The CDHC374E is a octal D-type flip-flop with 3-state outputs and the capability to drive 15 LSTTL loads. The eight edge-triggered flip-flops enter data into their registers on the LOWto HIGH transition of clock (CP). The
output enable (OE) controls the 3-state outputs and is
independent of the register operation. When OE is HIGH, the outputs are in the high-impedance state. The 374 and 574 are identical in function and differ only in their pinout arrangements.
Common Three-State Output Enable Control
Bus Line Driving Capability
Balanced Propagation Delay and Transition Times
Significant Power Reduction Compared to LSTTL Logic ICs
20 pin DIP. Manufactured by Harris. Actual brand may vary from picture.