TC74AC245,640P/F/FT TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74AC245P,TC74AC245F,TC74AC245FT TC74AC640P,TC74AC640F,TC74AC640FT Octal Bus Transceiver TC74AC245P/F/FT 3-State, Non-Inverting TC74AC640P/F/FT 3-State, Inverting The TC74AC245, 640 are advanced high speed CMOS OCTAL BUS TRANSCEIVERs fabricated with silicon gate and double-layer metal wiring C2MOS technology. They achieve the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. They are 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 or transient excess voltage. Features (Note 1)(Note 2) • • Low power dissipation: ICC = 8 μA (max) at Ta = 25°C High noise immunity: VNIH = VNIL = 28% VCC (min) • • Symmetrical output impedance: |IOH| = IOL = 24 mA (min) Capability of driving 50 Ω transmission lines. Balanced propagation delays: tpLH ∼ − tpHL • Wide operating voltage range: VCC (opr) = 2 V to 5.5 V • Pin and function compatible with 74F245/640 TC74AC245F, TC74AC640F TC74AC245FT, TC74AC640FT High speed: tpd = 3.9 ns (typ.) at VCC = 5 V • TC74AC245P, TC74AC640P Note 1: Do not apply a signal to any bus terminal when it is in the output mode. Damage may result. Weight DIP20-P-300-2.54A SOP20-P-300-1.27A TSSOP20-P-0044-0.65A : 1.30 g (typ.) : 0.22 g (typ.) : 0.08 g (typ.) Note 2: All floating (high impedance) bus terminals must have their input levels fixed by means of pull up or pull down resistors. 1 2007-10-01 TC74AC245,640P/F/FT Pin Assignment TC74AC245 TC74AC640 DIR 1 20 VCC DIR 1 20 VCC A1 2 19 G A1 2 19 G A2 3 18 B1 A2 3 18 B1 A3 4 17 B2 A3 4 17 B2 A4 5 16 B3 A4 5 16 B3 A5 6 15 B4 A5 6 15 B4 A6 7 14 B5 A6 7 14 B5 A7 8 13 B6 A7 8 13 B6 A8 9 12 B7 A8 9 12 B7 GND 10 11 B8 GND 10 11 B8 (top view) (top view) IEC Logic Symbol TC74AC640 TC74AC245 G DIR A1 (19) (1) (2) G3 G DIR 3 EN 1 [BA] 3 EN 2 [AB] (18) 1 B1 A1 2 A2 A3 A4 A5 A6 A7 A8 (3) (17) (4) (16) (5) (15) (6) (14) (7) (13) (8) (12) (9) (11) B2 A2 B3 A3 B4 A4 B5 A5 B6 A6 B7 A7 B8 A8 2 (19) (1) (2) (3) G3 3 EN 1 [BA] 3 EN 2 [AB] (18) 1 2 (17) (4) (16) (5) (15) (6) (14) (7) (13) (8) (12) (9) (11) B1 B2 B3 B4 B5 B6 B7 B8 2007-10-01 TC74AC245,640P/F/FT Truth Table Inputs Function Outputs G DIR A Bus B Bus AC245 AC640 L L Output Input A=B A= B L H Input Output B=A B= A H X Z Z Z X: Don’t care Z: High impedance Absolute Maximum Ratings (Note 1) Characteristics Symbol Rating Unit Supply voltage range VCC −0.5 to 7.0 V DC input voltage VIN −0.5 to VCC + 0.5 V DC output voltage VOUT −0.5 to VCC + 0.5 V Input diode current IIK ±20 mA Output diode current IOK ±50 mA DC output current IOUT ±50 mA DC VCC/ground current ICC ±200 mA Power dissipation PD 500 (DIP) (Note 2)/180 (SOP/TSSOP) mW Storage temperature Tstg −65 to 150 °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: 500 mW in the range of Ta = −40°C to 65°C. From Ta = 65°C to 85°C a derating factor of −10 mW/°C should be applied up to 300 mW. Operating Ranges (Note) Characteristics Symbol Rating Unit Supply voltage VCC 2.0 to 5.5 V Input voltage VIN 0 to VCC V VOUT 0 to VCC V Operating temperature Topr −40 to 85 °C Input rise and fall time dt/dV Output voltage Note: 0 to 100 (VCC = 3.3 ± 0.3 V) 0 to 20 (VCC = 5 ± 0.5 V) ns/V 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. 