TC74LCXR164245FT TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LCXR164245FT 16-Bit Dual Supply Bus Transceiver with Series Resistor The TC74LCXR164245FT 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 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 Weight: 0.25 g (typ.) 2.5-V-bus. The 26-Ω series resistor helps reducing output overshoot and undershoot without external resistor. All inputs are equipped with protection circuits against static discharge or transient excess voltage. Features • Bidirectional interface between 5 V and 3.3 V or 2.5 V buses • 26-Ω series resistors on outputs • High-speed: tpd = 6.8 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 output impedance: IOUTB = ±12 mA (min) IOUTA = ±12 mA (min) (VCCB = 4.5V/VCCA = 3.0 V) • Power-down protection is 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 (thin shrink small outline package) Note 1: 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 2004-12-20 TC74LCXR164245FT Pin Assignment (top view) 1DIR 1 IEC Logic Symbol 48 1OE 1OE 1DIR 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 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 3 5 6 8 9 11 12 13 14 16 17 19 20 22 23 1B1 1B2 1B3 1B4 1B5 1B6 1B7 1B8 2B1 2B2 2B3 2B4 2B5 2B6 2B7 2B8 2004-12-20 TC74LCXR164245FT Truth Table Inputs Function 1DIR Bus 1A1-1A8 Bus 1B1-1B8 Outputs 1OE L L Output Input A=B L H Input Output B=A H X Z Inputs Z Function 2DIR Bus 2A1-2A8 Bus 2B1-2B8 Outputs 2OE L L Output Input A=B L H Input Output B=A H X Z Z X: Don’t care Z: High impedance 3 2004-12-20 TC74LCXR164245FT 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 2004-12-20 TC74LCXR164245FT Maximum Ratings Characteristics Power supply voltage (Note 2) Symbol Rating VCCB −0.5 to 7.0 VCCA −0.5 to VCCB + 0.5 VIN −0.5 to 7.0 DC input voltage (DIR, OE ) Unit 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 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 2004-12-20 TC74LCXR164245FT Recommended Operating Range Characteristics Power supply voltage Symbol Rating Unit VCCB 4.5 to 5.5 VCCA 2.3 to 3.6 VIN 0 to 5.5 V Input voltage (DIR, OE ) V 0 to 5.5 VI/OB Bus I/O voltage (Note 6) 0 to VCCB (Note 7) 0 to 5.5 VI/OA Output current V (Note 6) 0 to VCCA (Note 7) IOUTB IOUTA ±12 (Note 8) ±12 (Note 9) ±4 (Note 10) Operating temperature Topr −40 to 85 Input rise and fall time dt/dv 0 to 10 (Note 11) mA °C ns/V Note 6: OFF state Note 7: High or low state Note 8: VCCB = 4.5 to 5.5 V Note 9: VCCA = 3.0 to 3.6 V Note 10: VCCA = 2.3 to 2.7 V Note 11: VINB = 0.8 to 2.0 V, VCCB = 5.0 V VINA = 0.8 to 2.0 V, VCCA = 3.0 V 6 2004-12-20 TC74LCXR164245FT Electrical Characteristics DC Characteristics Characteristics Symbol Test Condition VIHB DIR, OE , Bn VIHA An VILB DIR, OE , Bn VILA An H-level input voltage L-level input voltage IOHB = −100 µA VOHB VINA = VIHA or VILA H-level output voltage VOHA VINB = VIHB or VILB IOHB = −12 mA IOHA = −100 µA IOHA = −12 mA L-level output voltage VOLA IOZB 3-state output OFF state current IOZA Input leakage current Power-off leakage current IIN IOFF ICCB1 ICCB2 Quiescent supply current ICCA 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 3.8 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 0.7 IOLA = 100 µA 5.0 ± 0.5 2.3 to 3.6 0.2 IOLA = 12 mA 5.0 ± 0.5 3.0 0.8 IOLA = 4 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 = − 4 mA VOLB VCCB (V) VCCA (V) IOLB = 12 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 VI/OA = Open, VCCA = Open VOE = VCCB, DIR = GND 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 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 µA 2004-12-20 TC74LCXR164245FT 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 Test Condition CL (pF) VCCB (V) Ta = −40 to 85°C Min Max 50 5.0 ± 0.5 1.0 6.8 50 5.0 ± 0.5 1.0 10.0 50 5.0 ± 0.5 1.0 9.5 50 5.0 ± 0.5 1.0 6.8 50 5.0 ± 0.5 1.0 10.0 50 5.0 ± 0.5 1.0 9.5 50 5.0 ± 0.5 1.0 CL (pF) VCCB (V) Ta = −40 to 85°C Unit Input: Bn 3-state output enable time ( OE → An) 3-state output disable time ( OE → An) tpZL tpZH Output: An ns (DIR = “L”) tpLZ tpHZ Propagation delay time tpLH (An → Bn) tpHL Input: An 3-state output enable time ( OE → Bn) 3-state output disable time ( OE → Bn) Output to output skew tpZL tpZH Output: Bn ns (DIR = “H”) tpLZ tpHZ tosLH (Note 12) ns tosHL Note 12: 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 Test Condition Min Max 30 5.0 ± 0.5 1.0 9.0 30 5.0 ± 0.5 1.0 12.5 30 5.0 ± 0.5 1.0 11.5 50 5.0 ± 0.5 1.0 10.0 50 5.0 ± 0.5 1.0 12.5 50 5.0 ± 0.5 1.0 11.5 30 or 50 5.0 ± 0.5 1.0 Unit Input: Bn 3-state output enable time ( OE → An) 3-state output disable time ( OE → An) tpZL tpZH Output: An ns (DIR = “L”) tpLZ tpHZ Propagation delay time tpLH (An → Bn) tpHL Input: An 3-state output enable time ( OE → Bn) 3-state output disable time ( OE → Bn) Output to output skew tpZL tpZH Output: Bn ns (DIR = “H”) tpLZ tpHZ tosLH (Note 12) ns tosHL Note 12: Parameter guaranteed by design. (tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn|) 8 2004-12-20 TC74LCXR164245FT 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 13) Test Condition 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 pF pF Note 13: 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 2004-12-20 TC74LCXR164245FT Package Dimensions Weight: 0.25 g (typ.) 10 2004-12-20 TC74LCXR164245FT RESTRICTIONS ON PRODUCT USE 000707EBA • 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. 11 2004-12-20