SN54ACT74, SN74ACT74
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH CLEAR AND PRESET

SCAS520C - AUGUST 1995 - REVISED SEPTEMBER 1996

features

• Inputs Are TTL-Voltage Compatible
• EPIC^TM (Enhanced-Performance Implanted CMOS) 1-m Process
• Package Options Include Plastic Small-Outline (D), Shrink Small-Outline (DB), Thin Shrink Small-Outline (PW), DIP (N) Packages, Ceramic Chip Carrier (FK), DIP (J), and Flat (W) Packages

  EPIC is a trademark of Texas Instruments Incorporated.

description

The 'ACT74 are dual positive-edge-triggered D-type flip-flops.

A low level at the preset () or clear () input sets or resets the outputs, regardless of the levels of the other inputs. When and are inactive (high), data at the data (D) input meeting the setup-time requirements is transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of the clock pulse. Following the hold-time interval, data at D can be changed without affecting the levels at the outputs.

The SN54ACT74 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ACT74 is characterized for operation from -40°C to 85°C.