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TC7MB3245FT/FK
Toshiba CMOS Digital Integrated Circuit Silicon Monolithic
TC7MB3245FT, TC7MB3245FK
Octal Bus Switch
The TC7MB3245 provides eight bits of high-speed TTL-compatible bus switching in a standard '245 device pinout. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. The device is organized as one 8-bit switch. When output enable ( OE ) is low, the switch is on and port A is connected to port B. 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.
TC7MB3245FT
TC7MB3245FK
Features
* * * * * * * Operating voltage: VCC = 4.5 to 5.5 V High speed: tpd = 0.25 ns (max) Low on resistance: RON = 5 (typ.) ESD performance: Machine model 200 V Human body model 2000 V Compatible with TTL outputs (control inputs) Package: TSSOP20,VSSOP20 (US20) Pin compatible with the 74xx245 type. Functionally equivalent to (FST/CBT) 3245. Weight TSSOP20-P-0044-0.65A VSSOP20-P-0030-0.50 : 0.08 g (typ.) : 0.03 g (typ.)
Pin Assignment (top view)
NC A1 A2 A3 A4 A5 A6 A7 A8
1 2 3 4 5 6 7 8 9
20 19 18 17 16 15 14 13 12 11
VCC OE B1 B2 B3 B4 B5 B6 B7 B8
GND 10
(top view) NC-No Internal Connection
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Truth Table
Inputs Function A port = B port Disconnect
OE
L H
System Diagram
A1 B1
A8
B8
OE
Absolute Maximum Ratings (Note)
Characteristics Power supply range DC input voltage DC switch voltage Input diode current Continuous channel circuit Power dissipation DC VCC/ground current Storage temperature Symbol VCC VIN VS IIK IS PD ICC/IGND Tstg Rating -0.5 to 7.0 -0.5 to 7.0 -0.5 to 7.0 -50 128 180 100 -65 to 150 Unit V V V mA mA mW mA C
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 Supply voltage Input voltage Switch voltage Operating temperature Input rise and fall time Symbol VCC VIN VS Topr dt/dv Rating 4.5 to 5.5 0 to 5.5 0 to 5.5 -40 to 85 0 to 10 Unit V V V C ns/V
Note: The operating ranges must be maintained to ensure the normal operation of the device.
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Electrical Characteristics DC Characteristics (Ta = -40 to 85C)
Characteristics "H" level Input voltage "L" level Input leakage current Power off leakage current Off-STATE leakage current (switch off) ISZ Symbol VIH VIL IIN IOFF VIN = 0 to 5.5 V A, B, OE = 0 to 5.5 V A, B = 0 to 5.5 V, OE = VCC VIS = 0 V VIS = 2.4 V, IIS = 15 mA Quiescent supply current Increase in ICC per input ICC ICC VIN = VCC or GND, IOUT = 0 VIN = 3.4 V (one input) IIS = 64 mA IIS = 30 mA Test Condition VCC (V) 4.5to5.5 4.5to5.5 4.5to5.5 0 4.5to5.5 4.5 4.5 4.5 5.5 5.5 2.0 Min Typ. (Note 1) 5 5 10 Max V 0.8 1.0 1.0 1.0 7 7 15 10 2.5 A mA A A A Unit
ON resistance
(Note 2)
RON
Note 1: Typical values are at VCC = 5 V, Ta = 25C. 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 to 85C)
Characteristics Propagation delay time (bus to bus) Output enable time Symbol tpLH tpHL tpZL tpZH Output disable time tpLZ tpHZ Figure 1, Figure 3 4.5 5.9 ns Figure 1, Figure 3 4.5 5.9 ns Test Condition VCC (V) Figure 1, Figure 2 (Note) 4.5 0.25 ns Min Max Unit
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 = 25C)
Characteristics Control pin input capacitance Switch terminal capacitance Symbol CIN CI/O OE = VCC Test Condition VCC (V) (Note) (Note) 5.0 5.0 3 10 pF pF Typ. Unit
Note: Parameter guaranteed by design.
