed by means of pull-up or pull-down resistors.
1
2007-10-19
TC74LCX164245FT
Pin Assignment (top view)
IEC Logic Symbol
1DIR
1
48
1OE
1B1
2
47
1A1
1B2
3
46
1A2
GND
4
45
GND
1B3
5
44
1A3
1B4
6
43
1A4
(5 V) VCCB
7
42
VCCA (3.3 V)
1B5
8
41
1A5
1B6
9
40
1A6
GND 10
39
GND
1B7 11
38
1A7
1B8 12
37
1A8
2B1 13
36
2A1
2B2 14
35
2A2
GND 15
34
GND
2B3 16
33
2A3
2B4 17
32
2A4
(5 V) VCCB 18
31
VCCA (3.3 V)
2B5 19
30
2A5
2B6 20
29
2A6
GND 21
28
GND
2B7 22
27
2A7
2B8 23
26
2A8
2DIR 24
25
2OE
1OE
1DIR
2OE
2DIR
1A1
1A2
1A3
1A4
1A5
1A6
1A7
1A8
2A1
2A2
2A3
2A4
2A5
2A6
2A7
2A8
2
48
1
25
24
47
46
44
43
41
40
38
37
36
35
33
32
30
29
27
26
G3
3 EN1 (BA)
3 EN2 (AB)
G6
6 EN4 (BA)
6 EN5 (AB)
2
1
2
4
5
1B1
3
5
6
8
9
11
12
13
1B2
1B3
1B4
1B5
1B6
1B7
1B8
2B1
14
16
17
19
20
22
23
2B2
2B3
2B4
2B5
2B6
2B7
2B8
2007-10-19
TC74LCX164245FT
Truth Table
Inputs
Function
1OE
1DIR
Bus
1A1-1A8
Bus
1B1-1B8
Outputs
L
L
Output
Input
A=B
L
H
Input
Output
B=A
H
X
Z
Inputs
Z
Function
2OE
2DIR
Bus
2A1-2A8
Bus
2B1-2B8
Outputs
L
L
Output
Input
A=B
L
H
Input
Output
B=A
H
X
Z
Z
X: Don’t care
Z: High impedance
3
2007-10-19
TC74LCX164245FT
Block Diagram
VCCB
1DIR
VCCA
Logic
level
converter
1OE
1B1
1B8
1A1
Same as above block
VCCB
2DIR
2OE
VCCA
Logic
level
converter
2B1
2B8
1A8
2A1
Same as above block
4
2A8
2007-10-19
TC74LCX164245FT
Absolute Maximum Ratings (Note 1)
Characteristics
Power supply voltage
(Note 2)
DC input voltage
(DIR, OE )
Symbol
Rating
Unit
VCCB
−0.5 to 7.0
VCCA
−0.5 to VCCB + 0.5
VIN
−0.5 to 7.0
V
V
−0.5 to 7.0 (Note 3)
VI/OB
−0.5 to VCCB + 0.5
(Note 4)
DC bus I/O voltage
V
−0.5 to 7.0 (Note 3)
VI/OA
−0.5 to VCCA + 0.5
(Note 4)
IIK
−50
II/OK
±50
IOUTB
±50
IOUTA
±50
ICCB
±100
ICCA
±100
Power dissipation
PD
400
mW
Storage temperature
Tstg
−65 to 150
°C
Input diode current
Output diode current
DC output current
DC VCC/ground current per supply pin
mA
(Note 5)
mA
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: VCCB > VCCA
Don’t supply a voltage to VCCA terminal when VCCB is in the off-state.
Note 3: OFF state
Note 4: High or low state. IOUT absolute maximum rating must be observed.
