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 μA (max) (Ta = 25°C) • 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 VCCA 1 24 VCCB DIR 2 23 VCCB A1 3 22 G A2 4 21 B1 A3 5 20 B2 A2 A4 6 19 B3 A3 A5 7 18 B4 A6 8 17 B5 DIR 16 9 (2) G3 3 EN 1 (BA) 3 EN 2 (AB) A1 (3) (21) 1 B1 2 A4 A5 A7 (22) B6 A6 A8 10 15 B7 GND 11 14 B8 A7 GND 12 13 GND A8 (4) (20) (5) (19) (6) (18) (7) (17) (8) (16) (9) (15) (10) (14) B2 B3 B4 B5 B6 B7 B8 Truth Table Inputs G DIR L L L H Outputs Function A-Bus B-Bus A=B Output Input H B=A Input Output X Z High impedance X: Don’t care Z : High impedance 2 2007-10-17 TC74LVX4245FS Block Diagram VCCA DIR VCCB Logic level converter G A1 B1 B8 Same as above block A8 Absolute Maximum Ratings (Note 1) Characteristics Supply voltage range (Note 2) DC input voltage Symbol Rating VCCA −0.5 to 7.0 VCCB −0.5 to VCCA + 0.5 VIN −0.5 to VCCA + 0.5 Unit V V VI/OA −0.5 to VCCA + 0.5 VI/OB −0.5 to VCCB + 0.5 IIK −20 mA II/OK ±50 mA IOUTA ±50 IOUTB ±50 ICCA ±200 ICCB ±100 Power dissipation PD 180 mW Storage temperature Tstg −65 to 150 °C DC bus I/O voltage Input diode current Output diode current DC output current DC VCC/ground current V 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: 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 Rating Unit VCCA 4.5 to 5.5 VCCB 2.7 to 3.6 VIN 0 to VCCA VI/OA 0 to VCCA VI/OB 0 to VCCB Topr −40 to 85 V V V °C 0 to 8 Input rise and fall time dt/dv (VCCA = 4.5 to 5.5 V) 0 to 8 ns/V (VCCB = 2.7 to 3.6 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 Input voltage Symbol Ta = −40 to 85°C Ta = 25°C Test Condition VCCA (V) Min Typ. Max Min Max H-level VIHA DIR, G , An 4.5 to 5.5 2.0 ⎯ ⎯ 2.0 ⎯ L-level VILA DIR, G , An 4.5 to 5.5 ⎯ ⎯ 0.8 ⎯ 0.8 H-level VOHA Output voltage L-level 3-state output Off-state current Input leakage current VOLA Unit V VINA = VIHA or VILA IOH = −100 μA 4.5 4.4 4.5 ⎯ 4.4 ⎯ VINB = VIHB or VILB IOH = −24 mA 4.5 3.86 ⎯ ⎯ 3.76 ⎯ VINA = VIHA or VILA IOL = 100 μA 4.5 ⎯ 0.0 0.1 ⎯ 0.1 VINB = VIHB or VILB IOL = 24 mA 4.5 ⎯ ⎯ 0.36 ⎯ 0.44 5.5 ⎯ ⎯ ±0.5 ⎯ ±5.0 μA 5.5 ⎯ ⎯ ±0.1 ⎯ ±1.0 μA 5.5 ⎯ ⎯ 8.0 ⎯ 80.0 μA 5.5 ⎯ ⎯ 2.3 ⎯ 2.5 mA V VINA = VIHA or VILA IOZA VINB = VIHB or VILB VI/OA = VCCA or GND IINA ICCA Quiescent supply current ICCTA 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) 4 2007-10-17 TC74LVX4245FS DC Characteristics (VCCB = 2.7 to 3.6 V) (VCCA = 4.5 to 5.5 V) Characteristics H-level Symbol VIHB H-level VILB VOHB Min Typ. Max Min Max 2.7 2.0 ⎯ ⎯ 2.0 ⎯ 3.6 2.2 ⎯ ⎯ 2.2 ⎯ 2.7 ― ⎯ 0.8 ― 0.8 3.6 ― ⎯ 0.8 ― 0.8 IOH = −100 μA 3.0 2.9 3.0 ⎯ 2.9 ⎯ IOH = −8 mA 2.7 2.26 ⎯ ⎯ 2.20 ⎯ IOH = −12 mA 3.0 2.48 ⎯ ⎯ 2.40 ⎯ IOL = 100 μA 3.0 ⎯ 0.0 0.1 ⎯ 0.1 IOL = 8 mA 2.7 ⎯ ⎯ 0.31 ⎯ 0.40 IOL = 12 mA 3.0 ⎯ ⎯ 0.31 ⎯ 0.40 3.6 ⎯ ⎯ ±0.5 ⎯ ±5.0 μA 3.6 ⎯ ⎯ 5.0 ⎯ 50.0 μA 3.6 ⎯ ⎯ 0.35 ⎯ 0.50 mA Bn Bn VINA = VIHA or VILA Output voltage L-level 3-state output Off-state current VOLB IOZB ICCB Quiescent supply current ICCTB VINA = VIHA or VILA Unit VCCB (V) Input voltage L-level Ta = −40 to 85°C Ta = 25°C Test Condition 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) 5 V V 2007-10-17 TC74LVX4245FS AC Characteristics (input: tr = tf = 3 ns, CL = 50 pF, RL = 500 Ω, VCCA = 5.0 ± 0.5 V) Characteristics Propagation delay time (An⇒Bn) 3-state output enable time ( G ⇒Bn) Symbol VCC (V) Min Typ. Max Min Max tpLH 2.7 ⎯ 7.1 9.5 1.0 10.5 tpHL 3.3 ± 0.3 ⎯ 6.5 8.6 1.0 9.5 2.7 ⎯ 9.5 12.5 1.0 13.8 3.3 ± 0.3 ⎯ 8.6 11.4 1.0 12.5 tpLZ 2.7 ⎯ 5.3 9.1 1.0 10.0 tpHZ 3.3 ± 0.3 ⎯ 5.3 9.1 1.0 10.0 tpLH 2.7 ⎯ 7.0 9.5 1.0 10.5 tpHL 3.3 ± 0.3 ⎯ 6.4 8.6 1.0 9.5 2.7 ⎯ 8.5 11.6 1.0 12.7 3.3 ± 0.3 ⎯ 7.7 10.5 1.0 11.5 tpLZ 2.7 ⎯ 5.1 6.8 1.0 7.5 tpHZ 3.3 ± 0.3 ⎯ 5.1 6.8 1.0 7.5 2.7 ⎯ ⎯ 1.5 ⎯ 1.5 3.3 ± 0.3 ⎯ ⎯ 1.5 ⎯ 1.5 tpZL tpZH 3-state output disable time ( G ⇒Bn) Propagation delay time (Bn⇒An) 3-state output enable time ( G ⇒An) tpZL tpZH 3-state output disable time ( G ⇒An) Input: An Outpu: Bn (DIR = “H”) Input: Bn Output: An (DIR = “L”) tosLH Output to output skew Ta = −40 to 85°C Ta = 25°C Test Condition (Note 1) tosHL Unit ns ns ns ns ns ns ns Input capacitance CINA DIR, G 3.3 ± 0.3 ⎯ 5 10 ⎯ 10 pF Bus input capacitance CI/O An, Bn 3.3 ± 0.3 ⎯ 13 ⎯ ⎯ ⎯ pF A⇒B (DIR = “H”) 3.3 ± 0.3 ⎯ 17 ⎯ ⎯ ⎯ B⇒A (DIR = “L”) 3.3 ± 0.3 ⎯ 25 ⎯ ⎯ ⎯ A⇒B (DIR = “H”) 3.3 ± 0.3 ⎯ 4 ⎯ ⎯ ⎯ B⇒A (DIR = “L”) 3.3 ± 0.3 ⎯ 4 ⎯ ⎯ ⎯ Power dissipation capacitance (Note 2) CPDA CPDB pF 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) = CPD･VCC･fIN + ICC/8 (per bit) 6 2007-10-17 TC74LVX4245FS Noise Characteristics (Ta = 25°C, input: tr = tf = 3 ns, CL = 50 pF, RL = 500 Ω) Characteristics Quiet output maximum dynamic Symbol VOL (A) VOLPA Test Condition Input: Bn Output: An VCCA (V) VCCB (V) Typ. Limit Unit 5.0 3.3 1.0 1.5 V 5.0 3.3 −0.6 −1.2 V 5.0 3.3 0.8 1.2 V 5.0 3.3 −0.5 −0.8 V Quiet output mimimum dynamic VOL (A) VOLVA Quiet output maximum dynamic VOL (B) VOLPB Quiet output mimimum dynamic VOL (B) VOLVB Minimum high level dynamic input voltage VIH (A) VIHDA Input: An 5.0 3.3 ⎯ 2.0 V Maximum low level dynamic input voltage VIL (A) VILDA Input: An 5.0 3.3 ⎯ 0.8 V Minimum high level dynamic input voltage VIH (B) VIHDB Input: Bn 5.0 3.3 ⎯ 2.0 V Maximum low level dynamic input voltage VIL (B) VILDB Input: Bn 5.0 3.3 ⎯ 0.8 V (DIR = “L”) Input: An Output: Bn (DIR = “H”) 7 2007-10-17 TC74LVX4245FS Package Dimensions Weight: 0.14 g (typ.) 8 2007-10-17 TC74LVX4245FS 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. 9 2007-10-17