Nexperia USA Inc. 74ALVT16373DGG,518

Overview

74ALVT16373DGG,518 from Nexperia is a 16-bit transparent D-type latch with 3-state outputs in TSSOP48 package, operating from 2.3 V to 3.6 V supply, featuring dual independent 8-bit latch sections (1LE/2LE and 1OE/2OE), bus-hold inputs eliminating external pull-ups, and ±64 mA/–32 mA output drive capability. It serves as a high-speed data latching interface between mixed-voltage subsystems in industrial control backplanes.

For engineers reviewing the 74ALVT16373DGG,518 datasheet, 74ALVT16373DGG,518 pinout, 74ALVT16373DGG,518 application, or 74ALVT16373DGG,518 equivalent, key selection considerations include latch enable timing (tWH ≥ 1.5 ns), 3-state propagation delays (tPZH ≤ 4.0 ns at 3.3 V), bus-hold current specs (IBHL ≥ 75 μA), and dual-section independent control for segmented bus isolation.

Technical Context

This device implements two independent 8-bit transparent latch banks, each with dedicated active-HIGH latch enable (1LE/2LE) and active-LOW output enable (1OE/2OE). Latch transparency occurs when nLE = HIGH; data is captured on HIGH-to-LOW transition of nLE with setup/hold times as low as tsu(L) = 0.8 ns and th(L) = 1.0 ns at 3.3 V.

Its BiCMOS architecture enables 5 V I/O tolerance with 2.3–3.6 V core supply, IOFF circuitry for partial power-down, and bus-hold inputs that maintain valid logic states without external resistors-critical for floating data bus segments during hot-swap or partial system reset.

Key Specifications

Pinout & Package

TSSOP48 package (SOT362-1), 48-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm pitch - optimized for high-density PCB layouts with thermal and mechanical reliability in reflow-soldered industrial assemblies.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ALVTH16373ZRGR and 74LVC16373ADGG,118, the 74ALVT16373DGG,518 uniquely combines 5 V I/O tolerance, bus-hold inputs, and ±64 mA drive in TSSOP48-making it the sole option for industrial backplanes requiring zero-external-component floating-input resilience and legacy bus interoperability.

Availability

74ALVT16373DGG,518 is available at Aetrix Electronics and suitable for industrial backplane interfaces, modular PLC I/O expansion, automated test fixture control, and signal conditioning systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74ALVT16373DGG,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 delivering high-performance, reliable, and energy-efficient components for automotive, industrial, mobile, and consumer markets-with leadership in logic, discrete, and MOSFET technologies.

The 74ALVT series targets high-speed, mixed-voltage digital interfacing applications, emphasizing robustness, low-power operation, and seamless integration across legacy and modern logic families-especially where 5 V tolerance and bus stability are critical.

FAQ

What is the minimum pulse width required on 1LE/2LE for reliable latching?

The minimum HIGH pulse width on 1LE or 2LE is 1.5 ns at both 2.5 V and 3.3 V supply conditions, as specified in Table 7. This ensures sufficient time for internal sampling and avoids metastability during the HIGH-to-LOW transition used to capture data. Shorter pulses may result in incomplete or inconsistent latching behavior.

Can 74ALVT16373DGG,518 safely drive a 5 V bus while powered from 3.3 V?

Yes-the device features overvoltage-tolerant inputs and outputs rated to 5.5 V. When outputs are enabled, they can source/sink current into a 5 V bus; when disabled (nOE = HIGH), they enter high-impedance state without drawing bus current, satisfying the "no bus current loading" specification in Section 2.

How does the bus-hold function behave during power-up?

Bus-hold remains active during power-up as soon as VCC reaches ~1.2 V, per IO(pu/pd) specifications. It maintains valid logic levels on un-driven inputs even before full VCC stabilization, preventing undefined states that could trigger spurious outputs or downstream logic errors in systems with asynchronous power sequencing.

Is there any timing dependency between latch enable and output enable transitions?

No-operation of nOE does not affect the internal latch state, and nLE transitions do not influence output impedance. The two control domains are fully independent: latching occurs solely on nLE edges, while 3-state control responds only to nOE level. This allows simultaneous latching and output gating without timing constraints between the signals.