SN74AVC16245DGGR

A Dynamic Output Control (DOC™) circuit is implemented, which, during the transition, initially lowers the output impedance to effectively drive the load and, subsequently, raises the impedance to reduce noise. This 16-bit (dual octal) noninverting bus transceiver is operational at 1.2-V to 3.6-V VCC, but is designed specifically for 1.65-V to 3.6-V VCC operation. The SN74AVC16245 is designed for asynchronous communication between data buses. The control-function implementation minimizes external timing requirements. This device can be used as two 8-bit transceivers or one 16-bit transceiver. It allows data transmission 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(overline)) input can be used to disable the device so that the buses are effectively isolated. To ensure the high-impedance state during power up or power down, OE(overline) should be tied to VCC 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. The SN74AVC16245 is characterized for operation from -40℃ to 85℃.

Applications

• Asynchronous communication between data buses
• Mixed-voltage data communication

Key features

• Member of the Texas Instruments Widebus™ Family
• EPIC™(Enhanced-Performance Implanted CMOS) Submicron Process
• DOC™(Dynamic Output Control) Circuit Dynamically Changes Output Impedance, Resulting in Noise Reduction Without Speed Degradation
• Less Than 2-ns Maximum Propagation Delay at 2.5-V and 3.3-V VCC
• Dynamic Drive Capability Is Equivalent to Standard Outputs With I0H and I0L of ±24 mA at 2.5 - V VCC
• Overvoltage-Tolerant Inputs/Outputs Allow Mixed-Voltage-Mode Data Communications
• Ioff Supports Partial-Power-Down Mode Operation
• ESD Protection Exceeds JESD 22
• 2000-V Human-Body Model (A114-A)
• 200-V Machine Model (A115-A)
• Latch-Up Performance Exceeds 250 mA Per JESD 78
• Package Options Include Plastic Thin Shrink Small-Outline (DGG) and Thin Very Small-Outline (DGV) Packages