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| TC74LVX4245FS TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LVX4245FS Dual Supply Octal Bus Transceiver The TC74LVX4245FS is a dual supply, advanced high-speed CMOS octal bus transceiver fabricated with silicon gate CMOS technology. Designed for use as an interface between a 5V bus and a 3.3V bus in mixed 5V/3.3V 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 ( G ) can be used to disable the device so that the buses are effectively isolated. The A-port interfaces with the 5V bus, the B-port with the 3.3V bus. All inputs are equipped with protection circuits against static discharge or transient excess voltage. Weight: 0.14 g (typ.) Features * * * * Bi-directional interface between 5 V and 3 V buses High-speed: tpd = 6.0 ns (typ.) (VCCA = 5.0 V, VCCB = 3.3 V) Low power dissipation: ICC = 8 A (max) (Ta = 25C) Symmetrical output impedance: IOUTA = 24 mA (min) IOUTB = 12 mA (min) (VCCA = 4.5 V, VCCB = 3.0 V) * * Low noise: VOLP = 1.5 V (max) Package: SSOP (shrink small outline package) 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 pin must have their input levels fixed by means of pull up or pull down resistors. 1 2007-10-17 TC74LVX4245FS Pin Assignment (top view) IEC Logic Symbol G (22) (2) VCCA DIR A1 A2 A3 A4 A5 A6 A7 1 2 3 4 5 6 7 8 9 24 23 22 21 20 19 18 17 16 15 14 13 VCCB VCCB G3 3 EN 1 (BA) 3 EN 2 (AB) DIR G B1 B2 B3 B4 B5 A1 (3) 1 2 (21) B1 A2 A3 A4 A5 (4) (5) (6) (7) (8) (9) (10) (20) (19) (18) (17) (16) (15) (14) B2 B3 B4 B5 B6 B7 B8 B6 B7 B8 GND A6 A7 A8 A8 10 GND 11 GND 12 Truth Table Inputs G L L H DIR L H X Outputs A=B B=A Z Function A-Bus Output Input B-Bus Input Output High impedance X: Don't care Z : High impedance 2 2007-10-17 TC74LVX4245FS Block Diagram VCCA VCCB DIR G Logic level converter A1 B1 A8 Same as above block B8 Absolute Maximum Ratings (Note 1) Characteristics Supply voltage range (Note 2) DC input voltage DC bus I/O voltage Input diode current Output diode current DC output current Symbol VCCA VCCB VIN VI/OA VI/OB IIK II/OK IOUTA IOUTB ICCA ICCB PD Tstg Rating -0.5 to 7.0 -0.5 to VCCA + 0.5 -0.5 to VCCA + 0.5 -0.5 to VCCA + 0.5 -0.5 to VCCB + 0.5 -20 50 50 50 200 100 180 -65 to 150 Unit V V V mA mA mA DC VCC/ground current Power dissipation Storage temperature mA mW C 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: VCCA > VCCB Don't use under the condition that VCCB is 0 V. 3 2007-10-17 TC74LVX4245FS Operating Ranges (Note) Characteristics Supply voltage Input voltage Bus I/O voltage Operating temperature Symbol VCCA VCCB VIN VI/OA VI/OB Topr Rating 4.5 to 5.5 2.7 to 3.6 0 to VCCA 0 to VCCA 0 to VCCB -40 to 85 Unit V V V C 0 to 8 Input rise and fall time dt/dv (VCCA = 4.5 to 5.5 V) 0 to 8 (VCCB = 2.7 to 3.6 V) ns/V Note: The operating ranges are required to ensure the normal operation of the device. Unused inputs and bus 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. Electrical Characteristics DC Characteristics (VCCA = 4.5 to 5.5 V) (VCCB = 2.7 to 3.6 V) Characteristics Symbol Test Condition VCCA (V) Input voltage H-level L-level VIHA VILA DIR, G , An DIR, G , An VINA = VIHA or VILA VINB = VIHB or VILB VINA = VIHA or VILA VINB = VIHB or VILB IOH = -100 A IOH = -24 mA IOL = 100 A IOL = 24 mA 4.5 to 5.5 4.5 to 5.5 4.5 4.5 4.5 4.5 Min 2.0 Ta = 25C Typ. Ta = -40 to 85C Max Unit Min 2.0 Max 0.8 0.8 V 4.4 3.86 4.5 4.4 3.76 H-level Output voltage L-level VOHA V 0.0 0.1 0.36 0.1 0.44 VOLA 3-state output Off-state current Input leakage