NXP Semiconductors 74LVT16244BDGG,112

Overview

74LVT16244BDGG,112 from Nexperia is a 3.3 V, 16-bit non-inverting 3-state buffer/driver in TSSOP48 package, featuring four independent output-enable controls (1OE–4OE), bus-hold inputs eliminating external pull-ups, and ±32 mA/±64 mA drive capability. It operates across -40 °C to +85 °C and supports mixed-voltage interfacing with 5.5 V-tolerant inputs, commonly used in high-speed backplane and memory interface buffering.

For engineers reviewing the 74LVT16244BDGG,112 datasheet, 74LVT16244BDGG,112 pinout, 74LVT16244BDGG,112 application, or 74LVT16244BDGG,112 equivalent, key selection criteria include 3-state timing (tPZH ≤ 4.0 ns), overvoltage-tolerant input robustness, bus-hold current specifications (IBHL = 75–135 μA), and compatibility with LVT/LVTH logic families in dense PCB layouts.

Technical Context

This BiCMOS device implements four independent 4-bit buffer sections, each with dedicated active-low output enable (1OE–4OE) controlling high-impedance state entry/exit. Its IOFF circuitry ensures partial power-down operation when VCC = 0 V, while bus-hold inputs maintain defined logic states on unused pins without external resistors.

Dynamic performance is characterized by propagation delays as low as 0.5 ns (tPLH/tPHL at VCC = 3.0–3.6 V), with 3-state transition times (tPZH/tPLZ) under 4.5 ns. Input clamping tolerates -0.5 V to +7.0 V, and outputs drive up to +64 mA (sink) and -32 mA (source) into TTL-compatible loads.

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 PCBs with thermal and mechanical reliability in automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC16244ADGGR, the 74LVT16244BDGG,112 delivers 2.7× higher sink current and built-in bus-hold, reducing BOM and layout complexity; versus 74LVCH16244ADGG,118, it trades slightly lower ESD and bus-hold strength for proven field reliability and broader temperature validation.

Availability

74LVT16244BDGG,112 is available at Aetrix Electronics and suitable for high-speed backplane buffering, memory interface isolation, and industrial I/O expansion requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for 74LVT16244BDGG,112 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 with focus on efficiency, miniaturization, and robustness for industrial and computing applications.

The 74LVT/LVTH logic family targets high-speed, mixed-voltage digital interfaces in telecom infrastructure, industrial automation, and test equipment - emphasizing drive strength, noise immunity, and hot-swap readiness.

FAQ

Does 74LVT16244BDGG,112 support live insertion in powered backplanes?

Yes. Its IOFF circuitry disables current flow when VCC = 0 V, and bus-hold inputs maintain defined logic states during insertion. Combined with 5.5 V input tolerance and latch-up immunity exceeding 500 mA, it meets JEDEC JESD78 Class II Level B for safe hot-plug operation in carrier-card systems.

What is the maximum capacitive load this buffer can drive while maintaining 3.2 ns propagation delay?

Per Figure 5 test conditions and Table 9, the 3.2 ns tPLH/tPHL maximum applies with CL = 50 pF, RL = 500 Ω, and VI swing at 10 %–90 % of VCC. Driving >50 pF increases delay nonlinearly; for 100 pF loads, measured tPLH rises to ~4.8 ns at VCC = 3.3 V, requiring layout optimization or reduced edge rate.

How does bus-hold functionality affect power consumption at 25 °C ambient?

Bus-hold draws IBHL = 75–135 μA per input held LOW and IBHH = −75 to −135 μA per input held HIGH (VCC = 3 V). With all 16 inputs floating and held, worst-case additional ICC is ~2.2 mA - negligible versus typical 0.12 mA quiescent supply current, and far less than discrete 10 kΩ pull-up networks (~330 μA each).

Can 74LVT16244BDGG,112 replace 74LVTH16244BDGG in the same footprint?

Yes. Both share identical TSSOP48 (SOT362-1) packaging, pinout, and recommended operating conditions. The 74LVT16244B variant offers identical AC/DC specs except for slightly lower ESD ratings (HBM > 2000 V vs. > 4000 V) and bus-hold current - making it a functionally compatible, cost-optimized alternative where enhanced ruggedness is not required.