High-Current 3-State Outputs Drive BusLines Directly or Up To 15 LSTTL Loads

Low Power Consumption, 80-μA Max ICC

Wide Operating Voltage Range of 2 V to 6 V

High-Current 3-State Outputs Drive BusLines Directly or Up To 15 LSTTL Loads

Low Power Consumption, 80-μA Max ICC

Typical tpd = 21 ns

±6-mA Output Drive at 5 V

Low Input Current of 1 μA Max

Bus-Structured Pinout

description/ordering information

These octal transparent D-type latches feature 3-state outputs designed specifically for driving highly capacitiveor relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports,bidirectional bus drivers, and working registers.

While the latch-enable (LE) input is high, the Q outputs respond to the data (D) inputs. When LE is low, theoutputs are latched to retain the data that was set up.

A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (highor low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drivethe bus lines significantly.

The high-impedance state and increased drive provide the capability to drive bus lineswithout interface or pullup components.