Texas Instruments 74LVCH16374ADGVRE4

Overview

74LVCH16374ADGVRE4 from Texas Instruments is a 16-bit edge-triggered D-type flip-flop with 3-state outputs, designed for 1.65 V to 3.6 V operation. It features dual 8-bit banks (1Q1–1Q8 and 2Q1–2Q8), independent output-enable (1OE/2OE) and clock (1CLK/2CLK) inputs, 5.5-V-tolerant inputs, and 24-mA output drive at 3.3 V - enabling bus interface and level translation in mixed-voltage systems such as server memory buffers.

For engineers reviewing the 74LVCH16374ADGVRE4 datasheet, 74LVCH16374ADGVRE4 pinout, 74LVCH16374ADGVRE4 application, or 74LVCH16374ADGVRE4 equivalent, this device supports high-speed latching up to 150 MHz, Ioff-enabled live insertion, bus-hold on all data inputs, and robust ESD protection (2000-V HBM), making it critical for industrial embedded control and telecom infrastructure design where signal integrity and power sequencing matter.

Technical Context

This device implements two independent 8-bit positive-edge-triggered D flip-flop banks, each with dedicated 3-state output enable and clock inputs. Internal bus-hold circuitry eliminates external pull resistors on unused data inputs, while Ioff functionality blocks current backflow during partial power-down.

It supports mixed-mode signal operation: inputs tolerate 0–5.5 V regardless of VCC (1.65–3.6 V), enabling seamless 5-V-to-3.3-V down-translation. Propagation delay is 4.5 ns typical at 3.3 V, and output ground bounce (VOLP) remains below 0.8 V under load - key for noise-sensitive digital interfaces.

Key Specifications

Pinout & Package

74LVCH16374ADGVRE4 is packaged in a 48-pin TVSOP (DGV) with nominal body size 9.70 mm × 4.40 mm and 0.4-mm lead pitch. This ultra-thin, space-efficient package supports high-density PCB layouts in networking and portable electronics.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit D-type flip-flop applications.

Compared with SN74LVC16374ADGGR and 74ALVCH16374DLR, the 74LVCH16374ADGVRE4 uniquely combines 5.5-V input tolerance, Ioff, and bus-hold in a compact TVSOP package - delivering superior mixed-signal interoperability and system-level robustness without layout or BOM trade-offs.

Availability

74LVCH16374ADGVRE4 is available at Aetrix Electronics and suitable for server memory buffering, industrial PLC I/O expansion, network switch fabric interface, and automotive ADAS camera link applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for 74LVCH16374ADGVRE4 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 innovation in high-reliability interface and timing ICs.

The SN74LVCH16374A belongs to TI's Widebus™ family - engineered specifically for high-speed, low-voltage bus interface applications demanding robust voltage translation, hot-swap capability, and noise-immune data latching.

FAQ

What is the maximum clock frequency supported by the 74LVCH16374ADGVRE4?

The 74LVCH16374ADGVRE4 supports a maximum clock frequency of 150 MHz across its full operating voltage range (1.65 V to 3.6 V), as confirmed by timing characterization in the official datasheet. This specification holds under recommended conditions including CL = 30–50 pF and VIH/VIL thresholds met - enabling use in high-speed memory and packet-processing interfaces where precise edge-aligned sampling is required.

Does the 74LVCH16374ADGVRE4 support 5-V input signals while operating at 3.3-V VCC?

Yes, the 74LVCH16374ADGVRE4 accepts input voltages up to 5.5 V regardless of VCC level - a documented feature enabling true 5-V-to-3.3-V down-translation. This capability is explicitly verified in the "Recommended Operating Conditions" table and electrical characteristics section of the TI datasheet, eliminating need for external level shifters when interfacing with legacy 5-V logic or microcontrollers.

How does the Ioff feature of the 74LVCH16374ADGVRE4 protect the system during power sequencing?

The Ioff feature in the 74LVCH16374ADGVRE4 disables output drivers and blocks current flow when VCC = 0 V, preventing damaging back-current from powered I/O lines into an unpowered device. This behavior is characterized per JESD78 and validated in the datasheet's Ioff leakage spec (±10 μA), making the 74LVCH16374ADGVRE4 suitable for live-insertion scenarios such as modular telecom line cards and hot-swappable storage controllers.

Can unused data inputs on the 74LVCH16374ADGVRE4 be left floating?

No - but bus-hold circuitry automatically maintains unused 74LVCH16374ADGVRE4 data inputs at valid logic levels without external resistors. The datasheet confirms ±45 μA bus-hold current at 2.3 V, ensuring stable high or low states even when inputs are unterminated. However, best practice still recommends tying control inputs (OE, CLK) to defined rails to prevent unintended toggling during power-up.

What is the thermal resistance (RθJA) of the 74LVCH16374ADGVRE4 in its TVSOP package?

The 74LVCH16374ADGVRE4 in TVSOP (DGV) package has a junction-to-ambient thermal resistance (RθJA) of 78.4°C/W, as specified in the "Thermal Information" table of the TI datasheet. This value assumes standard JEDEC 2-layer board conditions; actual thermal performance improves with added copper pour, thermal vias, or forced airflow - critical for sustained 150-MHz operation in enclosed industrial enclosures.