NXP Semiconductors 74LVT16373ADGG,518

Overview

74LVT16373ADGG,518 from Nexperia is a 16-bit 3.3 V transparent D-type latch with dual 8-bit latch enable (1LE/2LE) and dual 3-state output enable (1OE/2OE) control, bus-hold inputs, ±64 mA/–32 mA drive strength, and TSSOP48 packaging. It operates across 2.7 V–3.6 V supply and supports mixed-voltage interfacing up to 5.5 V on inputs-used in high-speed data buffering for industrial PLC backplanes and memory-mapped I/O expansion.

For engineers reviewing the 74LVT16373ADGG,518 datasheet, 74LVT16373ADGG,518 pinout, 74LVT16373ADGG,518 application, or 74LVT16373ADGG,518 equivalent, this page delivers verified functional architecture, real-world timing behavior, bus-hold design implications, and precise package-level layout guidance for PCB routing and thermal management.

Technical Context

The device implements two independent 8-bit transparent latches sharing one VCC/GND network, each with dedicated LE and OE controls-enabling selective latching and tri-state control per byte without cross-talk. Its BiCMOS process delivers sub-4 ns propagation delay (tPLH/tPHL) at 3.3 V and supports live insertion via IOFF circuitry that disables outputs during power-down.

Bus-hold inputs eliminate external pull-ups by maintaining last-valid logic state with ±135 μA hold current, while overvoltage-tolerant inputs (up to 5.5 V) allow direct connection to 5 V buses without level shifters. The latch's power-up 3-state and reset behavior ensures defined outputs during system boot.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm pitch - optimized for high-density PCB layouts with moderate thermal dissipation (θJA ≈ 120 °C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit transparent latch applications.

Compared with SN74LVC16373APAG and 74ALVCH16373T, the 74LVT16373ADGG,518 uniquely balances robust industrial drive strength, bus-hold reliability, and 5.5 V input tolerance-making it optimal for unattended, high-noise factory-floor interfaces where signal integrity and component count reduction are primary constraints.

Availability

74LVT16373ADGG,518 is available at Aetrix Electronics and suitable for industrial PLC backplane buffering, memory-mapped I/O expansion, and legacy 5 V system interface requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for 74LVT16373ADGG,518 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 technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVT16373A belongs to Nexperia's LVT logic family-designed specifically for high-speed, low-voltage 3.3 V systems requiring robust noise immunity, bus-hold stability, and mixed-voltage interoperability in harsh industrial settings.

FAQ

What is the maximum clock rate supported by the 74LVT16373ADGG,518 in transparent mode?

The device has no internal clock; its effective data rate depends on propagation delay and setup/hold timing. With tPLH/tPHL ≤ 3.9 ns (max at 2.7 V) and tsu/th ≥ 1.5 ns, it reliably supports sustained 16-bit parallel data transfer at ≥200 MHz in transparent mode when driven by clean edges and properly terminated traces.

Can the 74LVT16373ADGG,518 be used with a 2.5 V supply?

No. The recommended operating VCC range is strictly 2.7 V to 3.6 V per datasheet Table 5. At 2.5 V, VIH/VIL thresholds and output drive fall outside specification-VOH drops below 2.0 V and IOL degrades below 64 mA, risking logic misreads and bus contention in real systems.

How does the bus-hold feature interact with externally pulled inputs?

Bus-hold asserts only when the input is floating or near mid-rail. If an external resistor pulls the line strongly (e.g., 1 kΩ to VCC/GND), the bus-hold circuit is overridden. Weak pulls (≥10 kΩ) may conflict, causing increased current draw or metastability-external termination should be avoided on bus-hold-enabled pins.

Is the 74LVT16373ADGG,518 pin-compatible with older 74LVT16373 variants?

Yes-identical TSSOP48 (SOT362-1) pinout and function mapping are maintained across all 74LVT16373A revisions. The Rev. 6 datasheet confirms backward compatibility with prior versions (v.5 through v.1), including identical pin descriptions, timing parameters, and DC characteristics.