74HC374; 74HCT374
Octal D-type flip-flop; positive edge-trigger; 3-state
Rev. 3 — 20 February 2018
Product data sheet
1 General description
The 74HC374; 74HCT374 is an octal positive-edge triggered D-type flip-flop with
3‑state outputs. The device features a clock (CP) and output enable (OE) inputs. The
flip‑flops will store the state of their individual D-inputs that meet the set-up and hold
time requirements on the LOW-to-HIGH clock (CP) transition. A HIGH on OE causes
the outputs to assume a high-impedance OFF-state. Operation of the OE input does not
affect the state of the flip-flops. Inputs also include clamp diodes, this enables the use of
current limiting resistors to interface inputs to voltages in excess of VCC.
The 74HCT374 features reduced input threshold levels to allow interfacing to TTL logic
levels.
2 Features and benefits
• Input levels:
– For 74HC374: CMOS level
– For 74HCT374: TTL level
• Octal bus interface
• Non-inverting 3-state outputs
• 8-bit positive, edge-triggered register
• Common 3-state output enable input
• Independent register and 3-state buffer operation
• Complies with JEDEC standard no. 7 A
• ESD protection:
– HBM JESD22-A114F exceeds 2000 V
– MM JESD22-A115-A exceeds 200 V
• Specified from -40 °C to +85 °C and -40 °C to +125 °C
