Nexperia USA Inc. 74LVTH16244BDGG,18

Overview

74LVTH16244BDGG,18 from Nexperia is a 3.3 V, 16-bit non-inverting 3-state buffer/driver with four independent output-enable controls (1OE–4OE), bus-hold inputs, and ±32 mA/±64 mA drive capability. It operates across 2.7–3.6 V, tolerates 5.5 V inputs, and supports hot-plug operation in industrial backplane and memory interface applications.

For engineers reviewing the 74LVTH16244BDGG,18 datasheet, 74LVTH16244BDGG,18 pinout, 74LVTH16244BDGG,18 application, or 74LVTH16244BDGG,18 equivalent, key selection criteria include its 3.3 V BiCMOS logic compatibility, 4.0 ns max propagation delay at 3.3 V, overvoltage-tolerant inputs, bus-hold functionality eliminating external pull-ups, and TSSOP48 thermal and layout constraints.

Technical Context

This device implements four independent 4-bit buffered channels, each with dedicated active-low output enable (nOE) controlling high-impedance state entry/exit. Its BiCMOS architecture delivers TTL-compatible input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) while driving 5 V buses without current loading.

The integrated bus-hold circuitry maintains valid logic states on unused inputs using ±75–135 μA hold current, and IOFF protection ensures negligible leakage (< ±100 μA) during partial power-down. Propagation delays are asymmetric: tPLH/tPHL ≤ 3.2 ns, while 3-state enable/disable times (tPZH/tPLZ/tPHZ/tPLZ) range 2.1–4.5 ns at 3.0–3.6 V.

Key Specifications

Pinout & Package

TSSOP48 (SOT362-1) package: plastic thin shrink small outline, 48 leads, 6.1 mm body width, 0.5 mm lead pitch, 1.2 mm max height - optimized for high-density PCB layouts with thermal relief via GND/VCC pin distribution.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.

Compared with SN74LVC16244ADGGR and 74ALVCH16244PW,118, the 74LVTH16244BDGG,18 uniquely combines 5.5 V input tolerance, bus-hold, and IOFF in a single 3.3 V buffer - making it the only option for robust hot-swap and mixed-voltage backplane use without added components.

Availability

74LVTH16244BDGG,18 is available at Aetrix Electronics and suitable for industrial backplane interfaces, FPGA I/O expansion, memory subsystem isolation, and automated test equipment requiring stable component supply across extended temperature ranges.

Supply support for 74LVTH16244BDGG,18 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 logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets - with manufacturing rooted in process innovation and quality rigor.

The 74LVTH series targets high-speed, low-voltage bus interface applications where robustness, mixed-voltage compatibility, and thermal efficiency are critical - especially in telecom infrastructure and programmable logic systems.

FAQ

Does 74LVTH16244BDGG,18 support hot-swap insertion?

Yes. The device features live insertion/extraction support per JEDEC JESD63, enabled by power-up 3-state behavior and IOFF circuitry that limits leakage to ±100 μA when VCC = 0 V. This prevents bus contention and back-driving during module replacement in powered-backplane systems.

What is the maximum capacitive load this buffer can drive reliably?

Based on dynamic characterization (CL = 50 pF, RL = 500 Ω), the device maintains ≤ 4.0 ns propagation delay and clean edges up to 50 pF. For heavier loads (>100 pF), output rise/fall times degrade due to limited drive strength; external series termination or reduced slew rate may be needed.

Can unused inputs be left floating?

Yes - bus-hold circuitry actively maintains the last-valid logic state on all data inputs (1A0–4A3) with ±75–135 μA hold current. No external pull-up/down resistors are required, reducing BOM cost and PCB area versus standard LVT buffers.

How does the 74LVTH16244BDGG,18 differ from the 74LVT16244BDGG version?

The 'H' suffix denotes enhanced drive strength: 74LVTH16244BDGG specifies ±64 mA sink / ±32 mA source, while 74LVT16244BDGG is rated for ±32 mA sink/source. Both share identical pinout, bus-hold, and 5.5 V input tolerance - the 'H' variant is selected for higher fan-out or longer trace routing.