The SN74LVCH16952A contains two sets of D-type flip-flops for temporary storage of data flowing in either direction. It can be used as two 8-bit transceivers or one 16-bit transceiver. Data on the A or B bus is stored in the registers on the low-to-high transition of the clock (CLKAB or CLKBA) input, provided that the clock-enable (CEAB or CEBA) input is low. Taking the output-enable (OEAB or OEBA) input low accesses the data on either port. To ensure the high-impedance state during power up or power down, OE 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. Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment. Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. The SN74LVCH16952A is characterized for operation from 40C to 85C. 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. EPIC and Widebus are trademarks of Texas Instruments Incorporated. Copyright 1998, Texas Instruments Incorporated