TC74LVX245F/FT TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LVX245F,TC74LVX245FT Octal Bus Transceiver The TC74LVX245F/ FT is a high-speed CMOS octal bus transceiver fabricated using silicon gate CMOS technology. Designed for use in 3-V systems, it achieves high-speed operation while maintaining the CMOS low power dissipation. These devices are suitable for low-voltage and battery operated systems. It is intended for two-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 busses are effectively isolated. All inputs are equipped with protection circuits against static discharge. TC74LVX245F TC74LVX245FT Features (Note) • High-speed: tpd = 4.7 ns (typ.) (VCC = 3.3 V) • Low power dissipation: ICC = 4 μA (max) (Ta = 25°C) • Input voltage level: VIL = 0.8 V (max) (VCC = 3 V) VIH = 2.0 V (min) (VCC = 3 V) Balanced propagation delays: tpLH ∼ − tpHL • • Low noise: VOLP = 0.8 V (max) • Pin and function compatible with 74HC245 Weight SOP20-P-300-1.27A TSSOP20-P-0044-0.65A : 0.22 g (typ.) : 0.08 g (typ.) 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 levels fixed by means of pull-up or pull-down resistors. A parasitic diode is formed between the bus and VCC terminals. Therefore bus terminal can not be used to interface 5-V to 3-V systems directly. 1 2007-10-17 TC74LVX245F/FT Pin Assignment (top view) IEC Logic Symbol (19) (1) G DIR 1 20 VCC A1 2 19 G A2 3 18 B1 DIR (2) A1 (18) 1 B1 2 4 17 B2 A4 5 16 B3 A5 6 15 B4 A3 A6 7 14 B5 A4 A7 8 13 B6 A8 9 12 B7 A2 A5 A6 11 3 EN 1 (BA) 3 EN 2 (AB) A3 GND 10 G3 B8 A7 A8 (3) (17) (4) (16) (5) (15) (6) (14) (7) (13) (8) (12) (9) (11) B2 B3 B4 B5 B6 B7 B8 Truth Table Inputs Function Outputs G DIR A-Bus B-Bus L L A=B Output Input L H B=A Input Output H X Z High impedance X: Don’t care Z: High impedance Absolute Maximum Ratings (Note) Characteristics Symbol Rating Unit VCC −0.5 to 7.0 V VIN −0.5 to 7.0 V DC bus I/O voltage VI/O −0.5 to VCC + 0.5 V Input diode current IIK −20 mA Output diode current IOK ±20 mA DC output current IOUT ±25 mA DC VCC/ground current ICC ±75 mA Power dissipation PD 180 mW Storage temperature Tstg −65 to 150 °C Supply voltage range DC input voltage (DIR, G ) Note: 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). 