SN74HCS16507PWR

Shift Registers Overview

The SN74HCS16507PWR is an 8-bit parallel-load shift register from the HCS logic family, housed in a 16-pin TSSOP package. It features Schmitt-trigger inputs and open-drain outputs. The device operates on a supply voltage ranging from 2 V to 6 V and supports an ambient temperature range of -40°C to +125°C. Key electrical parameters include a typical supply current of 100 nA, output drive capability of 7.8 mA at 6 V, and propagation delays varying with voltage and temperature.

Shift Registers Feature Summary

• Schmitt-trigger inputs provide high noise immunity and tolerance for slow or noisy input signals.
• Open-drain CMOS outputs allow for wired-AND configurations and flexible voltage level interfacing.
• Low power consumption design ensures minimal static current draw during operation.

Shift Registers Applications

• Increasing the number of available inputs for microcontrollers
• Parallel-to-serial data conversion systems
• Cascaded shift register chains for expanded I/O

Shift Registers Procurement Notes

Verify the specific ordering suffix 'PW' corresponds to the TSSOP-16 package variant required for your PCB layout. Confirm that the open-drain output architecture aligns with your system's pull-up resistor requirements and voltage levels. Ensure the automotive or industrial qualification status matches your application needs, as indicated by the base part number designation.

Shift Registers Selection Notes

Select this component when designing systems requiring significant expansion of digital input lines through serial communication. The inclusion of Schmitt triggers makes it suitable for environments with signal integrity challenges or slow transition times. Consider the open-drain nature of the outputs when determining interface compatibility with downstream logic families.

Shift Registers Part Context

This device belongs to Texas Instruments' HCS (High-Speed CMOS) logic family, which combines the speed of HC devices with the robust input characteristics of HCT/HCU devices. The SN74HCS16507 specifically addresses applications needing reliable data shifting with enhanced noise rejection capabilities compared to standard CMOS logic.

Shift Registers Replacement Considerations

Direct pin-compatible alternatives within the same family may include other variants in the SN74HCS165xx series, provided they match the specific output configuration and package requirements. Verify functional equivalence regarding the open-drain outputs and Schmitt-trigger input specifications before substitution.

Shift Registers FAQ

How do unused inputs behave on this device?

Unused inputs must not be left floating. They should be terminated to either VCC or ground using appropriate resistors to prevent undefined operational states and excessive power consumption.

What is the recommended bypass capacitor value?

A 0.1-μF capacitor is recommended for each VCC terminal, placed physically close to the device to prevent power disturbances.