current VINA = VIHA or VILA IOZA VINB = VIHB or VILB VI/OA = VCCA or GND IINA ICCA VIN (DIR, G ) = VCCA or GND VINA = VCCA or GND VINB = VCCB or GND VINA = 3.4 V (per input) VCCA or GND (other input) 5.5 5.5 0.1 1.0 A A 5.5 0.5 5.0 A 8.0 80.0 Quiescent supply current ICCTA 5.5 2.3 2.5 mA 4 2007-10-17 TC74LVX4245FS DC Characteristics (VCCB = 2.7 to 3.6 V) (VCCA = 4.5 to 5.5 V) Characteristics Symbol Test Condition VCCB (V) H-level Input voltage L-level VILB Bn IOH = -100 A H-level VOHB VINA = VIHA or VILA IOH = -8 mA IOH = -12 mA IOL = 100 A L-level VOLB VINA = VIHA or VILA IOL = 8 mA IOL = 12 mA 3-state output Off-state current IOZB VINA = VIHA or VILA VI/OB = VCCB or GND VINA = VCCA or GND VINB = VCCB or GND VINA = 3.0 V (per input) VCCB or GND (other input) VIHB Bn 2.7 3.6 2.7 3.6 3.0 2.7 3.0 3.0 2.7 3.0 3.6 Min 2.0 2.2 Ta = 25C Typ. Ta = -40 to 85C Max Unit Min 2.0 2.2 Max 0.8 0.8 0.8 0.8 V 2.9 2.26 2.48 3.0 2.9 2.20 2.40 Output voltage V 0.0 0.1 0.31 0.31 0.5 0.1 0.40 0.40 5.0 A ICCB Quiescent supply current ICCTB 3.6 5.0 50.0 A 3.6 0.35 0.50 mA 5 2007-10-17 TC74LVX4245FS AC Characteristics (input: tr = tf = 3 ns, CL = 50 pF, RL = 500 , VCCA = 5.0 0.5 V) Characteristics Symbol Test Condition VCC (V) Propagation delay time (AnBn) 3-state output enable time ( G Bn) 3-state output disable time ( G Bn) Propagation delay time (BnAn) 3-state output enable time ( G An) 3-state output disable time ( G An) Output to output skew Input capacitance Bus input capacitance tpLH tpHL tpZL tpZH tpLZ tpHZ tpLH tpHL tpZL tpZH tpLZ tpHZ tosLH tosHL CINA CI/O CPDA DIR, G An, Bn AB (DIR = "H") BA (DIR = "L") AB (DIR = "H") BA (DIR = "L") (Note 1) Input: Bn Output: An (DIR = "L") Input: An Outpu: Bn (DIR = "H") 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 3.3 0.3 3.3 0.3 3.3 0.3 3.3 0.3 3.3 0.3 3.3 0.3 Min Ta = 25C Typ. 7.1 6.5 9.5 8.6 5.3 5.3 7.0 6.4 8.5 7.7 5.1 5.1 Ta = -40 to 85C Max 9.5 8.6 12.5 11.4 9.1 9.1 9.5 8.6 11.6 10.5 6.8 6.8 1.5 1.5 10 Unit Min 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Max 10.5 9.5 13.8 12.5 10.0 10.0 10.5 9.5 12.7 11.5 7.5 7.5 1.5 1.5 10 ns ns ns ns ns ns ns pF pF 5 13 17 25 4 4 Power dissipation capacitance (Note 2) pF CPDB Note 1: Parameter guaranteed by design. (tosLH = |tpLHm - tpLHn|, tosHL = |tpHLm - tpHLn|) Note 2: 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) = CPDVCCfIN + ICC/8 (per bit) 6 2007-10-17 TC74LVX4245FS Noise Characteristics (Ta = 25C, input: tr = tf = 3 ns, CL = 50 pF, RL = 500 ) Characteristics Quiet output maximum dynamic Quiet output mimimum dynamic Quiet output maximum dynamic Quiet output mimimum dynamic Minimum high level dynamic input voltage Maximum low level dynamic input voltage Minimum high level dynamic input voltage Maximum low level dynamic input voltage VOL (A) VOL (A) VOL (B) VOL (B) VIH (A) VIL (A) VIH (B) VIL (B) Symbol VOLPA VOLVA VOLPB VOLVB VIHDA VILDA VIHDB VILDB Test Condition Input: Bn Output: An (DIR = "L") Input: An Output: Bn (DIR = "H") Input: An Input: An Input: Bn Input: Bn VCCA (V) VCCB (V) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3 Typ. 1.0 -0.6 Limit 1.5 -1.2 Unit V V V V V V V V 0.8 -0.5 1.2 -0.8 2.0 0.8 2.0 0.8 7 2007-10-17 TC74LVX4245FS Package Dimensions Weight: 0.14 g (typ.) 8 2007-10-17 TC74LVX4245FS RESTRICTIONS ON PRODUCT USE * The information contained herein is subject to change without notice. 20070701-EN * 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. 9 2007-10-17 |
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