74VCX2245 Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26 Series Resistors in B Outputs
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74VCX2245MTCX (pdf) |
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74VCX2245MTC |
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74VCX2245 Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26 Series Resistors in B Outputs 74VCX2245 Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26 Series Resistors in B Outputs The VCX2245 contains eight non-inverting bidirectional buffers with 3-STATE outputs and is intended for bus oriented applications. The T/R input determines the direction of data flow. The OE input disables both the A and B ports by placing them in a high impedance state. The 74VCX2245 is designed for low voltage 1.4V to 3.6V VCC applications with I/O compatibility up to 3.6V. The VCX2245 is also designed with 26 series resistance in the B Port outputs. This design reduces line noise in applications such as memory address drivers, clock drivers, and bus transceivers transmitters The 74VCX2245 is fabricated with an advanced CMOS technology to achieve high-speed operation while maintaining low CMOS power dissipation. s 1.4V - 3.6V VCC supply operation s 3.6V tolerant inputs and outputs s 26 series resistors in B Port outputs s Power-off high impedance inputs and outputs s Supports Live Insertion and Withdrawal Note 1 s tPD A to B ns max for 3.0V to 3.6V VCC s Static Drive IOH/IOL B outputs : r12 mA 3.0V VCC s Uses patented Quiet noise/EMI reduction circuitry s Latchup performance exceeds JEDEC 78 conditions s ESD performance: Human body model ! 2000V Machine model ! 200V s Leadless DQFN Pb-Free package Note 1 To ensure the high impedance state during power up and power down, OEn should be tied to VCC through a pull up resistor. The minimum value of the resistor is determined by the current sourcing capability of the driver. Ordering Code: Order Number Package Number Package Description 74VCX2245WM M20B 20-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-013, Wide 74VCX2245BQX Note 2 MLP020B Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads DQFN , JEDEC MO-241, x 4.5mm 74VCX2245MTC MTC20 20-Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 4.4mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Pb-Free package per JEDEC J-STD-020B. Note 2 DQFN package available in Tape and Reel only. Logic Symbol Pin Descriptions Quiet is a trademark of Fairchild Semiconductor Corporation. Pin Names OE T/R Output Enable Input Active LOW Transmit/Receive Input Side A Inputs or 3-STATE Outputs Side B Inputs or 3-STATE Outputs 2005 Fairchild Semiconductor Corporation DS500170 74VCX2245 Connection Diagrams Pin Assignments for SOIC and TSSOP Pad Assignments for DQFN Truth Table Inputs Outputs OE T/R L Bus Data to Bus L H Bus Data to Bus H X HIGH Z State on Note 3 H HIGH Voltage Level L LOW Voltage Level X Immaterial Z High Impedance Note 3 Unused bus terminals during HIGH Z State must be held HIGH or LOW. Logic Diagram Top Through View 74VCX2245 Absolute Maximum Ratings Note 4 Supply Voltage VCC DC Input Voltage VI DC Output Voltage VO Outputs 3-STATE Outputs Active Note 5 DC Input Diode Current IIK VI 0V DC Output Diode Current IOK VO 0V VO ! VCC DC Output Source/Sink Current IOH/IOL DC VCC or Ground Current Storage Temperature TSTG to VCC 0.5V mA r50 mA r100 mA to Recommended Operating Conditions Note 6 Power Supply Voltage VCC Operating 1.4V to 3.6V Input Voltage to 3.6V Output Voltage VO Output in Active States Output in 3-STATE 0V to VCC 0V to 3.6V Output Current in IOH/IOL - A Outputs VCC 3.0V to 3.6V VCC 2.3V to 2.7V VCC 1.65V to 2.3V VCC 1.4V to 1.65V |
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