NXP Semiconductors 74LVT162240ADGG:51

Overview

74LVT162240ADGG from Nexperia is a 3.3 V LVT 16-bit inverting buffer/driver with integrated 30 Ω series termination resistors and four independent 3-State output enables (1OE–4OE), designed for high-speed bus driving in memory address, clock distribution, and data bus applications. It delivers ±12 mA output drive, supports 5 V-tolerant inputs/outputs, and features bus-hold on all A-inputs to eliminate external pull-ups.

For engineers reviewing the 74LVT162240ADGG datasheet, 74LVT162240ADGG pinout, 74LVT162240ADGG application, or 74LVT162240ADGG equivalent, key selection criteria include its 2.6 ns typical propagation delay at 3.3 V, 30 Ω on-die termination, TTL-compatible logic levels, and -40 °C to +85 °C industrial temperature range - critical for reliable signal integrity in dense PCB layouts.

Technical Context

The 74LVT162240ADGG implements a BiCMOS architecture optimized for 3.3 V VCC operation while maintaining full 5 V input/output interface compatibility. Its 16-bit inverting function is partitioned into four 4-bit groups, each controlled by a dedicated OE pin (1OE–4OE), enabling granular bus segment control and power-aware enable sequencing.

Each output integrates matched 27 Ω pull-up and pull-down series resistance (per schematic SW00007), reducing ringing and overshoot without requiring external termination. Bus-hold circuitry on all 16 A-inputs actively maintains last-valid state when floating, eliminating need for discrete biasing components in unterminated or partially loaded systems.

Key Specifications

Pinout & Package

74LVT162240ADGG is housed in a 48-pin plastic Thin Shrink Small Outline Package (TSSOP) with 6.1 mm body width (SOT362-1), optimized for high-density PCB assembly and thermal performance in industrial environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVT162240ADGG, 74LVT16240ADGG offers identical performance and drop-in compatibility, while SN74LVC16244ADGGR trades termination and bus-hold for wider VCC range and higher drive - necessitating additional passive components and logic inversion elsewhere in the design.

Availability

74LVT162240ADGG is available at Aetrix Electronics and suitable for industrial automation controllers, test and measurement instruments, and embedded computing platforms requiring stable component supply, long-term lifecycle assurance, and guaranteed traceable sourcing.

Supply support for 74LVT162240ADGG 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 leader in high-performance discrete, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products division.

The 74LVT162240ADGG belongs to Nexperia's LVT logic family, engineered for high-speed 3.3 V bus interfacing in automotive, industrial, and computing systems where signal integrity and mixed-voltage compatibility are critical.

FAQ

What is the function of the 74LVT162240ADGG?

The 74LVT162240ADGG is a 16-bit inverting buffer/driver with four independent 3-State output enables and integrated 30 Ω series termination resistors. It operates from a 3.3 V supply, accepts 5 V-tolerant inputs, and drives 5 V buses without loading current - making it ideal for memory address, clock, and data bus applications where signal integrity and mixed-voltage interfacing are essential. The 74LVT162240ADGG also features bus-hold on all inputs to prevent floating states.

Does the 74LVT162240ADGG require external termination resistors?

No, the 74LVT162240ADGG does not require external termination resistors. Each output includes a built-in 30 Ω series resistor in both pull-up and pull-down paths, as confirmed in the schematic (SW00007) and described in the Features and Description sections. This design eliminates the need for external 33 Ω resistors typically used for transmission line matching, reducing BOM cost and PCB real estate. The 74LVT162240ADGG achieves clean edge control and reduced ringing directly from the die.

Is the 74LVT162240ADGG pin-compatible with other LVT16xx devices?

The 74LVT162240ADGG is pin-compatible with the 74LVT16240A-1, as explicitly stated in the datasheet: "The 74LVT162240A is the same as the 74LVT16240A-1. The part number has been changed to reflect industry standards." It shares the same 48-pin TSSOP package (SOT362-1), identical pin configuration, and functionally matched pin roles. However, it is not pin-compatible with non-inverting variants like 74LVT16244 or different channel counts such as 74LVT162245.

What is the purpose of bus-hold on the 74LVT162240ADGG inputs?

Bus-hold circuitry on all 16 A-inputs of the 74LVT162240ADGG actively maintains the last-valid logic state when an input is left unconnected or driven weakly, eliminating the need for external pull-up or pull-down resistors. As specified, bus-hold current ranges from ±75 µA to ±135 µA depending on input voltage, ensuring stable logic levels under floating conditions. This feature simplifies design in partial-bus or modular systems where some inputs may be unused - a key advantage of the 74LVT162240ADGG over standard LVT buffers.

Can the 74LVT162240ADGG be used in hot-swap applications?

Yes, the 74LVT162240ADGG supports live insertion and extraction, as confirmed in the Features list. Its design includes power-up 3-State behavior - outputs remain in high-impedance until VCC stabilizes - and robust ESD/latch-up protection (≥2000 V HBM, ≥500 mA latch-up immunity). These characteristics make the 74LVT162240ADGG suitable for hot-pluggable modules in industrial backplanes and telecom line cards where safe insertion under power is required.