1 Features
• AEC-Q100 qualified for automotive applications:
– Device temperature grade 1: -40°C to +125°C
– Device HBM ESD classification level 2
– Device CDM ESD classification level C4B
• Available in wettable flank QFN package
• Operating range 2-V to 5.5-V VCC
• Latch-up performance exceeds 250 mA
per JESD 17

2 Applications
• Convert a momentary switch to a toggle switch
• Hold a signal during controller reset
• Divide a clock signal by two

3 Description
The SN74AHC74Q-Q1 dual positive-edge-triggered
device is a D-type flip-flop.
A low level at the preset (PRE) or clear (CLR) inputs
sets or resets the outputs, regardless of the levels
of the other inputs. When PRE and CLR 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 the D input can be
changed without affecting the levels at the outputs.