Texas Instruments SN74LVCH16374ADGVR

Overview

SN74LVCH16374ADGVR 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 sections (1CLK/1OE and 2CLK/2OE), 5.5-V-tolerant inputs, bus-hold on all data inputs, and I_off support for live insertion and partial-power-down. It delivers 24 mA output drive at 3.3 V and enables high-speed bus interfacing in compact TVSOP-48 packages.

For engineers reviewing the SN74LVCH16374ADGVR datasheet, SN74LVCH16374ADGVR pinout, SN74LVCH16374ADGVR application, or SN74LVCH16374ADGVR equivalent, this page provides verified functional modes, timing parameters (t_pd = 4.5 ns @ 3.3 V), thermal metrics (R_θJA = 78.4 °C/W), bus-hold behavior, and mixed-voltage translation capability - critical for server I/O buffering, industrial PLC backplanes, and wearable device data latching.

Technical Context

This device implements two independent 8-bit positive-edge-triggered D flip-flop banks, each with dedicated clock (1CLK/2CLK) and output-enable (1OE/2OE) controls. Outputs enter high-impedance state when OE is high, preserving internal latch state regardless of OE level - enabling concurrent data retention and bus release.

Its I_off circuitry blocks current flow when V_CC = 0 V, supporting hot-plug operation; bus-hold eliminates external pull resistors on unused D inputs; and 5.5-V-tolerant inputs allow direct interfacing with 5-V logic while powered from 3.3 V or lower.

Key Specifications

Pinout & Package

SN74LVCH16374ADGVR uses a 48-pin Thin Very Small Outline Package (TVSOP) with 9.70 mm × 4.40 mm body size and 0.4 mm lead pitch. The package is RoHS-compliant, moisture sensitivity level 1 (260°C peak reflow), and optimized for high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVCH16374ADGVR, SN74LVC16374ADGGR lacks bus-hold and true 5.5-V tolerance - requiring external pull resistors and level shifters in mixed-voltage designs - while 74ALVCH16374TTR offers faster timing but diverges in qualification scope and thermal resistance (R_θJA = 72.1 °C/W vs. 78.4 °C/W).

Availability

SN74LVCH16374ADGVR is available at Aetrix Electronics and suitable for server memory buffering, industrial PLC backplane interfaces, wearable health sensor hubs, and network switch control plane applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant TVSOP packaging.

Supply support for SN74LVCH16374ADGVR 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 interface ICs and widebus technologies.

The SN74LVCH16374ADGVR belongs to TI's Widebus™ family of advanced CMOS logic devices, engineered specifically for high-speed, low-voltage bus interfacing in servers, industrial automation, and portable electronics where signal integrity, power efficiency, and mixed-voltage compatibility are essential.

FAQ

What is the maximum clock frequency supported by the SN74LVCH16374ADGVR?

The SN74LVCH16374ADGVR supports a maximum clock frequency of 150 MHz across its full operating voltage range (1.65 V to 3.6 V), as specified in the switching characteristics table under recommended conditions. This performance is maintained at V_CC = 3.3 V ± 0.3 V and TA = –40°C to 125°C, making the SN74LVCH16374ADGVR suitable for high-throughput data latching in real-time control and networking applications.

Does the SN74LVCH16374ADGVR support 5-V input signals while operating at 3.3 V VCC?

Yes, the SN74LVCH16374ADGVR accepts input voltages up to 5.5 V regardless of V_CC level - including when V_CC = 3.3 V - enabling direct interfacing with 5-V logic without external level shifters. This capability is explicitly guaranteed in the "Recommended Operating Conditions" table and confirmed by the absolute maximum rating of VI = –0.5 V to 6.5 V, ensuring robust mixed-voltage operation in the SN74LVCH16374ADGVR.

How does the bus-hold feature function on the SN74LVCH16374ADGVR data inputs?

The SN74LVCH16374ADGVR integrates active bus-hold circuitry on all 16 D inputs, which maintains a valid logic state (high or low) on floating or unterminated pins using ±45 μA to ±75 μA hold current depending on V_CC. This eliminates the need for external pull-up or pull-down resistors, reducing BOM cost and board space - a key design advantage confirmed in the "Feature Description" and "Electrical Characteristics" sections of the SN74LVCH16374ADGVR datasheet.

What is the purpose of the Ioff specification for the SN74LVCH16374ADGVR?

The I_off specification ensures that the SN74LVCH16374ADGVR disables all outputs and blocks current flow when V_CC = 0 V, preventing damaging back-current from live system buses into an unpowered device. With I_off ≤ ±10 μA at V_I/V_O = 5.5 V, the SN74LVCH16374ADGVR supports safe hot-insertion in modular systems like PLC backplanes and server midplanes - a requirement explicitly validated in JESD78 testing.

Can the SN74LVCH16374ADGVR be used as two independent 8-bit flip-flops?

Yes, the SN74LVCH16374ADGVR is architecturally divided into two independent 8-bit sections: Bank 1 (1CLK, 1OE, 1D1–1D8, 1Q1–1Q8) and Bank 2 (2CLK, 2OE, 2D1–2D8, 2Q1–2Q8). Each bank operates autonomously - allowing separate clocking, output enabling, and data latching - as confirmed in the functional block diagram, pin functions table, and "Device Functional Modes" section of the SN74LVCH16374ADGVR datasheet.