NXP Semiconductors 74ALVCH16374DGG112

Overview

74ALVCH16374DGG112 from Nexperia is a 16-bit edge-triggered D-type flip-flop with dual independent clock (1CP/2CP) and output enable (1OE/2OE) control, bus hold inputs, 3-state outputs, and IOFF partial power-down protection. It operates across 1.2 V to 3.6 V supply, delivers ±24 mA drive at 3.0 V, and supports high-speed data latching in memory interface and bus buffering applications.

For engineers reviewing the 74ALVCH16374DGG112 datasheet, 74ALVCH16374DGG112 pinout, 74ALVCH16374DGG112 application, or 74ALVCH16374DGG112 equivalent, this page provides verified functional partitioning (two 8-bit sections), TSSOP48 package mapping, bus hold behavior, IOFF-enabled power sequencing, and real-world timing parameters including 3.4 ns max propagation delay at 3.3 V.

Technical Context

This device implements two independent 8-bit D-flip-flop banks sharing no internal logic-each bank has dedicated clock (1CP/2CP), output enable (1OE/2OE), eight data inputs (1D0–1D7 / 2D0–2D7), and eight 3-state outputs (1Q0–1Q7 / 2Q0–2Q7). Clocks trigger on LOW-to-HIGH transitions; outputs enter high-impedance state when respective OE is HIGH.

Bus hold circuitry maintains valid logic levels on all data inputs during floating conditions, eliminating external pull resistors. The IOFF feature disables outputs during partial power-down, blocking backflow current when VCC is inactive while other rails remain powered-critical for hot-swap and multi-rail system designs.

Key Specifications

Pinout & Package

TSSOP48 package (SOT362-1), 6.1 mm body width, 48-pin plastic thin shrink small outline with low-inductance multiple VCC/GND pins to minimize noise and ground bounce.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ALVTH16374GR and 74LVC16374ADGG, the 74ALVCH16374DGG112 uniquely combines ultra-wide 1.2 V–3.6 V operation, IOFF-enabled safe power sequencing, and bus hold-making it optimal for flexible voltage-domain bridging and robust industrial hot-swap interfaces.

Availability

74ALVCH16374DGG112 is available at Aetrix Electronics and suitable for memory interface buffering, parallel bus isolation, hot-swappable module interfacing, and industrial control backplane applications requiring stable component supply across extended temperature and multi-voltage environments.

Supply support for 74ALVCH16374DGG112 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

Nexperia is a global semiconductor expert focused on essential efficiency-delivering high-performance, reliable standard products for automotive, industrial, mobile, and computing markets.

The 74ALVCH16374DGG112 belongs to Nexperia's advanced ALVCH logic family, engineered for low-power, high-speed, multi-voltage interoperability in demanding industrial and communications infrastructure applications.

FAQ

What is the minimum supply voltage supported by the 74ALVCH16374DGG112?

The 74ALVCH16374DGG112 operates down to 1.2 V, enabling direct integration with low-voltage microcontrollers and FPGAs. At 1.2 V, it maintains functional timing (fmax = 125 MHz) and bus hold capability, though output drive strength is reduced versus 3.3 V operation. This wide range eliminates need for voltage translation in mixed-supply systems.

Does the 74ALVCH16374DGG112 support true dual-clock operation with independent timing domains?

Yes-the 74ALVCH16374DGG112 features two physically separate clock inputs (1CP and 2CP) and two output enables (1OE and 2OE), allowing completely independent timing control of its two 8-bit banks. Each bank samples its respective D-inputs only on its own clock's LOW-to-HIGH transition, with no internal coupling or skew between banks.

How does the bus hold function behave on the 74ALVCH16374DGG112 during power-up or brownout?

The bus hold circuit in the 74ALVCH16374DGG112 remains active across the full 1.2 V–3.6 V supply range and retains the last valid logic state on each data input even during slow power ramp-up or brownout conditions. It draws only 75 μA per input at 3.0 V, ensuring stable input levels without external biasing until system clocks stabilize.

Can the 74ALVCH16374DGG112 be used in hot-swap applications where VCC may be disconnected while I/O lines remain powered?

Yes-the 74ALVCH16374DGG112 incorporates IOFF circuitry that automatically disables all outputs when VCC drops below threshold, preventing destructive backflow current from live I/O lines into the unpowered device. This meets JESD78 Class II.A latch-up immunity (>100 mA) and enables safe hot-plug operation in modular systems.

What is the maximum clock frequency achievable with the 74ALVCH16374DGG112 at 3.3 V supply?

At VCC = 3.3 V and CL = 50 pF, the 74ALVCH16374DGG112 supports up to 350 MHz maximum clock frequency (fmax), with typical propagation delay of 2.4 ns and setup time of 1.2 ns. These values are measured under recommended operating conditions and validated across -40 °C to +85 °C ambient temperature.