onsemi 74LVT162244MTD

Overview

74LVT162244MTD from ON Semiconductor is a low-voltage 16-bit non-inverting buffer/line driver with 3-STATE outputs, designed for memory and address bus driving in 3.3V systems interfacing to 5V TTL environments. It features nibble-level 3-STATE control (OE1–OE4), integrated 25Ω series output resistance for noise suppression, and BiCMOS fabrication enabling high-speed operation with low power dissipation. Typical applications include clock distribution and bidirectional data bus interface.

For engineers reviewing the 74LVT162244MTD datasheet, pinout, applications, or equivalent options, key selection criteria include its 3.3V supply compatibility, 25Ω built-in output termination, 4.8ns max propagation delay at 3.3V, 12mA drive strength per output, and TSSOP-48 package footprint - all critical for legacy bus interface and signal integrity validation.

Technical Context

The 74LVT162244MTD implements four independent 4-bit groups, each controlled by dedicated active-low OE pins (OE1–OE4), enabling flexible 4-/8-/16-bit bus segmentation. Its BiCMOS architecture delivers ABT-class speed (tPLH/tPHL ≤ 4.8ns) while maintaining LVT-series low ICCZ (0.19mA) in 3-STATE mode.

All 16 outputs integrate matched 25Ω series resistance in both HIGH and LOW states - eliminating external termination resistors and reducing overshoot/undershoot on transmission lines. Input voltage tolerance up to 5.5V allows safe interfacing with 5V logic without level shifters.

Key Specifications

Pinout & Package

74LVT162244MTD is housed in a 48-lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, 6.1mm wide, with 0.5mm lead pitch. The package supports fine-pitch PCB assembly and provides thermal and mechanical reliability for surface-mount industrial designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVTH162244MTD, the 74LVT162244MTD omits bushold but retains identical timing, termination, and 5V-tolerant inputs - making it optimal for cost-sensitive, fixed-input designs. SN74LVC16244ADGGR offers higher drive but sacrifices interoperability and requires PCB revision.

Availability

74LVT162244MTD is available at Aetrix Electronics and suitable for memory subsystems, industrial bus interfaces, clock distribution networks, and legacy 5V peripheral interfacing requiring stable component supply and long-term obsolescence management.

Supply support for 74LVT162244MTD 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

ON Semiconductor (formerly Fairchild Semiconductor) is a global leader in intelligent power and sensing solutions, serving automotive, industrial, cloud computing, and consumer markets with energy-efficient semiconductor technologies.

The 74LVT162244MTD belongs to ON Semiconductor's legacy LVT logic family, engineered for high-speed, low-voltage bus interfacing with backward compatibility to 5V TTL systems - targeting industrial control, telecom infrastructure, and embedded computing upgrades.

FAQ

Is 74LVT162244MTD still in production or recommended for new designs?

No - the 74LVT162244MTD is officially discontinued and not recommended for new designs per ON Semiconductor documentation. However, Aetrix Electronics maintains active inventory and provides lifecycle support including last-time buy planning, cross-reference guidance, and obsolescence mitigation strategies for existing production programs relying on this part.

What is the function of the OE1–OE4 pins on 74LVT162244MTD?

The OE1–OE4 pins are active-low output enable controls, each managing a 4-bit nibble (OE1→O0–O3, OE2→O4–O7, etc.). When asserted LOW, the corresponding outputs drive; when HIGH, they enter high-impedance state. They can be tied together for unified 16-bit control or used independently for segmented bus isolation - a key feature distinguishing 74LVT162244MTD from standard octal buffers.

Does 74LVT162244MTD have bushold inputs like the LVTH variant?

No - the 74LVT162244MTD does not include bushold circuitry on its inputs. Unlike the 74LVTH162244MTD, which holds unused inputs at their last valid logic state using internal feedback, the 74LVT162244MTD requires external pull-up or pull-down resistors on unconnected inputs to prevent floating conditions and potential noise-induced switching.

Can 74LVT162244MTD safely interface with 5V logic circuits?

Yes - the 74LVT162244MTD accepts input voltages up to 5.5V while operating from a 3.3V supply, enabling direct connection to 5V TTL outputs without level shifters. Its outputs swing rail-to-rail (VOL ≈ 0.2V, VOH ≈ VCC−0.2V) and are 5V-tolerant in 3-STATE mode, making it ideal for mixed-voltage bus bridging applications.

What package type and dimensions does 74LVT162244MTD use?

The 74LVT162244MTD uses a 48-lead Thin Shrink Small Outline Package (TSSOP), designated MTD48, compliant with JEDEC MO-153. It measures 6.1mm wide with 0.5mm lead pitch, offering compact surface-mount compatibility and thermal performance suitable for industrial PCB layouts with constrained real estate.