74AHC594S16-13

Overview

The 74AHC594S16-13 is an advanced high-speed CMOS logic device manufactured by Diodes Incorporated, functioning as an 8-bit shift register with an 8-bit output register. It accepts serial data input (DS) and shifts it into the internal storage register on positive transitions of the shift register clock (SHCP). The data is then transferred to the parallel outputs (Q0-Q7) via the storage register clock (STCP). The component operates within a supply voltage range of 2.0V to 5.5V and features Schmitt trigger inputs for noise immunity.

Feature Summary

• Provides serial-to-parallel data conversion capabilities using dedicated shift and storage registers.
• Includes independent active-low reset functions for both the shift register and the storage register.
• Features push-pull outputs capable of sourcing or sinking current at specified voltage levels.

Applications

• General purpose logic applications
• Serial to parallel data conversion
• Computer peripherals
• Appliances
• Industrial control systems

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the S16 suffix indicates an SO-16 package while T16 denotes TSSOP-16. Confirm RoHS compliance status and ensure the procurement channel is authorized to avoid counterfeit components. Check datasheet revision history for any functional updates before finalizing specifications.

Selection Notes

Select this component when an 8-bit shift register with parallel output is required in an AHC logic family. Ensure the operating voltage falls between 2.0V and 5.5V. Consider the SO-16 package availability if surface mount space allows. Verify that the input voltage requirements align with the system's logic levels, noting the Schmitt trigger action provides tolerance for slower input transitions.

Part Context

This part belongs to the 74AHC series of advanced high-speed CMOS logic devices produced by Diodes Incorporated. It is functionally compatible with standard 74HC594 designs but offers improved speed and lower power consumption characteristics typical of the AHC family. The device is designed for general-purpose digital logic applications requiring reliable data shifting and latching.

Replacement Considerations

The 74AHC594T16-13 serves as a direct substitute offering identical functionality in a TSSOP-16 package instead of the SO-16 form factor. Other manufacturers' 74AHC594 equivalents may be considered provided pinouts and electrical characteristics match the original specifications.

FAQ

How does the 74AHC594 handle data shifting and outputting?

Data enters the shift register via the DS pin on positive transitions of SHCP. When STCP receives a rising pulse, the contents of the shift register are transferred to the storage register and appear on the parallel outputs Q0-Q7.

What is the function of the SHR and STR pins?

SHR (Shift Register Reset) and STR (Storage Register Reset) are active-low inputs. Asserting them low sets all corresponding register values to zero independently of the clock signals.