74AHCT595PW,118

Shift Registers Overview

The Nexperia 74AHCT595PW,118 is an 8-bit serial-in/serial or parallel-out shift register with output latches and 3-state outputs. It operates within a supply voltage range of 2.0 V to 5.5 V and features TTL compatible inputs. The device includes separate clocks for the shift and storage registers, an asynchronous master reset (MR), and a serial output (Q7S) for cascading. It utilizes a TSSOP16 package (SOT403-1) and supports an operating temperature range from -40 °C to +125 °C.

Shift Registers Feature Summary

• Features balanced propagation delays and Schmitt-trigger action at all inputs for high noise immunity.
• Includes overvoltage tolerant inputs up to 5.5 V, enabling use as translators in mixed voltage environments.
• Provides ESD protection exceeding 2000 V according to HBM standards and 1000 V according to CDM standards.

Shift Registers Applications

• Serial-to-parallel data conversion
• Remote control holding register

Shift Registers Procurement Notes

Verify that the ordering suffix ,118 corresponds to the specified TSSOP16 (SOT403-1) package configuration. Confirm compatibility with the required ambient temperature range of -40 °C to +125 °C for your specific application environment. Ensure input signal levels align with the TTL logic requirements defined for the AHCT series.

Shift Registers Selection Notes

Select this component when TTL-compatible input levels are required alongside AHC performance characteristics. The 74AHCT595 variant specifically addresses systems needing direct interfacing with TTL logic without additional level shifting. Verify that the 3-state output capability meets bus sharing requirements and that the TSSOP16 footprint fits the target PCB layout constraints.

Shift Registers Part Context

This part belongs to the 74AHC/AHCT family of high-speed CMOS logic devices manufactured by Nexperia. It shares functional similarities with other 8-bit shift registers but is distinguished by its specific input voltage thresholds and package options. The PW suffix indicates the thin shrink small outline plastic package variant designed for surface-mount assembly.

Shift Registers Replacement Considerations

Direct substitutes include the 74AHC595PW,118 for CMOS input levels or the 74HCT595PW variants for standard HCT specifications. Cross-reference package codes SOT403-1 to ensure mechanical compatibility during board re-designs.

Shift Registers FAQ

How does the 74AHCT595 differ from the 74AHC595 regarding input levels?

The 74AHCT595 operates with TTL input levels, whereas the 74AHC595 operates with CMOS input levels. Both share the same output characteristics and supply voltage ranges.

What is the function of the OE pin on this device?

The Output Enable (OE) input controls the state of the parallel outputs. When OE is LOW, data appears at the outputs; when HIGH, the outputs assume a high-impedance OFF-state.