SN74LV165ADBR

Shift Registers Overview

The SN74LV165ADBR is a parallel-load, 8-bit shift register from the Texas Instruments SN74LV series. It operates within a supply voltage range of 2 V to 5.5 V and supports mixed-mode voltage operation on all ports. The device features balanced CMOS push-pull outputs and includes clock-inhibit functionality alongside a complemented serial output (QH). Designed for surface-mount applications, it utilizes a 16-SSOP package. The component incorporates Ioff circuitry to support partial-power-down modes by disabling outputs to prevent damaging current backflow when powered down.

Shift Registers Feature Summary

• Supports mixed-mode voltage operation across all ports
• Includes Ioff circuitry for partial-power-down mode compatibility
• Features balanced CMOS push-pull outputs with latch-up protection exceeding 250 mA per JESD 17

Shift Registers Applications

• Increasing the number of inputs available to a microcontroller
• Bus interface type applications requiring low drive characteristics
• Input expansion systems utilizing shift registers

Shift Registers Procurement Notes

Verify that the specific ordering suffix 'DBR' corresponds to the SSOP package and tape-and-reel packaging format as documented in the manufacturer's orderable addendum. Confirm that the component meets RoHS3 compliance standards and matches the exact SN74LV165A functional specification before integration into production designs.

Shift Registers Selection Notes

Select this component when an 8-bit parallel-to-serial conversion capability is required within a 2 V to 5.5 V operating environment. Ensure the design accommodates the 16-SSOP footprint dimensions. Consider the mixed-mode voltage support if interfacing with logic families operating at different voltage levels than the primary supply.

Shift Registers Part Context

This part belongs to the SN74LV family of low-voltage CMOS logic devices manufactured by Texas Instruments. The SN74LV165A variant specifically provides parallel-load shift register functionality. The 'DBR' suffix indicates the physical package configuration and reel packaging method, distinguishing it from other variants such as SOIC or TSSOP packages within the same logical family.

Shift Registers Replacement Considerations

SN74LV165ADBRG4

Shift Registers FAQ

How does the SH/LD input control data loading?

Holding the SH/LD input at a low level enables parallel access to the eight individual direct data inputs, allowing immediate loading of data into the internal registers.

What is the function of the CLK INH pin?

The CLK INH pin serves as a clock-inhibit function. Clocking occurs via a low-to-high transition of the CLK input while CLK INH is held low, or vice versa, allowing interchangeable use of these control signals.