Texas Instruments SN74AVC16374GQLR

Overview

SN74AVC16374GQLR 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 and featuring Dynamic Output Control (DOC) circuitry, ±24 mA dynamic drive at 2.5 V, and Ioff partial-power-down support. It serves as a bidirectional bus driver or buffer register in mixed-voltage data interfaces.

For engineers reviewing the SN74AVC16374GQLR datasheet, SN74AVC16374GQLR pinout, SN74AVC16374GQLR application, or SN74AVC16374GQLR equivalent, key selection criteria include its 48-pin VFBGA (GQL) package, 200 MHz max clock frequency at 1.8 V, 1.1 ns hold time, overvoltage-tolerant I/Os, and DOC-enabled noise reduction without speed penalty.

Technical Context

This device implements two independent 8-bit D-type flip-flops, each with separate clock (CLK) and output-enable (OE) controls. Data is latched on the positive edge of CLK, while OE places outputs in high-impedance state without affecting internal register operation.

The Dynamic Output Control (DOC) circuit dynamically modulates output impedance during signal transitions-initially lowering it for strong drive (equivalent to ±24 mA standard outputs at 2.5 V), then raising it to suppress switching noise. Ioff protection disables outputs during power-down to prevent backflow current.

Key Specifications

Pinout & Package

The SN74AVC16374GQLR is housed in a 48-ball Very Thin Fine-Pitch Ball Grid Array (VFBGA) package (GQL), measuring 7.0 mm × 4.5 mm × 0.9 mm, with 0.5-mm ball pitch and bottom-side thermal pad for enhanced thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC16374DGGR and SN74AVCH16T245ZRGR, the SN74AVC16374GQLR uniquely combines clocked 16-bit storage, DOC-based noise control, and overvoltage-tolerant I/Os in a space-constrained VFBGA package-making it optimal for high-integrity, mixed-rail buffering where timing predictability and EMI compliance are critical.

Availability

SN74AVC16374GQLR is available at Aetrix Electronics and suitable for memory interface buffers, FPGA I/O expansion, industrial bus transceivers, and automotive infotainment data hubs requiring stable component supply across extended temperature ranges.

Supply support for SN74AVC16374GQLR 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 and timing devices.

The SN74AVC16374GQLR belongs to TI's AVC logic family-engineered for low-voltage, high-speed, mixed-supply digital interfacing in space-constrained, noise-sensitive applications such as portable computing and automotive electronics.

FAQ

What is the maximum clock frequency supported by the SN74AVC16374GQLR?

The SN74AVC16374GQLR supports up to 200 MHz at 1.8 V and 160 MHz at 1.5 V, with timing validated across the full –40°C to 85°C operating range. These values are measured under standard load conditions (CL = 30 pF) and reflect guaranteed performance per the SCES158H datasheet revision March 2005. The SN74AVC16374GQLR achieves this speed while maintaining sub-4 ns propagation delay and robust setup/hold margins.

Does the SN74AVC16374GQLR support partial power-down operation?

Yes, the SN74AVC16374GQLR features Ioff circuitry that actively disables outputs during power-down, limiting off-state current to ±10 µA at 3.6 V. This prevents damaging current backflow when VCC is inactive while other system rails remain powered-a requirement for hot-plug and modular power architectures. The SN74AVC16374GQLR meets JESD78 Class II latch-up immunity standards under these conditions.

How does the Dynamic Output Control (DOC) circuit in the SN74AVC16374GQLR reduce noise?

The DOC circuit in the SN74AVC16374GQLR dynamically adjusts output impedance during signal transitions: it first lowers impedance to deliver strong drive (equivalent to ±24 mA at 2.5 V), then rapidly raises it to limit di/dt and suppress ringing. This two-phase behavior cuts switching noise without increasing propagation delay-verified in Figure 1 of the SN74AVC16374GQLR datasheet through VOL vs IOL and VOH vs IOH curves.

Can the SN74AVC16374GQLR interface directly with 5-V logic devices?

No-the SN74AVC16374GQLR inputs tolerate up to 4.6 V, not 5 V. While its overvoltage-tolerant I/Os accept signals beyond VCC (e.g., 3.3-V outputs driving a 1.8-V SN74AVC16374GQLR input), sustained 5-V input exposure exceeds absolute maximum ratings and risks permanent damage. For true 5-V interfacing, a dedicated level shifter or 5-V tolerant logic family must be used upstream of the SN74AVC16374GQLR.

What is the thermal resistance (θJA) of the SN74AVC16374GQLR in its GQL package?

The SN74AVC16374GQLR in the VFBGA (GQL) package has a junction-to-ambient thermal resistance (θJA) of 42°C/W, as specified in the Absolute Maximum Ratings table of the SCES158H datasheet. This value assumes standard JEDEC test board conditions (2-layer board, 2 oz copper, 1-in² copper area per power pad) and enables reliable operation up to 85°C ambient when dissipating ≤120 mW under typical switching loads.