Nexperia USA Inc. 74ALVT162823DGGS

Overview

74ALVT162823DGGS from Nexperia is an 18-bit positive-edge-triggered D-type flip-flop with integrated 30 Ω series output termination, dual 9-bit independent control (nCP/nCE/nMR/nOE), bus-hold inputs, and 3-state outputs. It operates across −40 °C to +85 °C at 2.5 V or 3.3 V supply, delivering sub-5 ns propagation delay and ±12 mA drive strength. It serves as a high-speed bus interface register in memory subsystems and backplane data latching.

For engineers reviewing the 74ALVT162823DGGS datasheet, 74ALVT162823DGGS pinout, 74ALVT162823DGGS application, or 74ALVT162823DGGS equivalent, key selection criteria include its integrated 30 Ω output termination (eliminating external resistors), dual 9-bit independent clock/reset/enable control, bus-hold input functionality, TSSOP56 package compatibility, and guaranteed operation at 3.3 V with 12 mA sink/source capability.

Technical Context

The device implements two independent 9-bit D-type flip-flop banks, each with dedicated clock (nCP), clock enable (nCE), master reset (nMR), and output enable (nOE) inputs. Its bus-hold circuitry maintains valid logic states on unused data inputs without external pull-ups.

Each output includes a monolithic 30 Ω series resistor, enabling direct connection to 50 Ω transmission lines without discrete termination. The power-up 3-state and power-up reset features ensure deterministic I/O behavior during system initialization.

Key Specifications

Pinout & Package

Package: TSSOP56 (SOT364-1), plastic thin shrink small outline, 56-pin, 6.1 mm body width, 0.5 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 18-bit bus-interface flip-flop applications.

Compared with SN74ALVTH162823DGGR and 74LVC16374APAG, the 74ALVT162823DGGS uniquely combines exact 18-bit width, integrated 30 Ω termination, bus-hold inputs, and industrial temperature range - reducing component count and improving signal integrity in space-constrained, high-reliability bus interfaces.

Availability

74ALVT162823DGGS is available at Aetrix Electronics and suitable for memory interface buffers, backplane data latching, industrial PLC I/O expansion, and test equipment pattern generation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74ALVT162823DGGS 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 high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer applications.

The 74ALVT162823DGGS belongs to Nexperia's advanced ALVT logic family, engineered specifically for high-speed, low-noise bus interfacing in 2.5 V/3.3 V systems where signal integrity, termination integration, and industrial-grade robustness are critical.

FAQ

What is the purpose of the integrated 30 Ω series resistors on each output?

Each output includes a monolithic 30 Ω series resistor to match standard 50 Ω PCB trace impedance when combined with typical load capacitance and termination. This eliminates the need for external series resistors, reduces board space, lowers BOM cost, and improves signal integrity by minimizing reflections on high-speed parallel buses - confirmed in the functional diagram (Fig. 3) and specified in Section 2.

Can the two 9-bit sections operate with different clock sources?

Yes - 1CP and 2CP are electrically isolated inputs, allowing fully asynchronous operation of the two 9-bit banks. Each section responds only to its own clock, CE, MR, and OE signals. This is explicitly defined in the General Description ("can be used as two 9-bit flip-flops") and verified in the functional diagram (Fig. 1) and pin description table (Section 5.2).

Does the device support 5 V tolerant inputs?

No - the absolute maximum input voltage is +7.0 V, but recommended operating conditions limit VI to 0–5.5 V only when VCC = 2.5 V or 3.3 V. However, it is not 5 V-tolerant in the sense of safe 5 V logic input operation with lower VCC: Table 5 specifies VI max = 5.5 V regardless of VCC, and the "5 V I/O compatible" benefit in Section 2 refers to interoperability with 5 V systems via level-shifting or open-drain use, not direct 5 V input tolerance at 2.5/3.3 V supply.

How does the bus-hold feature affect unused input pins?

Bus-hold circuitry actively maintains the last-valid logic state on any D-input left unconnected or floating, eliminating the need for external pull-up/pull-down resistors. Per Section 2 and Table 6, IBHL and IBHH currents (±70–130 μA) provide sufficient holding strength at 2.5 V and 3.3 V supplies - verified in the bus-hold schematic (Fig. 2) and static characteristics tables.