3 2007-10-01 TC74AC245,640P/F/FT Electrical Characteristics DC Characteristics Test Condition Characteristics High-level input voltage Low-level input voltage High-level output voltage Symbol VIH VIL VOH ― ― Min Typ. Max Min Max 2.0 1.50 ― ― 1.50 ― 3.0 2.10 ― ― 2.10 ― 5.5 3.85 ― ― 3.85 ― 2.0 ― ― 0.50 ― 0.50 3.0 ― ― 0.90 ― 0.90 5.5 ― ― 1.65 ― 1.65 Unit V V 2.0 1.9 2.0 ― 1.9 ― 3.0 2.9 3.0 ― 2.9 ― VIN = VIH or IOH = −4 mA VIL 4.5 4.4 4.5 ― 4.4 ― 3.0 2.58 ― ― 2.48 ― 4.5 3.94 ― ― 3.80 ― 5.5 ― ― ― 3.85 ― 2.0 ― 0.0 0.1 ― 0.1 IOL = 50 μA 3.0 ― 0.0 0.1 ― 0.1 VIN = VIH or IOL = 12 mA VIL 4.5 ― 0.0 0.1 ― 0.1 3.0 ― ― 0.36 ― 0.44 4.5 ― ― 0.36 ― 0.44 5.5 ― ― ― ― 1.65 5.5 ― ― ±0.5 ― ±5.0 μA IOH = −75 mA VOL VCC (V) IOH = −50 μA IOH = −24 mA Low-level output voltage Ta = −40 to 85°C Ta = 25°C (Note) IOL = 24 mA IOL = 75 mA (Note) VIN = VIH or VIL V V 3-state output off-state current IOZ Input leakage current IIN VIN = VCC or GND 5.5 ― ― ±0.1 ― ±1.0 μA Quiescent supply current ICC VIN = VCC or GND 5.5 ― ― 8.0 ― 80.0 μA Note: VOUT = VCC or GND This spec indicates the capability of driving 50 Ω transmission lines. One output should be tested at a time for a 10 ms maximum duration. 4 2007-10-01 TC74AC245,640P/F/FT AC Characteristics (CL = 50 pF, RL = 500 Ω, input: tr = tf = 3 ns) Characteristics Propagation delay time (Note 2) Propagation delay time (Note 3) Output enable time Output disable time Test Condition Symbol tpLH ― tpHL tpLH ― tpHL tpZL ― tpZH tpLZ ― tpHZ Ta = −40 to 85°C Ta = 25°C VCC (V) Min Typ. Max Min Max 3.3 ± 0.3 ― 7.0 10.9 1.0 12.4 5.0 ± 0.5 ― 5.0 7.5 1.0 8.5 3.3 ± 0.3 ― 6.4 10.0 1.0 11.4 5.0 ± 0.5 ― 4.8 7.0 1.0 8.0 3.3 ± 0.3 ― 9.3 15.3 1.0 17.4 5.0 ± 0.5 ― 7.1 10.5 1.0 12.0 3.3 ± 0.3 ― 7.1 11.4 1.0 13.0 5.0 ± 0.5 ― 5.9 8.7 1.0 10.0 Unit ns ns ns ns Input capacitance CIN DIR, G ― 5 10 ― 10 pF Bus input capacitance CI/O An, Bn ― 13 ― ― ― pF Power dissipation capacitance CPD TC74AC245 ― 38 ― ― ― (Note 1) TC74AC640 ― 36 ― ― ― pF Note 1: 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) Note 2: For TC74AC245 only Note 3: For TC74AC640 only 5 2007-10-01 TC74AC245,640P/F/FT Package Dimensions Weight: 1.30 g (typ.) 6 2007-10-01 TC74AC245,640P/F/FT Package Dimensions Weight: 0.22 g (typ.) 7 2007-10-01 TC74AC245,640P/F/FT Package Dimensions Weight: 0.08 g (typ.) 8 2007-10-01 TC74AC245,640P/F/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. 9 2007-10-01