Note 5: VOUT < GND, VOUT > VCC
5
2007-10-19
TC74LCX164245FT
Operating Ranges (Note 1)
Characteristics
Power supply voltage
Input voltage
(DIR, OE )
Symbol
Rating
VCCB
4.5 to 5.5
VCCA
2.3 to 3.6
VIN
0 to 5.5
VI/OB
Bus I/O voltage
VI/OA
Output current
0 to 5.5
Unit
V
V
(Note 2)
0 to VCCB (Note 3)
0 to 5.5
(Note 2)
V
0 to VCCA (Note 3)
IOUTB
IOUTA
±24
(Note 4)
±24
(Note 5)
±8
(Note 6)
Operating temperature
Topr
−40 to 85
Input rise and fall time
dt/dv
0 to 10
mA
°C
(Note 7)
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: OFF state
Note 3: High or low state
Note 4: VCCB = 4.5 to 5.5 V
Note 5: VCCA = 3.0 to 3.6 V
Note 6: VCCA = 2.3 to 2.7 V
Note 7: VINB = 0.8 to 2.0 V, VCCB = 5.0 V
VINA = 0.8 to 2.0 V, VCCA = 3.0 V
6
2007-10-19
TC74LCX164245FT
Electrical Characteristics
DC Characteristics
Characteristics
H-level input voltage
L-level input voltage
Symbol
Test Condition
VIHB
DIR, OE , Bn
VIHA
An
VILB
DIR, OE , Bn
VILA
An
IOHB = −100 μA
VOHB
VINA
= VIHA or VILA
H-level output voltage
VOHA
VINB
= VIHB or VILB
IOHB = −24 mA
IOHA = −100 μA
IOHA = −24 mA
L-level output voltage
VOLA
IOZB
3-state output OFF state current
IOZA
Input leakage current
Power-off leakage current
IIN
IOFF
VINB
= VIHB or VILB
Min
Max
5.0 ± 0.5 2.3 to 3.6
2.0
⎯
5.0 ± 0.5
2.5 ± 0.2
1.7
⎯
5.0 ± 0.5
3.3 ± 0.3
2.0
⎯
5.0 ± 0.5 2.3 to 3.6
⎯
0.8
5.0 ± 0.5
2.5 ± 0.2
⎯
0.7
5.0 ± 0.5
3.3 ± 0.3
⎯
0.8
VCCB
− 0.2
⎯
3.7
⎯
VCCA
− 0.2
⎯
5.0 ± 0.5 2.3 to 3.6
4.5
2.3 to 3.6
5.0 ± 0.5 2.3 to 3.6
5.0 ± 0.5
3.0
2.2
⎯
2.3
1.8
⎯
⎯
0.2
2.3 to 3.6
⎯
0.44
IOLA = 100 μA
5.0 ± 0.5 2.3 to 3.6
⎯
0.2
IOLA = 24 mA
5.0 ± 0.5
3.0
⎯
0.55
IOLA = 8 mA
5.0 ± 0.5
2.3
⎯
0.6
⎯
±5.0
IOLB = 100 μA
VINA
= VIHA or VILA
Ta = −40 to
85°C
5.0 ± 0.5
IOHA = − 8 mA
VOLB
VCCB (V) VCCA (V)
IOLB = 24 mA
VIN = VIHB or VILB
VI/OB = 0 to 5.5 V
VIN = VIHB or VILB
VI/OA = 0 to 5.5 V
VIN (DIR, OE ) = 0 to 5.5 V
VINA/VINB = 5.5 V
5.0 ± 0.5 2.3 to 3.6
4.5
5.0 ± 0.5 2.3 to 3.6
Unit
V
V
V
V
μA
5.0 ± 0.5 2.3 to 3.6
⎯
±5.0
5.5
3.6
⎯
±5.0
μA
0
0
⎯
10
μA
5.5
Open
⎯
80
5.5
3.6
⎯
80
5.5
3.6
⎯
50
5.5
2.3 to 3.6
⎯
2.0
mA
5.0 ± 0.5
3.6
⎯
500
μA
VI/OA = Open, VCCA = Open
ICCB1
VINB = VCCB or GND
OE = VCCB, DIR = GND
Quiescent supply current
ICCB2
ICCA
VINA = VCCA or GND
VINB = VCCB or GND
VINA = VCCA or GND
VINB = VCCB or GND
ICCTB
VINB = 3.4 V per input
