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1 / 8 page © 2005 Fairchild Semiconductor Corporation DS500052 www.fairchildsemi.com August 1998 Revised June 2005 Print form created on June 10, 2005 12:56 pm 74LCXR162245 Low Voltage 16-Bit Bidirectional Transceiver with 5V Tolerant Inputs/Outputs and 26 : Series Resistors in the Outputs General Description The LCXR162245 contains sixteen non-inverting bidirec- tional buffers with 3-STATE outputs and is intended for bus oriented applications. The device is designed for low volt- age (2.5V or 3.3V) VCC applications with capability of inter- facing to a 5V signal environment. The device is byte controlled. Each byte has separate control inputs which could be shorted together for full 16-bit operation. The T/R inputs determine the direction of data flow through the device. The OE inputs disable both the A and B ports by placing them in a high impedance state. In addition, all A and B outputs include equivalent 26 : (nominal) series resistors to reduce overshoot and under- shoot and are designed to sink/source up to 12 mA at VCC 3.0V. The LCXR162245 is fabricated with an advanced CMOS technology to achieve high speed operation while maintain- ing CMOS low power dissipation. Features s 5V tolerant inputs and outputs s 2.3V–3.6V VCC specifications provided s A and B side outputs have equivalent 26 : series resistors s 5.3 ns tPD max (VCC 3.3V), 20 PA ICC max s Power down high impedance inputs and outputs s Supports live insertion/withdrawal (Note 1) s Flow through pinout s Implements patented noise/EMI reduction circuitry s Latch-up performance exceeds 500 mA s ESD performance: Human body model ! 2000V Machine model ! 200V Note 1: To ensure the high-impedance state during power up or down OE should be tied to VCC through a pull-up resistor: the minimum value or 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. Logic Symbol Pin Descriptions Order Number Package Number Package Description 74LCXR162245MEA MS48A 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide [RAIL] 74LCXR162245MEX MS48A 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300" Wide [TAPE and REEL] 74LCXR162245MTD MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide [RAIL] 74LCXR162245MTX MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide [TAPE and REEL] Pin Names Description OEn Output Enable Input T/Rn Transmit/Receive Input A0–A15 Side A Inputs or 3-STATE Outputs B0–B15 Side B Inputs or 3-STATE Outputs |
Số phần tương tự - 74LCXR162245MEA |
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Mô tả tương tự - 74LCXR162245MEA |
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