TOSHIBA TC7MH245FK_07

TC7MH245FK
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC7MH245FK
Octal Bus Transceiver
The TC7MH245FK is an advanced high speed CMOS octal bus
transceiver fabricated with silicon gate C2MOS technology.
It achieves the high speed operation similar to equivalent
bipolar schottky TTL while maintaining the CMOS low power
dissipation.
It is intended for two-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 busses are effectively isolated.
All inputs are equipped with protection circuits against static
discharge.
Weight: 0.03 g (typ.)
Features
•
High speed: tpd = 4.0 ns (typ.) (VCC = 5 V)
•
Low power dissipation: ICC = 4 μA (max) (Ta = 25°C)
•
High noise immunity: VNIH = VNIL = 28% VCC (min)
•
Balanced propagation delays: tpLH ≈ tpHL
•
Wide operating voltage range: VCC (opr) = 2~5.5 V
•
Low noise: VOLP = 1.0 V (max)
•
Pin and function compatible with 74ALS245
Note: Do not apply a signal to any bus terminal when it is in the output mode. Damage may result.
All floating (high impedance) bus terminals must have their input levels fixed by means of pull up or pull down
resistors.
A parasitic diode is formed between the bus and VCC terminals. Therefore bus terminal can not be used to
interface 5 V to 3 V systems directly.
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TC7MH245FK
Pin Assignment (top view)
IEC Logic Symbol
DIR
1
20
VCC
A1
2
19
G
A2
3
18
B1
A3
17
4
G
DIR
A1
5
16
B3
A5
6
15
B4
A6
7
14
B5
A7
8
13
B6
A8
9
12
B7
GND 10
11
B8
G3
3 EN 1 [BA]
3 EN 2 [AB]
(2)
(18)
1
B1
2
B2
A4
(19)
(1)
A2
A3
A4
A5
A6
A7
A8
(3)
(17)
(4)
(16)
(5)
(15)
(6)
(14)
(7)
(13)
(8)
(12)
(9)
(11)
B2
B3
B4
B5
B6
B7
B8
Truth Table
Inputs
G
DIR
L
L
L
H
Function
Outputs
A-Bus
B-Bus
A=B
Output
Input
H
B=A
Input
Output
X
Z
Z
X: Don’t care
Z: High impedance
Absolute Maximum Rating (Note)
Characteristics
Symbol
Rating
Unit
Supply voltage range
VCC
−0.5~7.0
V
DC input voltage (DIR, G )
VIN
−0.5~7.0
V
DC bus I/O voltage
VI/O
−0.5~VCC + 0.5
V
Input diode current (DIR, G )
IIK
−20
mA
Output diode current
IOK
±20
mA
DC output current
IOUT
±25
mA
DC VCC/ground current
ICC
±75
mA
Power dissipation
PD
180
mW
Storage temperature
Tstg
−65~150
°C
Note: Exceeding any of the absolute maximum ratings, even briefly, may 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).
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TC7MH245FK
Operating Ranges (Note)
Characteristics
Symbol
Rating
Unit
Supply voltage
VCC
2.0~5.5
V
Input voltage (DIR, G )
VIN
0~5.5
V
Bus I/O voltage
VI/O
0~VCC
V
Operating temperature
Topr
−40~85
°C
Input rise and fall time
0~100 (VCC = 3.3 ± 0.3 V)
dt/dv
0~20 (VCC = 5 ± 0.5 V)
ns/V
Note: The operating ranges must be maintained 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
Characteristics
High level
Symbol
Test Condition
VIH
⎯
Ta = 25°C
Min
Typ.
