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SN74AVC24T245 数据表(PDF) 1 Page - Texas Instruments |
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SN74AVC24T245 数据表(HTML) 1 Page - Texas Instruments |
1 / 14 page www.ti.com FEATURES DESCRIPTION/ORDERING INFORMATION SN74AVC24T245 24-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS SCES552C – FEBRUARY 2004 – REVISED AUGUST 2005 • Control Inputs V IH/VIL Levels Are Referenced • I off Supports Partial-Power-Down Mode to V CCA Voltage Operation • V CC Isolation Feature – If Either VCC Input Is at • I/Os Are 4.6-V Tolerant GND, All Outputs Are in the High-Impedance • Latch-Up Performance Exceeds 100 mA Per State JESD 78, Class II • Overvoltage-Tolerant Inputs/Outputs Allow • ESD Protection Exceeds JESD 22 Mixed-Voltage-Mode Data Communications – 8000-V Human-Body Model (A114-A) • Fully Configurable Dual-Rail Design Allows – 200-V Machine Model (A115-A) Each Port to Operate Over Full 1.2-V to 3.6-V – 1000-V Charged-Device Model (C101) Power-Supply Range This 24-bit noninverting bus transceiver uses two separate configurable power-supply rails. The SN74AVC24T245 is optimized to operate with VCCA/VCCB set at 1.4 V to 3.6 V. It is operational with VCCA/VCCB as low as 1.2 V. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes. The SN74AVC24T245 is 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) input can be used to disable the outputs so the buses are effectively isolated. The SN74AVC24T245 is designed so that the control pins (1DIR, 2DIR, 3DIR, 4DIR, 5DIR, 6DIR, 1OE, 2OE, 3OE, 4OE, 5OE, and 6OE) are supplied by VCCA. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The VCC isolation feature ensures that if either VCC input is at GND, then both ports are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to VCCA through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. ORDERING INFORMATION TA PACKAGE(1) ORDERABLE PART NUMBER TOP-SIDE MARKING LFBGA – GRG Tape and reel SN74AVC24T245GRGR –40 °C to 85°C WH245 LFBGA – ZRG (Pb-free) Tape and reel SN74AVC24T245ZRGR (1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2004–2005, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
类似零件编号 - SN74AVC24T245 |
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类似说明 - SN74AVC24T245 |
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