ICCTA
VINA = VCCA − 0.6 V per input
7
μA
2007-10-19
TC74LCX164245FT
AC Characteristics (input: tr = tf = 2.5 ns, RL = 500 Ω)
VCCA = 3.3 ± 0.3 V
Characteristics
Symbol
Propagation delay time
tpLH
(Bn → An)
tpHL
3-state output enable time
( OE → An)
3-state output disable time
( OE → An)
tpZL
tpZH
(An → Bn)
tpHL
3-state output disable time
( OE → Bn)
Output to output skew
Note:
tpZL
tpZH
VCCB (V)
Ta = −40 to
85°C
Min
Max
50
5.0 ± 0.5
1.0
5.8
50
5.0 ± 0.5
1.0
9.0
50
5.0 ± 0.5
1.0
9.0
50
5.0 ± 0.5
1.0
5.8
50
5.0 ± 0.5
1.0
8.9
50
5.0 ± 0.5
1.0
9.0
50
5.0 ± 0.5
⎯
1.0
CL (pF)
VCCB (V)
Ta = −40 to
85°C
Unit
Input: Bn
Output: An
ns
(DIR = “L”)
tpHZ
tpLH
( OE → Bn)
CL (pF)
tpLZ
Propagation delay time
3-state output enable time
Test Condition
Input: An
Output: Bn
ns
(DIR = “H”)
tpLZ
tpHZ
tosLH
(Note)
tosHL
ns
Parameter guaranteed by design.
(tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn|)
VCCA = 2.5 ± 0.2 V
Characteristics
Symbol
Propagation delay time
tpLH
(Bn → An)
tpHL
3-state output enable time
( OE → An)
3-state output disable time
( OE → An)
tpZL
tpZH
(An → Bn)
tpHL
( OE → Bn)
3-state output disable time
( OE → Bn)
Output to output skew
Note:
Output: An
tpZL
tpZH
Max
30
5.0 ± 0.5
1.0
8.4
30
5.0 ± 0.5
1.0
11.0
30
5.0 ± 0.5
1.0
10.0
50
5.0 ± 0.5
1.0
9.0
50
5.0 ± 0.5
1.0
10.5
50
5.0 ± 0.5
1.0
10.3
30 or 50
5.0 ± 0.5
⎯
1.0
ns
(DIR = “L”)
tpHZ
tpLH
Min
Unit
Input: Bn
tpLZ
Propagation delay time
3-state output enable time
Test Condition
Input: An
Output: Bn
ns
(DIR = “H”)
tpLZ
tpHZ
tosLH
(Note)
tosHL
ns
Parameter guaranteed by design.
(tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn|)
8
2007-10-19
TC74LCX164245FT
Capacitive Characteristics (Ta = 25°C)
VCCB = 5.0 V
Symbol
Test
Circuit
Input capacitance
CIN
⎯
Output capacitance
CI/O
⎯
CPDA
⎯
CPDB
⎯
Characteristics
Power dissipation capacitance
(Note)
Note:
VCCA (V)
Typ.
Unit
DIR, OE
2.5, 3.3
7
pF
An, Bn
2.5, 3.3
8
pF
A ⇒ B (DIR = “H”)
2.5, 3.3
2
B ⇒ A (DIR = “L”)
2.5, 3.3
26
A ⇒ B (DIR = “H”)
2.5, 3.3
36
B ⇒ A (DIR = “L”)
2.5, 3.3
4
Test Condition
pF
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/16 (per bit)
9
2007-10-19
TC74LCX164245FT
Package Dimensions
Weight: 0.25 g (typ.)
10
2007-10-19
TC74LCX164245FT
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.
11
2007-10-19