TC7MBD3244AFK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC7MBD3244AFK Octal Bus Switch The TC7MBD3244AFK 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 device is enable to realize the shift of signal level from 5 V to 3.3 V. All inputs are equipped with protection circuits against static discharge. Features • Weight: 0.03 g (typ.) Pin Assignment (top view) Operating voltage: VCC = 4.5~5.5 V • High speed: tpd = 0.32 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) • Low Power Dissipation: Icc = 10 μA (max.) • Package: VSSOP (US20) • Pin compatible with the 74xx244 type. Functionally equivalent to (FST/CBT) 3244. 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 (top view) 1 2007-10-19 TC7MBD3244AFK 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. 2 2007-10-19 TC7MBD3244AFK Electrical Characteristics DC Characteristics (Ta = −40~85°C) Characteristics Input voltage Symbol Test Condition “H” level VIH ⎯ “L” level VIL ⎯ High-level output voltage (Note 2) Input leakage current VOH IIN Power off leakage current Off-STATE leakage current (switch off) IOFF ISZ IOH=-1μA VIS = VCC VIN = 0~5.5 V A, B, OE = 0~5.5 V A, B = 0~5.5 V, OE = VCC IIS = 64 mA VIS = 0 V ON resistance (Note 3) IIS = 30 mA RON VIS = 2.3 V, IIS = 15 mA Min Typ. (Note 1) Max 4.5~5.5 2.0 ⎯ ⎯ 4.5~5.5 ⎯ ⎯ 0.8 4.75 2.3 2.8 3.2 5.0 2.5 3.0 3.4 5.25 2.7 3.2 3.6 4.5~5.5 ⎯ ⎯ ±1.0 μA 0 ⎯ ⎯ ±1.0 μA 4.5~5.5 ⎯ ⎯ ±1.0 μA 4.5 ⎯ 5 9 4.75 ⎯ 5 8 4.5 ⎯ 5 9 4.75 ⎯ 5 8 4.5 ⎯ 35 65 4.75 ⎯ 35 50 VCC (V) Unit V V Ω Quiescent supply current ICC VIN = VCC or GND,IOUT = 0 5.5 ⎯ ⎯ 10 μA Increase in ICC per input ΔICC VIN = 3.4 V (one input) 5.5 ⎯ ⎯ 2.5 mA Note 1: Typical values are at VCC = 5 V, Ta = 25°C. Note 2: It recommends that this device uses Pull-up resistance when adding and using resistance for an output terminal. Since it couses to drop a VOH voltage level when using Pull-down resistance for an output terminal. Note 3: 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 ⎯ 0.32 ns Figure 1, Figure 3 4.5 ⎯ 7.0 ns Figure 1, Figure 3 4.5 ⎯ 7.0 ns Figure 1, Figure 2 VCC (V) (Note) Note: The propagation delay time is calculated by the RC (on-resistance and load capacitance) time constant. 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: This parameter is guaranteed by design. 3 2007-10-19 TC7MBD3244AFK 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 GND 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 4 2007-10-19 TC7MBD3244AFK VOH – VCC Characteristics (typ.) (mA) Ta = 25°C Ta = 25°C 0 IOH 4.0 3.5 -0.2 1μA 100 μA 3.0 High-level output current High-level output voltage VOH (V) 4.5 6 mA 12 mA 24 mA 2.5 2.0 1.5 4.50 4.75 5.00 5.25 Power supply voltage 5.50 VCC -0.4 -0.6 -1.0 2.0 5.75 VCC=4.5V VCC=4.75V VCC=5.0V VCC=5.25V VCC=5.5V -0.8 2.5 3.0 3.5 High-level output voltage (V) 4.0 5.0 VOH (V) 3.5 Ta = 85°C 0 IOH (V) VOH Ta = 85°C 4.0 -0.2 1μA 100 μA 3.0 High-level output current High-level output voltage (mA) 4.5 6 mA 12 mA 24 mA 2.5 2.0 1.5 4.50 4.75 5.00 5.25 Power supply voltage 5.50 VCC -0.4 -0.6 -0.8 -1.0 2.0 5.75 VCC=4.5V VCC=4.75V VCC=5.0V VCC=5.25V VCC=5.5V (V) 2.5 3.0 3.5 High-level output voltage 4.0 5.0 VOH (V) 3.5 Ta = -40°C 0 IOH (V) VOH Ta = -40°C 4.0 -0.2 High-level output current High-level output voltage (mA) 4.5 1μA 100 μA 3.0 6 mA 12 mA 24 mA 2.5 2.0 1.5 4.50 4.75 5.00 5.25 Power supply voltage 5.50 VCC -0.4 -0.6 -1.0 2.0 5.75 (V) VCC=4.5V VCC=4.75V VCC=5.0V VCC=5.25V VCC=5.5V -0.8 2.5 3.0 3.5 High-level output voltage 4.0 5.0 VOH (V) Figure 4 5 2007-10-19 TC7MBD3244AFK Package Dimensions Weight: 0.03 g (typ.) 6 2007-10-19 TC7MBD3244AFK 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. 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Toshiba assumes no liability for damage or losses occurring as a result of noncompliance with applicable laws and regulations. 7 2007-10-19