TOSHIBA TC7MB3244FK_07

TC7MB3244FK
Toshiba CMOS Digital Integrated Circuit
Silicon Monolithic
TC7MB3244FK
Octal Bus Switch
The TC7MB3244FK provides eight bits of high-speed
TTL-compatible bus switching in a standard ’244 device pinout.
The low on resistance of the switch allows connections to be made
with minimal propagation delay.
The device is organized as two 4-bit low-impedance switches
with separate output-enable (OE) inputs. When OE is low, the
switch is on and data can flow from port A to port B, or vice versa.
When OE is high, the switch is open and a high-impedance state
exists between the two ports.
All inputs are equipped with protection circuits against static
discharge.
Weight: 0.03 g (typ.)
Features
•
Pin Assignment (top view)
Operating voltage: VCC = 4.5~5.5 V
•
High speed: tpd = 0.25 ns (max)
•
Low on resistance: RON = 5 Ω (typ.)
•
ESD performance: Machine model ≥ ±200 V
Human body model ≥ ±2000 V
•
Compatible with TTL outputs (control inputs)
•
Package: VSSOP (US20)
•
Pin compatible with the 74xx244 type.
Functionally equivalent to (FST/CBT) 3244.
1
1OE
1
20
VCC
1A1
2
19
2OE
2B4
3
18
1B1
1A2
4
17
2A4
2B3
5
16
1B2
1A3
6
15
2A3
2B2
7
14
1B3
1A4
8
13
2A2
2B1
9
12
1B4
GND 10
11
2A1
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TC7MB3244FK
Truth Table
Inputs
Function
OE
L
A port = B port
H
Disconnect
System Diagram
1A1
1B1
2A1
2B1
1A4
1B4
2A4
2B4
2OE
1OE
Absolute Maximum Ratings (Note)
Characteristics
Symbol
Rating
Unit
Power supply range
VCC
−0.5~7.0
V
DC input voltage
VIN
−0.5~7.0
V
DC switch voltage
VS
−0.5~7.0
V
Input diode current
IIK
−50
mA
Continuous channel circuit
IS
128
mA
Power dissipation
PD
180
mW
ICC/IGND
±100
mA
Tstg
−65~150
°C
DC VCC/ground current
Storage temperature
Note: 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).
Operating Ranges (Note)
Characteristics
Symbol
Rating
Unit
Supply voltage
VCC
4.5~5.5
V
Input voltage
VIN
0~5.5
V
Switch voltage
VS
0~5.5
V
Operating temperature
Topr
−40~85
°C
Input rise and fall time
dt/dv
0~10
ns/V
Note: The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
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Electrical Characteristics
DC Characteristics (Ta = −40~85°C)
Characteristics
Input voltage
Min
Typ.
(Note 1)
Max
4.5~5.5
2.0
⎯
⎯
4.5~5.5
⎯
⎯
0.8
4.5~5.5
⎯
⎯
±1.0
μA
0
⎯
⎯
±1.0
μA
4.5~5.5
⎯
⎯
±1.0
μA
IIS = 64 mA
4.5
⎯
5
7
IIS = 30 mA
4.5
⎯
5
7
VIS = 2.4 V, IIS = 15 mA
4.5
⎯
10
15
VIN = VCC or GND, IOUT = 0
5.5
⎯
⎯
10
μA
VIN = 3.4 V (one input)
5.5
⎯
⎯
2.5
mA
Symbol
Test Condition
“H” level
VIH
⎯
“L” level
VIL
⎯
Input leakage current
IIN
Power off leakage current
Off-STATE leakage current
(switch off)
ON resistance
(Note 2)
IOFF
ISZ
RON
Quiescent supply current
ICC
Increase in ICC per input
ΔICC
VIN = 0~5.5 V
A, B, OE = 0~5.5 V
A, B = 0~5.5 V, OE = VCC
VIS = 0 V
VCC (V)
Unit
V
Ω
Note 1: Typical values are at VCC = 5 V, Ta = 25°C.
Note 2: Measured by the voltage drop between A and B pins at the indicated current through the switch. On
resistance is determined by the lower of the voltages on the two (A or B) pins.
AC Characteristics (Ta = −40~85°C)
Characteristics
Symbol
Propagation delay time
tpLH
(bus to bus)
tpHL
Output enable time
Output disable time
tpZL
tpZH
tpLZ
tpHZ
Test Condition
Min
Max
Unit
4.5
⎯
0.25
ns
Figure 1, Figure 3
4.5
⎯
5.0
ns
Figure 1, Figure 3
4.5
⎯
5.0
ns
Figure 1, Figure 2
VCC (V)
(Note)
Note: This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay
other than the RC delay of the typical On resistance of the switch and the 50 pF load capacitance, when
driven by an ideal voltage the source (zero output impedance).
Capacitive Characteristics (Ta = 25°C)
Characteristics
Symbol
Control pin input capacitance
CIN
Switch terminal capacitance
CI/O
Test Condition
OE = VCC
VCC (V)
Typ.
Unit
(Note)
5.0
3
pF
(Note)
5.0
10
pF
Note: Parameter guaranteed by design.
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TC7MB3244FK
AC Test Circuit
RL
Switch
Open
7.0 V
GND
Measure
RL
CL
Output
CL = 50 pF
RL = 500 Ω
Parameter
Switch
tpLH, tpHL
Open
tpLZ, tpZL
7.0 V
tpHZ, tpZH
Open
Figure 1
AC Waveform
tf 2.5 ns
tr 2.5 ns
3.0 V
90%
1.5 V
Input
(A, B)
10%
GND
VOH
Output
(B, A)
1.5 V
tpLH
VOL
tpHL
Figure 2 tpLH, tpHL
tf 2.5 ns
tr 2.5 ns
3.0 V
90%
1.5 V
Output Enable
( OE )
10%
tpLZ
GND
tpZL
3.5 V
Output (A, B)
Low to Off to Low
1.5 V
tpHZ
VOL +
0.3 V
VOH − 0.3 V
Output (A, B)
High to Off to High
VOL
tpZH
VOH
1.5 V
GND
Outputs
enabled
Outputs
disabled
Outputs
enabled
Figure 3 tpLZ, tpHZ, tpZL, tpZH
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TC7MB3244FK
Package Dimensions
Weight: 0.03 g (typ.)
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TC7MB3244FK
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
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.
• 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
TOSHIBA or the third parties.
• 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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