The 74LV574 is a low-voltage Si-gate CMOS device and is pin and function compatible with 74HC/HCT574. The 74LV574 is an octal D-type flip–flop featuring separate D-type inputs for each flip-flop and non-inverting 3-state outputs for oriented applications. A clock (CP) and an output enable (OE) input are common to all flip-flops. The eight flip-flops will store the state of their individual D- inputs that meet the set-up and hold times requirements on the LOW-to- HIGH CP transition. When OE is LOW, the contents of the eight flip-flops are available at the outputs. When OE is HIGH, the outputs go to the high impedance OFF-state. Operation of the OE input does not affect the state of the flip-flops.
The IN74LV574 is a low‑voltage Si‑gate CMOS octal D‑type flip‑flop with separate D inputs and non‑inverting 3‑state outputs. All flip‑flops share a common clock (CP) and output‑enable (OE) input, and the device is pin‑compatible with the 74HC/HCT574 family.
The datasheet lists supply voltage range, input and output current limits, propagation delays, and timing requirements, as well as mechanical dimensions for both Plastic DIP and SOIC packages. Recommended operating temperature spans –40 °C to +125 °C, and maximum ratings are provided for safe operation.
| Supply voltage range | 1.0 to 5.5 V |
|---|---|
| Low input current | 1.0 pA (0.1 pA at 25 °C) |
| Operating temperature range | -40 °C to +125 °C |
The device operates with a supply voltage from 1.0 V to 5.5 V.
The recommended operating temperature is from –40 °C to +125 °C for all package types.