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SN74AVCB164245-EP Fiches technique(PDF) 1 Page - Texas Instruments |
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SN74AVCB164245-EP Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 17 page SN74AVCB164245-EP www.ti.com SCES845A – JANUARY 2013 – REVISED FEBRUARY 2013 16-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS Check for Samples: SN74AVCB164245-EP 1 FEATURES 2 • Member of the Texas Instruments Widebus™ • Latch-Up Performance Exceeds 100 mA Per Family JESD 78, Class II • DOC™ Circuitry Dynamically Changes Output • ESD Protection Exceeds JESD 22 Impedance, Resulting in Noise Reduction – 2000-V Human-Body Model (A114-A) Without Speed Degradation – 200-V Machine Model (A115-A) • Dynamic Drive Capability Is Equivalent to – 750-V Charged-Device Model (C101) Standard Outputs With IOH and IOL of ±24 mA at 2.5-V VCC SUPPORTS DEFENSE, AEROSPACE, • Control Inputs VIH and VIL Levels Are AND MEDICAL APPLICATIONS Referenced to VCCB Voltage • Controlled Baseline • If Either VCC Input Is at GND, Both Ports Are in • One Assembly and Test Site the High-Impedance State • One Fabrication Site • Overvoltage-Tolerant Inputs and Outputs • Available in Military (-55°C to 125°C) Allow Mixed-Voltage-Mode Data Temperature Ranges (1) Communications • Extended Product Life Cycle • Ioff Supports Partial-Power-Down Mode • Extended Product-Change Notification Operation • Product Traceability • Fully Configurable Dual-Rail Design Allows Each Port to Operate Over Full 1.4-V to 3.6-V Power-Supply Range (1) Custom temperature ranges available DESCRIPTION This 16-bit (dual-octal) noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.4 V to 3.6 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.4 V to 3.6 V. This allows for universal low-voltage bidirectional translation between any of the 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes. The SN74AVCB164245 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 SN74AVCB164245 is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by VCCB. To ensure the high-impedance state during power up or power down, OE should be tied to VCCB through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. 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. If either VCC input is at GND, both ports are in the high-impedance state. 1 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. 2 Widebus, DOC are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Copyright © 2013, 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. |
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