Texas Instruments SN74LVC16374DGGR

Overview

SN74LVC16374 from Texas Instruments is a 16-bit edge-triggered D-type flip-flop with 3-state outputs, designed for 2.7-V to 3.6-V V_CC operation. It functions as two independent 8-bit registers or one unified 16-bit register, features bus-hold on all data inputs, and supports high-speed clocking up to 100 MHz at 3.3 V - ideal for bidirectional bus driving and I/O port buffering in industrial control backplanes.

For engineers reviewing the SN74LVC16374 datasheet, SN74LVC16374 pinout, SN74LVC16374 application, or SN74LVC16374 equivalent, key selection criteria include its dual 8-bit 3-state output architecture, ±24-mA drive strength at 3 V, bus-hold input retention, low propagation delay (1.5–7.5 ns), and TSSOP-48 package compatibility with high-density PCB layouts.

Technical Context

This device implements two synchronous 8-bit D-flip-flop sections sharing independent clock and output-enable controls per section. Each section latches data on the positive edge of its dedicated CLK input while OE asserts low to enable outputs or high to place them in high-impedance state - enabling dynamic bus arbitration without affecting internal storage.

Its EPIC™ submicron CMOS process delivers robust latch-up immunity (>250 mA per JESD-17), low ground bounce (<0.8 V typical VOLP), and undershoot suppression (>2 V typical VOHV). Bus-hold circuitry actively maintains valid logic levels on floating D inputs, eliminating external pullup/pulldown resistors.

Key Specifications

Pinout & Package

TSSOP-48 (DGG) package: 12.6 mm × 6.2 mm × 1.2 mm body, 0.5-mm lead pitch, 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 16-bit 3-state D-flip-flop applications.

Compared with SN74ALVC16374DGGR and 74LVCH16374ADGG, the SN74LVC16374DGGR delivers superior noise immunity and tighter timing control within its specified 2.7–3.6-V window, making it the preferred choice for deterministic 3.3-V industrial bus interfaces where voltage headroom and propagation consistency are critical.

Availability

SN74LVC16374DGGR is available at Aetrix Electronics and suitable for industrial PLC backplanes, memory-mapped I/O expansion, FPGA configuration latching, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN74LVC16374DGGR 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 experience in high-reliability industrial and automotive IC design.

The SN74LVC16374 belongs to TI's Widebus™ family of high-speed, low-voltage logic devices engineered specifically for robust parallel bus interfacing in industrial automation, test instrumentation, and programmable logic systems.

FAQ

What is the maximum clock frequency supported by the SN74LVC16374DGGR?

The SN74LVC16374DGGR supports a maximum clock frequency of 100 MHz when operated at V_CC = 3.3 V ± 0.3 V and T_A = 25°C. At the minimum V_CC of 2.7 V, the guaranteed maximum frequency drops to 80 MHz. These values are specified under standard load conditions (C_L = 50 pF) and reflect worst-case timing across all 16 flip-flops in the SN74LVC16374DGGR device.

Does the SN74LVC16374DGGR require external pullup resistors on its data inputs?

No, the SN74LVC16374DGGR does not require external pullup or pulldown resistors on its data inputs because it integrates active bus-hold circuitry on all 16 D inputs. This feature maintains valid logic states on floating or unterminated inputs, reducing BOM cost and PCB area. The bus-hold current is ±75 µA at V_I = 2 V, ensuring stable operation without external biasing for the SN74LVC16374DGGR.

What is the purpose of the two independent OE pins on the SN74LVC16374DGGR?

Each OE pin (1OE and 2OE) independently controls the 3-state output drivers for its respective 8-bit section (1Q1–1Q8 and 2Q1–2Q8). When asserted low, the corresponding outputs drive high or low logic levels; when high, they enter high-impedance state. This allows time-multiplexed or spatially separated bus access - for example, enabling one section for data reads while disabling the other for writes - a capability built into the SN74LVC16374DGGR's dual-section architecture.

Can the SN74LVC16374DGGR operate reliably at –40°C?

Yes, the SN74LVC16374DGGR is fully characterized and guaranteed to operate across the industrial temperature range of –40°C to +85°C. All electrical specifications - including propagation delay, setup/hold times, output drive, and bus-hold performance - are validated over this full range. This makes the SN74LVC16374DGGR suitable for deployment in harsh environments such as factory-floor controllers, outdoor metering systems, and transportation electronics.

What package type and lead finish does the SN74LVC16374DGGR use?

The SN74LVC16374DGGR uses a 48-pin Thin Shrink Small-Outline Package (TSSOP-DGG) with 0.5-mm lead pitch, 12.6 mm × 6.2 mm body size, and 1.2 mm maximum height. Its lead finish is NiPdAu (NIPDAU), compliant with RoHS, and rated for MSL Level-1 (unlimited floor life at ≤30°C/60% RH). This package is optimized for automated surface-mount assembly and high-density routing - a defining mechanical specification of the SN74LVC16374DGGR.