Max
Min
Max
2.0
1.50
⎯
⎯
1.50
⎯
3.0~5.5
VCC
× 0.7
⎯
⎯
VCC
× 0.7
⎯
2.0
⎯
⎯
0.50
⎯
0.50
3.0~5.5
⎯
⎯
VCC
× 0.3
⎯
VCC
× 0.3
2.0
1.9
2.0
⎯
1.9
⎯
3.0
2.9
3.0
⎯
2.9
⎯
4.5
4.4
4.5
⎯
4.4
⎯
IOH = −4 mA
3.0
2.58
⎯
⎯
2.48
⎯
IOH = −8 mA
4.5
3.94
⎯
⎯
3.80
⎯
2.0
⎯
0
0.1
⎯
0.1
3.0
⎯
0
0.1
⎯
0.1
4.5
⎯
0
0.1
⎯
0.1
IOL = 4 mA
3.0
⎯
⎯
0.36
⎯
0.44
IOL = 8 mA
4.5
⎯
⎯
0.36
⎯
0.44
5.5
⎯
⎯
±0.25
⎯
±2.50
μA
⎯
VIL
IOH = −50 μA
High level
VOH
VIN = VIH
or VIL
Output
voltage
IOL = 50 μA
Low level
VOL
Unit
VCC (V)
Input voltage
Low level
Ta = −40~85°C
VIN = VIH
or VIL
VIN = VIH or VIL
V
V
3-state output off-state current
IOZ
Input leakage current
IIN
VIN = 5.5 V or GND
0~5.5
⎯
⎯
±0.1
⎯
±1.0
μA
Quiescent supply current
ICC
VIN = VCC or GND
5.5
⎯
⎯
4.0
⎯
40.0
μA
VOUT = VCC or GND
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TC7MH245FK
AC Characteristics (Input: tr = tf = 3 ns)
Characteristics
Symbol
Test Condition
Ta = 25°C
VCC (V) CL (pF)
Min
Typ.
Max
Min
Max
15
⎯
5.8
8.4
1.0
10.0
50
⎯
8.3
11.9
1.0
13.5
15
⎯
4.0
5.5
1.0
6.5
50
⎯
5.5
7.5
1.0
8.5
15
⎯
8.5
13.2
1.0
15.5
50
⎯
11.0
16.7
1.0
19.0
15
⎯
5.8
8.5
1.0
10.0
50
⎯
7.3
10.6
1.0
12.0
3.3 ± 0.3
50
⎯
11.5
15.8
1.0
18.0
5.0 ± 0.5
50
⎯
7.0
9.7
1.0
11.0
3.3 ± 0.3
50
⎯
⎯
1.5
⎯
1.5
5.0 ± 0.5
50
⎯
⎯
1.0
⎯
1.0
3.3 ± 0.3
tpLH
tpHL
Propagation delay time
⎯
5.0 ± 0.5
3.3 ± 0.3
tpZL
tpZH
3-state output enable time
RL = 1 kΩ
5.0 ± 0.5
3-state output disable time
tpLZ
tpHZ
Output to output skew
tosLH
tosHL
RL = 1 kΩ
(Note 1)
Ta = −40~85°C
Unit
ns
ns
ns
ns
Input capacitance
CIN
DIR, G
⎯
4
10
⎯
10
pF
Bus input capacitance
CI/O
An, Bn
⎯
8
⎯
⎯
⎯
pF
Power dissipation
capacitance
CPD
⎯
21
⎯
⎯
⎯
pF
(Note 2)
Note 1: This parameter is 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)
Noise Characteristics (Input: tr = tf = 3 ns)
Characteristics
Symbol
Test Condition
Ta = 25°C
VCC (V)
Typ.
Limit
Unit
Quiet output maximum dynamic VOL
VOLP
CL = 50 pF
5.0
0.7
1.0
V
Quiet output minimum dynamic
VOLV
CL = 50 pF
5.0
−0.7
−1.0
V
Minimum high level dynamic input voltage VIH
VIHD
CL = 50 pF
5.0
⎯
3.5
V
Maximum low level dynamic input voltage VIL
VILD
CL = 50 pF
5.0
⎯
1.5
V
VOL
Input Equivalent Circuit
Bus Terminal Equivalent Circuit
An, Bn
An, Bn
Input
I/O
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TC7MH245FK
Package Dimensions
Weight: 0.03 g (typ.)
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TC7MH245FK
RESTRICTIONS ON PRODUCT USE
20070701-EN GENERAL
• 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
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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.
• The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which
may result from its use. No license is granted by implication or otherwise under any patents or other rights of
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• 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.
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