TC7MBL3244AFT/FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC7MBL3244AFT, TC7MBL3244AFK Octal Low Voltage Bus Switch The TC7MBL3244A provides eight bits of low-voltage, high-speed bus switching in a standard ’244 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 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. All inputs are equipped with protection circuits to guard against static discharge. TC7MBL3244AFT TC7MBL3244AFK Features • Operating voltage: VCC = 2.0 to 3.6 V • High speed: tpd = 0.31 ns (max) @ VCC = 3.0 V • Low ON-resistance: RON = 5 Ω (typ.) @ VCC = 3.0 V • ESD performance: Machine model ≥ ±200 V Human body model ≥ ±2000 V • Power-down protection for inputs ( OE input only) • Package: TSSOP20,VSSOP20 (US20) • Pin compatible with the 74xx244 type Weight: TSSOP20-P-0044-0.65A VSSOP20-P-0030-0.50 : 0.08 g (typ.) : 0.03 g (typ.) Pin Assignment (top view) 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 2008-09-01 TC7MBL3244AFT/FK 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) Characteristic Symbol Rating Unit Power supply range VCC −0.5~4.6 V Control pin input voltage VIN −0.5~4.6 V Switch terminal I/O voltage VS −0.5 to Vcc+0.5 V Clump diode current IIK Control input pin Switch terminal −50 ±50 mA Switch I/O current IS 128 mA Power dissipation PD 180 mW DC VCC/GND current ICC/IGND ±100 mA Storage temperature Tstg −65 to 150 °C Note: Exceeding any of the absolute maximum ratings, even briefly, may 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 Symbol Rating Unit Power supply voltage VCC 2.0 to 3.6 V Control pin input voltage VIN 0 to 3.6 V Switch I/O voltage VS 0 to Vcc V Operating temperature Topr −40 to 85 °C Input rise and fall time dt/dv 0 to 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 2008-09-01 TC7MBL3244AFT/FK Electrical Characteristics DC Characteristics (Ta = −40 to 85°C) Characteristic Symbol Test Condition High-level control input voltage VIH ⎯ Low-level control input voltage VIL ⎯ Control input current IIN Power off leakage current IOFF Off-stage leakage current (switch off) ISZ Switch ON-resistance (Note 2) Quiescent supply current RON ICC Min Typ. Max 2.0 to 3.6 0.7 × VCC ⎯ ⎯ 2.0 to 3.6 ⎯ ⎯ 0.3 × VCC 2.0 to 3.6 ⎯ ⎯ ±1.0 μA 0 ⎯ ⎯ ±1.0 μA 2.0 to 3.6 ⎯ ⎯ ±1.0 μA VCC (V) VIN = 0 to 3.6 V OE = 0 to 3.6 V A, B = 0 to VCC, OE = VCC VIS = 0 V, IIS = 30 mA (Note 1) 3.0 ⎯ 2 7 VIS = 3.0 V, IIS = 30 mA (Note 1) 3.0 ⎯ 3 9 VIS = 2.4 V, IIS = 15 mA (Note 1) 3.0 ⎯ 5 20 VIS = 0 V, IIS = 24 mA (Note 1) 2.3 ⎯ 3 10 VIS = 2.3 V, IIS = 24 mA (Note 1) 2.3 ⎯ 4 15 3.6 ⎯ ⎯ 10 VIN = VCC or GND, IOUT = 0 Unit V Ω μA Note 1: All typical values are at Ta = 25°C. Note 2: Measured by voltage drop between A and B pins at indicated current through the switch. ON-resistance is determined by the lower of the voltages on the two pins (A or B). AC Characteristics (Ta = −40 to 85°C) Characteristic Symbol Test Condition Propagation delay (bus to bus) tpLH tpHL Figure 1, Figure 2 Output enable time tpZL tpZH Figure 1, Figure 3 Output disable time tpLZ tpHZ Figure 1, Figure 3 Min Max 3.3 ± 0.3 ⎯ 0.31 2.5 ± 0.2 ⎯ 0.52 3.3 ± 0.3 ⎯ 6 2.5 ± 0.2 ⎯ 7.5 3.3 ± 0.3 ⎯ 6 2.5 ± 0.2 ⎯ 7.5 VCC (V) (Note) Unit ns ns ns 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 from the source (zero output impedance). Capacitance (Ta = 25°C) Characteristic Symbol Control input capacitance CIN Switch terminal capacitance CI/O Test Condition OE = VCC VCC (V) Typ. Unit (Note) 3.0 3 pF (Note) 3.0 17 pF Note: This parameter is guaranteed by design. 3 2008-09-01 TC7MBL3244AFT/FK 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 2 × VCC tpHZ, tpZH GND Figure 1 AC Waveforms tf 2.5 ns tr 2.5 ns VCC 90% 50% Input (A, B) 10% GND VOH Output (B, A) 50% tpLH VOL tpHL Figure 2 tpLH, tpHL tf 2.5 ns tr 2.5 ns VCC 90% 50% Output Enable ( OE ) 10% tpLZ GND tpZL VOH Output (A, B) Low to Off to Low 50% 10% tpHZ VOL tpZH VOH 90% Output (A, B) High to Off to High 50% VOL Outputs enabled Outputs disabled Outputs enabled Figure 3 tpLZ, tpHZ, tpZL, tpZH 4 2008-09-01 TC7MBL3244AFT/FK Package Dimensions Weight: 0.08g (typ.) 5 2008-09-01 TC7MBL3244AFT/FK Package Dimensions Weight: 0.03 g (typ.) 6 2008-09-01 TC7MBL3244AFT/FK 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. 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