2 2007-10-17 TC74LVX245F/FT Operating Ranges (Note) Characteristics Symbol Rating Unit VCC 2.0 to 3.6 V VIN 0 to 5.5 V Bus I/O voltage VI/O 0 to VCC V Operating temperature Topr −40 to 85 °C Input rise and fall time dt/dv 0 to 100 ns/V Supply voltage Input voltage (DIR, G ) Note: The operating ranges must be maintained 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 Characteristics H-level Symbol VIH Test Condition ⎯ Input voltage L-level H-level VIL VOH Output voltage ⎯ IOH = −50 μA VIN = VIH IOH = −50 μA or VIL IOH = −4 mA IOL = 50 μA L-level 3-State output Off-state current VOL IOZ Ta = −40 to 85°C Ta = 25°C VIN = VIH IOL = 50 μA or VIL IOL = 4 mA VIN = VIH or VIL VOUT = VCC or GND Unit VCC (V) Min Typ. Max Min Max 2.0 1.5 ⎯ ⎯ 1.5 ⎯ 3.0 2.0 ⎯ ⎯ 2.0 ⎯ 3.6 2.4 ⎯ ⎯ 2.4 ⎯ 2.0 ⎯ ⎯ 0.5 ⎯ 0.5 3.0 ⎯ ⎯ 0.8 ⎯ 0.8 3.6 ⎯ ⎯ 0.8 ⎯ 0.8 2.0 1.9 2.0 ⎯ 1.9 ⎯ 3.0 2.9 3.0 ⎯ 2.9 ⎯ 3.0 2.58 ⎯ ⎯ 2.48 ⎯ 2.0 ⎯ 0 0.1 ⎯ 0.1 3.0 ⎯ 0 0.1 ⎯ 0.1 3.0 ⎯ ⎯ 0.36 ⎯ 0.44 3.6 ⎯ ⎯ ±0.25 ⎯ ±2.5 μA V V Input leakage current IIN VIN = 5.5 V or GND 3.6 ⎯ ⎯ ±0.1 ⎯ ±1.0 μA Quiescent supply current ICC VIN = VCC or GND 3.6 ⎯ ⎯ 4.0 ⎯ 40.0 μA 3 2007-10-17 TC74LVX245F/FT AC Characteristics (input: tr = tf = 3 ns) Characteristics Symbol VCC (V) tpLH Typ. Max Min Max 15 ⎯ 6.1 10.7 1.0 13.5 50 ⎯ 8.6 14.2 1.0 17.0 15 ⎯ 4.7 6.6 1.0 8.0 50 ⎯ 7.2 10.1 1.0 11.5 15 ⎯ 9.0 16.9 1.0 20.5 50 ⎯ 11.5 20.4 1.0 24.0 15 ⎯ 7.1 11.0 1.0 13.0 50 ⎯ 9.6 14.5 1.0 16.5 2.7 50 ⎯ 11.5 18.0 1.0 21.0 3.3 ± 0.3 50 ⎯ 9.6 12.8 1.0 14.5 2.7 50 ⎯ ⎯ 1.5 ⎯ 1.5 3.3 ± 0.3 50 ⎯ ⎯ 1.5 ⎯ 1.5 (Note 2) ⎯ 4 10 ⎯ 10 pF ⎯ 8 ― ⎯ ⎯ pF ⎯ 21 ― ⎯ ⎯ pF tpHL 3.3 ± 0.3 tpZL 2.7 RL = 1 kΩ 3.3 ± 0.3 tpZH tpLZ Output disable time Output to output skew Min ⎯ Output enable time tpHZ RL = 1 kΩ tosLH (Note 1) tosHL Input capacitance CIN DIR, G Bus input capacitance CI/O An, Bn Power dissipation capacitance CPD Unit CL (pF) 2.7 Propagation delay time Ta = −40 to 85°C Ta = 25°C Test Condition (Note 3) ns ns ns ns Note 1: Parameter guaranteed by design. (tosLH = |tpLHm − tpLHn|, tosHL = |tpHLm − tpHLn|) Note 2: Parameter guaranteed by design. Note 3: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption. Average operating current can be obtained by the equation: ICC (opr) = CPD･VCC･fIN + ICC/8 (per bit) Noise Characteristics (Ta = 25°C, input: tr = tf = 3 ns, CL = 50 pF) Characteristics Typ. Limit Unit 3.3 0.5 0.8 V ⎯ 3.3 −0.5 −0.8 V VIHD ⎯ 3.3 ⎯ 2.0 V VILD ⎯ 3.3 ⎯ 0.8 V Symbol Test Condition Quiet output maximum dynamic VOL VOLP ⎯ Quiet output minimum dynamic VOL VOLV Minimum high level dynamic input voltage VIH Maximum low level dynamic input voltage VIL Input Equivalent Circuit VCC (V) Bus Terminal Equivalent Circuit (An, Bn) INPUT I/O 4 2007-10-17 TC74LVX245F/FT Package Dimensions Weight: 0.22 g (typ.) 5 2007-10-17 TC74LVX245F/FT Package Dimensions Weight: 0.08 g (typ.) 6 2007-10-17 TC74LVX245F/FT 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. 7 2007-10-17