Texas Instruments SN74LV175ANSR

Overview

SN74LV175ANSR from Texas Instruments is a quadruple positive-edge-triggered D-type flip-flop with asynchronous clear, designed for 2 V to 5.5 V operation. It features complementary Q and Q̅ outputs per stage, 7.5 ns maximum propagation delay at 5 V, Ioff support for partial-power-down mode, and mixed-mode voltage interface capability across all ports. It serves as a synchronous storage register in digital control logic and data latching circuits.

For engineers reviewing the SN74LV175ANSR datasheet, SN74LV175ANSR pinout, SN74LV175ANSR application, or SN74LV175ANSR equivalent, this page delivers verified functional identity, SOIC-16 (NS) package mapping, confirmed timing and DC electrical specs, and two validated alternative parts for register-level logic replacement in industrial and embedded systems.

Technical Context

The SN74LV175ANSR implements four independent D-type latches synchronized to the rising edge of CLK, each with dedicated CLR input and dual-rail (Q/Q̅) outputs. Its CMOS design ensures rail-to-rail output swing, low dynamic ground bounce (<0.8 V), and controlled VOH undershoot (>2.3 V at 3.3 V).

It supports Ioff isolation to prevent backflow during partial power-down and tolerates 5.5 V inputs regardless of VCC level-enabling level translation from higher-voltage buses to lower-VCC logic domains without external circuitry.

Key Specifications

Pinout & Package

SOP-16 (NS) package: 10.3 mm × 1.95 mm body, 1.27 mm pitch, 2.00 mm max height, gull-wing leads, RoHS-compliant NIPDAU finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LV175ANSR, the SN74LV175ADR offers better thermal performance in legacy layouts, while SN74LV175APWR saves board area at the cost of reduced thermal headroom-making NS the balanced choice for new industrial designs needing compactness, manufacturability, and thermal robustness.

Availability

SN74LV175ANSR is available at Aetrix Electronics and suitable for industrial control logic, serial-to-parallel data latching, buffered address register, and pattern generator feedback stage applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for SN74LV175ANSR 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 over 90 years of innovation in industrial, automotive, and communications markets.

The SN74LV175ANSR belongs to TI's LV family of low-voltage CMOS logic devices, engineered for robust mixed-signal interfacing, wide supply tolerance, and reliable operation in harsh industrial environments.

FAQ

What is the function of the CLR pin on the SN74LV175ANSR?

The CLR (Clear) pin on the SN74LV175ANSR is an asynchronous active-low input that forces all four Q outputs to logic low and all Q̅ outputs to logic high, independent of the clock signal. This reset action occurs immediately upon CLR assertion and holds until CLR is deasserted, making it ideal for system initialization or fault recovery sequences in the SN74LV175ANSR-based design.

Does the SN74LV175ANSR support 5 V input signals when operating at 3.3 V VCC?

Yes, the SN74LV175ANSR supports 5.5 V-tolerant inputs across all pins-including D, CLK, and CLR-regardless of VCC level (2 V to 5.5 V). When VCC = 3.3 V, applying 5 V to any input does not damage the device and maintains valid logic thresholds, enabling seamless level translation in mixed-voltage systems using the SN74LV175ANSR.

What is the maximum clock frequency supported by the SN74LV175ANSR at 5 V supply?

At VCC = 5 V ± 0.5 V and CL = 15 pF, the SN74LV175ANSR guarantees a maximum operating frequency of 125 MHz (minimum fmax) with typical performance reaching 215 MHz. This is derived from its 7.5 ns maximum propagation delay and validated timing margins in the official SN74LV175ANSR datasheet revision J.

How does the Ioff feature of the SN74LV175ANSR improve system reliability?

The Ioff feature in the SN74LV175ANSR disables all outputs when VCC = 0 V, limiting off-state leakage to ≤5 µA. This prevents damaging back-current flow from live buses into unpowered sections-a critical safeguard during hot-swap, partial power-down, or multi-rail sequencing events in systems deploying the SN74LV175ANSR.

Is the SN74LV175ANSR pin-compatible with older 74LS175 or 74HC175 devices?

No, the SN74LV175ANSR is not pin-compatible with 74LS175 or 74HC175. While all are quadruple D-type flip-flops, the SN74LV175ANSR uses a 16-pin SOP (NS) package with distinct pin assignments-including dual-rail outputs (Q/Q̅ per stage) and shared CLK/CLR-whereas LS/HC variants use different pinouts and lack complementary outputs. Direct replacement requires PCB redesign.