描述 Description

The 'ABT16640 are inverting 16-bit transceivers designed for asynchronous communication between data buses.
These devices 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 (1DIR and 2DIR) inputs. The output-enable (1 and 2) inputs 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, 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.
The SN54ABT16640 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT16640 is characterized for operation from -40°C to 85°C.
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特性 Features

? Members of the Texas Instruments WidebusTM Family
? State-of-the-Art EPIC-IIBTM BiCMOS DesignSignificantly Reduces Power Dissipation
? Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17
? Typical VOLP (Output Ground Bounce) CC = 5 V, TA = 25°C
? Distributed VCC and GND Pin Configuration MinimizesHigh-Speed Switching Noise
? Flow-Through Architecture Optimizes PCB Layout
? High-Drive Outputs (-32-mA IOH, 64-mAIOL)
? Package Options Include Plastic 300-mil Shrink Small-Outline(DL) and Thin Shrink Small-Outline (DGG) Packages, and 380-milFine-Pitch Ceramic Flat (WD) Package Using 25-mil Center-to-CenterSpacingsWidebus and EPIC-IIB are trademarks of Texas InstrumentsIncorporated.