 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| TC74HC245AP/AF,640AP/AF TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74HC245AP,TC74HC245AF,TC74HC640AP,TC74HC640AF Octal Bus Transceiver TC74HC245AP/AF TC74HC640AP/AF 3-State, Non-Inverting 3-State, Inverting TC74HC245AP, TC74HC640AP The TC74HC245A, 640A are high speed CMOS OCTAL BUS TRANSCEIVERs fabricated with silicon gate C2MOS technology. They achieve the high speed operation similar to equivalent LSTTL 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. TC74HC245AF, TC74HC640AF Features (Note 1)(Note 2) * * * * * * * * High speed: tpd = 10 ns (typ.) at VCC = 5 V Low power dissipation: ICC = 4 A (max) at Ta = 25C High noise immunity: VNIH = VNIL = 28% VCC (min) Output drive capability: 15 LSTTL loads Symmetrical output impedance: |IOH| = IOL = 6 mA (min) Balanced propagation delays: tpLH - tpHL Wide operating voltage range: VCC (opr) = 2~6 V Pin and function compatible with 74LS245/640 Note 1: Do not apply a signal to any bus terminal when it is in the output mode. Damage may result. Note 2: All floating (high impedance) bus terminals must have their input levels fixed by means of pull up or pull down resistors. Weight DIP20-P-300-2.54A SOP20-P-300-1.27A : 1.30 g (typ.) : 0.22 g (typ.) 1 2007-10-01 TC74HC245AP/AF,640AP/AF Pin Assignment TC74HC245A TC74HC640A IEC Logic Symbol TC74HC245A TC74HC640A Truth Table Inputs Function Outputs G L L H DIR L H X A Bus Output Input Z B Bus Input Output HC245A A=B B=A Z HC640A A= B B= A Z X: "H" or "L" Z: High impedance 2 2007-10-01 TC74HC245AP/AF,640AP/AF Absolute Maximum Ratings (Note 1) Characteristics Supply voltage range DC input voltage DC output voltage Input diode current Output diode current DC output current DC VCC/ground current Power dissipation Storage temperature Symbol VCC VIN VOUT IIK IOK IOUT ICC PD Tstg Rating -0.5~7 -0.5~VCC + 0.5 -0.5~VCC + 0.5 20 20 35 75 Unit V V V mA mA mA mA mW C 500 (DIP) (Note 2)/180 (SOP) -65~150 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 to 65C. From Ta = 65 to 85C a derating factor of -10 mW/C shall be applied until 300 mW. Operating Ranges (Note) Characteristics Supply voltage Input voltage Output voltage Operating temperature Symbol VCC VIN VOUT Topr Rating 2~6 0~VCC 0~VCC -40~85 Unit V V V C 0~1000 (VCC = 2.0 V) Input rise and fall time tr, tf 0~500 (VCC = 4.5 V) 0~400 (VCC = 6.0 V) ns 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. 3 2007-10-01 TC74HC245AP/AF,640AP/AF Electrical Characteristics DC Characteristics Characteristics Symbol Test Condition VCC (V) 2.0 High-level input voltage VIH Ta = 25C Min 1.50 3.15 4.20 Ta = -40~85C Max Typ. Min 1.50 3.15 4.20 Max Unit 4.5 6.0 2.0 V 0.50 1.35 1.80 0.50 1.35 1.80 Low-level input voltage VIL 4.5 6.0 2.0 V 1.9 4.4 5.9 4.18 5.68 2.0 4.5 6.0 4.31 5.80 0.0 0.0 0.0 0.17 0.18 1.9 4.4 5.9 4.13 5.63 IOH = -20 A High-level output voltage VOH VIN = VIH or VIL IOH = -6 mA IOH = -7.8 mA IOL = 20 A Low-level output voltage VOL VIN = VIH or VIL IOL = 6 mA IOL = 7.8 mA 3-state output off-state current Input leakage current Quiescent supply current IOZ IIN ICC VIN = VIH or VIL VOUT = VCC or GND VIN = VCC or GND VIN = VCC or GND 4.5 6.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 6.0 6.0 6.0 V 0.1 0.1 0.1 0.26 0.26 0.5 0.1 0.1 0.1 0.1 0.33 0.33 5.0 1.0 A A A V 4.0 40.0 4 2007-10-01 TC74HC245AP/AF,640AP/AF AC Characteristics (input: tr = tf = 6 ns) Characteristics Symbol Test Condition CL (pF) VCC (V) 2.0 Ta = 25C Min Ta = -40~85C Max 60 12 10 90 18 15 120 24 20 150 30 26 180 36 31 150 30 26 10 Typ. 52 7 6 33 12 10 48 16 14 48 16 14 63 21 18 37 17 15 5 13 39 37 Min Max 75 15 13 115 23 20 150 30 26 190 38 32 225 45 38 190 38 32 10 Unit Output transition time tTLH tTHL 50 4.5 6.0 2.0 ns 50 Propagation delay time tpLH tpHL 4.5 6.0 2.0 ns 150 4.5 6.0 2.0 50 3-state output enable time tpZL tpZH RL = 1k 150 4.5 6.0 2.0 4.5 6.0 ns 3-state output disable time Input capacitance Bus input capacitance Power dissipation capacitance tpLZ tpHZ CIN COUT CPD 2.0 RL = 1k 50 4.5 6.0 DIR, G An, Bn TC74HC245A ns pF pF pF (Note) TC74HC640A Note: 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) 5 2007-10-01 TC74HC245AP/AF,640AP/AF Package Dimensions Weight: 1.30 g (typ.) 6 2007-10-01 TC74HC245AP/AF,640AP/AF Package Dimensions Weight: 0.22 g (typ.) 7 2007-10-01 TC74HC245AP/AF,640AP/AF 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. 8 2007-10-01 |
Price & Availability of TC74HC245AP07
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |