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TC7MBL3245SFT/FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC7MBL3245SFT, TC7MBL3245SFK
Low Voltage/Low Capacitance Octal Bus Switch
The TC7MBL3245S provides eight bits of low- voltage, high-speed bus switching in a standard '245 device pinout. The low ON-resistance of the switch allows connections to be made with minimal propagation delay and while maintaining CMOS low power dissipation. The device comprises a single 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 to guard against static discharge.
TC7MBL3245SFT
TC7MBL3245SFK
Features
* * * * * * * Operating voltage: VCC = 1.65~3.6 V Low capacitance: CI/O = 12 pF Switch On (typ.) @3 V Low on resistance: RON = 9 (typ.) @3 V ESD performance: Machine model 200 V Human body model 2000 V Power down protection for inputs (OE input only) Package: TSSOP20,VSSOP (US20) Pin compatible with the 74xx245 type 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 OE L H Function A port = B port Disconnect
System Diagram
A1
B1
A8
B8
OE
Absolute Maximum Ratings (Note)
Characteristic Power supply range Control pin input voltage Switch terminal I/O voltage Clump diode current Switch I/O current Power dissipation DC VCC/GND current Storage temperature Control input pin Switch terminal Symbol VCC VIN VS IIK IS PD ICC/IGND Tstg Rating -0.5~4.6 -0.5~4.6 -0.5~VCC + 0.5 -50 50 50 180 100 -65~150 Unit V V V mA 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)
Characteristic Power supply voltage Control pin input voltage Switch I/O voltage Operating temperature Input rise and fall time Symbol VCC VIN VS Topr dt/dv Rating 1.65~3.6 0~3.6 0~VCC -40~85 0~10 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 = -40~85C)
Parameter "H" level Input voltage "L" level Input leakage current Power off leakage current Off-state leakage current (switch off) VIL IIN IOFF ISZ VIN = 0~3.6V OE = 0~3.6 V A, B = 0~VCC , OE = VCC VIS = 0 V, IIS = 30 mA VIS = 3.0 V, IIS = 30 mA On resistance (Note2) RON VIS = 2.4 V, IIS = 15 mA VIS = 0 V, IIS = 24 mA VIS = 2.3 V, IIS = 24 mA VIS = 2.0 V, IIS = 15 mA Increase in ICC per input ICC VIN = VCC or GND, IOUT = 0 (Note1) (Note1) (Note1) (Note1) (Note1) (Note1) 1.65~3.6 1.65~3.6 0 1.65~3.6 3.0 3.0 3.0 2.3 2.3 2.3 3.6 Symbol VIH Test Condition VCC (V) 1.65~3.6 Min 0.7 x VCC Typ. 9 15 19 10 17 21 Max 0.3 x VCC 1.0 1.0 1.0 13 20 27 16 24 30 10 A V Unit
A A A
Note1: All typical values are at Ta=25C. Note2: 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 = -40~85C)
Characteristics Symbol Test Condition VCC (V) 3.3 0.3 Figure 1, Figure 2 2.5 0.2 1.8 0.15 3.3 0.3 Figure 1, Figure 2 2.5 0.2 1.8 0.15 Min Max 6 7 11 6 7 11 ns ns Unit
Output disable time
tpLZ tpHZ
Output disable time
tpLZ tpHZ
Capacitive Characteristics (Ta = 25C)
Characteristics (Note) Control pin input capacitance Switch terminal capacitance Symbol CIN CI/O OE = VCC (switch off) Test Condition VCC (V) 3.0 3.0 3.0 Typ. 3 6 12 Unit pF pF pF
OE = GND (switch on)
Note : This parameter is guaranteed by design
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RON Characteristic (typ.) Ta=25
40 35 30
Vcc = 2.3V Vcc = 3.0V
RON()
25 20 15 10 5 0 0 0.5 1 1.5 2
2.5
3
VIS (V)
AC Test Circuit
Switch RL Open 2 x VCC GND Measure CL = 50 pF RL = 500 CL RL Parameter tpLH, tpHL tpLZ, tpZL tpHZ, tpZH Switch Open 2 x VCC GND
Output
Figure 1 AC Waveform
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 90% 50% VOL Outputs disabled Outputs enabled tf 2.5 ns 90% 50% VCC 10% tpZL VOH 50% 10% tpZH VOL VOH GND
Figure 2 tpLZ, tpHZ, tpZL, tpZH 4 2007-10-19
TC7MBL3245SFT/FK
Rise and Fall Times (tr / tf) of the TC7MBL3245S I/O Signals
The tr(out) and tf(out) values of the output signals are affected by the CR time constant of the input, which consists of the switch terminal capacitance (CI/O) and the on-resistance (RON) of the input. In practice, the tr(out) and tf(out) values are also affected by the circuit's capacitance and resistance components other than those of the TC7MBL3245S.
The tr / tf (out) values can be approximated as follows. (Figure 4 shows the test circuit.) tr / tf out (approx) = - ( CI/O + CL ) (RDRIVE+ RON) ln ( ( ( VOH - VOL ) - VM) / ( VOH - VOL ) ) where, RDRIVE is the output impedance of the previous-stage circuit. Calculation example: tr out (approx) = - ( 12+ 15 )E-12 ( 120 + 9) ln ( ( ( 3.0 - 0 ) - 1.5 ) / ( 3.0 - 0 ) ) 2.4ns Calculation conditions: VCC = 3.0V , CL = 15pF , RDRIVE = 120(output impedance of the previous IC), VM = 1.5V(VCC / 2) Output of the previous IC = digital (i.e., high-level voltage = VCC; low-level voltage = GND)
Previous IC Waveform generated without the TC7MBL3245S RDRIVE Measure VCC CL GND
RDRIVE = output impedance of the previous IC
Previous IC TC7MBL3245S Waveform generated with the TC7MBL3245S added CI/O (Switch On) Measure VM CL VM VOL tr out tf out
RDRIVE
An/Bn
Bn/An
VOH
RON
RDRIVE = output impedance of the previous IC
Parameter VM VCC 3.3 0.3 V VCC / 2 2.5 0.2 V VCC / 2 1.8 0.15 V VCC / 2
=
Figure 3 Test Circuit
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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
* The information contained herein is subject to change without notice.
20070701-EN
* 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.
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