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AC Test Circuit
Open 7.0 V GND Measure CL = 50 pF RL = 500 CL RL
Switch RL
Parameter tpLH, tpHL tpLZ, tpZL tpHZ, tpZH
Switch Open 7.0 V Open
Output
Figure 1 AC Waveform
tr 2.5 ns Input (A, B) tf 2.5 ns 90% 1.5 V 10% 3.0 V
GND
Output (B, A) tpLH
VOH 1.5 V tpHL VOL
Figure 2 tpLH, tpHL
tr 2.5 ns Output Enable ( OE ) tpLZ Output (A, B) Low to Off to Low tpHZ Output (A, B) High to Off to High Outputs enabled
tf 2.5 ns 90% 1.5 V 10% tpZL 3.5 V 1.5 V VOL + 0.3 V VOH - 0.3 V 1.5 V GND Outputs disabled Outputs enabled tpZH VOL VOH 3.0 V
GND
Figure 3 tpLZ, tpHZ, tpZL, tpZH
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Package Dimensions
Weight: 0.08g (typ.)
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Package Dimensions
Weight: 0.03g (typ.)
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RESTRICTIONS ON PRODUCT USE
* Toshiba Corporation, and its subsidiaries and affiliates (collectively "TOSHIBA"), reserve the right to make changes to the information in this document, and related hardware, software and systems (collectively "Product") without notice. * This document and any information herein may not be reproduced without prior written permission from TOSHIBA. Even with TOSHIBA's written permission, reproduction is permissible only if reproduction is without alteration/omission. * Though TOSHIBA works continually to improve Product's quality and reliability, Product can malfunction or fail. Customers are responsible for complying with safety standards and for providing adequate designs and safeguards for their hardware, software and systems which minimize risk and avoid situations in which a malfunction or failure of Product could cause loss of human life, bodily injury or damage to property, including data loss or corruption. Before creating and producing designs and using, customers must also refer to and comply with (a) the latest versions of all relevant TOSHIBA information, including without limitation, this document, the specifications, the data sheets and application notes for Product and the precautions and conditions set forth in the "TOSHIBA Semiconductor Reliability Handbook" and (b) the instructions for the application that Product will be used with or for. Customers are solely responsible for all aspects of their own product design or applications, including but not limited to (a) determining the appropriateness of the use of this Product in such design or applications; (b) evaluating and determining the applicability of any information contained in this document, or in charts, diagrams, programs, algorithms, sample application circuits, or any other referenced documents; and (c) validating all operating parameters for such designs and applications. TOSHIBA ASSUMES NO LIABILITY FOR CUSTOMERS' PRODUCT DESIGN OR APPLICATIONS. * Product is intended for use in general electronics applications (e.g., computers, personal equipment, office equipment, measuring equipment, industrial robots and home electronics appliances) or for specific applications as expressly stated in this document. Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious public impact ("Unintended Use"). Unintended Use includes, without limitation, equipment used in nuclear facilities, equipment used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices, elevators and escalators, devices related to electric power, and equipment used in finance-related fields. Do not use Product for Unintended Use unless specifically permitted in this document. * Do not disassemble, analyze, reverse-engineer, alter, modify, translate or copy Product, whether in whole or in part. * Product shall not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable laws or regulations. * The information contained herein is presented only as guidance for Product use. No responsibility is assumed by TOSHIBA for any infringement of patents or any other intellectual property rights of third parties that may result from the use of Product. No license to any intellectual property right is granted by this document, whether express or implied, by estoppel or otherwise. * ABSENT A WRITTEN SIGNED AGREEMENT, EXCEPT AS PROVIDED IN THE RELEVANT TERMS AND CONDITIONS OF SALE FOR PRODUCT, AND TO THE MAXIMUM EXTENT ALLOWABLE BY LAW, TOSHIBA (1) ASSUMES NO LIABILITY WHATSOEVER, INCLUDING WITHOUT LIMITATION, INDIRECT, CONSEQUENTIAL, SPECIAL, OR INCIDENTAL DAMAGES OR LOSS, INCLUDING WITHOUT LIMITATION, LOSS OF PROFITS, LOSS OF OPPORTUNITIES, BUSINESS INTERRUPTION AND LOSS OF DATA, AND (2) DISCLAIMS ANY AND ALL EXPRESS OR IMPLIED WARRANTIES AND CONDITIONS RELATED TO SALE, USE OF PRODUCT, OR INFORMATION, INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, ACCURACY OF INFORMATION, OR NONINFRINGEMENT. * Do not use or otherwise make available Product or related software or technology for any military purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or missile technology products (mass destruction weapons). Product and related software and technology may be controlled under the Japanese Foreign Exchange and Foreign Trade Law and the U.S. Export Administration Regulations. Export and re-export of Product or related software or technology are strictly prohibited except in compliance with all applicable export laws and regulations. * Please contact your TOSHIBA sales representative for details as to environmental matters such as the RoHS compatibility of Product. Please use Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. TOSHIBA assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations.
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