Texas Instruments SN74LVC1G175DCKR

Overview

SN74LVC1G175DCKR from Texas Instruments is a single D-type flip-flop with asynchronous clear, designed for 1.65-V to 5.5-V operation, featuring 4.3 ns max propagation delay at 3.3 V, ±24-mA output drive, and Ioff support for live insertion and partial-power-down modes. It serves as a compact edge-triggered storage element in clock-synchronized digital control paths.

For engineers reviewing the SN74LVC1G175DCKR datasheet, SN74LVC1G175DCKR pinout, SN74LVC1G175DCKR application, or SN74LVC1G175DCKR equivalent, key selection criteria include its SC70-6 package footprint, asynchronous CLR functionality, 125-MHz max clock frequency at 2.5 V, and 5.5-V tolerant inputs enabling level translation in mixed-voltage systems.

Technical Context

The SN74LVC1G175DCKR implements positive-edge-triggered D-flip-flop logic with an active-low asynchronous clear (CLR), forcing Q low independently of CLK or D. Its CMOS design ensures rail-to-rail input voltage tolerance up to 5.5 V regardless of VCC, supporting down-translation from higher-voltage domains.

It integrates Ioff circuitry that disables outputs during power-down, preventing back-drive current flow, and meets JESD 78 Class II latch-up immunity (>100 mA). The device operates across –40°C to 125°C and supports stable timing with setup/hold times as low as 0.5 ns at 3.3 V.

Key Specifications

Pinout & Package

SN74LVC1G175DCKR uses the SC70-6 (DCK) package, measuring 2.00 mm × 1.25 mm with 0.65-mm lead pitch. This ultra-small outline supports high-density PCB layouts in space-constrained applications such as portable electronics and modular sensor nodes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar D-type flip-flop applications.

Compared with SN74LVC1G175DCKR, SN74LVC1G74DCKR offers dual outputs but removes asynchronous reset capability, while 74LVC1G175GW,125 trades pin count and thermal performance for vendor diversification - neither provides drop-in replacement without design validation.

Availability

SN74LVC1G175DCKR is available at Aetrix Electronics and suitable for industrial motor control, portable medical sensors, smart grid communication modules, and embedded point-of-sale terminals requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for SN74LVC1G175DCKR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with over 50 years of innovation in logic, power management, and signal chain solutions.

The SN74LVC1G175DCKR belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for low-power, high-speed, mixed-voltage interoperability in space- and power-constrained embedded systems.

FAQ

What is the maximum clock frequency supported by SN74LVC1G175DCKR?

The SN74LVC1G175DCKR supports up to 175 MHz at 5 V, 150 MHz at 3.3 V, and 125 MHz at 2.5 V across –40°C to 125°C. These values are specified in the Switching Characteristics tables (Sections 6.8–6.10) and assume CL = 15 pF for 3.3 V operation. At 3.3 V and 25°C, typical fmax is 150 MHz with 15-pF load.

Does SN74LVC1G175DCKR support operation below 1.8 V?

Yes, SN74LVC1G175DCKR is fully specified from 1.65 V to 5.5 V. At 1.65 V, it delivers guaranteed functionality including 100-MHz clock operation, 5.6-ns minimum CLR pulse width, and 12.9-ns max tPD - validated per Recommended Operating Conditions (Section 6.3) and Electrical Characteristics (Section 6.5).

How does the Ioff feature of SN74LVC1G175DCKR protect system-level designs?

The Ioff circuitry in SN74LVC1G175DCKR disables outputs when VCC = 0, limiting Ioff current to ±10 µA. This prevents back-driving powered-down sections of the board - critical for hot-swap interfaces, modular backplanes, and multi-rail power sequencing where subsystems power up/down independently.

Can SN74LVC1G175DCKR inputs safely accept 5-V signals while operating at 1.8 V VCC?

Yes. SN74LVC1G175DCKR inputs tolerate voltages up to 5.5 V regardless of VCC level, enabling direct interfacing with 5-V peripherals without external level shifters. This is explicitly confirmed in Section 8.3 ("Feature Description") and Table 6.1 (Absolute Maximum Ratings) of the datasheet.

What is the thermal resistance (RθJA) of SN74LVC1G175DCKR in its SC70-6 package?

The junction-to-ambient thermal resistance (RθJA) for SN74LVC1G175DCKR in the SC70-6 (DCK) package is 259°C/W, as documented in Section 6.4 (Thermal Information). This value assumes standard JEDEC high-K test board conditions and informs thermal design margining for continuous operation at 125°C ambient.