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74VCX2245 Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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74VCX2245 Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 8 page © 2005 Fairchild Semiconductor Corporation DS500170 www.fairchildsemi.com June 1999 Revised April 2005 74VCX2245 Low Voltage Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs and 26 : Series Resistors in B Outputs General Description The VCX2245 contains eight non-inverting bidirectional buffers with 3-STATE outputs and is intended for bus ori- ented 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 appli- cations 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 main- taining low CMOS power dissipation. Features 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) 4.4 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 Series ¥ 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: 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 Series ¥ is a trademark of Fairchild Semiconductor Corporation. Order Number Package Number Package Description 74VCX2245WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 74VCX2245BQX (Note 2) MLP020B Pb-Free 20-Terminal Depopulated Quad Very-Thin Flat Pack No Leads (DQFN), JEDEC MO-241, 2.5 x 4.5mm 74VCX2245MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Pin Names Description OE Output Enable Input (Active LOW) T/R Transmit/Receive Input A0–A7 Side A Inputs or 3-STATE Outputs B0–B7 Side B Inputs or 3-STATE Outputs |
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