Texas Instruments 74LVCH16374ADGGRG4

Overview

74LVCH16374ADGGRG4 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 (1Q1–1Q8 and 2Q1–2Q8), 5.5-V-tolerant inputs, 24-mA output drive at 3.3 V, and I_off support for live insertion-used in server memory buffers and industrial I/O port expansion.

For engineers reviewing the 74LVCH16374ADGGRG4 datasheet, 74LVCH16374ADGGRG4 pinout, 74LVCH16374ADGGRG4 application, or 74LVCH16374ADGGRG4 equivalent, this page delivers verified electrical specs, TSSOP-48 package mapping, bus-hold input behavior, timing parameters up to 150 MHz, and real-world implementation guidance for mixed-voltage bus interfacing.

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. All 16 D inputs accept voltages up to 5.5 V regardless of V_CC, enabling level translation from 5-V logic into 3.3-V or 1.8-V systems without external components.

Each output supports 3-state control with fast enable/disable times (t_en = 4.6 ns, t_dis = 5.5 ns at 3.3 V), bus-hold circuitry on all data inputs (eliminating external pull resistors), and I_off protection that disables outputs and blocks current backflow when V_CC = 0 V-critical for hot-swap and partial-power-down operation.

Key Specifications

Pinout & Package

TSSOP-48 package (DGG), body size 12.50 mm × 6.10 mm, 0.5-mm pitch, lead finish NiPdAu, MSL Level-1, RoHS compliant.

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 74ALVCH16374DGGR, the 74LVCH16374ADGGRG4 uniquely combines 5.5-V input tolerance, I_off, and bus-hold-making it the only option for robust mixed-voltage hot-swap I/O expansion without added discrete protection circuitry.

Availability

74LVCH16374ADGGRG4 is available at Aetrix Electronics and suitable for server memory buffering, industrial I/O expansion, and wearable health sensor hub applications requiring stable component supply across extended temperature ranges (–40°C to +125°C).

Supply support for 74LVCH16374ADGGRG4 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 connectivity technologies, with over 90 years of innovation in industrial, automotive, and communications markets.

The SN74LVCH16374A belongs to TI's Widebus™ family of high-speed, low-voltage logic devices engineered specifically for robust bus interface, memory buffering, and mixed-signal system-level interconnect in demanding embedded environments.

FAQ

What is the maximum operating frequency of the 74LVCH16374ADGGRG4?

The 74LVCH16374ADGGRG4 supports a maximum clock frequency of 150 MHz across its full operating voltage range (1.65 V to 3.6 V), as confirmed in the Switching Characteristics table of the official datasheet. This performance holds under recommended conditions including 30-pF load capacitance and specified input rise/fall rates. The 74LVCH16374ADGGRG4 achieves this while maintaining 4.5-ns typical propagation delay at 3.3 V, making it suitable for high-speed DDR memory interfaces and real-time control loops.

Does the 74LVCH16374ADGGRG4 support 5-V input signals?

Yes, the 74LVCH16374ADGGRG4 accepts input voltages up to 5.5 V on all D and OE pins regardless of V_CC level (1.65–3.6 V), enabling direct interfacing with 5-V microcontrollers, sensors, or legacy peripherals. This is explicitly documented in the Recommended Operating Conditions table (VI = 0–5.5 V) and Feature Description section. The 74LVCH16374ADGGRG4 uses internal clamping to safely translate down to its V_CC-referenced logic thresholds without external components.

How does the I_off feature work in the 74LVCH16374ADGGRG4?

The I_off circuitry in the 74LVCH16374ADGGRG4 automatically disables all outputs and blocks current flow when V_CC = 0 V, preventing damaging back-current from live backplane traces into a powered-down device. This is validated per JESD78 and supports live insertion in modular systems. The 74LVCH16374ADGGRG4 maintains this protection across –40°C to +125°C, with I_off leakage limited to ±10 μA-critical for telecom and industrial chassis with hot-swap capability.

What package type is used for the 74LVCH16374ADGGRG4?

The 74LVCH16374ADGGRG4 uses a TSSOP-48 (DGG) package: 12.50 mm × 6.10 mm body, 0.5-mm lead pitch, NiPdAu lead finish, and Moisture Sensitivity Level 1 (unlimited floor life at ≤30°C/60% RH). This package is confirmed in TI's Orderable Addendum and Mechanical Data section. The 74LVCH16374ADGGRG4 variant ships in large tape-and-reel (2000-unit) format, optimized for automated SMT assembly in high-volume production.

Can the 74LVCH16374ADGGRG4 be used as two independent 8-bit flip-flops?

Yes, the 74LVCH16374ADGGRG4 is architecturally divided into two independent 8-bit sections: Bank 1 (1D1–1D8, 1Q1–1Q8, 1CLK, 1OE) and Bank 2 (2D1–2D8, 2Q1–2Q8, 2CLK, 2OE). Each bank operates with separate clock and output-enable controls, allowing asynchronous latching-for example, capturing sensor data on Bank 1 while transmitting control commands via Bank 2. This dual-domain capability is defined in the Functional Block Diagram and Pin Functions tables of the 74LVCH16374ADGGRG4 datasheet.