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74LVC245A Dataheets PDF



Part Number 74LVC245A
Manufacturers Diodes
Logo Diodes
Description OCTAL BUS TRANSCEIVER
Datasheet 74LVC245A Datasheet74LVC245A Datasheet (PDF)

NEW PRODUCT 74LVC245A OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS Description The 74LVC245A is an octal transceiver designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) pin can be used to disable the device so the buses effectively are isolated. The device is designed for operation with a power supply range of 1.65.

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NEW PRODUCT 74LVC245A OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS Description The 74LVC245A is an octal transceiver designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) pin can be used to disable the device so the buses effectively are isolated. The device is designed for operation with a power supply range of 1.65V to 3.6V. The inputs are tolerant to 5.5V allowing this device to be used in a mixed voltage environment. The device is fully specified for partial power down applications using IOFF. The IOFF circuitry disables the output preventing damaging current backflow when the device is powered down. Features  Supply Voltage Range from 1.65V to 3.6V  Sinks or Sources 24ma at VCC = 3V  CMOS Low Power Consumption  IOFF Supports Partial Power Down Operation  Inputs or Outputs Accept Up to 5.5V  Inputs Can Be Driven by 3.3V or 5V Allowing for Mixed Voltage Applications  Schmitt Trigger Action at All Inputs  Typical VOLP (Quiet Output Ground Bounce) Less Than 0.8V with VCC = 3.3V and TA = +25°C  Typical VOHV (Quiet Output dynamic VOH) Greater than 2.0V with VCC = 3.3V and TA = +25°C  ESD Protection Tested per JESD 22  Exceeds 200-V Machine Model (A115)  Exceeds 2000-V Human Body Model (A114)  Exceeds 1000-V Charged Device Model (C101)  Latch-Up Exceeds 250mA per JESD 78, Class I  All devices are:  Totally Lead-Free & Fully RoHS compliant (Notes 1 & 2)  Halogen and Antimony Free. “Green” Device (Note 3) Pin Assignments Applications  General Purpose Logic  Bus Driving  Power Down Signal Isolation  Wide array of products such as:  PCs, Notebooks, Netbooks, Ultrabooks  Networking Computer Peripherals, Hard Drives, CD/DVD ROM  TV, DVD, DVR, Set Top Box Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen and Antimony free, "Green" and Lead-Free. 3. Halogen and Antimony free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. 74LVC245A Document number: DS35890 Rev. 1 - 2 1 of 10 www.diodes.com August 2014 © Diodes Incorporated NEW PRODUCT 74LVC245A Ordering Information 74 LVC 245A xxx -13 Logic Device 74 : Logic Prefix 245 : Function Octal Bus Transceiver with 3-state Outputs Package T20 : TSSOP-20 Q20 : QFN-20 Packing -13 : 13” Tape & Reel Part Number 74LVC245AT20-13 74LVC245AQ20-13 Package Code T20 Q20 Package (Note 4 & 5) TSSOP-20 V-QFN4525-20 Package Size 6.4mm X 6.5mm X 1.2mm 0.65 mm lead pitch 2.5mm X 4.5mm X 0.95mm 0.50 mm lead pitch 13” Tape and Reel Quantity Part Number Suffix 2500/Tape & Reel -13 2500/Tape & Reel -13 Notes: 4. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. 5. V-QFN4525-20 is a JEDEC recognized naming convention that specifies the package thickness category as V and the number 4525 describes the package as 4.5mm X 2.5mm. Pin Descriptions Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Pin Name DIR 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 GND 2A1 1Y4 2A2 1Y3 2A3 1Y2 2A4 1Y1 2OE Vcc Description Output Enable 1 Data Input Data Output Data Input Data Output Data Input Data Output Data Input Data Output Ground Data Input Data Output Data Input Data Output Data Input Data Output Data Input Data Output Output Enable 2 Supply Voltage Logic Diagram Function Table INPUTS OE DIR LL LH HX Operation B Data to A Bus A Data to B Bus Bus Isolation 74LVC245A Document number: DS35890 Rev. 1 - 2 2 of 10 www.diodes.com August 2014 © Diodes Incorporated NEW PRODUCT 74LVC245A Absolute Maximum Ratings (Notes 6 & 7) Symbol ESD HBM ESD CDM ESD MM VCC VI IIK IOK IO ICC IGND TJ TSTG PTOT Description Human Body Model ESD Protection Charged Device Model ESD Protection Machine Model ESD Protection Supply Voltage Range Input Voltage Range note 3 Input Clamp Current VI< 0V Output Clamp Current VO< 0V Continuous Output Current -0.5V < VO VCC +0.5V Continuous Current Through VCC Continuous Current Through GND Operating Junction Temperature Storage Temperature Total Power Dissipation Rating 2 1 200 -0.5 to +7.0 -0.5 to +7.0 -20 -50 ±50 100 -100 -40 to +150 -65 to +150 500 Unit kV kV V V V mA mA mA mA mA °C °C mW Notes: 6. Stresses beyond the absolute maximum may result in immediate failure or reduced reliability. These are stress values and device operation should be within recommend values. 7. Forcing the maximum allowed voltage could cause a condition exceeding the maximum current or conversely forcing the maximum current could cause a condition exceeding the maximum voltage. The ratings of both .


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