●The "ABT16543 16-bit registered transceivers contain two sets of D-type latches for temporary storage of data flowing in either direction. The "ABT16543 can be used as two 8-bit transceivers or one 16-bit transceiver. Separate latch-enable ( or) and output-enable ( or ) inputs are provided for each register to permit independent control in either direction of data flow.
●The A-to-B enable () input must be low to enter data from A or to output data from B. If is low and is low, the A-to-B latches are transparent; a subsequent low-to-high transition of puts the A latches in the storage mode. With and both low, the 3-state B outputs are active and reflect the data present at the output of the A latches. Data flow from B to A is similar but requires using the,, and inputs.
●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 SN54ABT16543 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT16543 is characterized for operation from -40°C to 85°C.
● Members of the Texas Instruments WidebusTM Family
● State-of-the-Art EPIC-IIBTM BiCMOS Design Significantly Reduces Power Dissipation
● Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17
● Typical VOLP (Output Ground Bounce) < 1 V at VCC = 5 V, TA = 25°C
● Distributed VCC and GND Pin Configuration Minimizes High-Speed Switching Noise
● Flow-Through Architecture Optimizes PCB Layout
● High-Drive Outputs (-32-mA IOH, 64-mA IOL)
● Package Options Include Plastic 300-mil Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages and 380-mil Fine-Pitch Ceramic Flat (WD) Package Using 25-mil Center-to-Center Spacings
●Widebus and EPIC-IIB are trademarks of Texas Instruments Incorporated.
