TC74LCX164245FT TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LCX164245FT 16-Bit Dual Supply Bus Transceiver The TC74LCX164245FT is a dual supply, advanced high-speed CMOS 16-bit dual supply voltage interface bus transceiver fabricated with silicon gate CMOS technology. Designed for use as an interface between a 5-V bus and a 3.3-V or 2.5-V bus in mixed 5-V/3.3-V or 2.5-V supply systems, it achieves high-speed operation while maintaining the CMOS low power dissipation. It is intended for 2 way asynchronous communication between data busses. The direction of data transmission is determined by the level of the DIR input. The enable input ( OE ) can be used to disable Weight: 0.25 g (typ.) the device so that the buses are effectively isolated. The B-port interfaces with the 5-V bus, the A-port with the 3.3-V or 2.5-V bus. All inputs are equipped with protection circuits against static discharge or transient excess voltage. Features (Note) • Bidirectional interface between 5-V and 3.3-V or 2.5-V buses • High-speed: tpd = 5.8 ns (max) (VCCB = 5.0 ± 0.5 V/VCCA = 3.3 ± 0.3 V, Ta = −40 to 85°C) • Low power dissipation: ICC = 80 μA (max) (Ta = −40 to 85°C) • Symmetrical ouput impedance: IOUTA = ±24 mA (min) IOUTB = ±24 mA (min) (VCCA = 3.0 V/VCCB = 4.5 V) • Power-down protection provided on all inputs and outputs • Allows A port and VCCA to float simultaneously when OE is “H”. • Latch-up performance: −500 mA • Package: TSSOP Note: Do not apply a signal to any bus pins when it is in the output mode. Damage may result. All floating (high impedance) bus pins must have their input fixed by means of pull-up or pull-down resistors. 1 2007-10-19 TC74LCX164245FT Pin Assignment (top view) IEC Logic Symbol 1DIR 1 48 1OE 1B1 2 47 1A1 1B2 3 46 1A2 GND 4 45 GND 1B3 5 44 1A3 1B4 6 43 1A4 (5 V) VCCB 7 42 VCCA (3.3 V) 1B5 8 41 1A5 1B6 9 40 1A6 GND 10 39 GND 1B7 11 38 1A7 1B8 12 37 1A8 2B1 13 36 2A1 2B2 14 35 2A2 GND 15 34 GND 2B3 16 33 2A3 2B4 17 32 2A4 (5 V) VCCB 18 31 VCCA (3.3 V) 2B5 19 30 2A5 2B6 20 29 2A6 GND 21 28 GND 2B7 22 27 2A7 2B8 23 26 2A8 2DIR 24 25 2OE 1OE 1DIR 2OE 2DIR 1A1 1A2 1A3 1A4 1A5 1A6 1A7 1A8 2A1 2A2 2A3 2A4 2A5 2A6 2A7 2A8 2 48 1 25 24 47 46 44 43 41 40 38 37 36 35 33 32 30 29 27 26 G3 3 EN1 (BA) 3 EN2 (AB) G6 6 EN4 (BA) 6 EN5 (AB) 2 1 2 4 5 1B1 3 5 6 8 9 11 12 13 1B2 1B3 1B4 1B5 1B6 1B7 1B8 2B1 14 16 17 19 20 22 23 2B2 2B3 2B4 2B5 2B6 2B7 2B8 2007-10-19 TC74LCX164245FT Truth Table Inputs Function 1OE 1DIR Bus 1A1-1A8 Bus 1B1-1B8 Outputs L L Output Input A=B L H Input Output B=A H X Z Inputs Z Function 2OE 2DIR Bus 2A1-2A8 Bus 2B1-2B8 Outputs L L Output Input A=B L H Input Output B=A H X Z Z X: Don’t care Z: High impedance 3 2007-10-19 TC74LCX164245FT Block Diagram VCCB 1DIR VCCA Logic level converter 1OE 1B1 1B8 1A1 Same as above block VCCB 2DIR 2OE VCCA Logic level converter 2B1 2B8 1A8 2A1 Same as above block 4 2A8 2007-10-19 TC74LCX164245FT Absolute Maximum