Texas Instruments 74LVC1G175DCKRG4

Overview

74LVC1G175DCKRG4 from Texas Instruments is a single D-type flip-flop with asynchronous clear, designed for 1.65-V to 5.5-V V_CC operation. It features a 6-pin SC70 package, 4.3 ns max propagation delay at 3.3 V, ±24-mA output drive, and I_off support for live insertion and partial-power-down modes. It is used in serial shift register stages within compact digital control circuits.

For engineers reviewing the 74LVC1G175DCKRG4 datasheet, 74LVC1G175DCKRG4 pinout, 74LVC1G175DCKRG4 application, or 74LVC1G175DCKRG4 equivalent, key selection criteria include asynchronous clear behavior, 1.65–5.5 V supply compatibility, overvoltage-tolerant 5.5 V inputs, low-power operation (10 µA max I_CC), and NanoFree™ SC70 footprint suitability for space-constrained PCBs.

Technical Context

The 74LVC1G175DCKRG4 implements positive-edge-triggered D-type latching with an active-low asynchronous clear (CLR). When CLR is high, Q follows D on CLK rising edges; when CLR is low, Q forces low regardless of CLK or D state. Its CMOS design ensures rail-to-rail input voltage tolerance up to 5.5 V independent of V_CC.

It supports down-translation (e.g., 5-V inputs into 3.3-V or 1.8-V systems) and includes I_off circuitry that disables outputs during power-down to prevent back-drive current. Latch-up performance exceeds 100 mA per JESD 78 Class II, and ESD protection meets 2000-V HBM, 1000-V CDM, and 200-V MM standards.

Key Specifications

Pinout & Package

74LVC1G175DCKRG4 uses the SC70-6 (DCK) package, measuring 2.00 mm × 1.25 mm with 0.65-mm lead pitch. This ultra-small footprint supports high-density routing in portable and embedded designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G74DCKR and 74LVC1G79DCKRG4, the 74LVC1G175DCKRG4 uniquely delivers true asynchronous clear in the smallest SC70 footprint, making it the only option among the three for applications demanding immediate, clock-free output forcing - such as fault recovery or hardware-initiated system reset.

Availability

74LVC1G175DCKRG4 is available at Aetrix Electronics and suitable for serial shift registers, digital control signal storage, low-voltage sensor interfaces, and portable device power sequencing requiring stable component supply and guaranteed long-term sourcing.

Supply support for 74LVC1G175DCKRG4 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 logic solutions, with decades of expertise in high-reliability, low-power logic families.

The SN74LVC1G175 series was engineered for space-constrained, mixed-voltage digital systems requiring robust asynchronous control, low static power, and seamless voltage translation - targeting industrial automation, medical wearables, and portable consumer electronics.

FAQ

What is the function of the CLR pin on the 74LVC1G175DCKRG4?

The CLR (clear) pin on the 74LVC1G175DCKRG4 is an active-low asynchronous input. When asserted low, it forces the Q output to logic low immediately-regardless of the CLK signal or D input state. When high, the device operates as a standard positive-edge-triggered D flip-flop. This behavior is confirmed in the functional table and timing diagrams of the official TI datasheet SCES560G.

Does the 74LVC1G175DCKRG4 support operation at 1.8 V?

Yes, the 74LVC1G175DCKRG4 is fully specified for 1.65 V to 5.5 V V_CC operation, including reliable functionality at 1.8 V ± 0.15 V. At this voltage, it achieves a maximum clock frequency of 125 MHz and propagation delay of ≤12.9 ns (CL = 15 pF), as documented in Section 6.6 of the SCES560G datasheet.

Can the 74LVC1G175DCKRG4 accept 5-V input signals when powered from 3.3 V?

Yes, the 74LVC1G175DCKRG4 supports input voltages up to 5.5 V independent of V_CC. When V_CC = 3.3 V, the D, CLK, and CLR inputs tolerate 0–5.5 V signals-enabling direct interfacing with 5-V microcontrollers or sensors without external level shifters, as stated in the "Inputs Accept Voltages to 5.5 V" feature and Section 6.3 of SCES560G.

What is the thermal resistance (R_θJA) of the 74LVC1G175DCKRG4 in its SC70 package?

The junction-to-ambient thermal resistance (R_θJA) of the 74LVC1G175DCKRG4 in the SC70 (DCK) package is 259°C/W, as specified in Table 6.4 of the SCES560G datasheet. This value assumes standard JEDEC test conditions (single-layer board, no copper pour); actual board-level performance improves with thermal vias and copper flooding.

Is the 74LVC1G175DCKRG4 pin-compatible with other members of the SN74LVC1Gxx family?

No-pin compatibility is not guaranteed across the SN74LVC1Gxx family. The 74LVC1G175DCKRG4 has a fixed 6-pin SC70 assignment (CLK, GND, D, Q, V_CC, CLR), whereas other variants like SN74LVC1G74 or SN74LVC1G79 use different pinouts even in the same package. Always verify pin functions using the "Pin Configuration and Functions" section of SCES560G before board reuse.