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TC7WB126FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC7WB126FK
Dual Bus Switch
The TC7WB126FK is a low on-resistance, high-speed CMOS dual-bit bus switch. This bus switch allows the connections or disconnections to be made with minimal propagation delay while maintaining Low power dissipation which is the feature of CMOS. When output enable (OE) is at High level, the switch is on; when at Low level, the switch is off. All inputs are equipped with protector circuits to protect the device from static discharge.
Features
* * * * * * Operating voltage: VCC = 4.5~5.5 V High speed operation: tpd = 0.25 ns (max) Ultra-low on resistance: RON = 5 (typ.) Electro-static discharge (ESD) performance: 200 V or more (EIAJ) 2000 V or more (MIL) TTL level input (control input) Package: US8
Weight: 0.01 g (typ.)
Pin Assignment (top view)
VCC OE2 8 7 B1 6 A2 5
WB 126
1 2 OE1 A1
3 4 B2 GND
980910EBA1
* TOSHIBA is continually working to improve the quality and the 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 observe standards of safety, and to avoid situations in which a malfunction or failure of a TOSHIBA product 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 products specifications. Also, please keep in mind the precautions and conditions set forth in the TOSHIBA Semiconductor Reliability Handbook. * The products described in this document are subject to the foreign exchange and foreign trade laws. * The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. * The information contained herein is subject to change without notice.
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Truth Table
Inputs OE L H Disconnect A port = B port Function
System Diagram
A1 B1 A2 B2
OE1
OE2
Maximum Ratings
Characteristics Power supply range DC input voltage DC switch voltage Input diode current Continuous channel current Power dissipation DC VCC/GND current Storage temperature Symbol VCC VIN VS IIK IS PD ICC/IGND Tstg Rating -0.5~7.0 -0.5~7.0 -0.5~7.0 -50 128 200 100 -65~150 Unit V V V mA mA mW mA C
Recommended Operating Conditions
Characteristics Supply voltage Input voltage Switch voltage Operating temperature Input rise and fall time Symbol VCC VIN VS Topr dt/dv Rating 4.5~5.5 0~5.5 0~5.5 -40~85 0~10 Unit V V V C ns/V
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Electrical Characteristics DC Characteristics (Ta = -40~85C)
Characteristics "H" level "L" level Input leakage current Off-state leakage current (switch off) ON resistance (Note2) Symbol VIH VIL IIN ISZ VIN = 0~5.5 V A, B = 0~5.5 V, OE = GND IIS = 30 mA IIS = 64 mA Test Condition VCC (V) Input voltage 4.5~5.5 4.5~5.5 5.5 0~5.5 4.5 4.5 4.5 5.5 5.5 2.0 Min Typ. (Note1) 5 5 10 Max 0.8 1.0 1.0 7 7 15 10 2.5 mA mA A A Unit
V
RON
VIS = 0 V
VIS = 2.4 V, IIS = 15 mA ICC ICC VIN = VCC or GND IOUT = 0 VIN = 3.4 V (one input)
Quiescent supply current
Note1: Typical values are at VCC = 5 V and 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 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 Figure 1, Figure 3 4.5 Test Condition VCC (V) Figure 1, Figure 2 (Note3) 4.5 0.25 ns Min Max Unit
4.0
ns
5.5
ns
Note3: The propagation delay time is calculated by the RC (on-resistance and load capacitance) time constant.
Capacitive Characteristics (Ta = 25C)
Characteristics Control pin input capacitance Switch terminal capacitance Symbol CIN CI/O OE = GND Test Condition VCC (V) (Note4) (Note4) 5.0 5.0 3 10 pF pF Typ. Unit
Note4: This item is 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 Input (A, B) 2.5 ns tf 90% 1.5 V 10% 2.5 ns 3.0 V
GND
Output (B, A) tpLH
VOH 1.5 V tpHL VOL
Figure 2
tpLH, tpHL
tr Output Enable (OE)
2.5 ns
tf
2.5 ns 90% 1.5 V 3.0 V
10% tpLZ tpZL
GND
3.5 V Output (A, B) Low to Off to Low tpHZ 1.5 V VOL + 0.3 V VOH - 0.3 V 1.5 V GND Outputs enabled Outputs disabled Outputs enabled tpZH VOL VOH
Output (A, B) High to Off to High
Figure 3
tpLZ, tpHZ, tpZL, tpZH
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TC7WB126FK
Package Dimensions
Weight: 0.01 g (typ.)
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