1 General description

The HEF40373B is an 8-bit transparent latch with 3-state buffered outputs. The output

stages have high current output capability suitable for driving highly capacitive loads.

The latch outputs follow the data inputs when the latch enable (E) is HIGH. When E is

LOW, the data that meets the set-up times is latched. The 3-state outputs are controlled

by the output enable input EO. A HIGH on EO causes the outputs to assume a high

impedance OFF-state. The device features hysteresis on the E input to improve noise

rejection. Schmitt-trigger action in the E input makes the circuit highly tolerant to slower

input rise and fall times.

2 Features and benefits

• Octal bus interface

• 3-state buffers

• Fully static operation

• 5 V, 10 V, and 15 V parametric ratings

• Standardized symmetrical output characteristics

• Specified from −40 °C to +85 °C