74HC74D

The 74HC74 and 74HCT74 are dual positive-edge-triggered D-type flip-flops. They feature independent data (nD), clock (nCP), set (nSD), and reset (nRD) inputs, along with complementary nQ and nQ outputs. Data present at the nD input that meets setup and hold time requirements is stored in the flip-flop and appears at the nQ output on the low-to-high clock transition. The Schmitt-trigger action on the clock input makes the circuit highly tolerant of slower clock rise and fall times. Inputs include clamping diodes, enabling input interfacing to voltages exceeding VCC using current-limiting resistors.

Key features

• Wide supply voltage range: 2.0 V ~ 6.0 V
• High noise immunity
• CMOS low power consumption
• Input levels: CMOS-compatible for 74HC74; TTL-compatible for 74HCT74
• Symmetrical output impedance
• Balanced propagation delay
• Latch-up performance exceeds 250 mA
• JEDEC compliant: JESD8C (2.7 V to 3.6 V) and JESD7A (2.0 V to 6.0 V)
• ESD protection: HBM ANSI/ESDA/JEDEC JS-001 Class 3A exceeds 3500 V; CDM ANSI/ESDA/JEDEC JS-002 Class C3 exceeds 2000 V
• Multiple package options