Ratings (Note 1) Characteristics Power supply voltage (Note 2) DC input voltage (DIR, OE ) Symbol Rating Unit VCCB −0.5 to 7.0 VCCA −0.5 to VCCB + 0.5 VIN −0.5 to 7.0 V V −0.5 to 7.0 (Note 3) VI/OB −0.5 to VCCB + 0.5 (Note 4) DC bus I/O voltage V −0.5 to 7.0 (Note 3) VI/OA −0.5 to VCCA + 0.5 (Note 4) IIK −50 II/OK ±50 IOUTB ±50 IOUTA ±50 ICCB ±100 ICCA ±100 Power dissipation PD 400 mW Storage temperature Tstg −65 to 150 °C Input diode current Output diode current DC output current DC VCC/ground current per supply pin mA (Note 5) mA mA mA Note 1: 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). Note 2: VCCB > VCCA Don’t supply a voltage to VCCA terminal when VCCB is in the off-state. Note 3: OFF state Note 4: High or low state. IOUT absolute maximum rating must be observed. Note 5: VOUT < GND, VOUT > VCC 5 2007-10-19 TC74LCX164245FT Operating Ranges (Note 1) Characteristics Power supply voltage Input voltage (DIR, OE ) Symbol Rating VCCB 4.5 to 5.5 VCCA 2.3 to 3.6 VIN 0 to 5.5 VI/OB Bus I/O voltage VI/OA Output current 0 to 5.5 Unit V V (Note 2) 0 to VCCB (Note 3) 0 to 5.5 (Note 2) V 0 to VCCA (Note 3) IOUTB IOUTA ±24 (Note 4) ±24 (Note 5) ±8 (Note 6) Operating temperature Topr −40 to 85 Input rise and fall time dt/dv 0 to 10 mA °C (Note 7) ns/V Note 1: The operating ranges must be maintained to ensure the normal operation of the device. Unused inputs must be tied to either VCC or GND. Please connect both bus inputs and the bus outputs with VCC or GND when the I/O of the bus terminal changes by the function. In this case, please note that the output is not short-circuited. Note 2: OFF state Note 3: High or low state Note 4: VCCB = 4.5 to 5.5 V Note 5: VCCA = 3.0 to 3.6 V Note 6: VCCA = 2.3 to 2.7 V Note 7: VINB = 0.8 to 2.0 V, VCCB = 5.0 V VINA = 0.8 to 2.0 V, VCCA = 3.0 V 6 2007-10-19 TC74LCX164245FT Electrical Characteristics DC Characteristics Characteristics H-level input voltage L-level input voltage Symbol Test Condition VIHB DIR, OE , Bn VIHA An VILB DIR, OE , Bn VILA An IOHB = −100 μA VOHB VINA = VIHA or VILA H-level output voltage VOHA VINB = VIHB or VILB IOHB = −24 mA IOHA = −100 μA IOHA = −24 mA L-level output voltage VOLA IOZB 3-state output OFF state current IOZA Input leakage current Power-off leakage current IIN IOFF VINB = VIHB or VILB Min Max 5.0 ± 0.5 2.3 to 3.6 2.0 ⎯ 5.0 ± 0.5 2.5 ± 0.2 1.7 ⎯ 5.0 ± 0.5 3.3 ± 0.3 2.0 ⎯ 5.0 ± 0.5 2.3 to 3.6 ⎯ 0.8 5.0 ± 0.5 2.5 ± 0.2 ⎯ 0.7 5.0 ± 0.5 3.3 ± 0.3 ⎯ 0.8 VCCB − 0.2 ⎯ 3.7 ⎯ VCCA − 0.2 ⎯ 5.0 ± 0.5 2.3 to 3.6 4.5 2.3 to 3.6 5.0 ± 0.5 2.3 to 3.6 5.0 ± 0.5 3.0 2.2 ⎯ 2.3 1.8 ⎯ ⎯ 0.2 2.3 to 3.6 ⎯ 0.44 IOLA = 100 μA 5.0 ± 0.5 2.3 to 3.6 ⎯ 0.2 IOLA = 24 mA 5.0 ± 0.5 3.0 ⎯ 0.55 IOLA = 8 mA 5.0 ± 0.5 2.3 ⎯ 0.6 ⎯ ±5.0 IOLB = 100 μA VINA = VIHA or VILA Ta = −40 to 85°C 5.0 ± 0.5 IOHA = − 8 mA VOLB VCCB (V) VCCA (V) IOLB = 24 mA VIN = VIHB or VILB VI/OB = 0 to 5.5 V VIN = VIHB or VILB VI/OA = 0 to 5.5 V VIN (DIR, OE ) = 0 to 5.5 V VINA/VINB = 5.5 V 5.0 ± 0.5 2.3 to 3.6 4.5 5.0 ± 0.5 2.3 to 3.6 Unit V V V V μA 5.0 ± 0.5 2.3 to 3.6 ⎯ ±5.0 5.5 3.6 ⎯ ±5.0 μA 0 0 ⎯ 10 μA 5.5 Open ⎯ 80 5.5 3.6 ⎯ 80 5.5 3.6 ⎯ 50 5.5 2.3 to 3.6 ⎯ 2.0 mA 5.0 ± 0.5 3.6 ⎯ 500 μA VI/OA = Open, VCCA = Open ICCB1 VINB = VCCB or GND OE = VCCB, DIR = GND Quiescent supply current ICCB2 ICCA VINA = VCCA or GND VINB = VCCB or GND VINA = VCCA or GND VINB = VCCB or GND ICCTB VINB = 3.4 V per input ICCTA VINA = VCCA − 0.6 V per input 7 μA 2007-10-19 TC74LCX164245FT AC Characteristics (input: tr = tf = 2.5 ns, RL = 500 Ω) VCCA = 3.3 ± 0.3 V Characteristics Symbol Propagation delay time tpLH (Bn → An) tpHL 3-state output enable time ( OE → An) 3-state output disable time ( OE → An) tpZL tpZH (An → Bn) tpHL 3-state output disable time ( OE → Bn) Output to output skew Note: tpZL tpZH VCCB (V) Ta = −40 to 85°C Min Max 50 5.0 ± 0.5 1.0 5.8 50 5.0 ± 0.5 1.0 9.0 50 5.0 ± 0.5 1.0 9.0 50 5.0 ± 0.5 1.0 5.8 50 5.0 ± 0.5 1.0 8.9 50 5.0 ± 0.5 1.0 9.0 50 5.0 ± 0.5 ⎯ 1.0 CL (pF) VCCB (V) Ta = −40 to 85°C Unit Input: Bn Output: An ns (DIR = “L”) tpHZ tpLH ( OE → Bn) CL (pF) tpLZ Propagation delay time 3-state output enable time Test Condition Input: An Output: Bn ns (DIR = “H”) tpLZ tpHZ tosLH (Note) tosHL ns Parameter guaranteed by design. (tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn|) VCCA = 2.5 ± 0.2 V Characteristics Symbol Propagation delay time tpLH (Bn → An) tpHL 3-state output enable time ( OE → An) 3-state output disable time ( OE → An) tpZL tpZH (An → Bn) tpHL ( OE → Bn) 3-state output disable time ( OE → Bn) Output to output skew Note: Output: An tpZL tpZH Max 30 5.0 ± 0.5 1.0 8.4 30 5.0 ± 0.5 1.0 11.0 30 5.0 ± 0.5 1.0 10.0 50 5.0 ± 0.5 1.0 9.0 50 5.0 ± 0.5 1.0 10.5 50 5.0 ± 0.5 1.0 10.3 30 or 50 5.0 ± 0.5 ⎯ 1.0 ns (DIR = “L”) tpHZ tpLH Min Unit Input: Bn tpLZ Propagation delay time 3-state output enable time Test Condition Input: An Output: Bn ns (DIR = “H”) tpLZ tpHZ tosLH (Note) tosHL ns Parameter guaranteed by design. (tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn|) 8 2007-10-19 TC74LCX164245FT Capacitive Characteristics (Ta = 25°C) VCCB = 5.0 V Symbol Test Circuit Input capacitance CIN ⎯ Output capacitance CI/O ⎯ CPDA ⎯ CPDB ⎯ Characteristics Power dissipation capacitance (Note) Note: VCCA (V) Typ. Unit DIR, OE 2.5, 3.3 7 pF An, Bn 2.5, 3.3 8 pF A ⇒ B (DIR = “H”) 2.5, 3.3 2 B ⇒ A (DIR = “L”) 2.5, 3.3 26 A ⇒ B (DIR = “H”) 2.5, 3.3 36 B ⇒ A (DIR = “L”) 2.5, 3.3 4 Test Condition pF CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average operating current can be obtained by the equation: ICC (opr) = CPD･VCC･fIN + ICC/16 (per bit) 9 2007-10-19 TC74LCX164245FT Package Dimensions Weight: 0.25 g (typ.) 10 2007-10-19 TC74LCX164245FT RESTRICTIONS ON PRODUCT USE 20070701-EN • 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. 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. 11 2007-10-19