SN74ABT841

The 4ABT841 10-bit latches are designed specifically for driving highly capacitive or relatively low-impedance loads.  4ABT841  are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The ten latches are transparent D-type latches. The device has noninverting data (D) inputs and provides true data at its outputs.

A buffered output-enable (OE) input of  4ABT841  can be used to place the ten outputs in either a normal logic state (high or low levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without need for interface or pullup components.

OE does not affect the internal operations of the  4ABT841  latch. Previously stored data can be retained or new data can be entered while the outputs are in the high-impedance state.

To ensure the high-impedance state of  4ABT841  during power up or power down, OE should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.The SN74ABT841 is available in TI's shrink small-outline package (DB), which provides the same I/O pin count and functionality of standard small-outline packages in less than half the printed-circuit-board area.The SN54ABT841 is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74ABT841 is characterized for operation from 40°C to 85°C.