CD74AC574M96G4

Overview

The CD74AC574M96G4 is an octal D-type flip-flop manufactured by Texas Instruments within the AC logic series. It features non-inverting outputs with three-state capability, housed in a 20-pin SOIC package. The device operates on a supply voltage ranging from 2 V to 6 V and supports through-hole or surface-mount installation styles depending on specific variant configurations, though this part typically denotes surface mount. It exhibits a propagation delay of 135 ns and provides high-level and low-level output currents of -24 mA and 24 mA respectively. The component functions reliably across an extended temperature range from -55 °C to +125 °C.

Feature Summary

• Octal configuration providing eight independent D-type flip-flops within a single integrated circuit
• Three-state output architecture enabling direct bus line connections without external buffer drivers
• Non-inverting data path ensuring output states match input D conditions upon clock triggering
• CMOS input structure compatible with standard logic families while maintaining low static power consumption

Applications

• Parallel-to-serial data conversion circuits requiring temporary storage registers
• High-speed digital signal processing systems utilizing wide data buses
• Microprocessor interface modules for address and data latching operations
• Industrial control systems operating under extreme environmental temperature conditions

Procurement Notes

Verify the exact package type and pinout configuration against the official datasheet before integration, as suffix variations can indicate different physical dimensions or lead finishes. Confirm that the AC logic family voltage levels align with the target system's I/O requirements. Ensure thermal management strategies account for the specified maximum operating temperature limits during continuous high-frequency switching operations.

Selection Notes

Select this component when designing systems requiring wide voltage operation flexibility combined with high drive current capabilities for long trace lengths. The AC series offers superior speed compared to HC variants while maintaining CMOS compatibility. Consider the three-state feature if multiple devices share common data lines to minimize contention risks and simplify board layout routing for complex digital architectures.

Part Context

This device belongs to the Texas Instruments CD74AC574 family of octal D-type flip-flops. It serves as a core memory element in sequential logic design, distinct from transparent latches like the 573 series by utilizing edge-triggered state changes. The AC series represents a high-performance silicon gate technology optimized for applications demanding faster switching speeds than standard TTL equivalents while retaining low power dissipation characteristics suitable for battery-operated portable electronics.

Replacement Considerations

SN74AC574DWR

FAQ

What is the specific trigger mechanism for the CD74AC574M96G4?

The device utilizes positive-edge triggering, meaning the output state updates to match the D input only at the rising edge of the clock signal.

How does the three-state output function operate?

The outputs enter a high-impedance state when the enable input is deactivated, effectively disconnecting them from the circuit to prevent bus interference.