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| TC7MBD3244FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC7MBD3244FK Octal Bus Switch The TC7MBD3244FK 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. The internal diode which adds to power supply line is enable to Weight: 0.03 g (typ.) realize the shift of signal level from 5 V to 3.3 V. All inputs are equipped with protection circuits against static discharge. Features * * * * * * * Operating voltage: VCC = 4.5~5.5 V High speed: tpd = 0.25 ns (max) Low on resistance: RON = 5 (typ.) ESD performance: Human body model > 2000 V Machine model > 200 V Compatible with TTL outputs (control inputs) Package: VSSOP (US20) Pin compatible with the 74xx244 type. Functionally equivalent to (FST/CBT) 3244. Pin Assignment (top view) 1OE 1 2 3 4 5 6 7 8 9 20 19 18 17 16 15 14 13 12 11 (top view) VCC 2OE 1A1 2B4 1A2 2B3 1A3 2B2 1A4 2B1 1B1 2A4 1B2 2A3 1B3 2A2 1B4 2A1 GND 10 000630EBA1 * 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 this document shall be made at the customer's own risk. * 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. 2000-07-04 1/6 TC7MBD3244FK Truth Table Inputs OE Function A port = B port Disconnect L H System Diagram 1A1 1B1 2A1 2B1 1A4 1B4 2A4 2B4 1OE 2OE Maximum Ratings 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 -0.5~7.0 -0.5~7.0 -0.5~7.0 -50 128 180 100 -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 2000-07-04 2/6 TC7MBD3244FK Electrical Characteristics DC Characteristics (Ta = -40~85C) Characteristics "H" level "L" level High-level output voltage Input leakage current Off-STATE leakage current (switch off) ON resistance (Note2) Symbol VIH VIL VOH IIN ISZ Figure 4 VIN = 0~5.5 V A, B = 0~5.5 V, OE = VCC VIS = 0 V IIS = 64 mA IIS = 30 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 5.5 2.0 Min Typ. (Note1) 5 5 35 Max 0.8 1.0 1.0 7 7 50 1.5 10 2.5 mA A mA A A Unit V RON VIS = 2.4 V, IIS = 15 mA ICC ICC VIN = VCC or GND IOUT = 0 VIN = 3.4 V (one input) Switch ON Switch OFF Quiescent supply current Increase in ICC per input Note1: Typical values are at VCC = 5 V, 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 6.0 ns 5.0 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 = VCC Test Condition VCC (V) (Note4) (Note4) 5.0 5.0 Typ. 3 10 Unit pF pF Note4: This parameter is guaranteed by design. 2000-07-04 3/6 TC7MBD3244FK 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 90% 1.5 V 2.5 ns 3.0 V 10% GND tpLZ Output (A, B) Low to Off to Low tpHZ Output (A, B) High to Off to High Outputs enabled 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 Figure 3 tpLZ, tpHZ, tpZL, tpZH 2000-07-04 4/6 TC7MBD3244FK VOH - VCC Characteristics (typ.) 4.5 4.5 (V) 4.0 100 A 6 mA 12 mA 24 mA (V) Ta = 85C Ta = 25C 4.0 100 A 3.5 6 mA 12 mA 24 mA High-level output voltage VOH 3.5 3.0 High-level output voltage VOH 5.75 3.0 2.5 2.5 2.0 2.0 1.5 4.50 4.75 5.00 5.25 5.50 1.5 4.50 4.75 5.00 5.25 5.50 5.75 Power supply voltage VCC (V) Power supply voltage VCC (V) 4.5 (V) Ta = 0C 4.0 100 A 3.5 6 mA 12 mA 24 mA High-level output voltage VOH 3.0 2.5 2.0 1.5 4.50 4.75 5.00 5.25 5.50 5.75 Power supply voltage VCC (V) Figure 4 2000-07-04 5/6 TC7MBD3244FK Package Dimensions Weight: 0.03 g (typ.) 2000-07-04 6/6 |
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