SN74HCS16507QPWRQ1

Shift Registers Overview

The SN74HCS16507QPWRQ1 is an automotive-grade, 8-bit parallel-load shift register with open-drain outputs and Schmitt-trigger inputs. It operates within a supply voltage range of 2 V to 6 V and supports ambient temperatures from -40°C to +125°C. The device features low power consumption with typical supply current of 100 nA and input leakage of ±100 nA. It provides 7.8-mA output drive capability at 6 V. Propagation delay ranges from 17 ns to 65 ns depending on voltage and temperature. Clock frequency reaches up to 170 MHz at 6 V.

Shift Registers Feature Summary

• Schmitt-trigger inputs enable reliable operation with slow or noisy signals while rejecting noise through defined hysteresis thresholds.
• Open-drain CMOS outputs allow for wired-AND configurations and flexible voltage level shifting when paired with external pull-up resistors.
• Dual-mode functionality supports both asynchronous parallel data loading and serial shifting via rising-edge clock triggers.

Shift Registers Applications

• Expanding the number of available inputs for microcontrollers in automotive systems
• Cascading multiple units to increase data input capacity using a single serial controller line
• Interfacing peripheral devices requiring robust signal integrity under noisy electrical environments

Shift Registers Procurement Notes

Verify that the component carries AEC-Q100 qualification for automotive reliability. Confirm the specific package variant matches design requirements, as the family includes TSSOP and SOIC options. Ensure input pins are terminated to logic high or low states during implementation to prevent undefined operational states caused by floating inputs.

Shift Registers Selection Notes

Select this component when designing circuits requiring wide voltage tolerance between 2 V and 6 V. The inclusion of Schmitt-trigger inputs makes it suitable for applications involving slow transition rates or high-noise environments. Open-drain outputs provide flexibility for interfacing with different logic families or implementing bus structures.

Shift Registers Part Context

This device belongs to the Texas Instruments SN74HCS16507-Q1 family of automotive logic components. It is part of the broader HCS (High-Speed CMOS) series designed for demanding automotive environments. The product is manufactured to meet strict quality standards required for vehicle electronics applications.

Shift Registers Replacement Considerations

Direct substitutes include other members of the SN74HCS16507-Q1 family such as the SN74HCS16507PW-Q1 in TSSOP packaging or the SN74HCS16507D-Q1 in SOIC packaging. Verify pin compatibility and thermal characteristics when substituting between package types.

Shift Registers FAQ

How do unused inputs affect the device operation?

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

What is the maximum capacitive load recommended for optimal performance?

The device can drive loads with total capacitance less than or equal to 50 pF while meeting all datasheet specifications. Exceeding this value is not recommended.