Hot-selling and scarce SN74AVCBH164245GR 16-BIT DUAL-SUPPLY BUS TRANSCEIVER TSSOP48 spot stock

Product Descriptions

This  16-bit  (dual-octal)  noninverting  bus transceiver  uses two separate  configurable  power-supply  rails. The A-port is designed to track V_CCA. V_CCA accepts any supply voltage from 1.4 V to 3.6 V. The B-port is designed to track  V_CCB.  V_CCB   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  SN74AVCBH164245  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 SN74AVCBH164245 is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by V_CCB. 

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

To ensure the high-impedance state during power up or power down, OE should be tied to V_CCB 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 V_CC input is at GND, both ports are in the high-impedance state.

Product Features

•    Member of the Texas Instruments Widebus ™ Family

•    Dynamic Output Control (DOC™) Circuitry Dynamically Changes Output Impedance, Resulting in Noise Reduction Without Speed Degradation

•    Dynamic Drive Capability Is Equivalent to Standard Outputs With IOH and IOL of ±24 mA at 2.5-V VCC

•    Control Inputs VIH/VIL Levels are Referenced to VCCB Voltage

•    If Either VCC Input Is at GND, Both Ports Are in the High-Impedance State

•    Overvoltage-Tolerant Inputs/Outputs Allow Mixed-Voltage-Mode Data Communications

•    Ioff Supports Partial-Power-Down Mode Operation

•    Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.4-V to 3.6-V Power-Supply Range

•    Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors

•    Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II

•    ESD Protection Exceeds JESD 22

–   2000-V Human-Body Model (A114-A)

–   200-V Machine Model (A115-A)

–   1000-V Charged-Device Model (C101)

Product Specification

Product Photos

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